Earth's Busy Neighborhood
ACC's Small Object Report for 8-14 January 2007
A semi-automated report compiled on 14 January 2007 at 2359 UTC
Eighteen small asteroids* reported in the last 168 hours, during which three were newly discovered.
*Two almost-small asteroids are also included in this week's reporting.
Currently 1,215 NEAs are listed with H>22.0 by JPL and/or the MPC (1,032 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 |
weekly |
top ]
- Jan. 14: On Sunday, Daily Orbit Update (DOU) MPEC 2007-A53 reports observations of three small asteroids, including 2007 AS2 which today was both delisted as an impact risk and reclassified as "small." It was observed last night by Herrenberg and Great Shefford observatories in Germany and England and had been tracked earlier by Gnosca Observatory in Switzerland after being discovered and confirmed alone by LINEAR in New Mexico on January 10th and 11th. Consell Observatory in Spain added about five days to what had been risk-listed 2006 XP4's 24-day observing arc and Linz Observatory in Austria added about six days to 2006 YH14's former twelve-day arc. And not-quite-small 2006 UQ17 was followed by New Millennium Observatory in Italy.
- Jan. 13: On Saturday no observations of small asteroids have been reported.
- Jan. 12: On Friday the year's second small-asteroid discovery has been announced. 2007 AU2 was found Wednesday morning by the Catalina Sky Survey in Arizona and the discovery was confirmed last night by Great Shefford Observatory in England. JPL reports that this object will pass Earth in two days at 10.3 lunar distances.
Today's DOU MPEC 2007-A43 reports observations of seven small asteroids. Great Shefford Observatory provided the first follow-up for 2007 AA2, which was delisted today as an impact risk. Observations from the Whipple Observatory in Arizona coded to Tim Spahr from December 21st added about a day to what had been a seven-day observing arc for risk-listed 2006 XZ2, which is now out of view for all telescopes used in NEO work. From that same session also came observations of 2006 XN4, 2006 YB, and 2006 YP, which are all calculated to go out of view for most NEO observers in the next two to three days. And from Spahr/Whipple on December 23rd there is astrometry reported for 2006 YM, which went out of view yesterday, and 2006 XO4. And Petit Jean Mountain South and Hamamatsu-Yuto observatories in Arkansas and Japan tracked almost-small 2006 UQ17.
- Jan. 11: Thursday DOU MPEC 2007-A40 reports observations of one small and two marginal asteroids. Spacewatch in Arizona used its 1.8-meter telescope to double the observation arc of 2006 XY2 to about 28 days. Hamamatsu-Yuto Observatory in Japan tracked 2006 UQ17, which has slipped again across the "small" classification boundary. Another object just outside that boundary is 2006 AM4 which had an observing arc of only 24 days ending last February 1st. Today's DOU reports that this upcoming radar target was recovered yesterday morning by the Mt. Lemmon Survey in Arizona and by Spacewatch with its 1.8-meter telescope. 2006 AM4 plays tag with the three innermost planets and will pass Earth at 5.2 lunar distances this February 1st.
- Jan. 10: On Wednesday we have the first announcement this year of a small-asteroid discovery. JPL reports that 2007 AA2 passed Earth at 10.4 lunar distances very early on January 6th. It was discovered by the Catalina Sky Survey in Arizona yesterday morning UT and was confirmed by the Mt. Lemmon Survey (MLS) in Arizona this morning. Update: 2006 AA2 has been listed as an impact risk.
Today's DOU MPEC 2007-A32 reports observations of three small asteroids. From yesterday the MLS added fourteen days to the observing arc of two objects -- 2006 XX with a former arc of sixteen days and 2006 YP which had an arc of nine days. And 2006 UQ17 was tracked by Brainerd Observatory in Minnesota, LINEAR in New Mexico, and University Hills, Petit Jean Mountain South, and Hamamatsu-Yuto observatories in southern California, Arkansas, and Japan.
