During preparations for spin-balance testing at Astrotech "the back of a solar array panel was slightly damaged by a technician's tool," reportedly requiring "minor repairs" but not affecting the new launch schedule. See June E-news (313Kb PDF) posted yesterday for links to other mission news and info, including fun stuff for kids. Photo credit: NASA.
Contents on 18 June '07
- Minor-Object News -- two items
- Minor-Object Science -- none today
- IAU Minor Planet Center
- Impact Risk Monitoring -- three objects reported
WELCOME to A/CC's prototype daily news publication designed to be the viewing end of a planned autonomous 24-hour news service. The new tools and this publication format are working well enough now to share with readers. It is expected that this approach will require less time to maintain than our previous news and small asteroid pages, which were retired on May 14th. There's still more development ahead and there probably will be some glitches along the way, but this is what's needed to keep up with the increasing pace of minor-object news. The CRT page will be maintained separately for a little while longer, until all of this is working smoothly. And the CRT and small-asteroid ephemerides will be kept going.
Minor-Object News on 18 June '07
- "Catch a falling star," Sunday Times 17 June - Quote: "The strange objects that lit the night skies [over Sri Lanka] on June 10 have now been confirmed as meteors."
- "Comet discovery brightened up miserable night," Taranaki Daily News 18 June - Quote: "[Rodney Austin] found Comet Austin 1982 M1 on a miserable night 25 years ago today [and] has found two more comets since -- one in 1984 and another in 1989."
NEOCP Activity on 18 June '07
The MPC's NEO Confirmation Page has 2 listings: 2 new
When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new listings. Both of these were "one nighters." Major News counted a total of nine objects listed on the NEOCP at some point on this day.
New MPECs on 18 June '07
Minor Planet Electronic Circulars
There were seven MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-M08 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2007-M09 time-stamped "14:38 UT" - Comet C/2007 M1 (McNaught) - see below
- MPEC 2007-M10 time-stamped "15:35 UT" - 2007 MF - see below
- MPEC 2007-M11 time-stamped "15:41 UT" - 2007 MG - see below
- MPEC 2007-M12 time-stamped "15:45 UT" - 2007 MH - see below
- MPEC 2007-M13 time-stamped "23:18 UT" - 2007 MQ - see below
- MPEC 2007-M14 time-stamped "23:22 UT" - 2007 MR
MPEC 2007-M14 - "23:22 UT" - 2007 MR
- K07M00R 2007 MR (borderline-small, H=22.0 ~135m) was discovered at 0717 UT 18 June by the Catalina Sky Survey (CSS), which observed it at June 18.30-36p8. The discovery was confirmed by the SZTE Asteroid Program (SZTE) (June 18.92p3), Wildberg Obs. (June 18.92-93p6), and Great Shefford Obs. (June 18.94-95p3).
MPEC 2007-M13 - "23:18 UT" - 2007 MQ
- K07M00Q 2007 MQ (small asteroid, Q=4.268 AU, Earth MOID=4.7 LD, H=23.6 ~65m) was discovered at 0529 UT 18 June by CSS, which observed it at June 18.23-30p8 and 18.36-37p4. The discovery was confirmed by Farra d'Isonzo Obs. (June 18.86-87p2), Wildberg Obs. (June 18.86-87p6), SZTE (June 18.90p3), and Great Shefford Obs. (June 18.91-93p4).
MPEC 2007-M12 - "15:45 UT" - 2007 MH
- K07M00H 2007 MH (H=20.9 ~224m) was discovered at 1740 UT 17 June by the Siding Spring Survey (SSS), which observed it at June 17.74-83p12. The discovery was confirmed by Mt. John Obs. (June 18.39-40p5) and Jim Young via Table Mtn. Obs. (June 18.39-41p4).
MPEC 2007-M11 - "15:41 UT" - 2007 MG
- K07M00G 2007 MG (H=20.8 ~234m) was discovered at 0710 UT 17 June by the Spacewatch 0.9m telescope, which observed it at June 17.30-33p3. The discovery was confirmed by the Spacewatch 1.8m telescope (June 18.23-24p3), CSS (June 18.24-25p3), and Young/Table Mtn. (June 18.33-35p4).
MPEC 2007-M10 - "15:35 UT" - 2007 MF
- K07M00F 2007 MF (small asteroid, Earth MOID=6.4 LD, H=26.1 ~20m) was discovered at 1446 UT 16 June by SSS, which observed it at June 16.62-63p8, 16.69-73p4, and 17.73p2. The discovery was confirmed by CSS (June 17.25-26p4), Farpoint Obs. (June 17.28p4), Mt. John Obs. (June 17.35-39p7 & 18.42p4), and Young/Table Mtn. (June 18.24-29p3).
