As planned, today is the first day that the A/CC news pages have updated since late Sunday, September 26th. All interim MPECs with observation credits now appear on their own respective daily news pages. Data posted here today for radar astrometry was probably first available sometime on September 28th or very early on the 29th UTC, and JPL's first risk ratings for 2010 SG13 and 2010 SK13 were likely posted by JPL late yesterday. Except for a break in NEOCP continuity, and unless risk-rated objects were both posted and removed during the three-plus days, no other data collection was affected by this down time in A/CC's reporting.
Contents on 30 September '10
- Radar Astrometry -- one object
- IAU Minor Planet Center
- NEOCP Activity -- seven listings: 2 new, 5 updated
- New MPECs -- ten MPECs
- Observers -- 23 observing facilities
- Impact Risk Monitoring -- six objects
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
Of 339 risk-listed objects, 29 have had news in the last 30 days. Updated at 1906 UTC 30 Sept. - Earth's Busy Neighborhood Traffic Report
Two objects are known to be within ten LD of Earth today. Updated at 2214 UTC 30 Sept. - Ephemerides for risk-rated and nearby objects
- News image catalog
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
The latest A/CC news is available via framed access, 
RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.
Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.
Radar Astrometry on 30 September '10
Radar observation of one object
The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:
Data update noted at 0135 UTC when the database was dated 28 Sept.
- 154029 2002 CY46 from Arecibo (Sept. 1.34 velocity)
NEOCP Activity on 30 September '10
The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, six were "one nighters." So far The Tracking News has counted a total of seventeen listings on the NEOCP at some point today.
New MPECs on 30 September '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been ten MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-S63 time-stamped "06:06 UT" - Daily Orbit Update - see below
- MPEC 2010-S64 time-stamped "14:25 UT" - 2010 SF15 - see below
- MPEC 2010-S65 time-stamped "14:29 UT" - 2010 SG15 - see below
- MPEC 2010-S66 time-stamped "14:32 UT" - 2010 SH15 - see below
- MPEC 2010-S67 time-stamped "14:35 UT" - 2010 SJ15 - see below
- MPEC 2010-S68 time-stamped "14:39 UT" - 2010 SK15 - see below
- MPEC 2010-S69 time-stamped "14:46 UT" - 2010 SL15 - see below
- MPEC 2010-S70 time-stamped "16:30 UT" - 2010 SU15 - see below
- MPEC 2010-S71 time-stamped "16:33 UT" - 2010 SV15 - see below
- MPEC 2010-S72 time-stamped "19:12 UT" - 2010 SO16
MPEC 2010-S72 - "19:12 UT" - 2010 SO16
- K10S16O 2010 SO16 (H=20.9 ~224m) was discovered at 0516 UT on 17 Sept. by WISE, which observed it at Sept. 17.22p1, 17.29p1, 17.35p1, 17.42p1, 17.62p1, 17.75p1, 17.81p1, 17.88p1, 17.95p1, 18.08p1, 18.15p1, 18.28p1, 18.34p1, 18.41p2, and 18.54p1. The discovery was confirmed by the Siding Spring Survey (SSS) (Sept. 26.41-42p3) and Faulkes Telescope South (Sept. 30.46-47p2).
MPEC 2010-S71 - "16:33 UT" - 2010 SV15
- K10S15V 2010 SV15 (small asteroid, H=26.7 ~15m) was discovered at 0641 UT on 30 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 30.28-30p4 at V=20.4-9 and 30.35-38p7 at V=21.0-22.2.
MPEC 2010-S70 - "16:30 UT" - 2010 SU15
- K10S15U 2010 SU15 (risk-listed, Q=5.344 AU, H=25.7 ~25m) was discovered at 0601 UT on 30 Sept. by MLS, which observed it at Sept. 30.25-27p4 and 30.35-38p8.
MPEC 2010-S69 - "14:46 UT" - 2010 SL15
- K10S15L 2010 SL15 (small asteroid, Q=4.339 AU, H=24.8 ~37m) was discovered at 0911 UT on 29 Sept. by MLS, which observed it at Sept. 29.38-47p7 at V=21.0-22.1 and 30.37p4 at V=20.5-21.5.
MPEC 2010-S68 - "14:39 UT" - 2010 SK15
- K10S15K 2010 SK15 (small asteroid, H=22.4 ~112m) was discovered at 0723 UT on 29 Sept. by LINEAR, which observed it at Sept. 29.31-36p5. The discovery was confirmed by Astronomical Research Obs. Westfield (Sept. 30.27p4), Tzec Maun Obs. Mayhill (Sept. 30.28-37p7), and MLS (Sept. 30.34p4).