- Jan. 9: Tuesday's DOU MPEC 2007-A28 reports observations of eight small asteroids. The Mt. Lemmon Survey in Arizona added about eight days to 2006 YH14's four-day observing arc and, along with Table Mountain and Sandlot observatories in southern California and Kansas, doubled 2006 YJ2's arc to about eighteen days. 2006 YH2, which is now out of view for most NEO observers, is reported from Spacewatch in Arizona with its 0.9-meter telescope, adding about a day to what had been a three-day arc. University Hills, Petit Jean Mountain South, and Hamamatsu-Yuto observatories in southern California, Arkansas, and Japan tracked 2006 UQ17. And risk-listed 2006 XP4 was reported from Sandlot Observatory from January 7th and in observations coded to Tim Spahr via Whipple Observatory in Arizona from December 21st. Also from Spahr/Whipple on the 21st are 2006 XW and 2006 XX from within their current observing arcs, and 2006 XW4, adding about two days to what had been a nine-day arc for that object now out of view for most NEO observers.
- Jan. 8: Monday DOU MPEC 2007-A18 reports observations of three small asteroids. Jornada Observatory in New Mexico nearly doubled 2006 XO4's observing arc from 12.512 to 24.701 days. University Hills Observatory in southern California kept track of 2006 UQ17. And Spacewatch reported 2005 CN from the end of its current arc on December 24th.
- See news from the week of 1-7 January and from previous weeks, and you also can look up individual small asteroids.
Object Listings -- smallest objects first [ Alpha Index | 48 Hours | top ]
2006 XZ2 (K06X02Z) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 13 meters per JPL H=27.11, MPC H=27.1
This object has been listed as an impact risk since 14 Dec. 2006.
JPL classifies 2006 XZ2 as an Apollo and calculates an Earth MOID of 0.002436 AU (0.95 LD),
and reports this object passed Earth at 4.8 lunar distances (LD) on 22 Dec. 2006 at 0219 UT.
Lowell Observatory reports 2006 XZ2 has an MOID of 0.00511 AU (1.99 LD) with Mars.
Observations are reported from the following observatories in MPEC 2007-A43:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 1059-1147, 3 pos. in MPEC 2007-A43, follow-up
See also information from the week ending 24 Dec. 2006.
2006 YH2 (K06Y02H) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 28 meters per JPL H=25.44, MPC H=25.4
JPL classifies 2006 YH2 as an Amor and calculates an Earth MOID of 0.098776 AU (38.43 LD).
Observations are reported from the following observatories in MPEC 2007-A28:
Spacewatch 0.9m telescope [691]
2006-12-25 0335-0335, 1 pos. in MPEC 2007-A28, follow-up (t)
See also information from the week ending 31 Dec. 2006.
2007 AA2 (K07A02A) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 40 meters per JPL H=24.65, MPC H=24.6
This object was listed from 10 until 12 Jan. 2007 as an impact risk.
JPL classifies 2007 AA2 as an Apollo and calculates an Earth MOID of 0.010256 AU (3.99 LD),
and reports this object passed Earth at 10.5 LD on 6 Jan. 2007.
Observations are reported from the following observatories in MPECs 2007-A33 and 2007-A43:
Catalina Sky Survey (CSS) [703]
2007-01-09 0606-0653, 8 pos. in MPEC 2007-A33, discovery (*)
Mt. Lemmon Survey (MLS) [G96]
2007-01-10 0543-0613, 11 pos. in MPEC 2007-A33, confirmation
Great Shefford Obs. [J95]
2007-01-11 2029-2043, 3 pos. in MPEC 2007-A43, follow-up
2006 YM (K06Y00M) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 44 meters per JPL H=24.41, MPC H=24.4
JPL classifies 2006 YM as an Aten and calculates an Earth MOID of 0.023528 AU (9.15 LD),
and reports this object passed Earth at 10.0 LD on 20 Dec. 2006 at 0358 UT.
Observations are reported from the following observatories in MPEC 2007-A43:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-23 0742-0743, 2 pos. in MPEC 2007-A43, follow-up
See also information from the week ending 31 Dec. 2006.
2006 XW4 (K06X04W) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 47 meters per JPL H=24.28, MPC H=24.3
JPL classifies 2006 XW4 as an Apollo and calculates an Earth MOID of 0.005467 AU (2.13 LD),
and reports this object passed Earth at 22.9 LD on 7 Dec. 2006.
Observations are reported from the following observatories in MPEC 2007-A28:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 0923-0929, 2 pos. in MPEC 2007-A28, follow-up
See also information from the week ending 31 Dec. 2006.
