Contents on 19 September '10
- IAU Minor Planet Center
- Observers -- fourteen observing facilities
- Impact Risk Monitoring -- two objects
- Consolidated Risk Tables - the CRT page
Of 333 risk-listed objects, 24 have had news in the last 30 days. Updated at 1501 UTC 19 Sept.
- Earth's Busy Neighborhood Traffic Report
Three objects are known to be within ten LD of Earth today. Updated at 2214 UTC 19 Sept.
- Ephemerides for risk-rated and nearby objects
- News image catalog
- Old & new CRT Archive
- Old News Archive & Small Objects Archive
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 19 September '10
The MPC's NEO Confirmation Page has 10 listings: 3 new, 7 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had three new and seven updated listings. Of these, eight were "one nighters." So far The Tracking News has counted a total of 22 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 19 September '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been six MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-S21 time-stamped "01:48 UT" - 2010 SV3 - see below
- MPEC 2010-S22 time-stamped "06:10 UT" - Daily Orbit Update - see below
- MPEC 2010-S23 time-stamped "18:26 UT" - 2010 SW3 - see below
- MPEC 2010-S24 time-stamped "18:29 UT" - 2010 SX3 - see below
- MPEC 2010-S25 time-stamped "18:47 UT" - 2010 SY3 - see below
- MPEC 2010-S26 time-stamped "19:05 UT" - 2010 SZ3
MPEC 2010-S26 - "19:05 UT" - 2010 SZ3
- K10S03Z 2010 SZ3 (small asteroid, Earth MOID=5.3 LD, H=28.3 ~7m) was discovered at 0808 UT on 18 Sept. by the Mt. Lemmon Survey (MLS), which observed it at Sept. 18.34-36p3, 18.41p4, and 19.36-38p3. This object is now within ten lunar distances (LD) of Earth, reaching 5.1 LD on 11 Sept.
MPEC 2010-S25 - "18:47 UT" - 2010 SY3
- K10S03Y 2010 SY3 (small asteroid, H=22.8 ~93m) was discovered at 0943 UT on 16 Sept. by MLS, which observed it at Sept. 16.41-42p4. The discovery was confirmed by the Spacewatch 1.8m telescope (Sept. 18.45-46p3 & 19.17p3).
MPEC 2010-S24 - "18:29 UT" - 2010 SX3
- K10S03X 2010 SX3 (small asteroid, H=24.9 ~35m) was discovered at 0637 UT on 18 Sept. by MLS, which observed it at Sept. 18.28-36p8 and 19.36-38p4. The discovery was confirmed by Astronomical Research Obs. Westfield (Sept. 18.37-38p3) and Spacewatch 1.8m (Sept. 19.38-39p3).
MPEC 2010-S23 - "18:26 UT" - 2010 SW3
- K10S03W 2010 SW3 (small asteroid, Earth MOID=0.2 LD, H=26.6 ~16m) was discovered at 0637 UT on 18 Sept. by MLS, which observed it at Sept. 18.28-36p8 and 19.36-38p4. The discovery was confirmed by ARO Westfield (Sept. 18.34-36p3) and Spacewatch 1.8m (Sept. 19.18-19p3). This object was within ten lunar distances (LD) of Earth, reaching 2.8 LD on 11 Sept.
