Contents on 21 May '10
- IAU Minor Planet Center
- Observers -- 22 observing facilities
- Impact Risk Monitoring -- six objects
- Consolidated Risk Tables - the CRT page
Of 322 risk-listed objects, 31 have had news in the last month. Updated at 2359 UTC.
- Earth's Busy Neighborhood Traffic Report
Six objects are known to be within ten LD of Earth today. Updated at 2317 UTC.
- 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 21 May '10
The MPC's NEO Confirmation Page has 6 listings: 5 new, 1 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and one updated listings. Of these, four were "one nighters." So far The Tracking News has counted a total of eighteen 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 21 May '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been nine MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-K32 time-stamped "01:50 UT" - 2010 KA8 - see below
- MPEC 2010-K33 time-stamped "01:54 UT" - 2010 KB8 - see below
- MPEC 2010-K34 time-stamped "06:11 UT" - Daily Orbit Update - see below
- MPEC 2010-K35 time-stamped "20:35 UT" - 2010 HZ108 - see below
- MPEC 2010-K36 time-stamped "20:39 UT" - 2010 JM151 - see below
- MPEC 2010-K37 time-stamped "20:47 UT" - 2010 KO10 - see below
- MPEC 2010-K38 time-stamped "20:51 UT" - 2010 KP10 - see below
- MPEC 2010-K39 time-stamped "20:57 UT" - 2010 KQ10 - see below
- MPEC 2010-K40 time-stamped "21:02 UT" - 2010 KR10
MPEC 2010-K40 - "21:02 UT" - 2010 KR10
- K10K10R 2010 KR10 (Earth MOID=0.6 LD, H=19.4 ~446m) was discovered at 1035 UT on 20 May by the Mt. Lemmon Survey (MLS), which observed it at May 20.44-46p8 and 21.44-46p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (May 21.45-47p4).
MPEC 2010-K39 - "20:57 UT" - 2010 KQ10
- K10K10Q 2010 KQ10 (risk-listed, Q=4.785 AU, Earth MOID=8.5 LD, H=21.1 ~204m) was discovered at 1000 UT on 20 May by MLS, which observed it at May 20.42-45p8 and 21.45p3. The discovery was confirmed by MRO (May 21.40-43p4).
MPEC 2010-K38 - "20:51 UT" - 2010 KP10
- K10K10P 2010 KP10 (small asteroid, H=23.4 ~71m) was discovered at 0759 UT on 20 May by the Spacewatch 0.9m telescope, which observed it at May 20.33-37p3. The discovery was confirmed by Rodeo Obs. (May 20.42p3), Saint-Barthelemy Obs. (May 20.90-94p4), MRO (May 21.26-29p4), Sabino Canyon Obs. (May 21.27-29p3), Tenagra II Obs. (May 21.29p3), and the Spacewatch 1.8m telescope (May 21.34-35p3 & 21.41-42p3).
MPEC 2010-K37 - "20:47 UT" - 2010 KO10
- K10K10O 2010 KO10 (small asteroid, Earth MOID=0.0 LD, H=26.8 ~15m) was discovered at 0744 UT on 20 May by the Catalina Sky Survey (CSS), which observed it at May 20.32-35p4 and 20.41-42p4. The discovery was confirmed by Saint-Barthelemy Obs. (May 20.85-88p3), Sabino Canyon Obs. (May 21.23-24p3), Walnut Creek Obs. (May 21.24-25p4), MRO (May 21.25-28p4 & 21.33-35p4), and Tenagra II Obs. (May 21.26p3). This object is now within ten lunar distances (LD) of Earth, reaching 0.5 LD on 23 May (INTRUDER).
MPEC 2010-K36 - "20:39 UT" - 2010 JM151
- K10JF1M 2010 JM151 (H=20.2 ~309m) was discovered at 0807 UT on 14 May by WISE, which observed it at May 14.34p1, 14.54p1, 14.67p1, 14.74p1, and 14.80p1. The discovery was confirmed by the Siding Spring Survey (SSS) (May 19.36p2 & 21.36-37p2).
