CRT 2007 January-June Object Archive

Current assessment:  NO impact solutions

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-M47

Notes:  2007 ML24 was discovered by the Mt. Lemmon Survey on 21 June 2007 and was observed again the next day and on the 24th. The discovery was announced on June 27th, which is when JPL posted it as an impact risk. NEODyS posted it on June 28th and on Aug. 4th revised its risk assessment based on the existing data.

This object wasn't reported observed after June 24th until the DOU MPEC of 9 Aug. 2007, which carried observations by David Tholen's team on Mauna Kea from July 26th. And the same day, Aug. 9th, all impact solutions were removed. Until this happened, the matter of 2007 ML24 had been left hanging with a three-day observing arc and impact solutions as early as four years away, in 2011.

Packed designation:  K07M24L

Current assessments:  NEODyS [backup] & JPL NEOPO

Diameter:  718 meters (JPL 28 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-M43

Notes:  2007 MB24 was discovered by LINEAR on 24 June 2007 and announced two days later, which is when JPL posted it with impact solutions. NEODyS posted it on June 27th.

Update: NEODyS and JPL removed 2007 MB24 as an impact risk on July 1st.

Packed designation:  K07M24B

Current assessment:  NO impact solutions

Diameter:  860 meters (JPL 16 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-L38

Notes:  2007 LS was discovered with the Spacewatch 0.9m telescope on 8 June 2007 and announced three days later, which is when JPL posted it as an impact risk. NEODyS posted it on June 12th, and both risk monitors removed it on June 18th.

Packed designation:  K07L00S

Current assessments:  NO impact solutions

Diameter:  900 meters (JPL 25 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-M01

Notes:  2007 LQ19 was discovered on 13 June 2007 by the Siding Spring Survey, which alone confirmed it. The discovery was announced early on June 16th and that day this object was posted by NEODyS and JPL as an impact risk. NEODyS removed it as a risk on June 25th and then reposted it with a 2082 impact solution.

For those new to impact risk monitoring, it is important to understand that impact solutions are not predictions but rather possibilities from variant orbit calculations that cannot be elminated yet based on the available data. In the case of 2007 LQ19, which appeared in early risk assessments to be dangerous for the near term, all but one set of far-off impact solutions were removed only nine days after the first solutions were posted. And those last solutions were removed on July 15th after this object was next reported observed (by Tiki Observatory).

Packed designation:  K07L19Q

Current assessment:  NO impact solutions

Diameter:  370 meters (JPL 9 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-L33

Notes:  2007 LL was discovered by the Catalina Sky Survey on 8 June 2007 and announced the same day. JPL posted it with impact solutions and later removed them on June 9th.

Packed designation:  K07L00L

Current assessment:  NO impact solutions

Diameter:  354 meters (JPL 8 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-L22

Notes:  2007 LD was discovered by LINEAR on 7 June 2007 and announced the same day. It was posted by JPL and NEODyS as an impact risk on the 8th and removed by them the next day.

Packed designation:  K07L00D

Current assessment:  NO impact solutions

Diameter:  620 meters (JPL 21 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-L52

Notes:  2007 LB15 was discovered by the Catalina Sky Survey on 13 June 2007 and was announced the next day, which is when JPL and NEODyS posted it as an impact risk. Their first highly preliminary risk assessments started off each with an impact solution in June of next year, but these and many other solutions were dropped as soon as the next observations became available. Following a week of observation, 2007 LB15 was removed as an impact risk by NEODyS on June 21st and by JPL on June 22nd.

Packed designation:  K07L15B

Current assessment:  NO impact solutions

Diameter:  500 meters (JPL 15 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-L51

Notes:  2007 LA15 was discovered on 13 June 2007 by the Catalina Sky Survey and announced the next day, which is when NEODyS posted it as an impact risk. NEODyS removed it on June 15th, and JPL posted it on the 15th and removed it on the 16th.

Packed designation:  K07L15A

Current assessment:  NO impact solutions

Diameter:  210 meters (JPL 7 June 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-L19

Notes:  2007 LA was discovered by the Catalina Sky Survey on 6 June 2007 and announced the next day, which is when JPL posted impact solutions that were removed a day later.

Packed designation:  K07L00A

Current assessment:  NO impact solutions

Diameter:  38 meters (JPL 24 May 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-K35

Notes:  2007 KV2 was discovered on 21 May 2007 by the Catalina Sky Survey and announced two days later. JPL posted it as an impact risk on May23rd and removed it on the 25th.

