Contents on 20 May '10
- IAU Minor Planet Center
- Observers -- nineteen observing facilities
- Impact Risk Monitoring -- five objects
- Consolidated Risk Tables - the CRT page
Of 321 risk-listed objects, 30 have had news in the last month. Updated at 2155 UTC.
- Earth's Busy Neighborhood Traffic Report
Six objects are known to be within ten LD of Earth today. Updated at 1926 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 20 May '10
The MPC's NEO Confirmation Page has 15 listings: 5 new, 10 updated
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had five new and ten updated listings. Of these, five 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 20 May '10
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been eight MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2010-K24 time-stamped "01:36 UT" - 2010 JH124 - see below
- MPEC 2010-K25 time-stamped "06:10 UT" - Daily Orbit Update - see below
- MPEC 2010-K26 time-stamped "15:22 UT" - 2010 KU7 - see below
- MPEC 2010-K27 time-stamped "15:35 UT" - 2010 KV7 - see below
- MPEC 2010-K28 time-stamped "17:01 UT" - 2010 JC147 - see below
- MPEC 2010-K29 time-stamped "17:05 UT" - 2010 KW7 - see below
- MPEC 2010-K30 time-stamped "17:17 UT" - 2010 KX7 - see below
- MPEC 2010-K31 time-stamped "20:44 UT" - Comet C/2010 J2 (McNaught)
MPEC 2010-K31 - "20:44 UT" - Comet C/2010 J2 (McNaught)
- CK10J020 C/2010 J2 (McNaught) (i=125.8°, q=3.390 AU, TP=2010 June 1.793 TT) from Ageo Obs. (May 17.76p2), RAS Obs. Mayhill (May 19.43p3), and Tzec Maun Obs. Mayhill (May 20.43-44p4)
MPEC 2010-K30 - "17:17 UT" - 2010 KX7
- K10K07X 2010 KX7 (risk-listed, H=21.9 ~141m) was discovered at 0627 UT on 16 May by WISE, which observed it at May 16.27p1, 16.34p2, 16.40p1, 16.47p1, 16.53p2, 16.60p1, 16.67p1, 16.73p1, 16.80p1, 16.86p1, and 16.00p1. The discovery was confirmed by the Spacewatch 1.8m telescope (May 19.17-18p3).
MPEC 2010-K29 - "17:05 UT" - 2010 KW7
- K10K07W 2010 KW7 (i=147.2°, q=2.469 AU, Q=49.108 AU, H=16.0 ~2.14 km) was discovered at 0132 UT on 16 May by WISE, which observed it at May 16.06p1, 16.20p1, 16.26p1, 16.33p1, 16.39p1, 16.53p1, and 16.66p1. The discovery was confirmed by Spacewatch 1.8m (May 19.14-15p2 & 20.14-15p3 at V=21.9-22.3) and the Siding Spring Survey (SSS) (May 19.38p1).
MPEC 2010-K28 - "17:01 UT" - 2010 JC147
- K10JE7C 2010 JC147 (i=42.2°, q=3.426 AU, Q=21.948 AU, H=15.5 ~2.69 km) was discovered at 1606 UT on 15 May by WISE, which observed it at May 15.67p1, 15.94p1, 16.07p1, 16.20p1, 16.27p1, 16.33p1, 16.40p1, 16.53p1, 16.66p1, and 16.80p1. The discovery was confirmed by Spacewatch 1.8m (May 19.15-16p3 & 20.18-19p3).
MPEC 2010-K27 - "15:35 UT" - 2010 KV7
- K10K07V 2010 KV7 (risk-listed, Earth MOID=0.5 LD, H=26.0 ~21m) was discovered at 0449 UT on 17 May by the Mt. Lemmon Survey (MLS), which observed it at May 17.20-22p4 and 19.20-25p8. The discovery was confirmed by Spacewatch 1.8m (May 20.24-25p2). This object will be coming within ten lunar distances (LD) of Earth, reaching 7.7 LD on 29 May.
MPEC 2010-K26 - "15:22 UT" - 2010 KU7
- K10K07U 2010 KU7 (small asteroid, H=22.2 ~123m) was discovered at 0346 UT on 17 May by MLS, which observed it at May 17.16-18p4 and 17.23-25p4. The discovery was confirmed by Magdalena Ridge Obs. (MRO) (May 17.28-30p4) and Spacewatch 1.8m (May 19.18-19p3 & 20.22-23p3 at V=22.0-22.6).
