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There may have been another Jupiter impact, caught by amateur observer Masayuki Tachikawa in Japan around 1822 UT on August 20th. See Emily Lakdawalla's report for more info and links. Sky & Telescope reports no debris plume has been spotted during two subsequent Jupiter rotations, but corroboration has come from two other event observers in Japan. Image courtesy of M. Tachikawa (Ganymede at lower right, north is up).

Contents  on 23 August '10

• IAU Minor Planet Center
  • NEOCP Activity -- none
  • New MPECs -- one MPEC
• Observers -- five observing facilities
• Impact Risk Monitoring -- one object
• Chronology

Resources:

• Consolidated Risk Tables - the CRT page
    Of 321 risk-listed objects, 9 have had news in the last month. Updated at 1426 UTC.
• Earth's Busy Neighborhood Traffic Report
    No objects are known to be within ten LD of Earth today. Updated at 1608 UTC.
• Ephemerides for risk-rated and nearby objects
• News image catalog
• Old & new CRT Archive
• Old News Archive & Small Objects Archive

The latest A/CC news is available via framed access,  RSS news feed, or redirection. - Note: A/CC has a main Web site and also a backup site with its own duplicate RSS news feed.

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.

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NEOCP Activity  on 23 August '10

The MPC's NEO Confirmation Page is currently empty

The NEOCP is currently empty and hasn't been noted by The Tracking News as being active yet today (checked at 2358 UTC). It was last noted active yesterday.

<<   Top | Contents | NEOCP | MPECs | Observers | Risks | Chronology | Index   >>

New MPECs  on 23 August '10

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

<< DOU on 23 Aug. '10 >>  MPEC 2010-Q23 - "06:09 UT" - Daily Orbit Update

• Observations of risk-listed objects
• K10P66R   2010 PR66 (Q=4.851 AU, arc=7 days, H=19.4 ~446m) from Astronomical Research Obs. Westfield (Aug. 22.19-21p3)
• Observations of recently (no longer) risk-listed objects
• K10P09M   2010 PM9 (arc=17 days, H=20.0 ~339m) from ARO Westfield (Aug. 22.29-30p4)
• Observations of small asteroids (H>22.0)
• K10P66S   2010 PS66 (arc=7 days, H=25.1 ~32m) from ARO Westfield (Aug. 22.27-28p3) and McDonald Obs. (Aug. 22.38p3)
• Observations of almost-small asteroids (21.7<H<=22.0)
• K10O00B   2010 OB (Q=4.386 AU, arc=35 days, H=21.9 ~141m) from ARO Westfield (Aug. 22.34-36p3)
• Observations of other objects
• K10P75Y   2010 PY75 (Q=4.523 AU, arc=7 days, H=18.5 ~676m) from ARO Westfield (Aug. 22.08-10p3)
• K10P22Y   2010 PY22 (arc=14 days, H=19.2 ~490m) from ARO Westfield (Aug. 22.22-24p4)
• K10P10M   2010 PM10 (arc=16 days, H=19.7 ~389m) from ARO Westfield (Aug. 22.27-28p3)
• K10P09L   2010 PL9 (arc=17 days, H=20.0 ~339m) from ARO Westfield (Aug. 22.16-18p4)
• K10P02P   2010 PP2 (arc=19 days, H=21.2 ~195m) from ARO Westfield (Aug. 22.18-21p5)
• K10OA1N   2010 ON101 (arc=22 days, H=20.5 ~269m) from ARO Westfield (Aug. 22.07-09p4)
• K10O00C   2010 OC (Q=4.710 AU, arc=34 days, H=19.0 ~537m) from ARO Westfield (Aug. 22.34-36p5)
• K10M01F   2010 MF1 (arc=65 days, H=19.6 ~407m) from Castelmartini Obs. (Aug. 21.87p3), ARO Westfield (Aug. 22.06-08p6), and Santa Mama Obs. (Aug. 22.88-90p5)
• K10L63Y   2010 LY63 (arc=70 days, H=17.8 ~933m) from Tanti Obs. (Aug. 22.05-06p4)
• K10F92O   2010 FO92 (arc=156 days, H=20.0 ~339m) from Castelmartini Obs. (Aug. 21.88p2) and Santa Mama Obs. (Aug. 22.84-87p5)
• K07VI9G   2007 VG189 (arc=2 opp, H=19.2 ~490m) from ARO Westfield (Aug. 22.11-12p4)
• K07L00L   2007 LL (arc=4 opp, H=20.4 ~282m) from ARO Westfield (Aug. 22.14-16p3)
• K06B06N   2006 BN6 (Q=4.353 AU, arc=5 opp, H=17.4 ~1.12 km) from ARO Westfield (Aug. 22.22-24p4)
• K01R11Y   2001 RY11 (arc=5 opp, H=17.2 ~1.23 km) from ARO Westfield (Aug. 22.13-15p4)
• F4029   154029 2002 CY46 from McDonald Obs. (Aug. 22.45-46p3)
• 04055   4055 Magellan (1985 DO2) from Santa Mama Obs. (Aug. 22.82-83p5)

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Observers  on 23 August '10

Five observing facilities appear in today's MPEC.

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Impact Risk Monitoring  on 23 August '10

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

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.

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Chronology  on 23 August '10

Times are UTC for when items were noted or added by The Tracking News.