Earth's Busy Neighborhood
ACC's Small Object Report for 26 Feb. to 4 March 2007
A semi-automated report compiled on 4 March 2007 at 2359 UTC
There were 22 small asteroids* reported in the last 168 hours, during which two were newly discovered.
*Also included in this week's reporting is one borderline-small object and a not-small object.
Currently 1,256 NEAs are listed with H>22.0 by JPL and/or the MPC (1,074 are listed as such by both).
[ news | objects by size | object index alpha/cross-ref | 48 Hours | viewing | weekly ]
Editor's note: As asteroids go, "small" is defined as having an
absolute magnitude (brightness) calculated at greater than H=22.0, which
converts very roughly to a diameter under 135 meters.
No matter how close they come to the Earth, the astronomical community
does not classify such objects as "potentially hazardous." However, as
demonstrated by the mile wide (1.6 km.) Barringer Crater in Arizona, blasted
out by a "small" asteroid some 50,000 years ago, there are asteroids too small
to be labeled "potentially hazardous" that actually could cause severe local
damage. These are sometimes called "Tunguska-class objects" (TCOs), after the
1908 event probably caused by a comet fragment or asteroid too small to be
classified today as hazardous but packing enough wallop to flatten a Siberian
forest area the size of a large city.
NEODyS in December 2005 changed its main Risk page to classify "Objects too
small to result in heavy damage on the ground" as having "absolute
magnitude > 25," which corresponds to perhaps 35 meters wide.
And JPL two months earlier started flagging (with a blue background) risk-listed
objects of "Estimated diameter 50 meters or less" as "not likely to
cause significant damage in the event of an impact, although impact damage
does depend heavily upon the specific (and usually unknown) physical
properties of the object in question."
Small asteroids that come close enough to Earth to be seen have significant
potential for scientific study today, and for exploration and
exploitation in the future. They present a sampling of distant asteroid
populations and a few may be remnants of the event that created the
Earth-Moon system.
Some of these objects are discovered while close to Earth moving across the sky
quite quickly, when they are called "FMOs" or "VFMOs" (very fast moving objects).
The discovery and follow-up tracking of asteroids with H>22.0 represents
some of the most difficult and very best observing work being done today by
amateur and professional astronomers around the world, and the page you are
reading is dedicated to recognizing their ongoing successes.
Small Object News (newest items first) [ object listings |
index |
48 Hours |
viewing |
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- March 4: Sunday Daily Orbit Update (DOU) MPEC 2007-E12 reports observations of two small asteroids. Begues Observatory in Spain added about seven days to 2007 DD's observing arc and two days to 2007 DJ's arc, extending both to about fifteen days. Observations of minor objects are difficult during the bright Moon, which was full last night, but Pepe Manteca at Begues Observatory took advantage of the lunar eclipse to bring in these astrometric sets.
- March 3: On Saturday, DOU MPEC 2007-E11 reports observations of four small asteroids. Great Shefford Observatory in England added about three days each to the now nine-day observing arcs of 2007 DG8 and risk-listed 2007 DX40, both of which are about to go out of view for all ground-based optical telescopes. Desert Moon Observatory in New Mexico kept its eye on 2007 CQ5. And 2007 DJ was tracked by Petit Jean Mountain South Observatory in Arkansas.
- March 2: Friday's DOU MPEC 2007-E01 reports observations of one small asteroid. 2007 DJ, which is coming in to pass Earth at 7.4 lunar distances tomorrow, was observed from February 26th through this morning from Peschiera del Garda and Balzaretto observatories in Italy and Great Shefford Observatory in England.
- March 1: No DOU MPEC has been posted on Thursday and there is no news to report other than the outage of Minor Planet Center Web services to NEO observers during the early hours today. See the MPC Status Page for an explanation.
- Feb. 28: On Wednesday, DOU MPEC 2007-D76 reports observations of six small asteroids. Desert Moon Observatory in New Mexico added another six days to 2007 CQ5's now twenty-day observing arc. 2007 DJ was observed from Fiamene and Madonna di Dossobuono observatories in Italy and from Spacewatch with its 0.9-meter telescope in Arizona. 2007 DG8 was reported from Farpoint Observatory in Kansas, and 2007 DQ40 from Farpoint and Fiamene. Observation of 2007 DJ8 coded to Tim Spahr came from Whipple Observatory in Arizona. And 2007 DB61 was tracked by Petit Jean Mountain South Observatory in Arkansas and Balzaretto Observatory in Italy.
