Contents on 11 June '08
- IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 updated
- New MPECs -- three MPECs
- Observers -- 20 observing facilities
- Impact Risk Monitoring -- six objects
- 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
NOTE: These news pages will update less often and at irregular intervals through June 12th.
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 11 June '08
The MPC's NEO Confirmation Page has 2 listings: 2 updated
When last checked at 1045 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two updated listings. Of these, one was a "one nighter."
New MPECs on 11 June '08
Minor Planet Electronic Circulars
There were three MPECs issued this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2008-L46 time-stamped "06:09 UT" - Daily Orbit Update - see below
- MPEC 2008-L47 time-stamped "21:42 UT" - Comets C/2008 H4, 2008 H5, 2008 H6, 2008 H7, 2008 H8 (SOHO) - see below
- MPEC 2008-L48 time-stamped "22:05 UT" - Comets C/2008 J7, 2008 J8, 2008 J9 (SOHO)
MPEC 2008-L48 - "22:05 UT" - Comets C/2008 J7, 2008 J8, 2008 J9 (SOHO)
- CK08J090 C/2008 J9 from the LASCO Coronagraph 2 aboard the Solar & Heliospheric Obs. (SOHO) (May 5.34-46p20)
- CK08J080 C/2008 J8 from SOHO C2 (May 5.04-17p20)
- CK08J070 C/2008 J7 from SOHO C2 (May 1.63-79p24)
MPEC 2008-L47 - "21:42 UT" - Comets C/2008 H4, 2008 H5, 2008 H6, 2008 H7, 2008 H8 (SOHO)
- CK08H080 C/2008 H8 from SOHO C2 (April 30.88-96p12)
- CK08H070 C/2008 H7 from SOHO C2 (April 29.83-85p6 & 29.90-94p8)
- CK08H060 C/2008 H6 from SOHO C2 (April 27.19p2 & 27.23-31p12)
- CK08H050 C/2008 H5 from the LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. (SOHO) (April 25.51-53p4 & 25.57-72p16) and SOHO C2 (April 25.73-91p24)
- CK08H040 C/2008 H4 from SOHO C2 (April 18.35-54p20)
<< DOU on 11 June '08 >> MPEC 2008-L46 - "06:09 UT" - Daily Orbit Update
- Observations of risk-listed objects
- K08L08W 2008 LW8 (arc=1 day, H=17.3 ~1.17 km) from Desert Moon Obs. (June 10.45-46p3)
- K08L02G 2008 LG2 (small asteroid, arc=8 days, H=25.4 ~28m) from Powell Obs. (June 10.13p4), Tiki Obs. (June 10.40-43p3), and Great Shefford Obs. (June 10.00p3)
- K08L00D 2008 LD (small asteroid, arc=8 days, H=28.9 ~6m) from Magdalena Ridge Obs. (MRO) (June 10.31-32p2 at R=22.1)
- K08L00A 2008 LA (small asteroid, arc=10 days, H=23.2 ~78m) from Powell Obs. (June 10.16-17p4), MRO (June 10.24-25p3), and Great Shefford Obs. (June 10.93-94p2)
- K08K11N 2008 KN11 (small asteroid, arc=12 days, H=23.2 ~78m) from the Spacewatch 0.9m telescope (June 8.34-36p2) and Great Shefford Obs. (June 11.01p3)
- K08H04U 2008 HU4 (small asteroid, arc=41 days, H=28.2 ~8m) from MRO (June 10.26p2)
- Observations of recently (no longer) risk-listed objects
- K08K06D 2008 KD6 (arc=13 days, H=19.6 ~407m) from Great Shefford Obs. (June 11.07-08p2)
- K08K05Z 2008 KZ5 (arc=12 days, H=20.0 ~339m) from the Spacewatch 1.8m telescope (June 10.38-39p3)
- K08J24O 2008 JO24 (arc=31 days, H=18.2 ~776m) from Kanab Obs. (June 10.41-44p2)
- Observations of small asteroids (H>22.0)
- K08L02H 2008 LH2 (arc=7 days, H=24.6 ~41m) from Astronomical Research Obs. (ARO) (June 9.21-22p2) and Great Shefford Obs. (June 11.04-05p3)