2007 AU2 (K07A02U) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 51 meters per JPL H=24.12, MPC H=24.1
JPL classifies 2007 AU2 as an Apollo and calculates an Earth MOID of 0.012071 AU (4.70 LD),
and reports this object passed Earth at 10.3 LD on 14 Jan. 2007.
Observations are reported from the following observatories in MPEC 2007-A44:
Catalina Sky Survey (CSS) [703]
2007-01-10 0803-0921, 8 pos. in MPEC 2007-A44, discovery (*)
2007-01-10 1155-1253, 8 pos. in MPEC 2007-A44, confirmation
Great Shefford Obs. [J95]
2007-01-11 2315-2318, 3 pos. in MPEC 2007-A44, confirmation
2006 YB (K06Y00B) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 52 meters per JPL H=24.05, MPC H=24.1
JPL classifies 2006 YB as an Apollo and calculates an Earth MOID of 0.053951 AU (20.99 LD),
and reports this object passed Earth at 31.8 LD on 26 Dec. 2006.
Observations are reported from the following observatories in MPEC 2007-A43:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 1114-1120, 2 pos. in MPEC 2007-A43, follow-up
See also information from the week ending 31 Dec. 2006.
2006 XP4 (K06X04P) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 56 meters per JPL H=23.91, MPC H=23.9
This object has been listed as an impact risk since 16 Dec. 2006.
JPL classifies 2006 XP4 as an Aten and calculates an Earth MOID of 0.004109 AU (1.60 LD),
and reports this object passed Earth at 28.6 LD on 9 Jan. 2007.
Lowell Observatory reports 2006 XP4 has an MOID of 0.02029 AU (7.89 LD) with Venus.
Observations are reported from the following observatories in MPECs 2007-A28 and 2007-A53:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 1123-1129, 2 pos. in MPEC 2007-A28, follow-up
Sandlot Obs. [H36]
2007-01-07 0703-0728, 5 pos. in MPEC 2007-A28, follow-up
Consell Obs. [176]
2007-01-12 2319-2336, 5 pos. in MPEC 2007-A53, follow-up
See also information from the week ending 7 Jan. 2007.
2006 XN4 (K06X04N) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 58 meters per JPL H=23.82, MPC H=24.0
JPL classifies 2006 XN4 as an Apollo and calculates an Earth MOID of 0.035049 AU (13.64 LD),
and reports this object passed Earth at 14.7 LD on 14 Dec. 2006.
Observations are reported from the following observatories in MPEC 2007-A43:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 1131-1133, 2 pos. in MPEC 2007-A43, follow-up
See also information from the week ending 31 Dec. 2006.
2006 XW (K06X00W) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 61 meters per JPL H=23.71, MPC H=23.6
JPL classifies 2006 XW as an Amor and calculates an Earth MOID of 0.057976 AU (22.56 LD).
Observations are reported from the following observatories in MPEC 2007-A28:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 0934-0942, 2 pos. in MPEC 2007-A28, follow-up
See also information from the week ending 31 Dec. 2006.
2006 YP (K06Y00P) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 63 meters per JPL H=23.66, MPC H=23.7
JPL classifies 2006 YP as an Apollo and calculates an Earth MOID of 0.025811 AU (10.04 LD),
and reports this object passed Earth at 22.6 LD on 30 Dec. 2006.
Observations are reported from the following observatories in MPECs 2007-A32 and 2007-A43:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-23 0900-0903, 2 pos. in MPEC 2007-A43, follow-up
Mt. Lemmon Survey (MLS) [G96]
2007-01-09 1254-1257, 4 pos. in MPEC 2007-A32, follow-up
See also information from the week ending 7 Jan. 2007.
2006 XX (K06X00X) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 68 meters per JPL H=23.50, MPC H=23.4
JPL classifies 2006 XX as an Amor and calculates an Earth MOID of 0.080236 AU (31.22 LD),
and reports this object passed Earth at 31.5 LD on 22 Nov. 2006.
Observations are reported from the following observatories in MPECs 2007-A28 and 2007-A32:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-21 0947-0956, 2 pos. in MPEC 2007-A28, follow-up
Mt. Lemmon Survey (MLS) [G96]
2007-01-09 0812-0842, 4 pos. in MPEC 2007-A32, follow-up
See also information from the week ending 31 Dec. 2006.