- Observations of risk-listed objects
- K10J88E 2010 JE88 (arc=5 days, H=21.5 ~170m) from Spacewatch 1.8m (May 19.24-25p3)
- K10J80H 2010 JH80 (small asteroid, arc=6 days, H=24.5 ~43m) from Spacewatch 1.8m (May 19.28p2)
- Observations of recently (no longer) risk-listed objects
- K10J71N 2010 JN71 (arc=8 days, H=21.4 ~178m) from Tenagra II Obs. (May 19.25-26p3)
- K10G62X 2010 GX62 (Q=5.035 AU, arc=39 days, H=20.3 ~295m) from Spacewatch 1.8m (May 19.35-36p3)
- Observations of small asteroids (H>22.0)
- K10J80G 2010 JG80 (arc=6 days, H=24.0 ~54m) from Spacewatch 1.8m (May 19.31-32p2)
- K10J39T 2010 JT39 (arc=12 days, H=23.7 ~62m) from Spacewatch 1.8m (May 19.21-22p3)
- K10G33R 2010 GR33 (arc=38 days, H=22.6 ~102m) from Spacewatch 1.8m (May 19.25-26p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K10K00D 2010 KD (arc=3 days, H=21.9 ~141m) from Tenagra II Obs. (May 19.35p3)
- K10F81C 2010 FC81 (Q=4.339 AU, arc=50 days, H=21.8 ~148m) from Doc Greiner Research Obs. (DGRO) (May 19.23p10) and Blanquita Obs. (May 19.88-89p3)
- Observations of other objects
- K10J88H 2010 JH88 (Q=4.098 AU, arc=5 days, H=18.0 ~851m) from the Spacewatch 0.9m telescope (May 19.25p3) and Tenagra II Obs. (May 19.32p3)
- K10J88G 2010 JG88 (arc=3 days, H=19.4 ~446m) from LINEAR (May 17.22-25p4)
- K10J41L 2010 JL41 (arc=9 days, H=20.6 ~257m) from Tenagra II Obs. (May 19.32-33p3)
- K10J34V 2010 JV34 (arc=11 days, H=20.9 ~224m) from Timberlake Obs. (May 16.19p5) and DGRO (May 19.24p10)
- K10G33O 2010 GO33 (Q=4.093 AU, arc=38 days, H=19.2 ~490m) from Spacewatch 0.9m (May 19.21-24p3)
- K10F00P 2010 FP (Q=4.639 AU, arc=63 days, H=20.8 ~234m) from MLS (May 19.22-25p4)
- K10A79G 2010 AG79 (Q=4.562 AU, arc=38 days, H=20.2 ~309m) from David Tholen's team on Mauna Kea (March 24.34p1 at R=22.9)
- K09K05D 2009 KD5 (arc=3 opp, H=18.3 ~741m) from the Catalina Sky Survey (CSS) (May 19.42-44p4)
- K09J02M 2009 JM2 (arc=35 days, H=19.4 ~446m) from Betelgeuse Station (2009 May 19.91-92p3 & 2009 May 20.92-94p40)
- K06T00B 2006 TB (arc=3 opp, H=20.0 ~339m) from Spacewatch 1.8m (May 19.39-40p2)
- K06C10X 2006 CX10 (arc=3 opp, H=17.7 ~977m) from LINEAR (May 17.16-19p4)
- K04B58W 2004 BW58 (arc=4 opp, H=18.6 ~645m) from Spacewatch 1.8m (May 19.44-45p3)
- N4061 234061 1999 HE1 from CSS (May 19.35-37p5)
- L8863 218863 2006 WO127 from Eridanus Obs. (April 7.85-86p4, 17.85-86p3 & 18.84-85p3)
- L2546 212546 2006 SV19 from Betelgeuse Sta. (2009 May 19.90p3)
- 68216 68216 2001 CV26 from LINEAR (May 17.16-20p5)
- 06050 6050 Miwablock (1992 AE) from CSS (May 19.25-27p3)
- 03551 3551 Verenia (1983 RD) from Spacewatch 0.9m (May 19.42-46p3)
- 00887 887 Alinda (1918 DB) from CSS (May 19.35-37p5)
MPEC 2010-K24 - "01:36 UT" - 2010 JH124
- K10JC4H 2010 JH124 (i=53.9°, q=2.676 AU, Q=46.397 AU, H=14.7 ~3.89 km) was discovered at 0856 UT on 12 May by WISE, which observed it at May 12.37p1, 12.50p1, 12.64p1, 12.77p1, 12.84p1, 12.90p1, 12.97p1, 13.03p1, 13.10p1, 13.17p1, 13.23p1, 13.36p1, and 13.63p1. The discovery was confirmed by Astronomical Research Obs. Westfield (May 15.10-11p3), MRO (May 15.16-18p4, 16.26-29p4 & 17.18-21p4), Spacewatch 0.9m (May 15.22-24p2, 17.19-23p3, 19.18p1 & 19.23p1), and Tholen team/Mauna Kea (May 15.40-41p3).
Observers on 20 May '10
Nineteen observing facilities appear in today's MPECs.