- Feb. 27: Tuesday's DOU MPEC 2007-D75 reports observations of fourteen small asteroids -- nine from astrometry coded to Tim Spahr via Whipple Observatory in Arizona, and all but one of those only from that source. Spahr/Whipple added about 21 days to 2007 BC8's twelve-day observing arc, reported risk-rated 2007 CT26 and 2007 DS7, as well as 2007 DX, and provided the first follow-up for 2007 DG8, 2007 DH8, and 2007 DM8, adding about three days each to their one-day arcs, and first follow-up for 2007 DL41. The Mt. Lemmon Survey (MLS) and Spacewatch with its 1.8-meter telescope brought in the first follow-up for intruder 2007 DN41, adding three days to its one-day arc. The 1.8-meter also observed risk-rated 2007 DX40 and provided the first follow-up for 2007 DX60, now classified by JPL as being "small." The only amateur observatory in this morning's news, Remanzacco Observatory in Italy, provided the first follow-up for the newest small-asteroid discovery, 2007 DB61. And 2007 DQ40 was reported from the MLS and 2007 DJ from Spahr/Wipple, the MLS, and the Catalina Sky Survey in Arizona.
The 25 February discovery, and prediscovery on February 21st, of 2007 DX60 with the Spacewatch 0.9-meter telescope was announced yesterday. Confirmation of that discovery came from the MLS and Spacewatch with its 1.8-meter telescope.
Not noticed at A/CC until a week later was that the observation of 2007 DL41 reported today pushed it over the small-classification line. Way over. JPL and MPC calculations of absolute magnitude went from H=23.2 before to now 20.7. That results in the (very roughly) estimated diameter changing from 80 to 245 meters. Unlike with objects that hover around the H=22.0 borderline, we will completely drop this one from small object reporting, unless, of course, it shrinks back again.
- Feb. 26 #2: On Monday the discovery of one small asteroid has been announced. After passing Earth, according to JPL from its first orbit calculation, at about 7.1 lunar distances on February 21st, 2007 DB61 was discovered from New Mexico yesterday morning UT by LINEAR, which alone confirmed it this morning.
- Feb. 26 #1: Monday DOU MPEC 2007-D70 reports observations of eleven small asteroids. Spacewatch used its 1.8-meter telescope in Arizona to add about nineteen days to what had been a 28-day observing arc for 2007 AS2, and to track 2007 CL26 and risk-listed 2007 DC. The first and last of these recently went out of view for most NEO observers and the other fades away tomorrow. The 1.8-meter also observed risk-listed 2007 DS7, doubling its arc to about four days, as well as 2007 DX. And that telescope and Mt. John Observatory in New Zealand provided the first follow-up for risk-listed 2007 DX40, doubling its arc to about four days. From the night of 19-20 February, Schiaperelli Observatory in Italy reported 2007 CJ15, 2007 CB27, and 2007 DD. That last object is also reported from the 25th by Camarillo Observatory in southern California. Desert Moon Observatory in New Mexico and Camarillo followed 2007 DJ, and Desert Moon observed 2007 DA. Also in the DOU, not-quite small 2007 CH15 was tracked by the Mt. Lemmon Survey in Arizona.
- See news from the week of 19 to 25 February and from previous weeks. You also can look up reports on individual small asteroids.
Object Listings -- smallest objects first [ Alpha Index | 48 Hours | top ]
2007 DC (K07D00C) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 11 meters per JPL H=27.49, MPC H=27.5
This object has been listed as an impact risk since 17 Feb. 2007.
JPL classifies 2007 DC as an Apollo and calculates an Earth MOID of 0.004133 AU (1.61 LD),
and reports this object passed Earth at 1.6 lunar distances (LD) on 8 Feb. 2007 at about 0540 UT.
Lowell Observatory reports 2007 DC has an MOID of 0.00628 AU (2.44 LD) with Mars.
Observations are reported from the following observatories in MPEC 2007-D70:
Spacewatch 1.8m telescope [291]
2007-02-25 0738-0801, 3 pos. in MPEC 2007-D70, follow-up (H)
See also information from the week ending 25 Feb. 2007.
2007 DM8 (K07D08M) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 19 meters per JPL H=26.25, MPC H=26.2
JPL classifies 2007 DM8 as an Aten and calculates an Earth MOID of 0.015395 AU (5.99 LD),
and reports this object passed Earth at 10.1 LD on 15 Feb. 2007.
Lowell Observatory reports 2007 DM8 has an MOID of 0.03638 AU (14.16 LD) with Venus.
Observations are reported from the following observatories in MPEC 2007-D75:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 0917-0939, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DN41 (K07D41N) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 20 meters per JPL H=26.11, MPC H=26.4
This object was listed from 24 until 27 Feb. 2007 as an impact risk.
JPL classifies 2007 DN41 as an Apollo and calculates an Earth MOID of 0.001736 AU (0.68 LD),
and reports this object passed Earth at 0.8 LD on 21 Feb. 2007 at 0940 UT.
Lowell Observatory reports 2007 DN41 has significant MOIDs with planets Mars (0.02578 AU =
10.03 LD) and Jupiter (0.3601 AU = 140.1 LD).
Observations are reported from the following observatories in MPEC 2007-D75:
Mt. Lemmon Survey (MLS) [G96]
2007-02-26 0710-0747, 4 pos. in MPEC 2007-D75, follow-up
Spacewatch 1.8m telescope [291]
2007-02-27 0538-0544, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DS7 (K07D07S) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 23 meters per JPL H=25.84, MPC H=25.8
This object has been listed as an impact risk since 22 Feb. 2007.
