Section of

Please check out A/CC's new multipage version of Timeline & Statistics for Earth's Busy Neighborhood. The previous version had grown into a 127Kb file even without adding discovery, last-observation, and closest approach times and without expanding the timeline backwards. This new version adds all those details plus a chart (excerpt shown) and tables with null-activity periods, Earth and lunar closest approaches, and credit for those who most often catch the last observation of objects.


Contents  on 16 June '08

Resources:

The latest A/CC news is available via framed access, RSS news feed 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 16 June '08

The MPC's NEO Confirmation Page has 1 listing: 1 updated

When last checked at 2357 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had one updated listing. This was a "one nighter." So far The Tracking News has counted a total of four 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 16 June '08

Minor Planet Electronic Circulars

As of last check at 2357 UTC, there have been eight MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2008-M08 - "16:12 UT" - 2008 LW16


MPEC 2008-M07 - "14:21 UT" - 2008 LV16


<< DOU on 16 June '08 >>  MPEC 2008-M06 - "06:08 UT" - Daily Orbit Update


MPEC 2008-M05 - "01:38 UT" - Observations of Comets


MPEC 2008-M04 - "01:31 UT" - Comet C/2008 J6 (Hill)


MPEC 2008-M03 - "01:28 UT" - Comet P/2008 J2 (Beshore)


MPEC 2008-M02 - "01:25 UT" - Comet C/2008 J1 (Boattini)


MPEC 2008-M01 - "01:11 UT" - Comet C/2008 H1 (LINEAR)

Observers  on 16 June '08

A total of 48 observing facilities appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 9 in MPECs 2008-M02, 2008-M03, 2008-M04 & 2008-M05 -- C/2008 J6, P/2008 J2, C/2008 J1, C/2007 N3, C/2007 G1, C/2006 W3, C/2006 OF2, 26P, 15P
J24Altamira Obs. in Spain, 3 in MPECs 2008-M03 & 2008-M05 -- P/2008 J2, C/2007 G1, C/2005 L3
B37Ametlla del Valles Obs. in Spain, 3 in MPEC 2008-M05 -- C/2005 L3, C/2002 VQ94, 68P
H55Astronomical Research Obs. (ARO) in Illinois, 12 in MPEC 2008-M06 -- 2008 LQ16, 2008 LG2, 2008 KW2, 2008 KN11, 2008 JQ14, 2008 HD3, 2008 GR3, 2008 GH110, 2008 EX84, 2008 DY, 2008 AF32, 2007 XH16
J51Atlante Obs. in the Canary Islands, 7 in MPECs 2008-M02, 2008-M03, 2008-M04 & 2008-M05 -- C/2008 J6, P/2008 J2, C/2008 J1, C/2007 N3, C/2005 L3, 68P, 6P
A81Balzaretto Obs. in Italy, 3 in MPECs 2008-M05 & 2008-M06 -- C/2007 G1, 35107, 137170
300Bisei Spaceguard Center in Japan, 11 in MPECs 2008-M01, 2008-M02, 2008-M04, 2008-M05 & 2008-M06 -- 2008 JJ, C/2008 J6, C/2008 J1, 2008 HG, 2008 HE, C/2008 H1, 2008 GD110, 2008 ED69, C/2008 C1, 2007 VR183, 2005 NB7
215Buchloe Obs. in Germany, 1 in MPEC 2008-M05 -- C/2007 T5
235CAST Obs. in Italy, 4 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2007 G1, C/2005 L3, 68P
B20Carmelita Obs. in Spain, 2 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2007 G1
703Catalina Sky Survey (CSS) in Arizona, 5 in MPECs 2008-M02, 2008-M05, 2008-M06, 2008-M07 & 2008-M08 -- 2008 LW16, 2008 LV16, C/2008 J1, 154278, 7P
A77Chante-Perdrix Obs. in France, 1 in MPEC 2008-M05 -- C/2007 T5
448Desert Moon Obs. in New Mexico, 5 in MPEC 2008-M06 -- 2008 LW8, 2008 LH2, 2008 JQ14, 2005 TG45, 136923
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2008-M03 -- P/2008 J2
F656Richard Miles in England via Faulkes Telescope North in Hawaii, 1 in MPEC 2008-M08 -- 2008 LW16
J77Golden Hill Obs. in England, 1 in MPEC 2008-M07 -- 2008 LV16
D88Hiratsuka Obs., 2 in MPEC 2008-M05 -- C/2007 N3, 26P
750Hobbs Obs. in Wisconsin, 1 in MPEC 2008-M05 -- C/2006 W3
415Kambah Obs. in the Australian Capital Territory, 3 in MPEC 2008-M05 -- C/2008 A1, C/2006 U6, 186P
704LINEAR in New Mexico, 4 in MPECs 2008-M02, 2008-M05 & 2008-M06 -- C/2008 J1, 2005 NB7, C/2005 L3, 7P
J87La Canada Obs. in Spain, 2 in MPEC 2008-M05 -- C/2005 L3, 68P
J64La Mata Obs. in Spain, 2 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2005 L3
J38La Vara Obs. in Spain, 2 in MPEC 2008-M05 -- C/2007 B2, 46P
J40Malaga Obs. in Spain, 2 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, 6P
118Modra Obs. in Slovakia, 1 in MPEC 2008-M04 -- C/2008 J6
J46Montana Blanca Obs. in the Canary Islands, 1 in MPEC 2008-M05 -- C/2005 L3
J45Montana Cabreja Obs. in the Canary Islands, 2 in MPECs 2008-M02 & 2008-M03 -- P/2008 J2, C/2008 J1
213Montcabre Obs. in Spain, 2 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2005 L3
945Monte Deva Obs. in Spain, 2 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2005 L3
900Moriyama Obs. in Japan, 12 in MPECs 2008-M01, 2008-M02, 2008-M03, 2008-M04 & 2008-M05 -- C/2008 J6, P/2008 J2, C/2008 J1, C/2008 H1, C/2007 N3, C/2007 G1, C/2006 OF2, C/2005 S4, C/2005 L3, 26P, 15P, 6P
474Mt. John Obs. in New Zealand, 4 in MPEC 2008-M05 -- C/2008 A1, C/2007 W1, C/2006 XA1, C/2006 U6
J93Mt. Tuffley Obs. in England, 1 in MPEC 2008-M02 -- C/2008 J1
J47Nazaret Obs. in Spain, 11 in MPECs 2008-M01, 2008-M02, 2008-M03 & 2008-M05 -- P/2008 J2, C/2008 J1, C/2008 H1, C/2005 S4, C/2005 L3, 99P, 68P, 46P, 26P, 7P, 6P
423North Ryde Obs. in New South Wales, 2 in MPEC 2008-M05 -- C/2008 E3, 186P
B49Paus Obs. in Spain, 4 in MPECs 2008-M02, 2008-M04 & 2008-M05 -- C/2008 J6, C/2008 J1, 26P, 6P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 4 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2005 S4, 26P, 6P
H06RAS Obs. Mayhill in New Mexico, 2 in MPECs 2008-M02 & 2008-M04 -- C/2008 J6, C/2008 J1
473Remanzacco Obs. in Italy, 3 in MPEC 2008-M05 -- C/2007 W1, C/2005 L3, 6P
939Rodeno Obs. in Spain, 4 in MPECs 2008-M02 & 2008-M05 -- C/2008 J1, C/2007 N3, C/2007 B2, C/2005 L3
E12Siding Spring Survey (SSS) in New South Wales, 2 in MPEC 2008-M06 -- 90367, 153792
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2008-M05 -- 68P
291Spacewatch 1.8m telescope in Arizona, 1 in MPEC 2008-M05 -- P/2005 SB216
A97Stammersdorf Obs. in Austria, 1 in MPEC 2008-M02 -- C/2008 J1
6735Jim Young via Table Mtn. Obs. in southern California, 2 in MPECs 2008-M06 & 2008-M07 -- 2008 LV16, 2008 HB38
F85Tiki Obs. in Tahiti, 2 in MPEC 2008-M06 -- 2006 YD, 2005 LY19
J70Vega del Thader Obs. in Spain, 1 in MPEC 2008-M05 -- C/2005 L3
198Wildberg Obs. in Germany, 1 in MPEC 2008-M05 -- C/2005 L3
367Yatsuka Obs., 2 in MPEC 2008-M05 -- C/2006 OF2, 15P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 June '08