Packed designation:  K07K02V

Current assessment:  NO impact solutions

Diameter:  830 meters (JPL 18 May 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-J51

Notes:  2007 JZ20 was discovered by LINEAR on 11 May 2007 and was announced late the next day. NEODyS listed it with impact solutions on May 13th, JPL posted it on May 16th, and both risk monitors removed it on May 19th.

Packed designation:  K07J20Z

Current assessment:  NO impact solutions

Diameter:  145 meters (16 May 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-J33

Notes:  2007 JY2 was discovered on May 9th by the Mt. Lemmon Survey and announced the next day, which is when JPL posted it with impact solutions. NEODyS posted it on May 11th and removed it on May 15th, and JPL removed it on May 16th.

Packed designation:  K07J02Y

Current assessment:  NO impact solutions

Diameter:  675 meters (18 May 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-J49

Notes:  2007 JF16 was discovered by the Mt. Lemmon Survey on 10 May 2007 and announced two days later. It was posted as an impact risk on May 13th by NEODyS, which removed it on May 18th. JPL posted it on May 16th and removed it the next day.

Packed designation:  K07J16F

Current assessment:  NO impact solutions

Diameter:  30 meters (13 May 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-J53

Notes:  2007 JB21 was discovered by LINEAR on 12 May 2007 and announced the next day, which is when NEODyS posted it as an impact risk. It was removed on May 15th.

Packed designation:  K07J21B

Current assessment:  NO impact solutions

Diameter:  290 meters (JPL 19 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H17

Notes:  2007 HZ was discovered on 18 April 2007 by the Mt. Lemmon Survey and announced the same day. JPL posted it early on the 19th UTC (still the 18th in Pasadena), with a highly preliminary first impact solution in October of 2008. NEODyS posted this object as a risk later on the 19th and both risk monitors removed it on the 20th.

Packed designation:  K07H00Z

Current assessment:  NO impact solutions

Diameter:  1.00 km. = 0.62 mile (JPL 22 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPECs 2007-H37 & 2007-K58

Notes:  2007 HX4 was discovered by the Catalina Sky Survey on 20 April 2007 and announced the next day, which is when JPL posted it as an impact risk. NEODyS posted it on April 22nd, and both risk monitors removed it on April 26th.

On May 26th an update MPEC reported that Rob Matson had found 2007 HX4 in the archives from NEAT's first and second U.S. Air Force telescopes on Haleakala from 22 and 26 April 1998 and 20 May 2001.

Packed designation:  K07H04X

Current assessment:  NO impact solutions

Diameter:  90 meters (JPL 26 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H15

Notes:  2007 HP passed Earth at about 4.8 lunar distances on 13 April 2007 and was discovered by the Catalina Sky Survey on the 18th, which is when it was announced and JPL posted it with impact solutions beginning in October 2009. NEODyS posted 2007 HP as a risk on April 19th and removed it the next day, while JPL's risk assessment changed to a single low-rated solution in 2081. JPL removed 2007 HP as a risk on April 27th.

Packed designation:  K07H00P

Current assessment:  NO impact solutions

Diameter:  30 meters (26 April 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H54

Notes:  2007 HH44 was discovered by the Mt. Lemmon Survey on 24 April 2007 and announced the next day. On April 26th it was posted as an impact risk by NEODyS, which removed it on the 28th.

Packed designation:  K07H44H

Current assessment:  NO impact solutions

Diameter:  521 meters (JPL 1 May 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H53

Notes:  2007 HG44 was discovered on 24 April 2007 by the Catalina Sky Survey and announced the next day. JPL posted and removed it as an impact risk on April 26th and 27th. On May 1st, when the next observation became available, JPL and NEODyS both posted it with impact solutions, which were all removed a day later.

Packed designation:  K07H44G

Current assessment:  NO impact solutions

Diameter:  650 meters (JPL 27 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H52

Notes:  2007 HF44 was discovered by the Mt. Lemmon Survey on 22 April 2007 and announced on the 25th, which is when JPL posted it as an impact risk. NEODyS posted it on April 26th and both risk monitors removed it on the 28th.

Packed designation:  K07H44F

Current assessment:  NO impact solutions

Diameter:  380 meters (JPL 16 May 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H45

Notes:  2007 HE15 was discovered by the Siding Spring Survey on 22 April 2007 and announced on the 24th, which is when NEODyS and JPL listed it with impact solutions. NEODyS removed it on May 13th and JPL on May 20th.

