Death of a comet, probably a fragment of an ancient, much larger comet (see SpaceWeather.com yesterday). This Sun-diving act was seen from the SOHO LASCO C2 Coronagraph with the Sun, indicated by the white circle, blocked out by an occulting disk. The times of the composited images, beginning at the bottom on June 7th, are 1954, 2108, 2206, 2306, 2354, 0054, 0154,0254, 0330, and 0430 GMT. They were assembled at A/CC at 1024x1024 resolution, cropped, and reduced to half size. Original images courtesy of NASA/ESA SOHO mission.
Contents on 9 June '07
- Minor-Object News -- three items
- Minor-Object Science -- none today
- IAU Minor Planet Center
- NEOCP Activity -- seven listings: 3 new, 4 updated
- New MPECs -- two MPECs
- Observers -- 24 observing facilities
- Impact Risk Monitoring -- three objects reported
- Chronology
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 9 June '07
- "Meteoric rise," Malaysia Star 9 June - Quote: "One man is turning meteorites into affordable consumer products... jewellery, apparel, car accessories, keris and souvenir."
- "Meteorite stolen from museum in Magadan, Russian Far East," RIA Novosti 9 June - Quote: "The first pieces of the Seimchan meteorite, which weighs over 7 kilograms (15 pounds), were found in 1967 near the Seimchan gold mine in the Magadan Region."
- "Chunk of Meteorite Stolen from Russian Museum," Sofia News Agency 9 June - Quote: "[The] thieves broke into a history museum in the village of Seimchan at night."
NEOCP Activity on 9 June '07
The MPC's NEO Confirmation Page has 7 listings: 3 new, 4 updated
When last checked at 2359 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had three new and four updated listings. Of these, five were "one nighters."
New MPECs on 9 June '07
Minor Planet Electronic Circulars
There were two MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-L34 time-stamped "06:07 UT" - Daily Orbit Update - see below
- MPEC 2007-L35 time-stamped "18:25 UT" - 2004 RV10
MPEC 2007-L35 - "18:25 UT" - 2004 RV10
- K04R10V 2004 RV10 (i=36.9°, H=19.5 ~426m) from Astronomical Research Obs. (ARO) (June 6.20-24p2 at V=22.5-7 & 9.20-27p4 at V=22.6-9)
<< DOU on 9 June '07 >> MPEC 2007-L34 - "06:07 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K07L00L 2007 LL (arc=1 day, H=19.7 ~389m) from Guidestar Obs. (June 8.87-89p4), Consell Obs. (June 8.90-91p6), and Sandlot Obs. (June 9.13-14p4)
- K07L00D 2007 LD (arc=2 days, H=19.2 ~490m) from San Marcello Pistoiese Obs. (June 7.94-95p3), KLENOT (June 8.87-88p6), and Alter Satzberg Obs. (June 8.88-90p4)
- K04X44N 2004 XN44 (arc=7 days, H=18.2 ~776m) from David Tholen's team on Mauna Kea (2004 Dec. 18.23-27p5 & 2004 Dec. 20.28p2 at R=22.2)
- Observations of small asteroids (H>22.0)
- K07K02W 2007 KW2 (arc=18 days, H=22.3 ~117m) from Desert Moon Obs. (June 8.32-36p3)
- K07K00E 2007 KE (arc=23 days, H=22.5 ~107m) from the Spacewatch 1.8m telescope (June 8.34-35p2)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K04K17H 2004 KH17 (q=0.357 AU, arc=2 opp, H=22.0 ~135m) from LINEAR (June 8.23-27p4)
- Observations of other objects