- K08L00C 2008 LC (arc=9 days, H=24.6 ~41m) from Spacewatch 0.9m (June 8.33-36p2), Mirasteilas Obs. (June 10.04-06p3), and Powell Obs. (June 10.19-20p5)
- K08GB0A 2008 GA110 (Q=4.497 AU, arc=55 days, H=22.1 ~129m) from Spacewatch 0.9m (June 8.28-32p3)
- Observations of almost-small asteroids (21.7<H<=22.0)
- K08H00H 2008 HH (arc=47 days, H=21.9 ~141m) from MRO (June 10.35-36p3)
- Observations of other objects
- K08K12B 2008 KB12 (Q=4.443 AU, arc=6 days, H=21.5 ~170m) from Andrushivka Obs. (June 2.84-87p7)
- K08K02W 2008 KW2 (i=37.4°, arc=13 days, H=19.7 ~389m) from Desert Moon Obs. (June 10.21-22p4)
- K08K02V 2008 KV2 (arc=12 days, H=21.5 ~170m) from ARO (June 9.10p3)
- K08K00Q 2008 KQ (arc=14 days, H=20.6 ~257m) from Spacewatch 0.9m (June 7.35-36p2 & 10.35-39p3) and Desert Moon Obs. (June 10.25-31p3)
- K08J35T 2008 JT35 (Q=4.080 AU, arc=37 days, H=20.9 ~224m) from Tiki Obs. (June 8.41-43p3), Balzaretto Obs. (June 9.88-91p3), North Obs. (June 9.97-99p3), and Modra Obs. (June 10.99-00p4)
- K08J26R 2008 JR26 (arc=29 days, H=19.9 ~355m) from Modra Obs. (June 11.01-02p3)
- K08J14P 2008 JP14 (arc=41 days, H=19.4 ~446m) from Modra Obs. (June 11.03p3)
- K08J08A 2008 JA8 (arc=36 days, H=18.1 ~812m) from Tiki Obs. (June 10.58-61p2)
- K08J00F 2008 JF (arc=40 days, H=17.9 ~891m) from Desert Moon Obs. (June 10.16-19p3)
- K08GD3F 2008 GF133 (arc=19 days, H=21.2 ~195m) from MLS (April 5.34-41p12 discovery & April 24.24-25p4)
- K07V06T 2007 VT6 (arc=2 opp, H=20.3 ~295m) from MRO (June 10.37p3)
- K07M04C 2007 MC4 (arc=2 opp, H=21.2 ~195m) from Desert Moon Obs. (June 10.36-42p3)
- K06QB0Y 2006 QY110 (arc=3 opp, H=18.1 ~812m) from MRO (June 10.39p2)
- K04T18B 2004 TB18 (arc=2 opp, H=17.7 ~977m) from Spacewatch 0.9m (June 7.40-43p3)
- K04C02R 2004 CR2 (arc=2 opp, H=19.3 ~467m) from Desert Moon Obs. (June 10.14-15p3)
- K03A02Y 2003 AY2 (arc=3 opp, H=19.4 ~446m) from MRO (June 10.42-43p2)
- K02J00C 2002 JC (i=40.9°, arc=6 opp, H=17.3 ~1.17 km) from the Catalina Sky Survey (CSS) (June 10.16-18p4)
- K01F58C 2001 FC58 (arc=6 opp, H=20.4 ~282m) from David Tholen's team on Mauna Kea (2004 Aug. 17.26-27p3 at R=22.7-9, 2004 Aug. 19.24-25p4 at R=22.8, 2004 Aug. 21.24-25p4 at R=22.3 & May 22.25p2 at R=22.7)
- K00AK5D 2000 AD205 (arc=2 opp, H=18.6 ~645m) from Mirasteilas Obs. (June 9.95-96p3)
- D7170 137170 1999 HF1 from Mt. Tuffley Obs. (June 10.00p3)
- 89958 89958 2002 LY45 from Spacewatch 0.9m (June 6.23-27p3)
- 86878 86878 2000 HD24 from Spacewatch 0.9m (June 6.36-40p3 & 9.35-38p3)
- 85839 85839 1998 YO4 from the Siding Spring Survey (SSS) (June 10.65-68p3)
- 85628 85628 1998 KV2 from Spacewatch 0.9m (June 9.23-27p3)
- 35107 35107 1991 VH from Mt. Tuffley Obs. (June 10.98p3)
- 11398 11398 1998 YP11 from Mt. Tuffley Obs. (June 10.92-93p3)
- 05332 5332 1990 DA from CSS (June 10.44-45p4)
- 03288 3288 Seleucus (1982 DV) from Mt. Tuffley Obs. (June 10.97p3)
- 01980 1980 Tezcatlipoca (1950 LA) from Mt. Tuffley Obs. (June 10.94-95p3)
Observers on 11 June '08
A total of 20 observing facilities appeared in this day's MPECs.