Packed designation:  K07H15E

Current assessment:  NO impact solutions

Diameter:  52 meters (JPL 24 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H44

Notes:  2007 HD15 was discovered by the Catalina Sky Survey on 22 April 2007 and announced on the 24th, which is when JPL posted it as a very low-rated impact risk. This was removed on April 28th.

Packed designation:  K07H15D

Current assessment:  NO impact solutions

Diameter:  32 meters (JPL 17 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-H10

Notes:  2007 HC was discovered by the Siding Spring Survey on 16 April 2007 and announced the same day, and was posted as an impact risk by JPL on early on the 17th (still the 16th in Pasadena). NEODyS posted it later on the 17th and both risk monitors removed it on April 18th.

Packed designation:  K07H00C

Current assessment:  NO impact solutions

Diameter:  4.461 km. = 2.77 miles (JPL 7 May 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPECs 2007-H58 & 2007-J25

Notes:  2007 HA59, which is in an unusual orbit for an asteroid, was discovered on 24 April 2007 by Spacewatch with its 0.9m telescope and announced on April 26th. JPL posted it on April 26th and NEODyS on the 27th. Both removed it on May 8th after an update MPEC reported that 2007 HA59 had been identified in observations from the Spacewatch 0.9m telescope from 23 and 28 May 2003.

The DOU MPEC for May 9th carried two positions for 2007 HA59 from NEAT's Haleakala telescope on 11 May 2003.

Packed designation:  K07H59A

Current assessment:  NO impact solutions

Diameter:  245 meters (16 April 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-G48

Notes:  2007 GW4 was discovered by the Catalina Sky Survey on 14 April and announced that day. NEODyS listed it with impact solutions the next day and removed it on April 16th.

Packed designation:  K07G04W

Current assessment:  NO impact solutions

Diameter: 110 meters (JPL 15 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-G47

Notes:  2007 GU4 was discovered by the Catalina Sky Survey on 14 April and announced the same day. JPL posted it as an impact risk early the next day (still the 14th in Pasadena). NEODyS posted it on the 15th and both risk monitors removed it on April 16th.

Packed designation:  K07G04U

Current assessment:  NO impact solutions

Diameter: 39 meters (JPL 11 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-G28

Notes:  2007 GU1 was discovered by the Catalina Sky Survey on 11 April 2007 and announced the same day, which is also when JPL posted it as an impact risk. When further observations were reported the next day, JPL removed all of its impact solutions for this object.

2007 GU1 passed Earth at 2.1 lunar distances April 16th and went out of view the next day.

Packed designation:  K07G01U

Current assessment:  NO impact solutions

Diameter:  1.09 km. = 0.68 mile (JPL 14 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPECs 2007-G23 & 2007-H39

Notes:  2007 GG was discovered on 7 April 2007 by David Tholen's team on Mauna Kea using the 3.6m Canada-France-Hawaii Telescope (CHFT). The discovery was announced two days later, which is when JPL posted this object as an impact risk. NEODyS posted it the next day and removed it on April 14th. JPL removed it on the 16th.

An MPEC on 21 April 2007 reported that 2007 GG had been correllated with observations of an object designated 2006 SZ370 that had been observed by the Catalina Sky Survey on 28 Aug. and by the SZTE Asteroid Program on 22-23 Sept. 2006.

Packed designation:  K07G00G

Current assessment:  NO impact solutions

Diameter:  190 meters (JPL 8 April 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-G18

Notes:  2007 GC was discovered by the Mt. Lemmon Survey on 7 April 2007, and was confirmed and announced on that same day. JPL and NEODyS posted it as an impact risk the next day and removed it on April 9th.

Packed designation:  K07G00C

Current assessment:  NO impact solutions

Diameter:  27 meters (JPL 21 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-F57

Notes:  2007 FQ3 was discovered on 20 March 2007 by the Mt. Lemmon Survey and announced the next day, which is when JPL posted it with impact solutions that were all removed a day later.

Packed designation:  K07F03Q

Current assessment:  NO impact solutions

Diameter:  360 meters (JPL 20 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-F40

Notes:  2007 FK1 was discovered on 17 March 2007 by LONEOS and announced two days later, which is when JPL posted it as an impact risk. NEODyS posted it on March 20th and both risk monitors removed it on March 26th.