- K07L00F 2007 LF (arc=2 days, H=20.5 ~269m) from 1st Moscow Gymnasium Obs. (June 7.84-94p29), LINEAR (June 8.18-22p5), Sandlot Obs. (June 8.29p4), Tiki Obs. (June 8.35-37p2), Begues Obs. (June 8.85-86p3), Gelenau Obs. (June 8.89-90p4), KLENOT (June 8.91p6), Guidestar Obs. (June 8.91-92p3), Alter Satzberg Obs. (June 8.96-97p4), and Greiner Research Obs. (June 9.13-18p15)
- K07L00E 2007 LE (arc=2 days, H=19.1 ~513m) from Petit Jean Mtn. South Obs. (PJMSO) (June 8.22-23p11), Tiki Obs. (June 8.32-35p2), Begues Obs. (June 8.89p3), KLENOT (June 8.90p7), Alter Satzberg Obs. (June 8.94-95p4), and Greiner Research Obs. (June 9.17p5)
- K07L00A 2007 LA (arc=2 days, H=21.4 ~178m) from Sandlot Obs. (June 8.27-28p3)
- K07K07G 2007 KG7 (q=0.220 AU, arc=13 days, H=20.5 ~269m) from Spacewatch 1.8m (June 8.28-32p3)
- K07K00J 2007 KJ (arc=23 days, H=19.0 ~537m) from Spacewatch 1.8m (June 8.33-34p3)
- K07J35J 2007 JJ35 (i=56.1°, arc=25 days, H=18.5 ~676m) from PJMSO (June 8.24-25p4) and Begues Obs. (June 8.87-88p3)
- K07J20Z 2007 JZ20 (i=40.5°, arc=28 days, H=18.4 ~708m) from Sandlot Obs. (June 8.31-34p3)
- K07J02Y 2007 JY2 (arc=30 days, H=21.7 ~155m) from Spacewatch 1.8m (June 8.22p2)
- K07H00Z 2007 HZ (arc=2 opp, H=20.4 ~282m) from Rob Matson using the Siding Spring Digital Sky Survey (1984 April 5.52-56p2)
- K07G49D 2007 GD49 (arc=56 days, H=16.8 ~1.48 km) from Sandlot Obs. (June 9.17-18p2)
- K07F01K 2007 FK1 (arc=83 days, H=20.2 ~309m) from the Catalina Sky Survey (CSS) (June 8.37-38p3)
- K07D40Z 2007 DZ40 (Q=4.841 AU, arc=105 days, H=18.6 ~645m) from Haute Provence Obs. (May 8.02-04p5)
- K06K89E 2006 KE89 (i=45.1°, q=0.211 AU, arc=3 opp, H=16.5 ~1.70 km) from Haute Provence Obs. (May 8.06-08p10) and Guidestar Obs. (June 8.94-96p3)
- K06G00B 2006 GB (arc=2 opp, H=20.3 ~295m) from Haute Provence Obs. (May 8.09-11p10)
- K05L03R 2005 LR3 (arc=3 opp, H=17.2 ~1.23 km) from CSS (June 8.25-27p4)
- K05B14G 2005 BG14 (arc=2 opp, H=18.6 ~645m) from the Spacewatch 0.9m telescope (June 8.23-27p3)
- K05A13D 2005 AD13 (arc=2 opp, H=17.9 ~891m) from Iluro Obs. (June 7.97-98p3), Guidestar Obs. (June 8.93-95p3), and Begues Obs. (June 8.93-94p3)
- K04L01J 2004 LJ1 (arc=4 opp, H=15.5 ~2.69 km, q=0.923 AU) from CSS (June 8.28-30p4)
- K03H02F 2003 HF2 (q=0.361 AU, arc=4 opp, H=19.4 ~446m) from Desert Moon Obs. (June 8.40-44p3)
- K02PE2Q 2002 PQ142 (arc=4 opp, H=17.6 ~1.02 km) from CSS (June 8.19-21p4)
- K02K04F 2002 KF4 (i=37.2°, Q=4.571 AU, arc=3 opp, H=17.2 ~1.23 km) from Begues Obs. (June 8.86p3)
- J98U01L 1998 UL1 (i=42.0°, arc=5 opp, H=16.6 ~1.62 km) from LINEAR (June 8.19-23p4)
- F2895 152895 2000 CQ101 from LONEOS (June 7.18-23p3)
- E5656 145656 4788 P-L from LINEAR (June 8.23-27p5) and Skylive Obs. (June 9.02-03p3)
- D8883 138883 2000 YL29 from LINEAR (June 8.19-23p5)
- D6874 136874 1998 FH74 from Gelenau Obs. (June 8.92-93p5) and Skylive Obs. (June 9.06-07p3)
- 85275 85275 1994 LY from Iluro Obs. (June 7.99-01p3)
- 08566 8566 1996 EN from CSS (June 8.16-18p4)
- 06050 6050 Miwablock (1992 AE) from Spacewatch 0.9m (June 8.35-39p3)
- 03352 3352 McAuliffe (1981 CW) from CSS (June 8.28-30p4)
- 01917 1917 Cuyo (1968 AA) from Spacewatch 1.8m (June 8.24-26p3)
Observers on 9 June '07
A total of 24 observing facilities appeared in this day's MPECs.