JPL classifies 2007 DS7 as an Apollo and calculates an Earth MOID of 0.000618 AU (0.24 LD),
and reports this object passed Earth at 1.8 LD on 18 Feb. 2007 at 0459 UT.
Observations are reported from the following observatories in MPECs 2007-D70 and 2007-D75:
Spacewatch 1.8m telescope [291]
2007-02-25 0912-0925, 3 pos. in MPEC 2007-D70, follow-up
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 0942-0950, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DD (K07D00D) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 24 meters per JPL H=25.75, MPC H=25.8
This object was listed from 17 until 19 Feb. 2007 as an impact risk.
JPL classifies 2007 DD as an Aten and calculates an Earth MOID of 0.005918 AU (2.30 LD),
and reports this object passed Earth at 4.0 LD on 13 Feb. 2007 at 2306 UT.
Observations are reported from the following observatories in MPECs 2007-D70 and 2007-E12:
Schiaparelli Obs. [204]
2007-02-20 0310-0316, 5 pos. in MPEC 2007-D70, follow-up
Camarillo Obs. [670]
2007-02-25 1022-1026, 3 pos. in MPEC 2007-D70, follow-up (F)
Begues Obs. [170]
2007-03-03 2330-2336, 4 pos. in MPEC 2007-E12, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DG8 (K07D08G) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 30 meters per JPL H=25.26, MPC H=25.3
JPL classifies 2007 DG8 as an Apollo and calculates an Earth MOID of 0.021461 AU (8.35 LD),
and reports this object passed Earth at 9.8 LD on 1 March 2007 at 0810 UT.
Lowell Observatory reports 2007 DG8 has an MOID of 0.01220 AU (4.75 LD) with Mars.
Observations are reported from the following observatories in MPECs 2007-D75, 2007-D76,
and 2007-E11:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 1007-1009, 2 pos. in MPEC 2007-D75, follow-up
Farpoint Obs. [734]
2007-02-27 0816-0837, 5 pos. in MPEC 2007-D76, follow-up
Great Shefford Obs. [J95]
2007-03-02 0227-0411, 4 pos. in MPEC 2007-E11, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DH8 (K07D08H) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 35 meters per JPL H=24.92, MPC H=24.9
JPL classifies 2007 DH8 as an Amor and calculates an Earth MOID of 0.070547 AU (27.45 LD),
and reports this object passed Earth at 31.5 LD on 20 Feb. 2007.
Observations are reported from the following observatories in MPEC 2007-D75:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 0610-0622, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DX40 (K07D40X) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 41 meters per JPL H=24.61, MPC H=24.6
This object has been listed as an impact risk since 23 Feb. 2007.
JPL classifies 2007 DX40 as an Apollo and calculates an Earth MOID of 0.000607 AU (0.24 LD),
and reports this object passes Earth at 7.7 LD on 4 March 2007 at 0426 UT.
Lowell Observatory reports 2007 DX40 has significant MOIDs with planets Venus (0.00064 AU =
0.25 LD) and Mars (0.04052 AU = 15.77 LD).
Observations are reported from the following observatories in MPECs 2007-D70, 2007-D75,
and 2007-E11:
Spacewatch 1.8m telescope [291]
2007-02-25 0831-0842, 3 pos. in MPEC 2007-D70, follow-up (t)
2007-02-27 0601-0612, 3 pos. in MPEC 2007-D75, follow-up (t)
Mt. John Obs. [474]
2007-02-25 1131-1152, 5 pos. in MPEC 2007-D70, follow-up
Great Shefford Obs. [J95]
2007-03-02 0158-0203, 3 pos. in MPEC 2007-E11, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DJ (K07D00J) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 46 meters per JPL H=24.32, MPC H=24.3
This object was listed from 18 until 18 Feb. 2007 as an impact risk.
JPL classifies 2007 DJ as an Apollo and calculates an Earth MOID of 0.018038 AU (7.02 LD),
and reports this object passed Earth at 7.4 LD on 3 March 2007 at 1924 UT.