| Code | Observer / observatory |
|---|---|
| A50 | Andrushivka Obs. in the Ukraine, 1 in MPEC 2008-L46 -- 2008 KB12 |
| H55 | Astronomical Research Obs. (ARO) in Illinois, 2 in MPEC 2008-L46 -- 2008 LH2, 2008 KV2 |
| A81 | Balzaretto Obs. in Italy, 1 in MPEC 2008-L46 -- 2008 JT35 |
| 703 | Catalina Sky Survey (CSS) in Arizona, 2 in MPEC 2008-L46 -- 2002 JC, 5332 |
| 448 | Desert Moon Obs. in New Mexico, 6 in MPEC 2008-L46 -- 2008 LW8, 2008 KW2, 2008 KQ, 2008 JF, 2007 MC4, 2004 CR2 |
| J95 | Great Shefford Obs. in England, 5 in MPEC 2008-L46 -- 2008 LH2, 2008 LG2, 2008 LA, 2008 KN11, 2008 KD6 |
| 682 | Kanab Obs. in Utah, 1 in MPEC 2008-L46 -- 2008 JO24 |
| H01 | Magdalena Ridge Obs. (MRO) in New Mexico, 7 in MPEC 2008-L46 -- 2008 LD, 2008 LA, 2008 HU4, 2008 HH, 2007 VT6, 2006 QY110, 2003 AY2 |
| 5682 | David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2008-L46 -- 2001 FC58 |
| B67 | Mirasteilas Obs. in Switzerland, 2 in MPEC 2008-L46 -- 2008 LC, 2000 AD205 |
| 118 | Modra Obs. in Slovakia, 3 in MPEC 2008-L46 -- 2008 JT35, 2008 JR26, 2008 JP14 |
| G96 | Mt. Lemmon Survey (MLS) in Arizona, 2 in MPEC 2008-L46 -- 2008 GF133, 2008 GF133 |
| J93 | Mt. Tuffley Obs. in England, 5 in MPEC 2008-L46 -- 35107, 137170, 11398, 3288, 1980 |
| J69 | North Obs. in England, 1 in MPEC 2008-L46 -- 2008 JT35 |
| 649 | Powell Obs. in Kansas, 3 in MPEC 2008-L46 -- 2008 LG2, 2008 LC, 2008 LA |
| E12 | Siding Spring Survey in New South Wales, 1 in MPEC 2008-L46 -- 85839 |
| 2492 | LASCO Coronagraph 2 (SOHO C2) aboard the Solar & Heliospheric Obs. (SOHO) in Earth-Sun L1 HALO orbit, 8 in MPECs 2008-L47 & 2008-L48 -- C/2008 J9, C/2008 J8, C/2008 J7, C/2008 H8, C/2008 H7, C/2008 H6, C/2008 H5, C/2008 H4 |
| 2493 | LASCO Coronagraph 3 aboard the Solar & Heliospheric Obs. in Earth-Sun L1 HALO orbit, 1 in MPEC 2008-L47 -- C/2008 H5 |
| 691 | Spacewatch 0.9m telescope in Arizona, 8 in MPEC 2008-L46 -- 2008 LC, 2008 KQ, 2008 KN11, 2008 GA110, 2004 TB18, 89958, 86878, 85628 |
| 291 | Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-L46 -- 2008 KZ5 |
| F85 | Tiki Obs. in Tahiti, 3 in MPEC 2008-L46 -- 2008 LG2, 2008 JT35, 2008 JA8 |
| For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page. | |
Impact Risk Monitoring on 11 June '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 LW8 | JPL Sentry | 1046 | 2011-2077 | 4 | 5.5e-10 | -4.75 | -4.84 | 0 | JPL: "Analysis based on 25 observations spanning 1.0455 days (2008-Jun-09.41357 to 2008-Jun-10.45902)." Diameter approximately 1.100 km. from mean, weighted H=17.4. |
| NEODyS | 1045 | R E M O V E D | - | ||||||
| 2008 LG2 | JPL Sentry | 1046 | 2038-2105 | 19 | 9.7e-06 | -5.50 | -5.92 | 0 | JPL: "Analysis based on 77 observations spanning 7.6824 days (2008-Jun-03.31737 to 2008-Jun-10.99976)." Diameter approximately 0.029 km. from mean, weighted H=25.4. |