MPEC 2010-S67 - "14:35 UT" - 2010 SJ15
- K10S15J 2010 SJ15 (risk-listed, H=22.7 ~98m) was discovered at 0711 UT on 29 Sept. by MLS, which observed it at Sept. 29.30-32p4 at V=21.1-4, 29.36-41p7 at V=20.7-22.2, and 30.36-37p4 at V=21.2-8.
MPEC 2010-S66 - "14:32 UT" - 2010 SH15
- K10S15H 2010 SH15 (risk-listed, H=22.4 ~112m) was discovered at 0628 UT on 29 Sept. by MLS, which observed it at Sept. 29.27-29p4, 29.37p2, and 30.24p3. The discovery was confirmed by Sandlot Obs. (Sept. 30.20-23p2).
MPEC 2010-S65 - "14:29 UT" - 2010 SG15
- K10S15G 2010 SG15 (small asteroid, H=24.8 ~37m) was discovered at 0625 UT on 29 Sept. by MLS, which observed it at Sept. 29.27-32p8 at V=20.5-21.8, 29.37p3 at V=21.1-22.2, and 30.24p4 at V=20.5-21.5. The discovery was confirmed by ARO Westfield (Sept. 30.18-20p3).
MPEC 2010-S64 - "14:25 UT" - 2010 SF15
- K10S15F 2010 SF15 (risk-listed, H=21.2 ~195m) was discovered at 0430 UT on 29 Sept. by MLS, which observed it at Sept. 29.19-25p10 and 30.18p4. The discovery was confirmed by ARO Westfield (Sept. 30.17-20p3).
<< DOU on 30 Sept. '10 >> MPEC 2010-S63 - "06:06 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K10S13K 2010 SK13 (small asteroid, Q=4.114 AU, arc=2 days, H=27.4 ~11m) from the Spacewatch 1.8m telescope (Sept. 29.36-37p3) and Great Shefford Obs. (Sept. 29.84p3)
- K10S13G 2010 SG13 (q=0.367 AU, arc=2 days, H=18.5 ~676m) from Remanzacco Obs. (Sept. 28.85p2)
- Observations of recently (no longer) risk-listed objects
- K10RD0C 2010 RC130 (arc=15 days, H=21.7 ~155m) from Great Shefford Obs. (Sept. 25.88-91p3), Desert Moon Obs. (Sept. 29.16-17p5), Peschiera del Garda Obs. (Sept. 29.83-84p4), and Verona Obs. (Sept. 29.85p4)
- F3814 153814 2001 WN5 from Desert Moon Obs. (Sept. 29.07-08p4)
- Observations of small asteroids (H>22.0)
- K10S11X 2010 SX11 (arc=12 days, H=25.0 ~34m) from MLS (Sept. 29.39-40p3), Kevin Hills via RAS Obs. Moorook (Sept. 29.59-60p3), and Libbiano Obs. (Sept. 29.91-92p3)
- K10S00J 2010 SJ (arc=13 days, H=23.6 ~65m) from Desert Moon Obs. (Sept. 29.29-30p3)
- K10S00C 2010 SC (arc=13 days, H=26.0 ~21m) from Sandlot Obs. (Sept. 29.42-43p3)
- K10R64J 2010 RJ64 (arc=8 days, H=24.1 ~51m) from Pan-STARRS 1 (PS1) (Sept. 18.55-56p3)
- K10R43L 2010 RL43 (arc=23 days, H=24.3 ~47m) from ARO Westfield (Sept. 29.19-22p3)
- K10R04J 2010 RJ4 (arc=26 days, H=23.9 ~56m) from ARO Westfield (Sept. 29.21-22p3)
- K10P66S 2010 PS66 (arc=45 days, H=25.1 ~32m) from ARO Westfield (Sept. 29.24-27p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K10S13H 2010 SH13 (arc=2 days, H=21.8 ~148m) from Remanzacco Obs. (Sept. 28.83p2) and Spacewatch 1.8m (Sept. 29.37-38p3)
- K10O00B 2010 OB (Q=4.387 AU, arc=73 days, H=21.9 ~141m) from ARO Westfield (Sept. 29.12-16p3 at V=21.8-22.1)
- Observations of other objects
- K10S13L 2010 SL13 (arc=10 days, H=19.3 ~467m) from Remanzacco Obs. (Sept. 28.87p2)
- K10S13D 2010 SD13 (Q=4.341 AU, arc=2 days, H=18.6 ~645m) from LINEAR (Sept. 29.10-16p5)
- K10S12A 2010 SA12 (arc=11 days, H=21.0 ~214m) from ARO Westfield (Sept. 29.35-37p4) and Sandlot Obs. (Sept. 29.44-45p3)