MPEC 2010-K35 - "20:35 UT" - 2010 HZ108
- K10HA8Z 2010 HZ108 (H=20.7 ~245m) was discovered at 1643 UT on 25 April by WISE, which observed it at April 25.70p1, 25.83p1, 25.96p1, 26.23p1, 26.29p1, and 26.36p1. The discovery was confirmed by David Tholen's team on Mauna Kea (May 19.25p3) and MRO (May 21.14-20p5 at R=21.7-22.3).
- Observations of risk-listed objects
- K10J88E 2010 JE88 (arc=6 days, H=21.6 ~162m) from Astronomical Research Obs. Westfield (May 20.14-15p3) and Spacewatch 1.8m (May 20.33-34p3)
- K10H20S 2010 HS20 (small asteroid, arc=29 days, H=23.3 ~74m) from Spacewatch 1.8m (May 19.43-44p3)
- Observations of recently (no longer) risk-listed objects
- K10J71N 2010 JN71 (arc=10 days, H=21.5 ~170m) from Lenomiya Obs. (May 21.15-16p4)
- Observations of small asteroids (H>22.0)
- K10K00E 2010 KE (arc=3 days, H=26.7 ~15m) from Tenagra II Obs. (May 19.33-34p3)
- K10J71O 2010 JO71 (arc=9 days, H=23.9 ~56m) from ARO Westfield (May 20.22p3)
- K10J39V 2010 JV39 (arc=10 days, H=23.5 ~68m) from Spacewatch 1.8m (May 20.41-42p2)
- K10J33O 2010 JO33 (arc=11 days, H=25.1 ~32m) from MLS (May 19.42-44p4)
- K10H00A 2010 HA (arc=34 days, H=23.9 ~56m) from Spacewatch 1.8m (May 20.26p3)
- K10G34A 2010 GA34 (arc=39 days, H=22.3 ~117m) from ARO Westfield (May 20.21-23p3) and Walnut Creek Obs. (May 21.22p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K10F81C 2010 FC81 (Q=4.340 AU, arc=51 days, H=21.8 ~148m) from University Hills Obs. (May 20.25-26p5) and Spacewatch 1.8m (May 20.35-36p3)
- Observations of other objects
- K10J88G 2010 JG88 (arc=6 days, H=19.4 ~446m) from ARO Westfield (May 20.16-17p4) and Tenagra II Obs. (May 20.28p2)
- K10J88F 2010 JF88 (arc=6 days, H=18.4 ~708m) from Tenagra II Obs. (May 20.33-34p2)
- K10J41L 2010 JL41 (arc=10 days, H=20.6 ~257m) from ARO Westfield (May 20.17-18p4)
- K10J34V 2010 JV34 (arc=13 days, H=20.9 ~224m) from ARO Westfield (May 20.19p5), University Hills Obs. (May 20.28-30p5), and Lenomiya Obs. (May 21.19-20p3)
- K10J00G 2010 JG (arc=16 days, H=20.9 ~224m) from ARO Westfield (May 20.19-20p3)
- K10G75R 2010 GR75 (arc=37 days, H=19.6 ~407m) from Spacewatch 1.8m (May 20.40p3)
- K10C44N 2010 CN44 (Q=4.777 AU, arc=94 days, H=19.7 ~389m) from Spacewatch 1.8m (May 20.31-32p3)
- K04J20X 2004 JX20 (arc=3 opp, H=19.4 ~446m) from ARO Westfield (May 20.24-25p4)
- J99V11O 1999 VO11 (arc=4 opp, H=18.6 ~645m) from Tholen team/Mauna Kea (May 19.25p3)
- N4061 234061 1999 HE1 from Vicksburg Obs. (May 20.39-40p4)
- G4215 164215 Doloreshill (2004 MF6) from MLS (May 20.26-28p4)
- G4201 164201 2004 EC from MLS (May 20.17-19p4)
- F3957 153957 2002 AB29 from CSS (May 20.38-40p4)
- F2671 152671 1998 HL3 from CSS (May 20.27-29p3)
- 85818 85818 1998 XM4 from La Sagra Obs. (May 20.02-04p3)
- 37638 37638 1993 VB from Spacewatch 0.9m (May 20.27-30p3)
- 19764 19764 2000 NF5 from La Sagra Obs. (May 20.12-14p3)
- 12923 12923 Zephyr (1999 GK4) from CSS (May 20.27-29p4)
MPEC 2010-K33 - "01:54 UT" - 2010 KB8
- K10K08B 2010 KB8 (small asteroid, q=0.241 AU, Earth MOID=2.7 LD, H=23.9 ~56m) was discovered at 0816 UT on 19 May by CSS, which observed it at May 19.34-41p10. The discovery was confirmed by Grasslands Obs. (May 19.42p3), ARO Westfield (May 20.15p3), MLS (May 20.28p3), Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) (May 20.33p4), and Saint-Barthelemy Obs. (May 20.99-01p4). This object will be coming within ten lunar distances (LD) of Earth, reaching 8.2 LD on 24 May.
