This week the Max Planck Institute for Solar System Research (MPS) reported that, by combining Earth-based observations with March observation from the Rosetta spacecraft from "well beyond the orbit of Mars," they "could pinpoint the date of the [P/2010 A2 (LINEAR)] collision to a window of ten days around February 10th, 2009." See more info yesterday. Credit: ESA and MPS OSIRIS camera team.
Contents on 15 October '10
- IAU Minor Planet Center
- NEOCP Activity -- five listings: 1 new, 4 updated
- New MPECs -- six MPECs
- Observers -- 25 observing facilities
- Impact Risk Monitoring -- seven objects
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
Of 347 risk-listed objects, 36 have had news in the last 31 days. Updated at 2349 UTC 14 Oct. - Earth's Busy Neighborhood Traffic Report
Seven objects are known to be within ten LD of Earth today. Updated at 2047 UTC 14 Oct. - 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.
NEOCP Activity on 15 October '10
The MPC's NEO Confirmation Page has 5 listings: 1 new, 4 updated
When last checked at 2346 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had one new and four updated listings. Of these, two were "one nighters." So far The Tracking News has counted a total of twelve listings on the NEOCP at some point today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.
New MPECs on 15 October '10
Minor Planet Electronic Circulars
As of last check at 2346 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-T118 time-stamped "02:27 UT" - 2010 TS149 - see below
- MPEC 2010-T119 time-stamped "06:10 UT" - Daily Orbit Update - see below
- MPEC 2010-T120 time-stamped "16:12 UT" - 2010 TU149 - see below
- MPEC 2010-T121 time-stamped "17:40 UT" - 2010 TV149 - see below
- MPEC 2010-T122 time-stamped "18:01 UT" - 2010 TW149 - see below
- MPEC 2010-T123 time-stamped "18:10 UT" - 2010 TX149
MPEC 2010-T123 - "18:10 UT" - 2010 TX149
- K10TE9X 2010 TX149 (small asteroid, H=22.7 ~98m) was discovered at 0649 UT on 14 Oct. by the Catalina Sky Survey (CSS), which observed it at Oct. 14.28-31p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (Oct. 14.36-38p4 & 15.22-25p4) and Astronomical Research Obs. Westfield (Oct. 15.21-22p3).
MPEC 2010-T122 - "18:01 UT" - 2010 TW149
- K10TE9W 2010 TW149 (risk-listed, Earth MOID=1.7 LD, H=25.9 ~22m) was discovered at 0624 UT on 14 Oct. by the Spacewatch 0.9m telescope, which observed it at Oct. 14.27-30p3. The discovery was confirmed by MRO (Oct. 14.40-42p4 & 15.17-20p4), ESA Optical Ground Station (ESA OGS) (Oct. 14.99-00p3), ARO Westfield (Oct. 15.24-25p3), and Sandlot Obs. (Oct. 15.29-31p3).
MPEC 2010-T121 - "17:40 UT" - 2010 TV149
- K10TE9V 2010 TV149 (H=18.6 ~645m) was discovered at 2152 UT on 13 Oct. by La Sagra Obs., which observed it at Oct. 13.91-98p4 and 15.01-02p3. The discovery was confirmed by Doc Greiner Research Obs. (DGRO) (Oct. 14.19p3), LINEAR (Oct. 14.29-34p5), ARO Westfield (Oct. 14.29-31p3), Sandlot Obs. (Oct. 14.31-32p3), CSS (Oct. 14.33-35p3), Tzec Maun Obs. Mayhill (Oct. 15.26-28p5), Kanab Obs. (Oct. 15.30p1 & 15.35p1), and MRO (Oct. 15.33-36p4).
MPEC 2010-T120 - "16:12 UT" - 2010 TU149
- K10TE9U 2010 TU149 (risk-listed, q=0.374 AU, Q=4.354 AU, Earth MOID=4.6 LD, H=20.3 ~295m) was discovered at 0904 UT on 13 Oct. by LINEAR, which observed it at Oct. 13.38-41p3 and 14.36-41p4. The discovery was confirmed by DGRO (Oct. 14.22-24p3), Sandlot Obs. (Oct. 14.37-39p3), ARO Westfield (Oct. 14.43-44p4), ESA OGS (Oct. 15.17-18p3), and MRO (Oct. 15.35-37p4).