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL at 2357 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
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 LW16JPL Sentry19362017-21051359.7e-07-2.91-3.260JPL: "Analysis based on 11 observations spanning 1.2157 days (2008-Jun-15.38141 to 2008-Jun-16.59712)." Diameter approximately 0.410 km. from mean, weighted H=19.6.
2008 LV16JPL Sentry16402011-21073031.4e-06-2.76-3.550JPL: "Analysis based on 15 observations spanning 1.1020 days (2008-Jun-15.3798 to 2008-Jun-16.48183)." Diameter approximately 0.388 km. from mean, weighted H=19.7.
2008 LG2NEODyS14132058-2090123.29e-06-5.96-6.310NEODyS: "Based on 94 optical observations (of which 0 are rejected as outliers) from 2008/06/03.318 to 2008/06/15.205."
JPL Sentry14112038-2105144.8e-06-5.83-6.300JPL: "Analysis based on 94 observations spanning 11.886 days (2008-Jun-03.31737 to 2008-Jun-15.203848)." Diameter approximately 0.029 km. from mean, weighted H=25.3.
2008 KN11NEODyS14122037-204652.3e-07-5.59-5.960NEODyS: "Based on 103 optical observations (of which 0 are rejected as outliers) from 2008/05/30.335 to 2008/06/15.220."
JPL Sentry14112037-204632.4e-07-5.59-5.910JPL: "Analysis based on 103 observations spanning 15.885 days (2008-May-30.33435 to 2008-Jun-15.219052)." Diameter approximately 0.076 km. from mean, weighted H=23.2.

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 16 June '08

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

1936Noted that JPL Sentry has posted 2008 LW16 as an impact risk - see above
1640Noted that JPL Sentry has posted 2008 LV16 as an impact risk - see above
Grabbed MPEC 2008-M08 - 2008 LW16 - see above
1555Grabbed MPEC 2008-M07 - 2008 LV16 - see above
1413Noted that NEODyS has updated its 2008 LG2 risk assessment - see above
1412Noted that NEODyS has updated its 2008 KN11 risk assessment - see above
1411Noted that JPL Sentry has updated its 2008 KN11 risk assessment - see above
Noted that JPL Sentry has updated its 2008 LG2 risk assessment - see above
Grabbed MPEC 2008-M06 - Daily Orbit Update - see above
0146Grabbed MPEC 2008-M01 - Comet C/2008 H1 (LINEAR) - see above
Grabbed MPEC 2008-M02 - Comet C/2008 J1 (Boattini) - see above
Grabbed MPEC 2008-M03 - Comet P/2008 J2 (Beshore) - see above
Grabbed MPEC 2008-M04 - Comet C/2008 J6 (Hill) - see above
Grabbed MPEC 2008-M05 - Observations of Comets - see above