- Observations of risk-listed objects
- K10R91A 2010 RA91 (small asteroid, arc=6 days, H=23.4 ~71m) from ARO Westfield (Sept. 18.07-09p3), Spacewatch 1.8m (Sept. 18.19-20p3 & 19.13-14p3), and Kachina Obs. (Sept. 18.19-24p3)
- K10R80M 2010 RM80 (small asteroid, arc=8 days, H=27.9 ~9m) from Spacewatch 1.8m (Sept. 18.31-32p3 & 19.19-20p3)
- Observations of recently (no longer) risk-listed objects
- K10S00D 2010 SD (small asteroid, arc=2 days, H=24.7 ~39m) from ARO Westfield (Sept. 18.06-07p4)
- K10RD0D 2010 RD130 (small asteroid, arc=3 days, H=25.4 ~28m) from Spacewatch 1.8m (Sept. 18.35p3)
- K10RD0C 2010 RC130 (arc=3 days, H=21.6 ~162m) from LINEAR (Sept. 18.23-28p5)
- K10R03W 2010 RW3 (small asteroid, arc=16 days, H=23.8 ~59m) from Spacewatch 1.8m (Sept. 18.29-30p3)
- Observations of small asteroids (H>22.0)
- K10S03P 2010 SP3 (arc=1 day, H=24.7 ~39m) from ARO Westfield (Sept. 18.18-19p5) and LINEAR (Sept. 18.36-41p5)
- K10S00J 2010 SJ (arc=3 days, H=23.3 ~74m) from Guidestar Obs. (Sept. 18.00-02p3)
- K10S00F 2010 SF (arc=2 days, H=25.3 ~29m) from LINEAR (Sept. 18.30-35p8)
- K10S00E 2010 SE (arc=3 days, H=24.3 ~47m) from Great Shefford Obs. (Sept. 18.01-03p3 & 18.18-19p3) and Guidestar Obs. (Sept. 19.10-11p3)
- K10R82M 2010 RM82 (arc=6 days, H=25.9 ~22m) from ARO Westfield (Sept. 18.24-26p3) and Desert Moon Obs. (Sept. 18.28-33p3)
- K10R04J 2010 RJ4 (arc=15 days, H=24.0 ~54m) from LINEAR (Sept. 18.36-41p5)
- K10R03T 2010 RT3 (arc=16 days, H=23.5 ~68m) from ARO Westfield (Sept. 18.13-16p3)
- K10R03S 2010 RS3 (arc=16 days, H=22.7 ~98m) from Desert Moon Obs. (Sept. 18.20-22p2)
- K10L68L 2010 LL68 (arc=98 days, H=22.7 ~98m) from MLS (Sept. 18.34-36p4)
- Observations of other objects
- K10RD7G 2010 RG137 (arc=15 days, H=20.9 ~224m) from LINEAR (Sept. 18.29-34p5)
- K10R80N 2010 RN80 (arc=8 days, H=20.3 ~295m) from ARO Westfield (Sept. 18.10-12p5) and Desert Moon Obs. (Sept. 18.17-18p5)
- K10R43K 2010 RK43 (arc=12 days, H=20.6 ~257m) from ARO Westfield (Sept. 18.10-13p5)
- K10R42K 2010 RK42 (Q=4.658 AU, arc=14 days, H=18.6 ~645m) from Guidestar Obs. (Sept. 19.04-06p3)
- K10L63Y 2010 LY63 (arc=4 opp, H=17.7 ~977m) from Hamamatsu-Yuto Obs. (Sept. 18.47-50p5)
- K07T18Y 2007 TY18 (arc=3 opp, H=18.3 ~741m) from ARO Westfield (Sept. 18.24-26p4) and Desert Moon Obs. (Sept. 18.28-33p3)
- K05G59E 2005 GE59 (arc=4 opp, H=18.1 ~812m) from LINEAR (Sept. 18.42-47p5), Vicksburg Obs. (Sept. 18.44-45p3), and Taurus-1 Obs. (Sept. 18.89-91p6)
- K01P09H 2001 PH9 (Q=4.194 AU, arc=2 opp, H=21.2 ~195m) from Desert Moon Obs. (Sept. 18.36-39p3)
- J9145 199145 2005 YY128 from LINEAR (Sept. 18.44-47p3)
- F2952 152952 2000 GC2 from LINEAR (Sept. 18.36-41p5) and Desert Moon Obs. (Sept. 18.41-42p5)
- 85818 85818 1998 XM4 from LINEAR (Sept. 18.11-16p5)
- 07839 7839 1994 ND from Desert Moon Obs. (Sept. 18.44-50p4)
- 04197 4197 1982 TA from LINEAR (Sept. 18.42-47p5) and Vicksburg Obs. (Sept. 18.45-46p3)
MPEC 2010-S21 - "01:48 UT" - 2010 SV3
- K10S03V 2010 SV3 (H=20.5 ~269m) was discovered at 0726 UT on 17 Sept. by the Catalina Sky Survey (CSS), which observed it at Sept. 17.31-33p4 and 17.37-42p8. The discovery was confirmed by ARO Westfield (Sept. 17.38-39p3), Los Campitos Obs. (Sept. 18.19-21p2), Tanti Obs. (Sept. 18.24-25p3), MLS (Sept. 18.33-36p4), LINEAR (Sept. 18.36-41p5), and Guidestar Obs. (Sept. 18.95-97p3).
