Contents on 23 September '07
- IAU Minor Planet Center
- Impact Risk Monitoring -- one object reported
Notes: Due to travel, these pages will update irregularly for the rest of the month.
Until September 16th this daily news page, which had included links to news and science papers as well as some occasional original reporting, was called Major News About Minor Objects. Without the news-link and science-link sections, this page was renamed as The Tracking News to more more accurately reflect its continuing purpose.
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 this year 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 23 September '07
The MPC's NEO Confirmation Page has 3 listings: 1 new, 2 updated
When last checked at 2130 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one new and two updated listings. Of these, two were "one nighters." So far Tracking News has counted a total of nine objects listed on the NEOCP at some point today.
To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.
New MPECs on 23 September '07
Minor Planet Electronic Circulars
As of last check at 2130 UTC, there have been five MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2007-S41 time-stamped "06:11 UT" - Daily Orbit Update - see below
- MPEC 2007-S42 time-stamped "19:16 UT" - 2007 SN6 - see below
- MPEC 2007-S43 time-stamped "19:20 UT" - 2007 SO6 - see below
- MPEC 2007-S44 time-stamped "19:25 UT" - 2007 SP6 - see below
- MPEC 2007-S45 time-stamped "19:29 UT" - 2007 SQ6
MPEC 2007-S45 - "19:29 UT" - 2007 SQ6
- K07S06Q 2007 SQ6 (Earth MOID=4.2 LD, H=21.6 ~162m) was discovered at 0427 UT 22 Sept. by LINEAR, which observed it at Sept. 22.19-22p4. The discovery was confirmed by Great Shefford Obs. (Sept. 22.86-87p3), Schiaparelli Obs. (Sept. 22.91p2), Alter Satzberg Obs. (Sept. 22.95-98p5), Farpoint Obs. (Sept. 23.15-16p2), Astronomical Research Obs. (ARO) (Sept. 23.16p3), and Heidelberg-Konigstuhl Obs. (Sept. 23.77-78p3).
MPEC 2007-S44 - "19:25 UT" - 2007 SP6
- K07S06P 2007 SP6 (H=17.9 ~891m) was discovered at 1151 UT 21 Sept. by the Catalina Sky Survey (CSS), which observed it at Sept. 21.49-51p4. The discovery was confirmed by the Siding Spring Survey (SSS) (Sept. 21.62-63p2), CEAMIG-REA (Sept. 22.32p3), E. Guido via RAS Obs. Mayhill (Sept. 22.40-43p3), ARO (Sept. 22.40-41p3 & 23.39-40p3), Hibiscus Obs. (Sept. 22.48-51p3), Shenton Park Obs. (Sept. 22.85-86p3), Remanzacco Obs. (Sept. 23.06-08p3), Great Shefford Obs. (Sept. 23.11p3), and Farpoint Obs. (Sept. 23.40-41p5).
MPEC 2007-S43 - "19:20 UT" - 2007 SO6
- K07S06O 2007 SO6 (small asteroid, H=25.2 ~31m) was discovered at 0647 UT 21 Sept. by LINEAR, which observed it at Sept. 21.28-33p5. The discovery was confirmed by Hibiscus Obs. (Sept. 22.44-46p5), Schiaparelli Obs. (Sept. 22.94-95p3), Remanzacco Obs. (Sept. 23.02-03p3), Great Shefford Obs. (Sept. 23.06-08p3), ARO (Sept. 23.26p3 & 23.32-33p3), and Farpoint Obs. (Sept. 23.37-38p3).
MPEC 2007-S42 - "19:16 UT" - 2007 SN6
- K07S06N 2007 SN6 (small asteroid, Q=4.012 AU, Earth MOID=1.8 LD, H=25.1 ~32m) was discovered at 0656 UT 19 Sept. by LINEAR, which observed it at Sept. 19.29-32p4 and 21.40-44p4. The discovery was confirmed by Great Shefford Obs. (Sept. 22.92-95p2), Schiaparelli Obs. (Sept. 22.93-97p2), and Farpoint Obs. (Sept. 23.32-36p3).