Observations are reported from the following observatories in MPECs 2007-D70, 2007-D75,
2007-D76, 2007-E01, 2007-E11, and 2007-E12:
Desert Moon Obs. [448]
2007-02-25 0417-0429, 3 pos. in MPEC 2007-D70, follow-up
Camarillo Obs. [670]
2007-02-25 0620-0627, 3 pos. in MPEC 2007-D70, follow-up
2007-02-25 0921-0921, 1 pos. in MPEC 2007-D70, follow-up
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 0643-0644, 2 pos. in MPEC 2007-D75, follow-up
Mt. Lemmon Survey (MLS) [G96]
2007-02-26 0352-0424, 4 pos. in MPEC 2007-D75, follow-up
Catalina Sky Survey (CSS) [703]
2007-02-26 0538-0625, 4 pos. in MPEC 2007-D75, follow-up
Fiamene Obs. [B23]
2007-02-26 1945-1953, 5 pos. in MPEC 2007-D76, follow-up
Peschiera del Garda Obs. [A53]
2007-02-26 2043-2108, 4 pos. in MPEC 2007-E01, follow-up
2007-02-27 2156-2209, 4 pos. in MPEC 2007-E01, follow-up
Madonna di Dossobuono Obs. [560]
2007-02-26 2046-2055, 4 pos. in MPEC 2007-D76, follow-up
Spacewatch 0.9m telescope [691]
2007-02-27 0318-0348, 2 pos. in MPEC 2007-D76, follow-up (tH)
Balzaretto Obs. [A81]
2007-02-27 2131-2149, 3 pos. in MPEC 2007-E01, follow-up
Great Shefford Obs. [J95]
2007-03-01 2240-2244, 3 pos. in MPEC 2007-E01, follow-up
Petit Jean Mountain South Obs. [H45]
2007-03-02 0823-0834, 12 pos. in MPEC 2007-E11, follow-up
Begues Obs. [170]
2007-03-04 0035-0045, 6 pos. in MPEC 2007-E12, follow-up
See also information from the week ending 25 Feb. 2007.
2007 CJ15 (K07C15J) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 47 meters per JPL H=24.31, MPC H=24.4
JPL classifies 2007 CJ15 as an Apollo and calculates an Earth MOID of 0.037121 AU (14.44 LD),
and reports this object passed Earth at 14.8 LD on 18 Feb. 2007.
Observations are reported from the following observatories in MPEC 2007-D70:
Schiaparelli Obs. [204]
2007-02-19 2317-2324, 2 pos. in MPEC 2007-D70, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DJ8 (K07D08J) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 51 meters per JPL H=24.13, MPC H=24.3
JPL classifies 2007 DJ8 as an Amor and calculates an Earth MOID of 0.076966 AU (29.95 LD),
and reports this object passed Earth at 30.4 LD on 19 Feb. 2007.
Observations are reported from the following observatories in MPEC 2007-D76:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 0905-0912, 2 pos. in MPEC 2007-D76, follow-up
See also information from the week ending 25 Feb. 2007.
2007 CL26 (K07C26L) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 65 meters per JPL H=23.58, MPC H=23.6
JPL classifies 2007 CL26 as an Apollo and calculates an Earth MOID of 0.077140 AU (30.02 LD),
and reports this object passed Earth at 29.9 LD on 21 Jan. 2007.
Observations are reported from the following observatories in MPEC 2007-D70:
Spacewatch 1.8m telescope [291]
2007-02-25 0456-0507, 3 pos. in MPEC 2007-D70, follow-up (H)
See also information from the week ending 25 Feb. 2007.
2007 DB61 (K07D61B) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 70 meters per JPL H=23.43, MPC H=23.6
JPL classifies 2007 DB61 as an Aten and calculates an Earth MOID of 0.013590 AU (5.29 LD),
and reports this object passed Earth at 7.1 LD on 21 Feb. 2007 at 0957 UT.
Observations are reported from the following observatories in MPECs 2007-D74, 2007-D75,
and 2007-D76:
LINEAR [704]
2007-02-25 0621-0728, 5 pos. in MPEC 2007-D74, discovery (*)
2007-02-26 0525-0614, 4 pos. in MPEC 2007-D74, confirmation
Remanzacco Obs. [473]
2007-02-26 2305-2324, 3 pos. in MPEC 2007-D75, follow-up
Petit Jean Mountain South Obs. [H45]
2007-02-27 0810-0820, 8 pos. in MPEC 2007-D76, follow-up
Balzaretto Obs. [A81]
2007-02-27 2052-2112, 3 pos. in MPEC 2007-D76, follow-up
2007 CT26 (K07C26T) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 72 meters per JPL H=23.36, MPC H=23.4
This object has been listed as an impact risk since 14 Feb. 2007.
JPL classifies 2007 CT26 as an Aten and calculates an Earth MOID of 0.002423 AU (0.94 LD),
and reports this object passed Earth at 2.4 LD on 8 Feb. 2007 at 0655 UT.
Lowell Observatory reports 2007 CT26 has an MOID of 0.01165 AU (4.53 LD) with Venus.
Observations are reported from the following observatories in MPEC 2007-D75:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 0513-0558, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DQ40 (K07D40Q) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 75 meters per JPL H=23.28, MPC H=23.3
JPL classifies 2007 DQ40 as an Apollo and calculates an Earth MOID of 0.012722 AU (4.95 LD),
and reports this object passed Earth at 9.7 LD on 12 Feb. 2007 at about 1833 UT.
