Contents on 23 August '08
- IAU Minor Planet Center
- NEOCP Activity -- seven listings: 2 new, 5 updated
- New MPECs -- one MPEC
- Observers -- seventeen observing facilities
- Impact Risk Monitoring -- one object
- Chronology
Resources:
- Consolidated Risk Tables - the CRT page
- Earth's Busy Neighborhood Traffic Report
- Ephemerides for risk-rated and nearby objects
- 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.
NEOCP Activity on 23 August '08
The MPC's NEO Confirmation Page has 7 listings: 2 new, 5 updated
When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two new and five updated listings. Of these, five were "one nighters."
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 August '08
Minor Planet Electronic Circulars
As of last check at 2357 UTC, there has been one MPEC issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
<< DOU on 23 Aug. '08 >> MPEC 2008-Q22 - "06:06 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08L00A 2008 LA (small asteroid, arc=73 days, H=23.1 ~81m) from David Tholen's team on Mauna Kea (Aug. 13.55-56p2 at R=22.9-23.3)
- Observations of recently (no longer) risk-listed objects
- K08P09J 2008 PJ9 (almost small, Q=4.224 AU, arc=14 days, H=21.9 ~141m) from Astronomical Research Obs. (ARO) (Aug. 20.25-27p3)
- K08P03H 2008 PH3 (arc=19 days, H=21.7 ~155m) from Hibiscus Obs. (Aug. 22.57-59p2)
- K08O08P 2008 OP8 (arc=22 days, H=19.7 ~389m) from ARO (Aug. 20.16-17p3)
- K08O02X 2008 OX2 (arc=23 days, H=20.0 ~339m) from ARO (Aug. 20.17p3)
- K08N03O 2008 NO3 (Q=4.666 AU, arc=192 days, H=18.5 ~676m) from the Spacewatch 1.8m telescope (Feb. 8.23-24p3)
- Observations of small asteroids (H>22.0)
- K08P02G 2008 PG2 (arc=17 days, H=22.7 ~98m) from ARO (Aug. 20.15-16p5)
- K08O00M 2008 OM (arc=26 days, H=22.3 ~117m) from ARO (Aug. 20.14-15p4)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K08O08M 2008 OM8 (arc=21 days, H=22.0 ~135m) from ARO (Aug. 20.28-29p3)
- Observations of other objects
- K08Q00B 2008 QB (q=0.314 AU, arc=3 days, H=20.7 ~245m) from ARO (Aug. 20.17p7), Parma Obs. (Aug. 20.91-93p4), and Great Shefford Obs. (Aug. 22.87-89p4)
- K08O09S 2008 OS9 (arc=18 days, H=19.2 ~490m) from Moletai Obs. (Aug. 6.94p3)
- K08O02V 2008 OV2 (arc=23 days, H=20.3 ~295m) from ARO (Aug. 20.09-13p3)
- K08O00N 2008 ON (arc=28 days, H=20.5 ~269m) from ARO (Aug. 20.18p6) and McCarthy Obs. (Aug. 23.08-09p3)
- K08N00U 2008 NU (Q=4.203 AU, arc=50 days, H=17.6 ~1.02 km) from ARO (Aug. 20.30p3)
- K08N00B 2008 NB (arc=50 days, H=19.1 ~513m) from ARO (Aug. 20.28-29p3)
- K08M01R 2008 MR1 (arc=2 opp, H=18.5 ~676m) from the Mt. Lemmon Survey (MLS) (2006 Jan. 23.26-27p4 at V=21.7-22.4) and ARO (Aug. 20.26-28p7)
- K08M01H 2008 MH1 (Q=4.263 AU, arc=53 days, H=18.4 ~708m) from ARO (Aug. 20.07-08p4)
- K08J20O 2008 JO20 (Q=5.284 AU, arc=165 days, H=17.2 ~1.23 km) from the Catalina Sky Survey (CSS) (2007 Dec. 31.19-20p3)
- K08J19T 2008 JT19 (arc=2 opp, H=19.8 ~371m) from Nordic Near-Earth-Object Network (NEON) (2005 June 2.95-96p2)
- K04X44N 2004 XN44 (arc=2 opp, H=18.4 ~708m) from the Spacewatch 0.9m telescope (Aug. 22.34-38p3)
- K04M07O 2004 MO7 (arc=3 opp, H=18.8 ~589m) from Tiki Obs. (Aug. 22.62-63p2)
- I9700 189700 2001 TA45 from Paus Obs. (Aug. 18.85-86p2)
- I8452 188452 2004 HE62 from Crespadoro Obs. (Aug. 18.80p3) and McCarthy Obs. (Aug. 23.11-13p3)
- 90403 90403 2003 YE45 from Crespadoro Obs. (Aug. 18.83-84p4)
- 65733 65733 1993 PC from Spacewatch 0.9m (Aug. 22.35-38p3)
- 08567 8567 1996 HW1 from Mt. Tuffley Obs. (Aug. 22.86p3)
- 07889 7889 1994 LX from Ojai Obs. (July 26.23p1 & 28.20p1)
- 04179 4179 Toutatis (1989 AC) from Mt. Tuffley Obs. (Aug. 22.91-92p3)
Observers on 23 August '08
Seventeen observing facilities appear in today's MPEC.