2006 XO4 (K06X04O) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 72 meters per JPL H=23.36, MPC H=23.4
JPL classifies 2006 XO4 as an Aten and calculates an Earth MOID of 0.027667 AU (10.77 LD),
and reports this object passed Earth at 29.8 LD on 19 Dec. 2006.
Observations are reported from the following observatories in MPECs 2007-A18 and 2007-A43:
Whipple Obs. [696{7}] coded to Tim Spahr
2006-12-23 0804-0806, 2 pos. in MPEC 2007-A43, follow-up
Jornada Obs. [715]
2007-01-08 0404-0428, 3 pos. in MPEC 2007-A18, follow-up (I)
See also information from the week ending 31 Dec. 2006.
2006 YH14 (K06Y14H) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 75 meters per JPL H=23.26, MPC H=23.3
JPL classifies 2006 YH14 as an Amor and calculates an Earth MOID of 0.091097 AU (35.45 LD),
and reports this object passed Earth at 38.5 LD on 13 Jan. 2007.
Observations are reported from the following observatories in MPECs 2007-A28 and 2007-A53:
Mt. Lemmon Survey (MLS) [G96]
2007-01-08 0927-0932, 4 pos. in MPEC 2007-A28, follow-up
Linz Obs. [540]
2007-01-13 2122-2144, 3 pos. in MPEC 2007-A53, follow-up
See also information from the week ending 7 Jan. 2007.
2005 CN (K05C00N) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 85 meters per JPL H=23.01, MPC H=23.0
JPL classifies 2005 CN as an Apollo and calculates an Earth MOID of 0.029212 AU (11.37 LD).
Observations are reported from the following observatories in MPEC 2007-A18:
Spacewatch 0.9m telescope [691]
2006-12-24 0548-0613, 2 pos. in MPEC 2007-A18, follow-up (t)
See also information from the week ending 31 Dec. 2006.
2006 XY2 (K06X02Y) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 104 meters per JPL H=22.56, MPC H=22.5
JPL classifies 2006 XY2 as an Amor and calculates an Earth MOID of 0.182560 AU (71.04 LD).
Observations are reported from the following observatories in MPEC 2007-A40:
Spacewatch 1.8m telescope [291]
2007-01-10 0833-0844, 3 pos. in MPEC 2007-A40, follow-up
See also information from the week ending 7 Jan. 2007.
2006 YJ2 (K06Y02J) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 125 meters per JPL H=22.17, MPC H=22.2
JPL classifies 2006 YJ2 as an Amor and calculates an Earth MOID of 0.092302 AU (35.92 LD),
and reports this object passed Earth at 38.4 LD on 25 Dec. 2006.
Observations are reported from the following observatories in MPEC 2007-A28:
Table Mountain Obs. [673{5}] coded to Jim Young
2007-01-07 0414-0434, 4 pos. in MPEC 2007-A28, follow-up
Sandlot Obs. [H36]
2007-01-07 0753-0812, 4 pos. in MPEC 2007-A28, follow-up
Mt. Lemmon Survey (MLS) [G96]
2007-01-08 0812-0831, 3 pos. in MPEC 2007-A28, follow-up
See also information from the week ending 31 Dec. 2006.
2007 AS2 (K07A02S) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 130 meters per JPL H=22.08, MPC H=21.8
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 0.041691 AU (16.22 LD),
and reports this object passed Earth at 31.8 LD on 5 Jan. 2007.
Observations are reported from the following observatories in MPECs 2007-A41, 2007-A43,
and 2007-A53:
LINEAR [704]
2007-01-09 0446-0525, 3 pos. in MPEC 2007-A41, discovery (*)
2007-01-10 0311-0426, 9 pos. in MPEC 2007-A41, confirmation
Gnosca Obs. [143]
2007-01-11 1710-1718, 3 pos. in MPEC 2007-A43, follow-up
Herrenberg Obs. [240]
2007-01-13 1939-1952, 5 pos. in MPEC 2007-A53, follow-up
Great Shefford Obs. [J95]
2007-01-13 2351-2359, 4 pos. in MPEC 2007-A53, follow-up
2006 UQ17 (K06U17Q) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 139 meters per JPL H=21.93, MPC H=22.0 -- not small
This object was listed from 21 until 22 Oct. 2006 as an impact risk.