Lowell Observatory reports 2007 DQ40 has significant MOIDs with planets Venus (0.01790 AU =
6.96 LD) and Mars (0.01598 AU = 6.22 LD).
Observations are reported from the following observatories in MPECs 2007-D75 and 2007-D76:
Mt. Lemmon Survey (MLS) [G96]
2007-02-26 0530-0559, 4 pos. in MPEC 2007-D75, follow-up
Fiamene Obs. [B23]
2007-02-26 2210-2232, 5 pos. in MPEC 2007-D76, follow-up
Farpoint Obs. [734]
2007-02-27 0802-0807, 3 pos. in MPEC 2007-D76, follow-up
See also information from the week ending 25 Feb. 2007.
2007 CB27 (K07C27B) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 79 meters per JPL H=23.16, MPC H=23.3
JPL classifies 2007 CB27 as an Amor and calculates an Earth MOID of 0.062822 AU (24.44 LD),
and reports this object passed Earth at 26.0 LD on 16 Feb. 2007.
Observations are reported from the following observatories in MPEC 2007-D70:
Schiaparelli Obs. [204]
2007-02-20 0125-0135, 3 pos. in MPEC 2007-D70, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DX (K07D00X) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 87 meters per JPL H=22.95, MPC H=22.9
JPL classifies 2007 DX as an Amor and calculates an Earth MOID of 0.214074 AU (83.30 LD).
Lowell Observatory reports 2007 DX has an MOID of 0.9296 AU (361.7 LD) with Jupiter.
Observations are reported from the following observatories in MPECs 2007-D70 and 2007-D75:
Spacewatch 1.8m telescope [291]
2007-02-25 0849-0901, 3 pos. in MPEC 2007-D70, follow-up
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 1011-1020, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DA (K07D00A) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 112 meters per JPL H=22.40, MPC H=22.4
JPL classifies 2007 DA as an Apollo and calculates an Earth MOID of 0.020015 AU (7.79 LD),
and reports this object will pass Earth at 8.1 LD on 11 Feb. 2008 at about 2324 UT.
Lowell Observatory reports 2007 DA has an MOID of 0.02794 AU (10.87 LD) with Venus.
Observations are reported from the following observatories in MPEC 2007-D70:
Desert Moon Obs. [448]
2007-02-25 0619-0656, 3 pos. in MPEC 2007-D70, follow-up
See also information from the week ending 25 Feb. 2007.
2007 BC8 (K07B08C) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 120 meters per JPL H=22.25, MPC H=22.5
JPL classifies 2007 BC8 as an Amor and calculates an Earth MOID of 0.039504 AU (15.37 LD),
and reports this object passed Earth at 34.0 LD on 8 Feb. 2007.
Lowell Observatory reports 2007 BC8 has an MOID of 0.03234 AU (12.58 LD) with Mars.
Observations are reported from the following observatories in MPEC 2007-D75:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-25 1119-1122, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 4 Feb. 2007.
2007 DX60 (K07D60X) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 124 meters per JPL H=22.19, MPC H=22.1
JPL classifies 2007 DX60 as an Amor and calculates an Earth MOID of 0.203549 AU (79.20 LD).
Observations are reported from the following observatories in MPECs 2007-D72 and 2007-D75:
Spacewatch 0.9m telescope [691]
2007-02-21 0736-0839, 3 pos. in MPEC 2007-D72, prediscovery
2007-02-25 0801-0902, 3 pos. in MPEC 2007-D72, discovery (*)
Mt. Lemmon Survey (MLS) [G96]
2007-02-26 0612-0646, 4 pos. in MPEC 2007-D72, confirmation
Spacewatch 1.8m telescope [291]
2007-02-26 1140-1151, 3 pos. in MPEC 2007-D72, confirmation
2007-02-27 0453-0523, 5 pos. in MPEC 2007-D75, follow-up (H)
2007 CQ5 (K07C05Q) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 124 meters per JPL H=22.18, MPC H=22.2
This object was listed from 8 until 11 Feb. 2007 as an impact risk.
JPL classifies 2007 CQ5 as an Amor and calculates an Earth MOID of 0.115298 AU (44.86 LD).
Lowell Observatory reports 2007 CQ5 has an MOID of 0.03173 AU (12.35 LD) with Mars.
Observations are reported from the following observatories in MPECs 2007-D76 and 2007-E11:
Desert Moon Obs. [448]
2007-02-27 1221-1246, 3 pos. in MPEC 2007-D76, follow-up
2007-03-02 0704-0746, 3 pos. in MPEC 2007-E11, follow-up
See also information from the week ending 25 Feb. 2007.
2007 AS2 (K07A02S) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 127 meters per JPL H=22.13, MPC H=22.2
This object was listed from 11 until 14 Jan. 2007 as an impact risk.
JPL classifies 2007 AS2 as an Apollo and calculates an Earth MOID of 0.041650 AU (16.21 LD),
and reports this object passed Earth at 31.7 LD on 5 Jan. 2007.
Observations are reported from the following observatories in MPEC 2007-D70:
Spacewatch 1.8m telescope [291]
2007-02-25 0516-0538, 3 pos. in MPEC 2007-D70, follow-up (H)
See also information from the week ending 11 Feb. 2007.