MPEC 2007-M09 - "14:38 UT" - Comet C/2007 M1 (McNaught)
- CK07M010 C/2007 M1 (McNaught) (i=139.9°, q=6.416 AU, TP=2009 Mar. 24.947 TT) from SSS (June 16.71p1, 16.77-78p3 & 16.83p1), Astronomical Research Obs. (ARO) (June 17.29-31p3), Farpoint Obs. (June 17.31p3), Table Mtn. Obs. (June 18.32-36p4), and Grasslands Obs. (June 18.38-40p2)
- Observations of risk-listed objects
- K07L19Q 2007 LQ19 (arc=4 days, H=17.9 ~891m) from Farpoint Obs. (June 17.39p3)
- K07L15B 2007 LB15 (arc=4 days, H=19.1 ~513m) from Spacewatch 1.8m (June 17.35-37p3)
- K07L00S 2007 LS (Q=4.541 AU, arc=10 days, H=17.8 ~933m) from Spacewatch 1.8m (June 17.23-24p3 & 18.20-21p3)
- Observations of other objects
- K07L15A 2007 LA15 (arc=4 days, H=19.5 ~426m) from ARO (June 17.25-27p4)
- K07L08V 2007 LV8 (arc=6 days, H=20.0 ~339m) from ARO (June 16.30-31p5) and Verona Obs. (June 17.91-92p4)
- K07L00F 2007 LF (arc=11 days, H=20.6 ~257m) from Verona Obs. (June 17.94-95p4)
- K07L00D 2007 LD (arc=10 days, H=19.0 ~537m) from Spacewatch 1.8m (June 17.21-22p3)
- K07K07G 2007 KG7 (q=0.237 AU, arc=23 days, H=20.6 ~257m) from Spacewatch 1.8m (June 18.18-19p3)
- K07K04N 2007 KN4 (Q=5.557 AU, arc=28 days, H=17.2 ~1.23 km) from Farpoint Obs. (June 17.36-37p3)
- K07K00J 2007 KJ (arc=32 days, H=18.9 ~562m) from ARO (June 17.11-12p3)
- K07J35J 2007 JJ35 (i=56.1°, arc=34 days, H=18.5 ~676m) from Verona Obs. (May 21.84-85p5) and ARO (June 17.15-16p3)
- K07J20Z 2007 JZ20 (i=40.5°, arc=37 days, H=18.4 ~708m) from ARO (June 17.17-19p5)
- K07H70D 2007 HD70 (arc=53 days, H=21.1 ~204m) from ARO (June 17.31-33p6)
- K07F42V 2007 FV42 (arc=88 days, H=17.8 ~933m) from Iluro Obs. (June 16.05p3)
- K07D08F 2007 DF8 (arc=115 days, H=20.4 ~282m) from Iluro Obs. (June 16.06-07p2)
- K07C26S 2007 CS26 (arc=123 days, H=21.1 ~204m) from ARO (June 17.17-21p3 at V=22.6-8)
- K06S19U 2006 SU19 (arc=2 opp, H=19.1 ~513m) from Spacewatch 1.8m (June 18.16-17p3)
- K05N44W 2005 NW44 (arc=2 opp, H=20.5 ~269m) from Iluro Obs. (June 15.00p2)
- K04S09T 2004 ST9 (arc=2 opp, H=18.1 ~812m) from Iluro Obs. (June 16.03p2)
- K04K01E 2004 KE1 (arc=2 opp, H=21.7 ~155m) from SSS (June 17.73-77p5)
- K02A02C 2002 AC2 (i=58.9°, arc=4 opp, H=16.5 ~1.70 km) from Iluro Obs. (June 16.13p1)
- K01H07Y 2001 HY7 (arc=3 opp, H=20.4 ~282m) from Spacewatch 1.8m (June 17.17-18p3)
- K00Q25K 2000 QK25 (arc=4 opp, H=18.2 ~776m) from ARO (June 17.13-15p3)
- J97G28H 1997 GH28 (arc=5 opp, H=18.1 ~812m) from Spacewatch 1.8m (June 17.45-46p3)
- E5656 145656 4788 P-L from CSS (June 17.22-25p4)
- 85713 85713 1998 SS49 from SSS (June 17.74-77p5)
- 68348 68348 2001 LO7 from Spacewatch 0.9m (June 17.29-33p3)
- 25330 25330 1999 KV4 from SSS (June 17.74-77p5)
- 07025 7025 1993 QA from ARO (June 17.29-31p3)
Observers on 18 June '07
Fifteen observing facilities appeared in this day's MPECs.