JPL classifies 2006 UQ17 as an Apollo and calculates an Earth MOID of 0.022315 AU (8.68 LD),
and reports this object passed Earth at 11.3 LD on 2 Jan. 2007.
Lowell Observatory reports 2006 UQ17 has an MOID of 0.00882 AU (3.43 LD) with Mars.
Observations are reported from the following observatories in MPECs 2007-A18, 2007-A28,
2007-A32, 2007-A40, 2007-A43, and 2007-A53:
University Hills Obs. [G72]
2007-01-07 0847-0933, 6 pos. in MPEC 2007-A18, follow-up
2007-01-08 0645-0726, 6 pos. in MPEC 2007-A28, follow-up
2007-01-09 0904-0942, 6 pos. in MPEC 2007-A32, follow-up
Brainerd Obs. [726]
2007-01-08 0256-0320, 6 pos. in MPEC 2007-A32, follow-up
LINEAR [704]
2007-01-08 0635-0747, 5 pos. in MPEC 2007-A32, follow-up
2007-01-09 0604-0717, 8 pos. in MPEC 2007-A32, follow-up
Petit Jean Mountain South Obs. [H45]
2007-01-08 0840-0849, 8 pos. in MPEC 2007-A28, follow-up
2007-01-09 0911-0922, 7 pos. in MPEC 2007-A32, follow-up
2007-01-11 0805-0814, 8 pos. in MPEC 2007-A43, follow-up
Hamamatsu-Yuto Obs. [379]
2007-01-08 1309-1348, 11 pos. in MPEC 2007-A28, follow-up
2007-01-09 1306-1357, 10 pos. in MPEC 2007-A32, follow-up
2007-01-10 1306-1342, 11 pos. in MPEC 2007-A40, follow-up
2007-01-11 1421-1504, 14 pos. in MPEC 2007-A43, follow-up
New Millennium Obs. [A24]
2007-01-12 2144-2252, 4 pos. in MPEC 2007-A53, follow-up
See also information from the week ending 7 Jan. 2007.
2006 AM4 (K06A04M) [ JPL Orbit Viewer | NEODyS object home | news | viewing | index | top ]
Size estimate: 140 meters per JPL H=21.92, MPC H=21.9 -- not small
This object was listed from 10 until 18 Jan. 2006 as an impact risk.
JPL classifies 2006 AM4 as an Aten and calculates an Earth MOID of 0.011027 AU (4.29 LD),
and reports this object will pass Earth at 5.2 LD on 1 Feb. 2007 at 0705 UT.
Lowell Observatory reports 2006 AM4 has significant MOIDs with planets Mercury (0.00948 AU =
3.69 LD) and Venus (0.01045 AU = 4.07 LD).
Observations are reported from the following observatories in MPEC 2007-A40:
Mt. Lemmon Survey (MLS) [G96]
2007-01-10 0820-0837, 4 pos. in MPEC 2007-A40, follow-up
Spacewatch 1.8m telescope [291]
2007-01-10 0901-0922, 3 pos. in MPEC 2007-A40, follow-up (H)
See also information from the week ending 5 Feb. 2006.