2007 CH15 (K07C15H) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 151 meters per JPL H=21.76, MPC H=21.7 -- not small
JPL classifies 2007 CH15 as an Apollo and calculates an Earth MOID of 0.104052 AU (40.49 LD).
Observations are reported from the following observatories in MPEC 2007-D70:
Mt. Lemmon Survey (MLS) [G96]
2007-02-25 0431-0509, 4 pos. in MPEC 2007-D70, follow-up
See also information from the week ending 25 Feb. 2007.
2007 DL41 (K07D41L) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 246 meters per JPL H=20.69, MPC H=20.7 -- not small
JPL classifies 2007 DL41 as an Apollo and calculates an Earth MOID of 0.036848 AU (14.34 LD).
Lowell Observatory reports 2007 DL41 has an MOID of 0.03118 AU (12.13 LD) with Mars.
Observations are reported from the following observatories in MPEC 2007-D75:
Whipple Obs. [696{7}] coded to Tim Spahr
2007-02-24 0850-0913, 2 pos. in MPEC 2007-D75, follow-up
See also information from the week ending 25 Feb. 2007.
48+120 Hours [ Objects Listings (size order) | Object Index (alpha/xref) | top ]
Observations of 22 small objects were reported during the last 168 hours:
2007 AS2, 2007 BC8, 2007 CB27, 2007 CJ15, 2007 CL26, 2007 CQ5, 2007 CT26,
2007 DA, 2007 DB61, 2007 DC, 2007 DD, 2007 DG8, 2007 DH8, 2007 DJ, 2007 DJ8,
2007 DM8, 2007 DN41, 2007 DQ40, 2007 DS7, 2007 DX, 2007 DX40 & 2007 DX60
as well as borderline-small 2007 CH15 & not-small 2007 DL41
in MPECs:
2007-D70 time-stamped 2007 Feb. 26, 07:09 UT - Daily Orbit Update
2007-D72 time-stamped 2007 Feb. 26, 20:28 UT - 2007 DX60
2007-D74 time-stamped 2007 Feb. 26, 23:23 UT - 2007 DB61
2007-D75 time-stamped 2007 Feb. 27, 07:08 UT - Daily Orbit Update
2007-D76 time-stamped 2007 Feb. 28, 07:09 UT - Daily Orbit Update
2007-E01 time-stamped 2007 Mar. 2, 07:10 UT - Daily Orbit Update
2007-E11 time-stamped 2007 Mar. 3, 07:10 UT - Daily Orbit Update
2007-E12 time-stamped 2007 Mar. 4, 07:09 UT - Daily Orbit Update
Date & times for other sources that were parsed to compile this page:
JPL Close Approaches, downloaded at 2007 March 4, 1549 UTC
JPL NEO Orbital Elements, downloaded at 2007 March 4, 1648 UTC
Lowell Observatory Orbit intersections, time-stamped 2007 Mar 03 1916:33 UTC
MPC NEA.DAT from MPC mirror, downloaded at 2007 March 4, 1601 UTC
Risk monitoring sites, as of A/CC's check at 2007 March 4, 1547 UTC (see CRT page)
Some observation sets have MPEC codes in parentheses, such as (*) denoting discovery.
Viewing Opportunities for Small Objects [ news | size order | alpha order | top ]
This compilation shows 29 small objects as being currently in view,
including 13 not reported in the last seven days.
Viewing by date order - see this list also by designation order
Object View until MOID AU Dia H Arc Notes (calc date)