| 2008 LD | JPL Sentry | 1046 | 2049-2108 | 45 | 4.2e-05 | -6.62 | -7.43 | 0 | JPL: "Analysis based on 26 observations spanning 8.0323 days (2008-Jun-02.29145 to 2008-Jun-10.32379)." Diameter approximately 0.006 km. from mean, weighted H=28.9. |
| 2008 LA | NEODyS | 1049 | 2027-2088 | 26 | 6.03e-05 | -3.48 | -3.86 | 0 | NEODyS: "Based on 51 optical observations (of which 0 are rejected as outliers) from 2008/06/01.170 to 2008/06/10.936." |
| JPL Sentry | 1046 | 2027-2103 | 25 | 6.0e-05 | -3.48 | -3.85 | 0 | JPL: "Analysis based on 51 observations spanning 9.7663 days (2008-Jun-01.16922 to 2008-Jun-10.93552)." Diameter approximately 0.076 km. from mean, weighted H=23.2. | |
| 2008 KN11 | NEODyS | 1047 | 2037-2051 | 5 | 6.33e-07 | -5.12 | -5.39 | 0 | NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/11.014." |
| JPL Sentry | 1046 | 2037-2046 | 4 | 6.4e-07 | -5.12 | -5.42 | 0 | JPL: "Analysis based on 83 observations spanning 11.679 days (2008-May-30.33435 to 2008-Jun-11.0135)." Diameter approximately 0.077 km. from mean, weighted H=23.2. | |
| 2008 HU4 | NEODyS | 1048 | 2071-2090 | 6 | 4.01e-06 | -7.34 | -7.73 | 0 | NEODyS: "Based on 72 optical observations (of which 0 are rejected as outliers) from 2008/04/30.325 to 2008/06/10.262." |
| JPL Sentry | 1046 | 2075-2079 | 2 | 8.4e-07 | -8.01 | -8.14 | 0 | JPL: "Analysis based on 72 observations spanning 40.937 days (2008-Apr-30.32444 to 2008-Jun-10.26128)." Diameter approximately 0.008 km. from mean, weighted H=28.2. | |
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 11 June '08
Times are UTC for when items were noted or added by The Tracking News.
| 0129 6/12 | Grabbed MPEC 2008-L47 - Comets C/2008 H4, 2008 H5, 2008 H6, 2008 H7, 2008 H8 (SOHO) - see above Grabbed MPEC 2008-L48 - Comets C/2008 J7, 2008 J8, 2008 J9 (SOHO) - see above |
| 1049 | Noted that NEODyS has updated its 2008 LA risk assessment - see above |
| 1048 | Noted that NEODyS has updated its 2008 HU4 risk assessment - see above |
| 1047 | Noted that NEODyS has updated its 2008 KN11 risk assessment - see above |
| 1045 | Noted that JPL Sentry has reposted 2008 HU4 as an impact risk - see above Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above Noted that JPL Sentry has updated its 2008 LA risk assessment - see above Noted that JPL Sentry has updated its 2008 LD risk assessment - see above Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above Noted that JPL Sentry has updated its 2008 LW8 risk assessment - see above Noted that NEODyS has removed 2008 LW8 as an impact risk - see above Grabbed MPEC 2008-L46 - Daily Orbit Update - see above |
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