Packed designation:  K07F01K

Current assessment:  NO impact solutions

Diameter:  640 meters (JPL 19 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-F35

Notes:  2007 FE1 was discovered by the Catalina Sky Survey on 17 March 2007 and was announced two days later, which is when JPL posted it as an impact risk. NEODyS posted it on March 20th and both risk monitors removed it on March 22nd.

Packed designation:  K07F01E

Current assessment:  NO impact solutions

Diameter:  409 meters (JPL 22 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPECs 2007-F29 & 2007-H70

Notes:  2007 FE was discovered by the Catalina Sky Survey on 16 March 2007, and was announced the next day and posted with impact solutions by JPL early on the 18th UT. NEODyS posted it later that day and both risk monitors removed it on March 26th.

On April 28th it was reported that Rob Matson had found 2007 FE in the archives from NEAT's Mt. Palomar telescope from 4 and 23 Feb. and 4 March 2002.

Packed designation:  K07F00E

Current assessment:  NO impact solutions

Diameter:  1.35 km. = 0.84 mile (25 May 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPECs 2007-F28, 2007-H13 & 2007-K50

Notes:  2007 FD was discovered with the Spacewatch 0.9m telescope on 16 March 2007 and announced the next day, which is when JPL posted it as an impact risk. NEODyS posted it on March 18th.

After the Spacewatch 1.8m telescope closed out the discovery confirmation process on March 17th, this large object wasn't reported observed again until an update MPEC was posted late on April 17th with recovery observations from the Mt. Lemmon Survey and the Spacewatch 1.8m telescope during 14-16 April. And JPL and NEODyS removed 2007 FD as an impact risk on April 18th UTC.

On May 25th another update MPEC reported that Rob Matson had found 2007 FD in the archives from the Siding Spring Sky Survey from 13 Aug. 1982 and from NEAT's Hawaiian telescope on 24 Feb. and 20 and 29 March 2001.

Packed designation:  K07F00D

Current assessment:  NO impact solutions

Diameter:  280 meters (JPL 17 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-F22

Notes:  2007 FA was discovered by the Catalina Sky Survey on 16 March 2007 and was announced on the 17th, which is when NEODyS and JPL posted it as an impact risk. They both removed it on March 22nd.

Packed designation:  K07F00A

Current assessment:  NO impact solutions

Diameter:  1.40 km. = 0.87 mile (JPL 11 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-E47

Notes:  The Siding Spring Survey (SSS) is the NASA/UA/ANU outpost in Australia on a lonely watch for unknown kilometer-size objects appearing the southern celestial hemisphere, and it has bagged one more. 2007 EX was discovered on the 10th and was confirmed also from below the equator, by CEAMIG-REA in Brazil, and was announced early on the 11th. Later that day JPL and NEODyS posted it with impact solutions beginning nine years away, which was highly preliminary, based on only nine astrometric positions taken over a period of less than ten hours. JPL and NEODyS removed it just a day later when further observations were reported from the SSS.

Packed designation:  K07E00X

Current assessment:  NO impact solutions

Diameter:  675 meters (14 March 2007 estimate from standard formula)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-E43

Notes:  2007 ES was discovered with the Spacewatch 1.8m telescope on 9 March 2007 and announced the next day. On March 11th NEODyS posted 2007 ES with low-rated impact solutions for August or September of many years starting next year. With less than 32 hours of observing, this risk assessment was, of course, highly preliminary and one day later all impact solutions were eliminated when the next observations became available.

Packed designation:  K07E00S

Current assessment:  NO impact solutions

Diameter:  170 meters (JPL 11 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-E42

Notes:  2007 EQ was discovered on 10 March 2007 by the Catalina Sky Survey and announced that day. It was posted as an impact risk on March 11th by JPL and removed later the same day after further observation became available.

Packed designation:  K07E00Q

Current assessment:  NO impact solutions

Diameter:  648 meters (JPL 18 March 2007 estimate)

JPL:  Orbit Viewer     NEODyS:  object home page [backup] & observations [backup]

Circulars:  MPEC 2007-F16

Notes:  2007 EM88 was discovered on 15 March 2007 with the Spacewatch 0.9m telescope, was announced on the 16th, and was posted on the 17th by JPL and NEODyS as an impact risk. All impact solutions were removed on March 21st.

Packed designation:  K07E88M