|H55||Astronomical Research Obs. in Illinois, 10 in MPECs 2007-M08 & 2007-M09 -- C/2007 M1, 2007 LA15, 2007 LV8, 2007 KJ, 2007 JJ35, 2007 JZ20, 2007 HD70, 2007 CS26, 2000 QK25, 7025|
|703||Catalina Sky Survey in Arizona, 5 in MPECs 2007-M08, 2007-M10, 2007-M11, 2007-M13 & 2007-M14 -- 2007 MR, 2007 MQ, 2007 MG, 2007 MF, 145656|
|734||Farpoint Obs. in Kansas, 4 in MPECs 2007-M08, 2007-M09 & 2007-M10 -- 2007 MF, C/2007 M1, 2007 LQ19, 2007 KN4|
|595||Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-M13 -- 2007 MQ|
|651||Grasslands Obs. in Arizona, 1 in MPEC 2007-M09 -- C/2007 M1|
|J95||Great Shefford Obs. in England, 2 in MPECs 2007-M13 & 2007-M14 -- 2007 MR, 2007 MQ|
|B19||Iluro Obs. in Spain, 5 in MPEC 2007-M08 -- 2007 FV42, 2007 DF8, 2005 NW44, 2004 ST9, 2002 AC2|
|474||Mt. John Obs. in New Zealand, 2 in MPECs 2007-M10 & 2007-M12 -- 2007 MH, 2007 MF|
|461||SZTE Asteroid Program in Hungary, 2 in MPECs 2007-M13 & 2007-M14 -- 2007 MR, 2007 MQ|
|E12||Siding Spring Survey in New South Wales, 6 in MPECs 2007-M08, 2007-M09, 2007-M10 & 2007-M12 -- 2007 MH, 2007 MF, C/2007 M1, 2004 KE1, 85713, 25330|
|691||Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2007-M08 & 2007-M11 -- 2007 MG, 68348|
|291||Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2007-M08 & 2007-M11 -- 2007 MG, 2007 LB15, 2007 LS, 2007 LD, 2007 KG7, 2006 SU19, 2001 HY7, 1997 GH28|
|673||Table Mtn. Obs. in southern California, 1 in MPEC 2007-M09 -- C/2007 M1|
|6735||Jim Young via Table Mtn. Obs. in southern California, 3 in MPECs 2007-M10, 2007-M11 & 2007-M12 -- 2007 MH, 2007 MG, 2007 MF|
|A48||Verona Obs. in Italy, 3 in MPEC 2007-M08 -- 2007 LV8, 2007 LF, 2007 JJ35|
|198||Wildberg Obs. in Germany, 2 in MPECs 2007-M13 & 2007-M14 -- 2007 MR, 2007 MQ|
Impact Risk Monitoring on 18 June '07
Notes for Today's Latest Risk Assessments
|2007 LS||JPL||1222||R E M O V E D||JPL: Risk listing removed at 1145 UTC.|
|NEODyS||1221||R E M O V E D|
|2007 LQ19||JPL||1222||2011-2106||70||2.8e-06||-1.66||-2.01||0||JPL: "Analysis based on 10 observations spanning 3.6040 days (2007-Jun-13.78733 to 2007-Jun-17.39138)." Diameter approximately 0.897 km. from mean, weighted H=17.9.|
|NEODyS||1222||2011-2079||20||1.8e-06||-1.77||-2.08||0||NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2007/06/13.788 to 2007/06/17.392."|
|2007 LB15||JPL||1222||2024-2096||26||2.1e-07||-3.18||-3.55||0||JPL: "Analysis based on 24 observations spanning 4.0197 days (2007-Jun-13.3467 to 2007-Jun-17.36645)." Diameter approximately 0.601 km. from mean, weighted H=18.8.|
|NEODyS||1222||2024-2078||37||2.47e-07||-3.10||-3.51||0||NEODyS: "Based on 24 optical observations (of which 0 are rejected as outliers) from 2007/06/13.347 to 2007/06/17.367."|
For a list of all risk-rated objects recently in view, see our ephemerides page.
An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from an 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" for more about all this.
Chronology on 18 June '07
Times are UTC for when the items were noted by Major News.
|2357||Grabbed MPEC 2007-M13 - 2007 MQ - see above|
Grabbed MPEC 2007-M14 - 2007 MR - see above
|1701||Added link to news story, "Comet discovery brightened up miserable night"|
Added link to news story, "Catch a falling star"
|1601||Grabbed MPEC 2007-M09 - Comet C/2007 M1 (McNaught) - see above|
Grabbed MPEC 2007-M10 - 2007 MF - see above
Grabbed MPEC 2007-M11 - 2007 MG - see above
Grabbed MPEC 2007-M12 - 2007 MH - see above
|1222||Noted that JPL has updated its 2007 LB15 risk assessment - see above|
Noted that NEODyS has updated its 2007 LB15 risk assessment - see above
Noted that JPL has updated its 2007 LQ19 risk assessment - see above
Noted that NEODyS has updated its 2007 LQ19 risk assessment - see above
Noted that JPL has removed 2007 LS as an impact risk - see above
Grabbed MPEC 2007-M08 - Daily Orbit Update - see above
|1221||Noted that NEODyS has removed 2007 LS as an impact risk - see above|