- Observations of risk-listed objects
- K07S00J 2007 SJ (arc=6 days, H=16.3 ~1.86 km) from Desert Moon Obs. (Sept. 22.14-16p3) and Great Shefford Obs. (Sept. 22.90-94p2)
- Observations of small asteroids (H>22.0)
- K07S01U 2007 SU1 (arc=2 days, H=25.3 ~29m) from ARO (Sept. 21.11-12p3)
- K07R19W 2007 RW19 (arc=9 days, H=24.7 ~39m) from Great Shefford Obs. (Sept. 23.03-04p3)
- K07R01H 2007 RH1 (arc=19 days, H=22.6 ~102m) from Desert Moon Obs. (Sept. 22.18-22p3)
- Observations of other objects
- K07S01R 2007 SR1 (arc=2 days, H=19.3 ~467m) from Schiaparelli Obs. (Sept. 19.97p1 & 20.02p1)
- K07RD3L 2007 RL133 (arc=8 days, H=20.2 ~309m) from Desert Moon Obs. (Sept. 22.25-27p2)
- K07R20D 2007 RD20 (arc=8 days, H=21.1 ~204m) from Desert Moon Obs. (Sept. 22.40-41p3) and ARO (Sept. 22.43-44p3)
- K07R19T 2007 RT19 (arc=8 days, H=18.2 ~776m) from Desert Moon Obs. (Sept. 22.35-38p3)
- K07R12U 2007 RU12 (arc=10 days, H=19.6 ~407m) from Desert Moon Obs. (Sept. 22.31-33p3) and ARO (Sept. 22.42-43p3)
- K07R12R 2007 RR12 (arc=10 days, H=19.9 ~355m) from Altenburg Obs. (Sept. 21.98-00p5)
- K07R10U 2007 RU10 (arc=11 days, H=18.9 ~562m) from Desert Moon Obs. (Sept. 22.09-12p3)
- K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Homburg-Erbach Obs. (Sept. 21.98-01p2) and Hamamatsu-Yuto Obs. (Sept. 22.55p1 & 22.70-72p5)
- K07P09P 2007 PP9 (arc=42 days, H=21.3 ~186m) from ARO (Sept. 22.42-43p3)
- K07P08E 2007 PE8 (arc=129 days, H=19.4 ~446m) from New Millennium Obs. (Sept. 11.86-88p3 & 11.93p2)
- K07O00V 2007 OV (arc=68 days, H=19.2 ~490m) from LINEAR (Sept. 22.29-33p5)
- K07L32R 2007 LR32 (arc=119 days, H=17.2 ~1.23 km) from New Millennium Obs. (Sept. 11.87-89p3 & 11.94-95p2) and Homburg-Erbach Obs. (Sept. 21.87-93p3)
- K02S00V 2002 SV (arc=2 opp, H=19.8 ~371m) from Dresden Obs. (Sept. 22.83-85p3)
- K02RC9T 2002 RT129 (arc=2 opp, H=19.5 ~426m) from LINEAR (Sept. 22.36-39p4)
- J98S15D 1998 SD15 (arc=4 opp, H=19.2 ~490m) from Homburg-Erbach Obs. (Sept. 21.81-88p3), Hamamatsu-Yuto Obs. (Sept. 22.50-51p3), and Dresden Obs. (Sept. 22.80-82p5)
- F4278 154278 2002 TB9 from LINEAR (Sept. 22.35-39p4)
- 68359 68359 2001 OZ13 from Desert Moon Obs. (Sept. 22.44-47p3)
- 16636 16636 1993 QP from Homburg-Erbach Obs. (Sept. 21.82p1)
- 03200 3200 Phaethon (1983 TB) from LINEAR (Sept. 22.44-47p3)
Observers on 23 September '07
A total of 20 observing facilities appear in today's MPECs.