- K10RD7G 2010 RG137 (arc=26 days, H=21.1 ~204m) from Desert Moon Obs. (Sept. 29.18-19p4)
- K10R82O 2010 RO82 (Q=4.037 AU, arc=19 days, H=16.9 ~1.41 km) from SSS (Sept. 29.49p1)
- K10R80P 2010 RP80 (Q=4.721 AU, arc=20 days, H=20.7 ~245m) from La Sagra Obs. (Sept. 28.88-90p3) and Peschiera del Garda Obs. (Sept. 29.87-90p3)
- K10R80N 2010 RN80 (arc=20 days, H=20.2 ~309m) from Verona Obs. (Sept. 29.85-86p4)
- K10R64K 2010 RK64 (arc=19 days, H=20.7 ~245m) from ARO Westfield (Sept. 29.05-07p3), Desert Moon Obs. (Sept. 29.12-14p3), and SSS (Sept. 29.44p2)
- K10R42M 2010 RM42 (i=39.0°, arc=24 days, H=18.5 ~676m) from ARO Westfield (Sept. 29.26-28p4)
- K10R12C 2010 RC12 (arc=26 days, H=21.7 ~155m) from Desert Moon Obs. (Sept. 29.22-27p3)
- K10Q02D 2010 QD2 (arc=2 opp, H=17.5 ~1.07 km) from Desert Moon Obs. (Sept. 29.46-50p4)
- K10OC7C 2010 OC127 (arc=60 days, H=19.2 ~490m) from Faulkes South (Sept. 29.38p3) and SSS (Sept. 29.39p1)
- K10OA1D 2010 OD101 (arc=68 days, H=20.9 ~224m) from ARO Westfield (Sept. 29.23-26p3)
- K10OA1B 2010 OB101 (arc=73 days, H=20.5 ~269m) from Spacewatch 1.8m (Sept. 29.39-40p2)
- K10O01Q 2010 OQ1 (arc=70 days, H=18.9 ~562m) from SSS (Sept. 29.77p1)
- K10NB7W 2010 NW117 (arc=83 days, H=18.0 ~851m) from Desert Moon Obs. (Sept. 29.09-11p3)
- K10M87R 2010 MR87 (arc=100 days, H=19.5 ~426m) from Castelmartini Obs. (Sept. 29.77p3) and Verona Obs. (Sept. 29.83p4)
- K10M01F 2010 MF1 (arc=103 days, H=19.7 ~389m) from Castelmartini Obs. (Sept. 29.78p3)
- K10L63Y 2010 LY63 (arc=4 opp, H=17.8 ~933m) from Peschiera del Garda Obs. (Sept. 29.80-81p5), Verona Obs. (Sept. 29.89p4), and Siegen Obs. (Sept. 29.89-90p4)
- K10K39Y 2010 KY39 (arc=134 days, H=20.5 ~269m) from La Sagra Obs. (Sept. 28.92-95p3)
- K07T18Y 2007 TY18 (arc=3 opp, H=18.3 ~741m) from the Catalina Sky Survey (CSS) (Sept. 29.30-32p4)
- K07R17V 2007 RV17 (arc=3 opp, H=18.9 ~562m) from LINEAR (Sept. 29.23-29p4)
- K03T07X 2003 TX7 (i=38.7°, arc=4 opp, H=19.3 ~467m) from Desert Moon Obs. (Sept. 29.40-44p5)
- K00T01J 2000 TJ1 (i=39.5°, arc=3 opp, H=19.2 ~490m) from Peschiera del Garda Obs. (Sept. 29.92-94p3)
- J98F09N 1998 FN9 (arc=5 opp, H=20.7 ~245m) from MLS (Sept. 29.34-35p3)
- N0118 230118 2001 DB3 from MLS (Sept. 29.19-21p4)
- G2913 162913 2001 MT18 from MLS (Sept. 29.38-40p4)
- F4029 154029 2002 CY46 from Castelmartini Obs. (Sept. 29.78-79p3)
- F2952 152952 2000 GC2 from Peschiera del Garda Obs. (Sept. 20.90-92p3)
- E3381 143381 2003 BC21 from Linceo Obs. (Sept. 28.87-88p3)
- 66008 66008 1998 QH2 from LINEAR (Sept. 29.30-35p4)
- 65717 65717 1993 BX3 from MLS (Sept. 29.19-21p4)
- 29075 29075 1950 DA from CSS (Sept. 29.26-28p4)
- 19764 19764 2000 NF5 from La Sagra Obs. (Sept. 28.84-87p3) and CSS (Sept. 29.26-28p4)
- 07336 7336 Saunders (1989 RS1) from Linceo Obs. (Sept. 28.91-93p3)
- 05011 5011 Ptah (6743 P-L) from LINEAR (Sept. 29.16-22p5)
- 04486 4486 Mithra (1987 SB) from La Sagra Obs. (Sept. 29.07-10p3)
- 02212 2212 Hephaistos (1978 SB) from La Sagra Obs. (Sept. 29.07-09p3)