Observers on 19 September '10
Fourteen observing facilities appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2010-S21, 2010-S22, 2010-S23 & 2010-S24 -- 2010 SX3, 2010 SW3, 2010 SV3, 2010 SP3, 2010 SD, 2010 RT3, 2010 RN80, 2010 RM82, 2010 RK43, 2010 RA91, 2007 TY18|
|703||Catalina Sky Survey in Arizona, 1 in MPEC 2010-S21 -- 2010 SV3|
|448||Desert Moon Obs. in New Mexico, 7 in MPEC 2010-S22 -- 2010 RS3, 2010 RN80, 2010 RM82, 2007 TY18, 2001 PH9, 152952, 7839|
|J95||Great Shefford Obs. in England, 1 in MPEC 2010-S22 -- 2010 SE|
|A17||Guidestar Obs. in Germany, 4 in MPECs 2010-S21 & 2010-S22 -- 2010 SV3, 2010 SJ, 2010 SE, 2010 RK42|
|379||Hamamatsu-Yuto Obs. in Japan, 1 in MPEC 2010-S22 -- 2010 LY63|
|G89||Kachina Obs. in Arizona, 1 in MPEC 2010-S22 -- 2010 RA91|
|704||LINEAR in New Mexico, 11 in MPECs 2010-S21 & 2010-S22 -- 2010 SV3, 2010 SP3, 2010 SF, 2010 RJ4, 2010 RG137, 2010 RC130, 2005 GE59, 85818, 199145, 152952, 4197|
|I36||Los Campitos Obs. in Argentina, 1 in MPEC 2010-S21 -- 2010 SV3|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-S21, 2010-S22, 2010-S23, 2010-S24, 2010-S25 & 2010-S26 -- 2010 SZ3, 2010 SY3, 2010 SX3, 2010 SW3, 2010 SV3, 2010 LL68|
|291||Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2010-S22, 2010-S23, 2010-S24 & 2010-S25 -- 2010 SY3, 2010 SX3, 2010 SW3, 2010 RW3, 2010 RM80, 2010 RD130, 2010 RA91|
|I19||Tanti Obs. in Argentina, 1 in MPEC 2010-S21 -- 2010 SV3|
|A98||Taurus-1 Obs. in Belarus, 1 in MPEC 2010-S22 -- 2005 GE59|
|H47||Vicksburg Obs. in Mississippi, 2 in MPEC 2010-S22 -- 2005 GE59, 4197|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 19 September '10
Notes for Today's Latest Risk Assessments
|2010 RA91||JPL Sentry||1501||R E M O V E D||JPL: Risk listing removed at 0958 UTC.|
|2010 RM80||JPL Sentry||1501||2085-2110||19||1.3e-05||-6.76||-7.24||0||JPL: "Analysis based on 47 observations spanning 7.9169 days (2010-Sep-11.28495 to 2010-Sep-19.20187)." Diameter approximately 0.009 km. from mean, weighted H=27.9.|
|NEODyS||1501||2085||1||3.34e-07||-8.25||-8.25||0||NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2010/09/11.286 to 2010/09/19.203."|
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 19 September '10
Times are UTC for when items were noted or added by The Tracking News.
|1911||Grabbed MPEC 2010-S23 - 2010 SW3 - see above|
Grabbed MPEC 2010-S24 - 2010 SX3 - see above
Grabbed MPEC 2010-S25 - 2010 SY3 - see above
Grabbed MPEC 2010-S26 - 2010 SZ3 - see above
|1501||Noted that JPL Sentry has removed 2010 RA91 as an impact risk - see above|
Noted that JPL Sentry has updated its 2010 RM80 risk assessment - see above
Noted that NEODyS has updated its 2010 RM80 risk assessment - see above
Grabbed MPEC 2010-S22 - Daily Orbit Update - see above
|0348||Grabbed MPEC 2010-S21 - 2010 SV3 - see above|