48+120 Hours [ Objects Listings (size order) | Object Index (alpha/xref) | top ]
Observations of 18 small objects were reported during the last 168 hours:
2005 CN, 2006 XN4, 2006 XO4, 2006 XP4, 2006 XW, 2006 XW4, 2006 XX, 2006 XY2, 2006 XZ2,
2006 YB, 2006 YH2, 2006 YH14, 2006 YJ2, 2006 YM, 2006 YP, 2007 AA2, 2007 AS2 & 2007 AU2,
as well as almost-small asteroids 2006 AM4 & 2006 UQ17
in MPECs:
2007-A18 time-stamped 2007 Jan. 8, 07:06 UT - Daily Orbit Update
2007-A28 time-stamped 2007 Jan. 9, 07:05 UT - Daily Orbit Update
2007-A32 time-stamped 2007 Jan. 10, 07:06 UT - Daily Orbit Update
2007-A33 time-stamped 2007 Jan. 10, 13:42 UT - 2007 AA2
2007-A40 time-stamped 2007 Jan. 11, 07:06 UT - Daily Orbit Update
2007-A41 time-stamped 2007 Jan. 11, 17:26 UT - 2007 AS2
2007-A43 time-stamped 2007 Jan. 12, 07:06 UT - Daily Orbit Update
2007-A44 time-stamped 2007 Jan. 12, 15:15 UT - 2007 AU2
2007-A53 time-stamped 2007 Jan. 14, 07:06 UT - Daily Orbit Update
Date & times for other sources that were parsed to compile this page:
JPL Close Approaches, downloaded at 2007 Jan. 14, 1531 UTC
JPL NEO Orbital Elements, downloaded at 2007 Jan. 14, 1538 UTC
Lowell Observatory Orbit intersections, time-stamped 2007 Jan 13 1927:17 UTC
MPC NEA.DAT from MPC mirror, downloaded at 2007 Jan. 14, 1530 UTC
Risk monitoring sites, as of A/CC's check at 2007 Jan. 15, 0452 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 19 small objects as being currently in view,
including 6 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)
---------- ---------- -------- --- ----- --- - -----------------------
2006 YP 2007-01-15 0.025811 63 23.66 23 - (12 Jan.)
2006 XX 2007-01-19 0.080236 68 23.50 30 - (10 Jan.)
2007 AU2 2007-01-19 0.012071 51 24.12 2 - (12 Jan.)
2005 CN 2007-01-27 0.029212 85 23.01 3op - (8 Jan.)
2006 XO4 2007-01-27 0.027667 72 23.36 25 - (12 Jan.)
2006 YA 2007-01-29 0.048686 82 23.07 19 - past obs. (6 Jan.)
2006 YP44 2007-02-02 0.001433 62 23.67 9 - was risk listed, past obs. (7 Jan.)
2006 AM4 2007-02-03 0.011027 140 21.92 2op - was risk listed, "only 1 night", radar target (11 Jan.)
2007 AA2 2007-02-04 0.010256 40 24.65 3 - was risk listed (12 Jan.)
2003 WP25 2007-02-07 0.023419 45 24.38 3op - (9 Dec.)
2006 XP4 2007-02-14 0.004109 56 23.91 29 - risk listed (14 Jan.)
2006 XY2 2007-02-18 0.182560 104 22.56 28 - (11 Jan.)
2006 YJ2 2007-02-19 0.092302 125 22.17 18 - (9 Jan.)
2007 AS2 2007-02-24 0.041691 130 22.08 5 - was risk listed (14 Jan.)
2006 XY 2007-02-25 0.006953 54 23.99 19 - past obs. (6 Jan.)
2006 YH14 2007-03-12 0.091097 75 23.26 18 - (14 Jan.)
2004 BK11 2007-03-20 0.279416 106 22.52 29 - faint recov. poss. (3 Dec.)
2006 UQ17 2007-04-01 0.022315 139 21.93 107 - was risk listed (14 Jan.)
2006 YD12 2007-04-18 0.044382 102 22.61 7 - past obs. (30 Dec.)
Viewing by designation order - see also Viewing by date order
Object View until MOID AU Dia H Arc Notes (calc date)