MPEC 2010-K32 - "01:50 UT" - 2010 KA8
- K10K08A 2010 KA8 (H=21.6 ~162m) was discovered at 0750 UT on 19 May by Tenagra II Obs., which observed it at May 19.33-34p3 and 20.31-36p6. The discovery was confirmed by Rio Cuarto Obs. (May 19.96-98p3), ARO Westfield (May 20.20-21p5), Tzec Maun Obs. Mayhill (May 20.27-32p6), Sabino Canyon Obs. (May 20.31-32p3), and Saint-Barthelemy Obs. (May 20.96-98p3).
Observers on 21 May '10
A total of 22 observing facilities appear in today's MPECs.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2010-K32, 2010-K33 & 2010-K34 -- 2010 KB8, 2010 KA8, 2010 JV34, 2010 JO71, 2010 JL41, 2010 JG88, 2010 JG, 2010 JE88, 2010 GA34, 2004 JX20|
|703||Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2010-K33, 2010-K34 & 2010-K37 -- 2010 KO10, 2010 KB8, 153957, 152671, 12923|
|651||Grasslands Obs. in Arizona, 1 in MPEC 2010-K33 -- 2010 KB8|
|695]||Mark Trueblood via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2010-K33 -- 2010 KB8|
|J75||La Sagra Obs. in Spain, 2 in MPEC 2010-K34 -- 85818, 19764|
|H13||Lenomiya Obs. in Arizona, 2 in MPEC 2010-K34 -- 2010 JV34, 2010 JN71|
|H01||Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2010-K35, 2010-K37, 2010-K38, 2010-K39 & 2010-K40 -- 2010 KR10, 2010 KQ10, 2010 KP10, 2010 KO10, 2010 HZ108|
|5682||David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-K34 & 2010-K35 -- 2010 HZ108, 1999 VO11|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 6 in MPECs 2010-K33, 2010-K34, 2010-K39 & 2010-K40 -- 2010 KR10, 2010 KQ10, 2010 KB8, 2010 JO33, 164215, 164201|
|I20||Rio Cuarto Obs. in Argentina, 1 in MPEC 2010-K32 -- 2010 KA8|
|H11||Rodeo Obs. in New Mexico, 1 in MPEC 2010-K38 -- 2010 KP10|
|854||Sabino Canyon Obs. in Arizona, 3 in MPECs 2010-K32, 2010-K37 & 2010-K38 -- 2010 KP10, 2010 KO10, 2010 KA8|
|B04||Saint-Barthelemy Obs. in Italy, 4 in MPECs 2010-K32, 2010-K33, 2010-K37 & 2010-K38 -- 2010 KP10, 2010 KO10, 2010 KB8, 2010 KA8|
|E12||Siding Spring Survey in New South Wales, 1 in MPEC 2010-K36 -- 2010 JM151|
|691||Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2010-K34 & 2010-K38 -- 2010 KP10, 37638|
|291||Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2010-K34 & 2010-K38 -- 2010 KP10, 2010 JV39, 2010 JE88, 2010 HS20, 2010 HA, 2010 GR75, 2010 FC81, 2010 CN44|
|926||Tenagra II Obs. in Arizona, 6 in MPECs 2010-K32, 2010-K34, 2010-K37 & 2010-K38 -- 2010 KP10, 2010 KO10, 2010 KE, 2010 KA8, 2010 JG88, 2010 JF88|
|H10||Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-K32 -- 2010 KA8|
|G72||University Hills Obs. in southern California, 2 in MPEC 2010-K34 -- 2010 JV34, 2010 FC81|