<< DOU on 15 Oct. '10 >> MPEC 2010-T119 - "06:10 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K10T55N 2010 TN55 (small asteroid, Q=4.017 AU, arc=1 day, H=27.0 ~13m) from MRO (Oct. 14.34-37p4)
- K10T55L 2010 TL55 (arc=3 days, H=19.0 ~537m) from MRO (Oct. 14.44-46p4)
- K10T54W 2010 TW54 (small asteroid, arc=3 days, H=27.6 ~10m) from ARO Westfield (Oct. 14.31-33p3)
- K10T54K 2010 TK54 (arc=6 days, H=19.0 ~537m) from MRO (Oct. 14.35-37p4 at R=22.0-22.5)
- Observations of recently (no longer) risk-listed objects
- K10T19G 2010 TG19 (small asteroid, arc=8 days, H=23.9 ~56m) from ARO Westfield (Oct. 14.17-18p3), LINEAR (Oct. 14.22-28p5), and GiaGa Obs. (Oct. 14.86p1 & 14.91p1)
- K00T28U 2000 TU28 (arc=2 opp, H=20.7 ~245m) from LINEAR (Oct. 14.36-41p5)
- Observations of small asteroids (H>22.0)
- K10T55O 2010 TO55 (arc=1 day, H=26.5 ~17m) from Klet Obs. (Oct. 13.94-95p2)
- K10T55E 2010 TE55 (arc=2 days, H=28.2 ~8m) from LINEAR (Oct. 14.29-33p4) and Richard Miles via Faulkes Telescope North (Oct. 14.54-58p22)
- K10T54H 2010 TH54 (arc=5 days, H=23.9 ~56m) from ARO Westfield (Oct. 14.37-38p3)
- K10T54G 2010 TG54 (arc=5 days, H=26.6 ~16m) from Sormano Obs. (Oct. 12.83p3) and ARO Westfield (Oct. 14.24-25p3)
- K10S15K 2010 SK15 (arc=14 days, H=22.8 ~93m) from ARO Westfield (Oct. 3.30-31p5)
- K10RD0B 2010 RB130 (arc=27 days, H=24.2 ~49m) from Pan-STARRS 1 (PS1) (Oct. 12.51-52p2)
- K10R80T 2010 RT80 (arc=33 days, H=23.0 ~85m) from Chabot Obs. (Oct. 14.25-27p3)
- K10P57D 2010 PD57 (arc=65 days, H=22.6 ~102m) from the Spacewatch 1.8m telescope (Oct. 14.33-34p2)
- K10L68L 2010 LL68 (arc=124 days, H=22.7 ~98m) from Spacewatch 1.8m (Oct. 14.30-31p2 at V=22.1)
- K05T45E 2005 TE45 (arc=2 opp, H=23.3 ~74m) from the Mt. Lemmon Survey (MLS) (Oct. 14.36-37p3)
- Observations of other objects
- K10T55R 2010 TR55 (Q=4.010 AU, arc=2 days, H=18.6 ~645m) from LINEAR (Oct. 14.43-48p5)
- K10T55C 2010 TC55 (Q=4.539 AU, arc=3 days, H=20.0 ~339m) from ARO Westfield (Oct. 14.22-24p4), LINEAR (Oct. 14.22-27p5), and Wildberg Obs. (Oct. 14.80-81p3)
- K10T54X 2010 TX54 (arc=3 days, H=20.9 ~224m) from Sormano Obs. (Oct. 12.89p2) and ARO Westfield (Oct. 14.13p3)
- K10T54U 2010 TU54 (arc=4 days, H=21.4 ~178m) from ARO Westfield (Oct. 14.38-40p4)
- K10T54N 2010 TN54 (arc=5 days, H=19.1 ~513m) from ARO Westfield (Oct. 14.34-35p3)
- K10T54J 2010 TJ54 (arc=5 days, H=19.7 ~389m) from ARO Westfield (Oct. 14.35-37p3)
- K10T54F 2010 TF54 (Q=5.365 AU, arc=5 days, H=19.7 ~389m) from ARO Westfield (Oct. 14.14-15p3)
- K10T54C 2010 TC54 (Q=4.351 AU, arc=5 days, H=20.9 ~224m) from ARO Westfield (Oct. 14.15-16p4) and DGRO (Oct. 14.15-16p3)
- K10T19H 2010 TH19 (arc=7 days, H=20.3 ~295m) from Chabot Obs. (Oct. 14.16-18p3)
- K10T07J 2010 TJ7 (arc=9 days, H=19.6 ~407m) from CSS (Oct. 14.25-27p4)
- K10T03M 2010 TM3 (arc=12 days, H=20.5 ~269m) from LINEAR (Oct. 14.36-42p10)