---------- ---------- -------- --- ----- --- - -----------------------
2007 AU2 2007-01-19 0.012071 51 24.12 2 - (12 Jan.)
2007 AS2 2007-02-24 0.041691 130 22.08 5 - was risk listed (14 Jan.)
2007 AA2 2007-02-04 0.010256 40 24.65 3 - was risk listed (12 Jan.)
2006 YP44 2007-02-02 0.001433 62 23.67 9 - was risk listed, past obs. (7 Jan.)
2006 YH14 2007-03-12 0.091097 75 23.26 18 - (14 Jan.)
2006 YD12 2007-04-18 0.044382 102 22.61 7 - past obs. (30 Dec.)
2006 YJ2 2007-02-19 0.092302 125 22.17 18 - (9 Jan.)
2006 YP 2007-01-15 0.025811 63 23.66 23 - (12 Jan.)
2006 YA 2007-01-29 0.048686 82 23.07 19 - past obs. (6 Jan.)
2006 XP4 2007-02-14 0.004109 56 23.91 29 - risk listed (14 Jan.)
2006 XO4 2007-01-27 0.027667 72 23.36 25 - (12 Jan.)
2006 XY2 2007-02-18 0.182560 104 22.56 28 - (11 Jan.)
2006 XY 2007-02-25 0.006953 54 23.99 19 - past obs. (6 Jan.)
2006 XX 2007-01-19 0.080236 68 23.50 30 - (10 Jan.)
2006 UQ17 2007-04-01 0.022315 139 21.93 107 - was risk listed (14 Jan.)
2006 AM4 2007-02-03 0.011027 140 21.92 2op - was risk listed, "only 1 night", radar target (11 Jan.)
2005 CN 2007-01-27 0.029212 85 23.01 3op - (8 Jan.)
2004 BK11 2007-03-20 0.279416 106 22.52 29 - faint recov. poss. (3 Dec.)
2003 WP25 2007-02-07 0.023419 45 24.38 3op - (9 Dec.)
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 |
|---|
| 2005 CN | 691 |
| 2006 AM4 | 291, G96 |
| 2006 UQ17 | 379, 704, 726, A24, G72, H45 |
| 2006 XN4 | 696 |
| 2006 XO4 | 696, 715 |
| 2006 XP4 | 176, 696, H36 |
| 2006 XW | 696 |
| 2006 XW4 | 696 |
| 2006 XX | 696, G96 |
| 2006 XY2 | 291 |
| 2006 XZ2 | 696 |
| 2006 YB | 696 |
| 2006 YH2 | 691 |
| 2006 YH14 | 540, G96 |
| 2006 YJ2 | 673, G96, H36 |
| 2006 YM | 696 |
| 2006 YP | 696, G96 |
| 2007 AA2 | 703, G96, J95 |
| 2007 AS2 | 143, 240, 704, J95 |
| 2007 AU2 | 703, J95 |
|
| Code | Observatory | Objects Observed |
|---|
| 143 | Gnosca Obs. | 2007 AS2 |
| 176 | Consell Obs. | 2006 XP4 |
| 240 | Herrenberg Obs. | 2007 AS2 |
| 291 | Spacewatch 1.8m telescope | 2006 AM4, 2006 XY2 |
| 379 | Hamamatsu-Yuto Obs. | 2006 UQ17 |
| 540 | Linz Obs. | 2006 YH14 |
| 6735 | Table Mtn. Obs. - Jim Young | 2006 YJ2 |
| 691 | Spacewatch 0.9m telescope | 2005 CN, 2006 YH2 |
| 6967 | Whipple Obs. - Tim Spahr | 2006 XN4, 2006 XO4, 2006 XP4, 2006 XW, 2006 XW4, 2006 XX, 2006 XZ2, 2006 YB, 2006 YM, 2006 YP |
| 703 | Catalina Sky Survey | 2007 AA2, 2007 AU2 |
| 704 | LINEAR | 2006 UQ17, 2007 AS2 |
| 715 | Jornada Obs. | 2006 XO4 |
| 726 | Brainerd Obs. | 2006 UQ17 |
| A24 | New Millennium Obs. | 2006 UQ17 |
| G72 | University Hills Obs. | 2006 UQ17 |
| G96 | Mt. Lemmon Survey | 2006 AM4, 2006 XX, 2006 YH14, 2006 YJ2, 2006 YP, 2007 AA2 |
| H36 | Sandlot Obs. | 2006 XP4, 2006 YJ2 |
| H45 | Petit Jean Mtn. South Obs. | 2006 UQ17 |
| J95 | Great Shefford Obs. | 2007 AA2, 2007 AS2, 2007 AU2 |
|
[ object listings |
index |
48 Hours |
viewing |
top ]
http://www.HohmannTransfer.com/h22/wk070114.htm
Publisher information, privacy statement, and disclaimer.
Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com>.
This page is © Copyright 2007 Columbine, Inc. - All Rights Reserved
Do NOT copy or mirror this page, but please do link to it. All information here is subject to very frequent change.
Individuals may make "snapshot" copies for their own private non-commercial use.
Updates for this page are flagged by A/CC's RSS news feed (link)