| B16 | 1st Moscow Gymnasium Obs. in Russia, 1 in MPEC 2007-L34 -- 2007 LF |
| B03 | Alter Satzberg Obs. in Austria, 3 in MPEC 2007-L34 -- 2007 LD, 2007 LF, 2007 LE |
| H55 | Astronomical Research Obs. in Illinois, 1 in MPEC 2007-L35 -- 2004 RV10 |
| 170 | Begues Obs. in Spain, 5 in MPEC 2007-L34 -- 2007 LF, 2007 LE, 2007 JJ35, 2005 AD13, 2002 KF4 |
| 703 | Catalina Sky Survey in Arizona, 6 in MPEC 2007-L34 -- 2007 FK1, 2005 LR3, 2004 LJ1, 2002 PQ142, 8566, 3352 |
| 176 | Consell Obs. in Spain, 1 in MPEC 2007-L34 -- 2007 LL |
| 448 | Desert Moon Obs. in New Mexico, 2 in MPEC 2007-L34 -- 2007 KW2, 2003 HF2 |
| B32 | Gelenau Obs. in Germany, 2 in MPEC 2007-L34 -- 2007 LF, 136874 |
| H51 | Greiner Research Obs. in Wisconsin, 2 in MPEC 2007-L34 -- 2007 LF, 2007 LE |
| A17 | Guidestar Obs. in Germany, 4 in MPEC 2007-L34 -- 2007 LL, 2007 LF, 2006 KE89, 2005 AD13 |
| 511 | Haute Provence Obs. in Germany, 3 in MPEC 2007-L34 -- 2007 DZ40, 2006 KE89, 2006 GB |
| B19 | Iluro Obs. in Spain, 2 in MPEC 2007-L34 -- 2005 AD13, 85275 |
| 246 | KLENOT in the Czech Republic, 3 in MPEC 2007-L34 -- 2007 LD, 2007 LF, 2007 LE |
| 704 | LINEAR in New Mexico, 5 in MPEC 2007-L34 -- 2004 KH17, 2007 LF, 1998 UL1, 145656, 138883 |
| 699 | LONEOS in Arizona, 1 in MPEC 2007-L34 -- 152895 |
| 5682 | David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2007-L34 -- 2004 XN44 |
| H45 | Petit Jean Mtn. South Obs. in Arkansas, 2 in MPEC 2007-L34 -- 2007 LE, 2007 JJ35 |
| 104 | San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2007-L34 -- 2007 LD |
| H36 | Sandlot Obs. in Kansas, 5 in MPEC 2007-L34 -- 2007 LL, 2007 LF, 2007 LA, 2007 JZ20, 2007 GD49 |
| 260& | Rob Matson in California using the Siding Spring Digital Sky Survey in New South Wales, 1 in MPEC 2007-L34 -- 2007 HZ |
| B40 | Skylive Obs. in Italy, 2 in MPEC 2007-L34 -- 145656, 136874 |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2007-L34 -- 2005 BG14, 6050 |
| 291 | Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2007-L34 -- 2007 KE, 2007 KG7, 2007 KJ, 2007 JY2, 1917 |
| F85 | Tiki Obs. in Tahiti, 2 in MPEC 2007-L34 -- 2007 LF, 2007 LE |
Impact Risk Monitoring on 9 June '07
| 0000NNN000 Object | Risk Monitor | When Noted UTC | 0000T0000 Year Range | VI # | 000NN00 Prob Cum | T0000 PS Cum | T0000 PS Max | T S | Notes for Today's Latest Risk Assessments |
| 2007 LL | JPL | 1333 | R E M O V E D | JPL #2 for the day: Risk listing removed at 1031 UTC. | |||||
| 2007 LD | NEODyS | 1333 | R E M O V E D | ||||||
| JPL | 1333 | R E M O V E D | JPL: Risk listing removed at 1058 UTC. | ||||||
| 2004 XN44 | NEODyS | 1343 | 2013-2074 | 16 | 4.55e-07 | -3.15 | -3.67 | 0 | NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2004/12/13.254 to 2004/12/20.281." |
| JPL | 1333 | 2013-2102 | 18 | 2.9e-07 | -2.93 | -3.25 | 0 | JPL: "Analysis based on 28 observations spanning 7.0266 days (2004-Dec-13.253512 to 2004-Dec-20.280097)." Diameter approximately 0.730 km. from mean, weighted H=18.3. | |
Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale
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 9 June '07
Times are UTC for when the items were noted by Major News.
| 1928 | Grabbed MPEC 2007-L35 - 2004 RV10 - see above |
| 1510 | Added link to news story, "Meteorite stolen from museum in Magadan, Russian Far East" Added link to news story, "Meteoric rise" Added link to news story, "Chunk of Meteorite Stolen from Russian Museum" |
| 1343 | Noted that NEODyS has updated its 2004 XN44 risk assessment - see above |
| 1334 | Grabbed MPEC 2007-L34 - Daily Orbit Update - see above |
| 1333 | Noted that JPL has updated its 2004 XN44 risk assessment - see above Noted that JPL has removed 2007 LD as an impact risk - see above Noted that NEODyS has removed 2007 LD as an impact risk - see above Noted that JPL has removed 2007 LL as an impact risk - see above |
| 0052 | Noted that JPL has posted 2007 LL as an impact risk - see above |
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