- K10S13L 2010 SL13 (arc=25 days, H=19.3 ~467m) from Spacewatch 1.8m (Oct. 14.27p3)
- K10S13H 2010 SH13 (arc=17 days, H=21.5 ~170m) from Spacewatch 1.8m (Oct. 14.24-25p3)
- K10S13D 2010 SD13 (Q=4.306 AU, arc=15 days, H=18.8 ~589m) from ARO Westfield (Oct. 3.15p2)
- K10RI0S 2010 RS180 (arc=41 days, H=20.6 ~257m) from Bergen-Enkheim Obs. (Oct. 13.88-92p3) and MLS (Oct. 14.33-35p4)
- K10RD7G 2010 RG137 (arc=41 days, H=21.0 ~214m) from CSS (Oct. 14.23-24p3)
- K10R80N 2010 RN80 (arc=35 days, H=20.1 ~323m) from ARO Westfield (Oct. 3.17p1) and GiaGa Obs. (Oct. 14.85p1 & 14.90p1)
- K10Q02D 2010 QD2 (arc=2 opp, H=17.3 ~1.17 km) from LINEAR (Oct. 14.29-33p4)
- K10P10M 2010 PM10 (arc=69 days, H=19.7 ~389m) from LINEAR (Oct. 14.30-35p5)
- K10P09L 2010 PL9 (arc=70 days, H=20.1 ~323m) from Chabot Obs. (Oct. 14.14-15p3)
- K10P02P 2010 PP2 (arc=72 days, H=21.1 ~204m) from MLS (Oct. 14.20-22p4)
- K10L63Y 2010 LY63 (arc=4 opp, H=17.9 ~891m) from LINEAR (Oct. 14.15-22p10)
- K08CB8Z 2008 CZ118 (arc=3 opp, H=18.4 ~708m) from Spacewatch 0.9m (Oct. 14.26-30p3)
- K07X58T 2007 XT58 (arc=5 opp, H=17.8 ~933m) from MLS (Oct. 14.46-48p4)
- K05Y36Y 2005 YY36 (arc=3 opp, H=19.5 ~426m) from PS1 (Oct. 13.46-49p3)
- K05T15B 2005 TB15 (arc=2 opp, H=19.3 ~467m) from LINEAR (Oct. 14.29-34p5)
- K03U11V 2003 UV11 (q=0.344 AU, arc=4 opp, H=19.3 ~467m) from Cordell-Lorenz Obs. (Oct. 9.33-42p4)
- K02D03Y 2002 DY3 (arc=4 opp, H=18.3 ~741m) from LINEAR (Oct. 14.23-28p5)
- K01W01T 2001 WT1 (arc=5 opp, H=20.0 ~339m) from LINEAR (Oct. 14.36-41p4)
- K01T44X 2001 TX44 (arc=5 opp, H=19.1 ~513m) from LINEAR (Oct. 14.36-41p5) and CSS (Oct. 14.36-38p3)
- K01SR0A 2001 SA270 (i=38.5°, q=0.345 AU, arc=6 opp, H=18.1 ~812m) from Herrenberg Obs. (Oct. 14.74-76p7)
- K00T01J 2000 TJ1 (i=39.5°, arc=3 opp, H=19.6 ~407m) from CSS (Oct. 14.28-30p4)
- K00P27Q 2000 PQ27 (arc=2 opp, H=19.9 ~355m) from Herrenberg Obs. (Oct. 14.79-82p3)
- M8502 228502 2001 TE2 from LINEAR (Oct. 14.22-28p5)
- M6554 226554 2003 WR21 from CSS (Oct. 14.28-30p4)
- L9071 219071 1997 US9 from LINEAR (Oct. 14.36-42p5)
- F3792 153792 2001 VH75 from MLS (Oct. 14.26-29p4 at V=21.6-22.4)
- D7062 137062 1998 WM from LINEAR (Oct. 14.29-34p5)
- D7032 137032 1998 UO1 from LINEAR (Oct. 14.16-21p5)
- 88959 88959 2001 TZ44 from LINEAR (Oct. 14.36-41p5)
- 68278 68278 2001 FC7 from LINEAR (Oct. 14.37-41p4)
- 48603 48603 1995 BC2 from CSS (Oct. 14.43-46p4)
- 12538 12538 1998 OH from ISON-NM Obs. (Oct. 14.21-29p4)
- 04486 4486 Mithra (1987 SB) from Spacewatch 0.9m (Oct. 14.33-36p3)
MPEC 2010-T118 - "02:27 UT" - 2010 TS149
- K10TE9S 2010 TS149 (H=19.8 ~371m) was discovered at 0811 UT on 1 Oct. by MLS, which observed it at Oct. 1.34-36p4 and 1.40p4. The discovery was confirmed by MRO (Oct. 1.38-40p4 & 2.18-21p4), Spacewatch 1.8m (Oct. 2.18-19p2, 3.40-41p3, 13.27p2 & 14.35-36p3), ARO Westfield (Oct. 2.30-33p3), Remanzacco Obs. (Oct. 2.97p2), and Sandlot Obs. (Oct. 3.29-30p3).