---------- ---------- -------- --- ----- --- - -----------------------
2007 DJ8 2007-03-05 0.076966 51 24.13 4 - (28 Feb.)
2007 DX40 2007-03-06 0.000607 41 24.61 9 - risk listed (3 March)
2007 CJ15 2007-03-07 0.037121 47 24.31 11 - (26 Feb.)
2007 DE8 2007-03-11 0.050256 73 23.33 1 - past obs. (23 Feb.)
2003 DZ15 2007-03-13 0.000169 121 22.23 25 - past obs. (3 Jan.)
2007 CT26 2007-03-13 0.002423 72 23.36 12 - risk listed (27 Feb.)
2007 CX50 2007-03-15 0.016029 40 24.66 6 - past obs. (22 Feb.)
2006 YH14 2007-03-15 0.091095 78 23.19 56 - past obs. (22 Feb.)
2007 CH15 2007-03-16 0.104052 151 21.76 17 - (26 Feb.)
2007 DQ40 2007-03-16 0.012722 75 23.28 5 - (28 Feb.)
2007 DA 2007-03-17 0.020015 112 22.40 9 - (26 Feb.)
2007 DJ 2007-03-17 0.018038 46 24.32 15 - was risk listed (4 March)
2007 CB27 2007-03-18 0.062822 79 23.16 10 - (26 Feb.)
2004 BK11 2007-03-20 0.279416 106 22.52 29 - faint recov. poss. (3 Dec.)
2007 BS2 2007-03-22 0.134921 76 23.24 37 - past obs. (24 Feb.)
2007 DD 2007-03-25 0.005918 24 25.75 15 - was risk listed (4 March)
2000 PN8 2007-03-26 0.079762 127 22.13 26 - bright recov. poss. (3 Dec.)
2004 FD 2007-03-26 0.015803 83 23.06 5 - (3 Jan.)
2007 DH8 2007-03-28 0.070547 35 24.92 4 - (27 Feb.)
2005 ES70 2007-03-30 0.051839 66 23.56 7 - faint recov. poss. (3 Jan.)
2007 DB61 2007-03-30 0.013590 70 23.43 3 - (28 Feb.)
2006 UQ17 2007-04-03 0.022314 141 21.90 145 - was risk listed, past obs. (20 Feb.)
2007 DL41 2007-04-10 0.036848 246 20.69 1 - not small (27 Feb.)
2007 DX60 2007-04-15 0.203549 124 22.19 6 - (27 Feb.)
2006 YD12 2007-04-19 0.044509 101 22.63 60 - past obs. (22 Feb.)
2007 DX 2007-04-30 0.214074 87 22.95 8 - (27 Feb.)
1995 SB 2007-05-05 0.279024 123 22.20 12 - faint recov. poss. (3 Jan.)
2007 BC8 2007-05-26 0.039504 120 22.25 33 - (27 Feb.)
2007 CQ5 2007-06-21 0.115298 124 22.18 23 - was risk listed (3 March)
Coming into view soon:
2004 FA5 2007-03-19 0.024584 37 24.83 5 - >6 March, faint recov. poss. (10 Feb.)
2006 UX1 2007-04-04 0.259858 128 22.11 6 - >10 March, past obs. (10 Feb.)
2002 EW8 2007-04-14 0.042496 68 23.50 38 - >9 March, faint recov. poss. (10 Feb.)
2005 GR33 2007-04-17 0.011936 132 22.04 12 - >11 March, faint recov. poss. (10 Feb.)
2006 BA9 2007-04-20 0.072674 91 22.86 32 - >11 March, faint recov. poss., past obs. (10 Feb.)
2004 RE84 2007-04-26 0.019895 132 22.05 28 - >6 March, bright recov. poss. (10 Feb.)
2000 HO40 2007-05-20 0.039459 124 22.19 10 - >12 March, faint recov. poss. (10 Feb.)
Viewing by designation order - see also Viewing by date order
Object View until MOID AU Dia H Arc Notes (calc date)