Observers on 30 September '10
A total of 23 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| 251 | Arecibo in Puerto Rico, 1 in radar -- 154029 |
| H21 | Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2010-S63, 2010-S64, 2010-S65 & 2010-S68 -- 2010 SK15, 2010 SG15, 2010 SF15, 2010 SA12, 2010 RM42, 2010 RL43, 2010 RK64, 2010 RJ4, 2010 PS66, 2010 OD101, 2010 OB |
| 160 | Castelmartini Obs. in Italy, 3 in MPEC 2010-S63 -- 2010 MR87, 2010 MF1, 154029 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2010-S63 -- 2007 TY18, 29075, 19764 |
| 448 | Desert Moon Obs. in New Mexico, 9 in MPEC 2010-S63 -- 2010 SJ, 2010 RK64, 2010 RG137, 2010 RC130, 2010 RC12, 2010 QD2, 2010 NW117, 2003 TX7, 153814 |
| E10 | Faulkes Telescope South in New South Wales, 2 in MPECs 2010-S63 & 2010-S72 -- 2010 SO16, 2010 OC127 |
| J95 | Great Shefford Obs. in England, 2 in MPEC 2010-S63 -- 2010 SK13, 2010 RC130 |
| 704 | LINEAR in New Mexico, 5 in MPECs 2010-S63 & 2010-S68 -- 2010 SK15, 2010 SD13, 2007 RV17, 66008, 5011 |
| J75 | La Sagra Obs. in Spain, 5 in MPEC 2010-S63 -- 2010 RP80, 2010 KY39, 19764, 4486, 2212 |
| B33 | Libbiano Obs. in Italy, 1 in MPEC 2010-S63 -- 2010 SX11 |
| J59 | Linceo Obs. in Spain, 2 in MPEC 2010-S63 -- 143381, 7336 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2010-S63, 2010-S64, 2010-S65, 2010-S66, 2010-S67, 2010-S68, 2010-S69, 2010-S70 & 2010-S71 -- 2010 SX11, 2010 SV15, 2010 SU15, 2010 SL15, 2010 SK15, 2010 SJ15, 2010 SH15, 2010 SG15, 2010 SF15, 1998 FN9, 65717, 230118, 162913 |
| F51 | Pan-STARRS 1 in Hawaii, 1 in MPEC 2010-S63 -- 2010 RJ64 |
| A53 | Peschiera del Garda Obs. in Italy, 5 in MPEC 2010-S63 -- 2010 RP80, 2010 RC130, 2010 LY63, 2000 TJ1, 152952 |
| D90` | Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2010-S63 -- 2010 SX11 |
| 473 | Remanzacco Obs. in Italy, 3 in MPEC 2010-S63 -- 2010 SL13, 2010 SH13, 2010 SG13 |
| H36 | Sandlot Obs. in Kansas, 3 in MPECs 2010-S63 & 2010-S66 -- 2010 SH15, 2010 SC, 2010 SA12 |
| E12 | Siding Spring Survey (SSS) in New South Wales, 5 in MPECs 2010-S63 & 2010-S72 -- 2010 SO16, 2010 RO82, 2010 RK64, 2010 OQ1, 2010 OC127 |
| 510 | Siegen Obs. in Germany, 1 in MPEC 2010-S63 -- 2010 LY63 |
| 291 | Spacewatch 1.8m telescope in Arizona, 3 in MPEC 2010-S63 -- 2010 SK13, 2010 SH13, 2010 OB101 |
| H10 | Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-S68 -- 2010 SK15 |
| A48 | Verona Obs. in Italy, 4 in MPEC 2010-S63 -- 2010 RN80, 2010 RC130, 2010 MR87, 2010 LY63 |
| C51 | WISE in Earth polar orbit, 1 in MPEC 2010-S72 -- 2010 SO16 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 30 September '10
| 0000NNN000 Object | Risk Monitor | When Noted UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Today's Latest Risk Assessments |
| 2010 SU15 | JPL Sentry | 1906 | 2013-2109 | 62 | 3.6e-08 | -8.60 | -9.30 | 0 | JPL: "Analysis based on 12 observations spanning .13293 days (2010-Sep-30.25135 to 2010-Sep-30.38428)." Diameter approximately 0.012 km. from mean, weighted H=27.5. |