Observers on 15 October '10
A total of 25 observing facilities appear in today's MPECs.
| Code | Observer / observatory |
|---|---|
| H21 | Astronomical Research Obs. Westfield in Illinois, 19 in MPECs 2010-T118, 2010-T119, 2010-T120, 2010-T121, 2010-T122 & 2010-T123 -- 2010 TX54, 2010 TX149, 2010 TW54, 2010 TW149, 2010 TV149, 2010 TU54, 2010 TU149, 2010 TS149, 2010 TN54, 2010 TJ54, 2010 TH54, 2010 TG54, 2010 TG19, 2010 TF54, 2010 TC55, 2010 TC54, 2010 SK15, 2010 SD13, 2010 RN80 |
| A74 | Bergen-Enkheim Obs. in Germany, 1 in MPEC 2010-T119 -- 2010 RS180 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 8 in MPECs 2010-T119, 2010-T121 & 2010-T123 -- 2010 TX149, 2010 TV149, 2010 TJ7, 2010 RG137, 2001 TX44, 2000 TJ1, 48603, 226554 |
| G58 | Chabot Obs. in northern California, 3 in MPEC 2010-T119 -- 2010 TH19, 2010 RT80, 2010 PL9 |
| 850 | Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2010-T119 -- 2003 UV11 |
| H26 | Doc Greiner Research Obs. (DGRO) in Wisconsin, 3 in MPECs 2010-T119, 2010-T120 & 2010-T121 -- 2010 TV149, 2010 TU149, 2010 TC54 |
| J04 | ESA Optical Ground Station (ESA OGS) in the Canary Islands, 2 in MPECs 2010-T120 & 2010-T122 -- 2010 TW149, 2010 TU149 |
| F656 | Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2010-T119 -- 2010 TE55 |
| 203 | GiaGa Obs. in Italy, 2 in MPEC 2010-T119 -- 2010 TG19, 2010 RN80 |
| 240 | Herrenberg Obs. in Germany, 2 in MPEC 2010-T119 -- 2001 SA270, 2000 PQ27 |
| H15 | ISON-NM Obs. in New Mexico, 1 in MPEC 2010-T119 -- 12538 |
| 682 | Kanab Obs. in Utah, 1 in MPEC 2010-T121 -- 2010 TV149 |
| 046 | Klet Obs. in the Czech Republic, 1 in MPEC 2010-T119 -- 2010 TO55 |
| 704 | LINEAR in New Mexico, 21 in MPECs 2010-T119, 2010-T120 & 2010-T121 -- 2010 TV149, 2010 TU149, 2010 TR55, 2010 TM3, 2010 TG19, 2010 TE55, 2010 TC55, 2010 QD2, 2010 PM10, 2010 LY63, 2005 TB15, 2002 DY3, 2001 WT1, 2001 TX44, 2000 TU28, 88959, 68278, 228502, 219071, 137062, 137032 |
| J75 | La Sagra Obs. in Spain, 1 in MPEC 2010-T121 -- 2010 TV149 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 8 in MPECs 2010-T118, 2010-T119, 2010-T120, 2010-T121, 2010-T122 & 2010-T123 -- 2010 TX149, 2010 TW149, 2010 TV149, 2010 TU149, 2010 TS149, 2010 TN55, 2010 TL55, 2010 TK54 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-T118 & 2010-T119 -- 2010 TS149, 2010 RS180, 2010 PP2, 2007 XT58, 2005 TE45, 153792 |
| F51 | Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2010-T119 -- 2010 RB130, 2005 YY36 |
| 473 | Remanzacco Obs. in Italy, 1 in MPEC 2010-T118 -- 2010 TS149 |
| H36 | Sandlot Obs. in Kansas, 4 in MPECs 2010-T118, 2010-T120, 2010-T121 & 2010-T122 -- 2010 TW149, 2010 TV149, 2010 TU149, 2010 TS149 |
| 587 | Sormano Obs. in Italy, 2 in MPEC 2010-T119 -- 2010 TX54, 2010 TG54 |
| 691 | Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2010-T119 & 2010-T122 -- 2010 TW149, 2008 CZ118, 4486 |
| 291 | Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2010-T118 & 2010-T119 -- 2010 TS149, 2010 SL13, 2010 SH13, 2010 PD57, 2010 LL68 |
| H10 | Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-T121 -- 2010 TV149 |