---------- ---------- -------- --- ----- --- - -----------------------
2007 DB61 2007-03-30 0.013590 70 23.43 3 - (28 Feb.)
2007 DX60 2007-04-15 0.203549 124 22.19 6 - (27 Feb.)
2007 DL41 2007-04-10 0.036848 246 20.69 1 - not small (27 Feb.)
2007 DX40 2007-03-06 0.000607 41 24.61 9 - risk listed (3 March)
2007 DQ40 2007-03-16 0.012722 75 23.28 5 - (28 Feb.)
2007 DJ8 2007-03-05 0.076966 51 24.13 4 - (28 Feb.)
2007 DH8 2007-03-28 0.070547 35 24.92 4 - (27 Feb.)
2007 DE8 2007-03-11 0.050256 73 23.33 1 - past obs. (23 Feb.)
2007 DX 2007-04-30 0.214074 87 22.95 8 - (27 Feb.)
2007 DJ 2007-03-17 0.018038 46 24.32 15 - was risk listed (4 March)
2007 DD 2007-03-25 0.005918 24 25.75 15 - was risk listed (4 March)
2007 DA 2007-03-17 0.020015 112 22.40 9 - (26 Feb.)
2007 CX50 2007-03-15 0.016029 40 24.66 6 - past obs. (22 Feb.)
2007 CB27 2007-03-18 0.062822 79 23.16 10 - (26 Feb.)
2007 CT26 2007-03-13 0.002423 72 23.36 12 - risk listed (27 Feb.)
2007 CJ15 2007-03-07 0.037121 47 24.31 11 - (26 Feb.)
2007 CH15 2007-03-16 0.104052 151 21.76 17 - (26 Feb.)
2007 CQ5 2007-06-21 0.115298 124 22.18 23 - was risk listed (3 March)
2007 BC8 2007-05-26 0.039504 120 22.25 33 - (27 Feb.)
2007 BS2 2007-03-22 0.134921 76 23.24 37 - past obs. (24 Feb.)
2006 YH14 2007-03-15 0.091095 78 23.19 56 - past obs. (22 Feb.)
2006 YD12 2007-04-19 0.044509 101 22.63 60 - past obs. (22 Feb.)
2006 UQ17 2007-04-03 0.022314 141 21.90 145 - was risk listed, past obs. (20 Feb.)
2006 UX1 2007-04-04 0.259858 128 22.11 6 - >10 March, past obs. (10 Feb.)
2006 BA9 2007-04-20 0.072674 91 22.86 32 - >11 March, faint recov. poss., past obs. (10 Feb.)
2005 GR33 2007-04-17 0.011936 132 22.04 12 - >11 March, faint recov. poss. (10 Feb.)
2005 ES70 2007-03-30 0.051839 66 23.56 7 - faint recov. poss. (3 Jan.)
2004 RE84 2007-04-26 0.019895 132 22.05 28 - >6 March, bright recov. poss. (10 Feb.)
2004 FA5 2007-03-19 0.024584 37 24.83 5 - >6 March, faint recov. poss. (10 Feb.)
2004 FD 2007-03-26 0.015803 83 23.06 5 - (3 Jan.)
2004 BK11 2007-03-20 0.279416 106 22.52 29 - faint recov. poss. (3 Dec.)
2003 DZ15 2007-03-13 0.000169 121 22.23 25 - past obs. (3 Jan.)
2002 EW8 2007-04-14 0.042496 68 23.50 38 - >9 March, faint recov. poss. (10 Feb.)
2000 PN8 2007-03-26 0.079762 127 22.13 26 - bright recov. poss. (3 Dec.)
2000 HO40 2007-05-20 0.039459 124 22.19 10 - >12 March, faint recov. poss. (10 Feb.)
1995 SB 2007-05-05 0.279024 123 22.20 12 - faint recov. poss. (3 Jan.)
Out-of-view date based on MPES solar elongation <40° and/or magnitude V>22.0 at 1200 UT
geocentric. (Not factored in is any lunar interference with viewing.)
Objects are linked in the left-most column only if observed in the last seven days,
while objects with earlier small-object reporting are linked under "Notes."
Diameter ("Dia") is in meters, a very rough estimate from brightness (H).
Observing "Arc" is from MPES in days or number of oppositions.
"In view" does not necessarily mean locatable for objects with short arcs in prior years
and for which a large search or accidental rediscovery are the best hopes.
Small object observation cross index [ size order | 48 Hours | viewing | top ]
| Object | Observed by MPC code |
|---|
| 2007 AS2 | 291 |
| 2007 BC8 | 696 |
| 2007 CB27 | 204 |
| 2007 CH15 | G96 |
| 2007 CJ15 | 204 |
| 2007 CL26 | 291 |
| 2007 CQ5 | 448 |
| 2007 CT26 | 696 |
| 2007 DA | 448 |
| 2007 DB61 | 473, 704, A81, H45 |
| 2007 DC | 291 |
| 2007 DD | 170, 204, 670 |
| 2007 DG8 | 696, 734, J95 |
| 2007 DH8 | 696 |
| 2007 DJ | 170, 448, 560, 670, 691, 696, 703, A53, A81, B23, G96, H45, J95 |
| 2007 DJ8 | 696 |
| 2007 DL41 | 696 |
| 2007 DM8 | 696 |
| 2007 DN41 | 291, G96 |
| 2007 DQ40 | 734, B23, G96 |
| 2007 DS7 | 291, 696 |
| 2007 DX | 291, 696 |
| 2007 DX40 | 291, 474, J95 |
| 2007 DX60 | 291, 691, G96 |
|
| Code | Observatory | Objects Observed |
|---|
| 170 | Begues Obs. | 2007 DD, 2007 DJ |
| 204 | Schiaparelli Obs. | 2007 CB27, 2007 CJ15, 2007 DD |
| 291 | Spacewatch 1.8m telescope | 2007 AS2, 2007 CL26, 2007 DC, 2007 DN41, 2007 DS7, 2007 DX, 2007 DX40, 2007 DX60 |
| 448 | Desert Moon Obs. | 2007 CQ5, 2007 DA, 2007 DJ |
| 473 | Remanzacco Obs. | 2007 DB61 |
| 474 | Mt. John Obs. | 2007 DX40 |
| 560 | Madonna di Dossobuono Obs. | 2007 DJ |
| 670 | Camarillo Obs. | 2007 DD, 2007 DJ |
| 691 | Spacewatch 0.9m telescope | 2007 DJ, 2007 DX60 |
| 6967 | Whipple Obs. - Tim Spahr | 2007 BC8, 2007 CT26, 2007 DG8, 2007 DH8, 2007 DJ, 2007 DJ8, 2007 DL41, 2007 DM8, 2007 DS7, 2007 DX |
| 703 | Catalina Sky Survey | 2007 DJ |
| 704 | LINEAR | 2007 DB61 |
| 734 | Farpoint Obs. | 2007 DG8, 2007 DQ40 |
| A53 | Peschiera del Garda Obs. | 2007 DJ |
| A81 | Balzaretto Obs. | 2007 DB61, 2007 DJ |
| B23 | Fiamene Obs. | 2007 DJ, 2007 DQ40 |
| G96 | Mt. Lemmon Survey | 2007 CH15, 2007 DJ, 2007 DN41, 2007 DQ40, 2007 DX60 |
| H45 | Petit Jean Mtn. South Obs. | 2007 DB61, 2007 DJ |
| J95 | Great Shefford Obs. | 2007 DG8, 2007 DJ, 2007 DX40 |
|
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