|Code||Observer / observatory|
|A39||Altenburg Obs. in Germany, 1 in MPEC 2007-S41 -- 2007 RR12|
|B03||Alter Satzberg Obs. in Austria, 1 in MPEC 2007-S45 -- 2007 SQ6|
|H55||Astronomical Research Obs. in Illinois, 7 in MPECs 2007-S41, 2007-S43, 2007-S44 & 2007-S45 -- 2007 SU1, 2007 SQ6, 2007 SP6, 2007 SO6, 2007 RU12, 2007 RD20, 2007 PP9|
|I77||CEAMIG-REA in Brazil, 1 in MPEC 2007-S44 -- 2007 SP6|
|703||Catalina Sky Survey in Arizona, 1 in MPEC 2007-S44 -- 2007 SP6|
|448||Desert Moon Obs. in New Mexico, 8 in MPEC 2007-S41 -- 2007 SJ, 2007 RU12, 2007 RU10, 2007 RT19, 2007 RL133, 2007 RH1, 2007 RD20, 68359|
|639||Dresden Obs. in Germany, 2 in MPEC 2007-S41 -- 2002 SV, 1998 SD15|
|734||Farpoint Obs. in Kansas, 4 in MPECs 2007-S42, 2007-S43, 2007-S44 & 2007-S45 -- 2007 SQ6, 2007 SP6, 2007 SO6, 2007 SN6|
|J95||Great Shefford Obs. in England, 6 in MPECs 2007-S41, 2007-S42, 2007-S43, 2007-S44 & 2007-S45 -- 2007 SQ6, 2007 SP6, 2007 SO6, 2007 SN6, 2007 SJ, 2007 RW19|
|379||Hamamatsu-Yuto Obs. in Japan, 2 in MPEC 2007-S41 -- 2007 PU11, 1998 SD15|
|024||Heidelberg-Konigstuhl Obs. in Germany, 1 in MPEC 2007-S45 -- 2007 SQ6|
|F84||Hibiscus Obs. in Tahiti, 2 in MPECs 2007-S43 & 2007-S44 -- 2007 SP6, 2007 SO6|
|196||Homburg-Erbach Obs. in Germany, 4 in MPEC 2007-S41 -- 2007 PU11, 2007 LR32, 1998 SD15, 16636|
|704||LINEAR in New Mexico, 7 in MPECs 2007-S41, 2007-S42, 2007-S43 & 2007-S45 -- 2007 SQ6, 2007 SO6, 2007 SN6, 2007 OV, 2002 RT129, 154278, 3200|
|A24||New Millennium Obs. in Italy, 2 in MPEC 2007-S41 -- 2007 PE8, 2007 LR32|
|H06%||E. Guido in Italy via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2007-S44 -- 2007 SP6|
|473||Remanzacco Obs. in Italy, 2 in MPECs 2007-S43 & 2007-S44 -- 2007 SP6, 2007 SO6|
|204||Schiaparelli Obs. in Italy, 4 in MPECs 2007-S41, 2007-S42, 2007-S43 & 2007-S45 -- 2007 SR1, 2007 SQ6, 2007 SO6, 2007 SN6|
|D21||Shenton Park Obs. in Western Australia, 1 in MPEC 2007-S44 -- 2007 SP6|
|E12||Siding Spring Survey in New South Wales, 1 in MPEC 2007-S44 -- 2007 SP6|
Impact Risk Monitoring on 23 September '07
Notes for Today's Latest Risk Assessments
|2007 SJ||NEODyS||1333||2014-2078||19||1.94e-06||-1.44||-1.98||1||NEODyS: "Based on 42 optical observations (of which 0 are rejected as outliers) from 2007/09/17.183 to 2007/09/22.937. NOTE: The Virtual Impactor in 2078/01/15.514 in the table above is rated as Torino Scale 1."|
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 this.
Chronology on 23 September '07
Times are UTC for when the items were noted or added by Tracking News.
|2130||Grabbed MPEC 2007-S42 - 2007 SN6 - see above|
Grabbed MPEC 2007-S43 - 2007 SO6 - see above
Grabbed MPEC 2007-S44 - 2007 SP6 - see above
Grabbed MPEC 2007-S45 - 2007 SQ6 - see above
|1333||Noted that NEODyS has updated its 2007 SJ risk assessment - see above|
Grabbed MPEC 2007-S41 - Daily Orbit Update - see above