| 198 | Wildberg Obs. in Germany, 1 in MPEC 2010-T119 -- 2010 TC55 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 15 October '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 TW149 | JPL Sentry | 2346 | 2058-2108 | 56 | 9.4e-06 | -5.52 | -6.12 | 0 | JPL: "Analysis based on 20 observations spanning 1.0413 days (2010-Oct-14.26727 to 2010-Oct-15.30859)." Diameter approximately 0.023 km. from mean, weighted H=25.9. |
| 2010 TU149 | JPL Sentry | 2346 | 2044-2098 | 6 | 1.6e-07 | -4.17 | -4.44 | 0 | JPL: "Analysis based on 24 observations spanning 1.9923 days (2010-Oct-13.37823 to 2010-Oct-15.37057)." Diameter approximately 0.311 km. from mean, weighted H=20.2. |
| 2010 TP55 | NEODyS | 1224 | 2013-2090 | 85 | 4.89e-08 | -4.06 | -4.31 | 0 | NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2010/10/11.477 to 2010/10/14.463." |
| 2010 TN55 | JPL Sentry | 1224 | 2057-2105 | 40 | 4.1e-06 | -6.17 | -6.83 | 0 | JPL: "Analysis based on 17 observations spanning 1.0916 days (2010-Oct-13.27465 to 2010-Oct-14.36627)." Diameter approximately 0.013 km. from mean, weighted H=27.0. |
| NEODyS | 1224 | 2057-2090 | 19 | 6.44e-06 | -5.92 | -6.17 | 0 | NEODyS: "Based on 17 optical observations (of which 0 are rejected as outliers) from 2010/10/13.275 to 2010/10/14.367." | |
| 2010 TL55 | NEODyS | 1224 | R E M O V E D | - | |||||
| JPL Sentry | 1224 | R E M O V E D | JPL: Risk listing removed at 0950 UTC. | ||||||
| 2010 TW54 | JPL Sentry | 1224 | 2074-2106 | 11 | 2.2e-05 | -6.27 | -6.31 | 0 | JPL: "Analysis based on 53 observations spanning 2.9806 days (2010-Oct-11.34885 to 2010-Oct-14.32942)." Diameter approximately 0.011 km. from mean, weighted H=27.5. |
| NEODyS | 1224 | 2081-2090 | 5 | 1.15e-06 | -7.46 | -7.49 | 0 | NEODyS: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2010/10/11.350 to 2010/10/14.330." | |
| 2010 TK54 | NEODyS | 1224 | 2057-2077 | 9 | 1.06e-07 | -3.86 | -4.38 | 0 | NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2010/10/08.403 to 2010/10/14.375." |
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 15 October '10
Times are UTC for when items were noted or added by The Tracking News.
| 2346 | Noted that JPL Sentry has posted 2010 TU149 as an impact risk - see above Noted that JPL Sentry has posted 2010 TW149 as an impact risk - see above Grabbed MPEC 2010-T120 - 2010 TU149 - see above Grabbed MPEC 2010-T121 - 2010 TV149 - see above Grabbed MPEC 2010-T122 - 2010 TW149 - see above Grabbed MPEC 2010-T123 - 2010 TX149 - see above |
| 1224 | Noted that NEODyS has updated its 2010 TK54 risk assessment - see above Noted that JPL Sentry has removed 2010 TL55 as an impact risk - see above Noted that NEODyS has removed 2010 TL55 as an impact risk - see above Noted that JPL Sentry has updated its 2010 TN55 risk assessment - see above Noted that NEODyS has updated its 2010 TN55 risk assessment - see above Noted that NEODyS has posted 2010 TP55 as an impact risk - see above Noted that JPL Sentry has updated its 2010 TW54 risk assessment - see above Noted that NEODyS has updated its 2010 TW54 risk assessment - see above Grabbed MPEC 2010-T119 - Daily Orbit Update - see above |
| 0417 | Grabbed MPEC 2010-T118 - 2010 TS149 - see above |
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