|H47||Vicksburg Obs. in Mississippi, 1 in MPEC 2010-K34 -- 234061|
|C51||WISE in Earth polar orbit, 2 in MPECs 2010-K35 & 2010-K36 -- 2010 JM151, 2010 HZ108|
|G56||Walnut Creek Obs. in northern California, 2 in MPECs 2010-K34 & 2010-K37 -- 2010 KO10, 2010 GA34|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 21 May '10
Notes for Today's Latest Risk Assessments
|2010 KQ10||JPL Sentry||2358||2016-2108||79||9.6e-08||-4.77||-5.14||0||JPL: "Analysis based on 15 observations spanning 1.0369 days (2010-May-20.41696 to 2010-May-21.45382)." Diameter approximately 0.207 km. from mean, weighted H=21.1.|
|2010 KV7||NEODyS||1438||2034-2088||39||2.31e-05||-5.15||-5.54||0||NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2010/05/17.202 to 2010/05/20.250."|
|2010 KQ||JPL Sentry||2358||2036||1||5.6e-08||-8.91||-8.91||0||JPL: "Analysis based on 32 observations spanning 5.0325 days (2010-May-16.16161 to 2010-May-21.19407)." Diameter approximately 0.007 km. from mean, weighted H=28.5.|
|2010 JH110||NEODyS||1438||R E M O V E D||-|
|2010 JE88||JPL Sentry||1438||2041||1||2.0e-09||-6.48||-6.48||0||JPL: "Analysis based on 73 observations spanning 6.0935 days (2010-May-14.24843 to 2010-May-20.34192)." Diameter approximately 0.170 km. from mean, weighted H=21.5.|
|2010 HS20||NEODyS||1438||2039||1||1.72e-08||-6.83||-6.83||0||NEODyS: "Based on 52 optical observations (of which 4 are rejected as outliers) from 2010/04/20.420 to 2010/05/19.440."|
|JPL Sentry||1438||R E M O V E D||JPL: Risk listing removed at 0951 UTC.|
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 21 May '10
Times are UTC for when items were noted or added by The Tracking News.
|2358||Noted that JPL Sentry has updated its 2010 KQ risk assessment - see above|
Noted that JPL Sentry has posted 2010 KQ10 as an impact risk - see above
|2106||Grabbed MPEC 2010-K35 - 2010 HZ108 - see above|
Grabbed MPEC 2010-K36 - 2010 JM151 - see above
Grabbed MPEC 2010-K37 - 2010 KO10 - see above
Grabbed MPEC 2010-K38 - 2010 KP10 - see above
Grabbed MPEC 2010-K39 - 2010 KQ10 - see above
Grabbed MPEC 2010-K40 - 2010 KR10 - see above
|1438||Noted that JPL Sentry has removed 2010 HS20 as an impact risk - see above|
Noted that NEODyS has updated its 2010 HS20 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JE88 risk assessment - see above
Noted that NEODyS has removed 2010 JH110 as an impact risk - see above
Noted that NEODyS has posted 2010 KV7 as an impact risk - see above
Grabbed MPEC 2010-K34 - Daily Orbit Update - see above
|0200||Grabbed MPEC 2010-K32 - 2010 KA8 - see above|
Grabbed MPEC 2010-K33 - 2010 KB8 - see above