|Code||Observer / observatory|
|349||Ageo Obs. in Japan, 1 in MPEC 2010-K31 -- C/2010 J2|
|H21||Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2010-K24 -- 2010 JH124|
|B75||Betelgeuse Station in Italy, 2 in MPEC 2010-K25 -- 2009 JM2, 212546|
|I99||Blanquita Obs. in Spain, 1 in MPEC 2010-K25 -- 2010 FC81|
|703||Catalina Sky Survey (CSS) in Arizona, 4 in MPEC 2010-K25 -- 2009 KD5, 234061, 6050, 887|
|H26||Doc Greiner Research Obs. (DGRO) in Wisconsin, 2 in MPEC 2010-K25 -- 2010 JV34, 2010 FC81|
|A27||Eridanus Obs. in Germany, 1 in MPEC 2010-K25 -- 218863|
|704||LINEAR in New Mexico, 3 in MPEC 2010-K25 -- 2010 JG88, 2006 CX10, 68216|
|H01||Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2010-K24 & 2010-K26 -- 2010 KU7, 2010 JH124|
|5682||David Tholen's team on Mauna Kea in Hawaii, 2 in MPECs 2010-K24 & 2010-K25 -- 2010 JH124, 2010 AG79|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 3 in MPECs 2010-K25, 2010-K26 & 2010-K27 -- 2010 KV7, 2010 KU7, 2010 FP|
|H06||RAS Obs. Mayhill in New Mexico, 1 in MPEC 2010-K31 -- C/2010 J2|
|E12||Siding Spring Survey in New South Wales, 1 in MPEC 2010-K29 -- 2010 KW7|
|691||Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2010-K24 & 2010-K25 -- 2010 JH88, 2010 JH124, 2010 GO33, 3551|
|291||Spacewatch 1.8m telescope in Arizona, 13 in MPECs 2010-K25, 2010-K26, 2010-K27, 2010-K28, 2010-K29 & 2010-K30 -- 2010 KX7, 2010 KW7, 2010 KV7, 2010 KU7, 2010 JT39, 2010 JH80, 2010 JG80, 2010 JE88, 2010 JC147, 2010 GX62, 2010 GR33, 2006 TB, 2004 BW58|
|926||Tenagra II Obs. in Arizona, 4 in MPEC 2010-K25 -- 2010 KD, 2010 JN71, 2010 JL41, 2010 JH88|
|H83||Timberlake Obs. in Virginia, 1 in MPEC 2010-K25 -- 2010 JV34|
|H10||Tzec Maun Obs. Mayhill in New Mexico, 1 in MPEC 2010-K31 -- C/2010 J2|
|C51||WISE in Earth polar orbit, 4 in MPECs 2010-K24, 2010-K28, 2010-K29 & 2010-K30 -- 2010 KX7, 2010 KW7, 2010 JH124, 2010 JC147|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 20 May '10
Notes for Today's Latest Risk Assessments
|2010 KX7||JPL Sentry||1920||2019||1||1.4e-10||-7.48||-7.48||0||JPL: "Analysis based on 16 observations spanning 2.9080 days (2010-May-16.26929 to 2010-May-19.17731)." Diameter approximately 0.150 km. from mean, weighted H=21.7.|
|2010 KV7||JPL Sentry||1920||2034-2109||48||2.8e-05||-5.10||-5.51||0||JPL: "Analysis based on 14 observations spanning 3.0485 days (2010-May-17.2011 to 2010-May-20.24965)." Diameter approximately 0.021 km. from mean, weighted H=26.0.|
|2010 JE88||JPL Sentry||1410||2041||1||7.0e-09||-5.92||-5.92||0||JPL: "Analysis based on 67 observations spanning 4.9987 days (2010-May-14.24843 to 2010-May-19.24711)." Diameter approximately 0.170 km. from mean, weighted H=21.5.|
|2010 JH80||NEODyS||2149||2074-2084||3||2.09e-06||-5.19||-5.22||0||NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2010/05/13.256 to 2010/05/19.281."|
|JPL Sentry||1410||2074-2095||5||2.1e-06||-5.19||-5.23||0||JPL: "Analysis based on 25 observations spanning 6.0246 days (2010-May-13.25519 to 2010-May-19.27974)." Diameter approximately 0.042 km. from mean, weighted H=24.5.|
|153814 2001 WN5||NEODyS||1410||2106-2122||5||4.07e-10||-6.46||-6.81||0||NEODyS: "Based on 198 optical observations (of which 4 are rejected as outliers) from 1996/02/10.397 to 2010/05/18.512."|
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 20 May '10
Times are UTC for when items were noted or added by The Tracking News.
|2149||Noted that NEODyS has updated its 2010 JH80 risk assessment - see above|
|2131||Grabbed MPEC 2010-K31 - Comet C/2010 J2 (McNaught) - see above|
|1920||Noted that JPL Sentry has posted 2010 KV7 as an impact risk - see above|
Noted that JPL Sentry has posted 2010 KX7 as an impact risk - see above
|1739||Grabbed MPEC 2010-K28 - 2010 JC147 - see above|
Grabbed MPEC 2010-K29 - 2010 KW7 - see above
Grabbed MPEC 2010-K30 - 2010 KX7 - see above
|1539||Grabbed MPEC 2010-K26 - 2010 KU7 - see above|
Grabbed MPEC 2010-K27 - 2010 KV7 - see above
|1410||Noted that NEODyS has updated its 153814 2001 WN5 risk assessment - see above|
Noted that JPL Sentry has updated its 2010 JE88 risk assessment - see above
Noted that JPL Sentry has updated its 2010 JH80 risk assessment - see above
Grabbed MPEC 2010-K25 - Daily Orbit Update - see above
|0504||Grabbed MPEC 2010-K24 - 2010 JH124 - see above|