| Code | Observer / observatory |
|---|---|
| H55 | Astronomical Research Obs. (ARO) in Illinois, 13 in MPEC 2008-Q22 -- 2008 QB, 2008 PJ9, 2008 PG2, 2008 OX2, 2008 OV2, 2008 OP8, 2008 ON, 2008 OM8, 2008 OM, 2008 NU, 2008 NB, 2008 MR1, 2008 MH1 |
| 703 | Catalina Sky Survey in Arizona, 1 in MPEC 2008-Q22 -- 2008 JO20 |
| A30 | Crespadoro Obs. in Italy, 2 in MPEC 2008-Q22 -- 90403, 188452 |
| J95 | Great Shefford Obs. in England, 1 in MPEC 2008-Q22 -- 2008 QB |
| F84 | Hibiscus Obs. in Tahiti, 1 in MPEC 2008-Q22 -- 2008 PH3 |
| 5682 | David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-Q22 -- 2008 LA |
| 932 | McCarthy Obs. in Connecticut, 2 in MPEC 2008-Q22 -- 2008 ON, 188452 |
| 152 | Moletai Obs. in Lithuania, 1 in MPEC 2008-Q22 -- 2008 OS9 |
| G96 | Mt. Lemmon Survey in Arizona, 1 in MPEC 2008-Q22 -- 2008 MR1 |
| J93 | Mt. Tuffley Obs. in England, 2 in MPEC 2008-Q22 -- 8567, 4179 |
| J50 | Nordic Near-Earth-Object Network, 1 in MPEC 2008-Q22 -- 2008 JT19 |
| 669 | Ojai Obs., 1 in MPEC 2008-Q22 -- 7889 |
| A56 | Parma Obs. in Italy, 1 in MPEC 2008-Q22 -- 2008 QB |
| B49 | Paus Obs. in Spain, 1 in MPEC 2008-Q22 -- 189700 |
| 691 | Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2008-Q22 -- 2004 XN44, 65733 |
| 291 | Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-Q22 -- 2008 NO3 |
| F85 | Tiki Obs. in Tahiti, 1 in MPEC 2008-Q22 -- 2004 MO7 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 23 August '08
| 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 |
| 2008 LA | NEODyS | 1613 | 2058-2070 | 5 | 9.76e-05 | -3.15 | -3.15 | 0 | NEODyS: "Based on 84 optical observations (of which 1 are rejected as outliers) from 2008/06/01.170 to 2008/08/13.557." |
| JPL Sentry | 1502 | 2058-2061 | 3 | 9.8e-05 | -3.15 | -3.15 | 0 | JPL: "Analysis based on 83 observations spanning 73.387 days (2008-Jun-01.16922 to 2008-Aug-13.555821)." Diameter approximately 0.080 km. from mean, weighted H=23.1. | |
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.
Chronology on 23 August '08
Times are UTC for when items were noted or added by The Tracking News.
| 1613 | Noted that NEODyS has updated its 2008 LA risk assessment - see above |
| 1502 | Noted that JPL Sentry has updated its 2008 LA risk assessment - see above Grabbed MPEC 2008-Q22 - Daily Orbit Update - see above |