| 2010 SJ15 | JPL Sentry | 1744 | 2014-2039 | 11 | 2.1e-09 | -5.91 | -6.14 | 0 | JPL: "Analysis based on 15 observations spanning 1.0654 days (2010-Sep-29.29976 to 2010-Sep-30.36515)." Diameter approximately 0.133 km. from mean, weighted H=22.0. |
| 2010 SH15 | JPL Sentry | 1744 | 2014-2108 | 58 | 1.4e-07 | -4.90 | -5.06 | 0 | JPL: "Analysis based on 11 observations spanning .97413 days (2010-Sep-29.26958 to 2010-Sep-30.24371)." Diameter approximately 0.121 km. from mean, weighted H=22.3. |
| 2010 SF15 | JPL Sentry | 1744 | 2012-2106 | 37 | 1.1e-08 | -5.23 | -5.32 | 0 | JPL: "Analysis based on 17 observations spanning 1.0088 days (2010-Sep-29.18778 to 2010-Sep-30.196598)." Diameter approximately 0.183 km. from mean, weighted H=21.4. |
| 2010 SK13 | JPL Sentry | 1437 | 2080-2084 | 3 | 1.1e-05 | -6.10 | -6.24 | 0 | JPL #2 for the day: "Analysis based on 22 observations spanning 1.5346 days (2010-Sep-28.30637 to 2010-Sep-29.840957)." Diameter approximately 0.011 km. from mean, weighted H=27.5. |
| NEODyS | 1437 | 2080-2084 | 3 | 1.23e-05 | -6.05 | -6.20 | 0 | NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2010/09/28.307 to 2010/09/29.842." | |
| 2010 SG13 | JPL Sentry | 1437 | 2021-2100 | 36 | 1.7e-08 | -3.63 | -4.35 | 0 | JPL #2 for the day: "Analysis based on 14 observations spanning 2.1205 days (2010-Sep-27.10646 to 2010-Sep-29.22699)." Diameter approximately 0.875 km. from mean, weighted H=17.9. |
| NEODyS | 1437 | 2012-2090 | 119 | 3.22e-08 | -3.13 | -3.94 | 0 | NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/09/27.107 to 2010/09/29.228." | |
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.
Chronology on 30 September '10
Times are UTC for when items were noted or added by The Tracking News.
| 2127 | Grabbed MPEC 2010-S72 - 2010 SO16 - see above |
| 1906 | Noted that JPL Sentry has posted 2010 SU15 as an impact risk - see above |
| 1744 | Noted that JPL Sentry has posted 2010 SF15 as an impact risk - see above Noted that JPL Sentry has posted 2010 SH15 as an impact risk - see above Noted that JPL Sentry has posted 2010 SJ15 as an impact risk - see above Grabbed MPEC 2010-S70 - 2010 SU15 - see above Grabbed MPEC 2010-S71 - 2010 SV15 - see above |
| 1528 | Grabbed MPEC 2010-S67 - 2010 SJ15 - see above Grabbed MPEC 2010-S68 - 2010 SK15 - see above Grabbed MPEC 2010-S69 - 2010 SL15 - see above |
| 1437 | Noted that JPL Sentry has updated its 2010 SG13 risk assessment - see above Noted that NEODyS has posted 2010 SG13 as an impact risk - see above Noted that JPL Sentry has updated its 2010 SK13 risk assessment - see above Noted that NEODyS has posted 2010 SK13 as an impact risk - see above Grabbed MPEC 2010-S63 - Daily Orbit Update - see above Grabbed MPEC 2010-S64 - 2010 SF15 - see above Grabbed MPEC 2010-S65 - 2010 SG15 - see above Grabbed MPEC 2010-S66 - 2010 SH15 - see above |
| 0135 | Noted that JPL Sentry has posted 2010 SG13 as an impact risk - see above Noted that JPL Sentry has posted 2010 SK13 as an impact risk - see above Noted Radar Astrometry database update - see above |
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