Contents  on 14 May '12

Asteroid/Comet Connection (A/CC) 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.

Traffic Report  on 14 May '12

One object reported inside ten LD

One asteroid is reported to be within ten lunar distances (LD) of Earth today. Intruder 2012 JU exits Earth's Hill sphere, traveling from 1.43 to 4.34 LD.

Approaching Earth next, 2010 KK37 is calculated to arrive inside ten LD tomorrow with an Earth approach uncertainty of +/- 1.160 days. After that, no objects are known to be coming into the ten-LD "bubble" until November.

This report was generated at 1323 UTC with follow-up in today's DOU MPEC for 2012 JU and departed 2012 HG2 as well as distant 2007 HA.


Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. Earth's Hill sphere (of gravitational influence) is estimated to extend out to around 3.89 LD. Object distances are interpreted by A/CC from JPL Horizons data. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 14 May '12

The MPC's NEO Confirmation Page has 20 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 20 objects listed. Of these, sixteen were "one nighters." So far The Tracking News has counted a total of 37 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 14 May '12

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been eleven MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-J48 - "22:25 UT" - 2012 JU4


MPEC 2012-J47 - "19:18 UT" - 2012 JR4


MPEC 2012-J46 - "19:17 UT" - 2012 JQ4


MPEC 2012-J45 - "19:15 UT" - 2012 JP4


MPEC 2012-J44 - "19:09 UT" - 2012 JO4


MPEC 2012-J43 - "19:07 UT" - 2012 JN4


MPEC 2012-J42 - "19:05 UT" - 2012 JM4


MPEC 2012-J41 - "16:27 UT" - 2010 WJ


MPEC 2012-J40 - "15:39 UT" - 2009 ML1


<< DOU on 14 May '12 >>  MPEC 2012-J39 - "06:02 UT" - Daily Orbit Update


MPEC 2012-J38 - "03:34 UT" - 2010 LU134

Observers  on 14 May '12

A total of 30 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2012-J42 & 2012-J46 -- 2012 JQ4, 2012 JM4
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2012-J39, 2012-J42, 2012-J43, 2012-J44, 2012-J45 & 2012-J46 -- 2012 JU, 2012 JQ4, 2012 JQ, 2012 JP4, 2012 JO4, 2012 JN4, 2012 JM4, 2012 HZ33, 2012 HN8, 2012 HL, 2012 HK31, 2012 HJ1, 2008 AF32
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-J44 -- 2012 JO4
B96Brixiis Obs. in Belgium, 1 in MPEC 2012-J39 -- 2012 HN40
160Castelmartini Obs. in Italy, 6 in MPEC 2012-J39 -- 2011 WV134, 1994 NK, 326732, 322966, 312473, 141018
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2012-J39, 2012-J43, 2012-J44 & 2012-J46 -- 2012 JQ4, 2012 JO4, 2012 JN4, 2012 HJ1, 2011 YV15, 2004 FF29, 2003 WH166, 1999 VP6, 1994 NK, 66391, 241370, 189008, 5836
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 14 in MPECs 2012-J39, 2012-J40, 2012-J41, 2012-J42, 2012-J43 & 2012-J46 -- 2012 JQ4, 2012 JQ, 2012 JN4, 2012 JM4, 2012 HF31, 2011 XO3, 2010 WJ, 2009 ML1, 2004 XK35, 2004 JA, 2003 UD8, 2002 VC92, 2002 SV, 1995 LG
I39Cruz del Sur Obs. in Argentina, 1 in MPEC 2012-J46 -- 2012 JQ4
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2012-J46 -- 2012 JQ4
I48El Catalejo Obs., 3 in MPECs 2012-J42, 2012-J44 & 2012-J46 -- 2012 JQ4, 2012 JO4, 2012 JM4
E100Tim Lister in southern California via Faulkes Telescope South in New South Wales, 1 in MPEC 2012-J42 -- 2012 JM4
157Frasso Sabino Obs. in Italy, 5 in MPECs 2012-J39 & 2012-J44 -- 2012 JO4, 2012 HN40, 2012 HG31, 2012 GX11, 2001 QG142
J95Great Shefford Obs. in England, 5 in MPECs 2012-J43, 2012-J44, 2012-J45, 2012-J46 & 2012-J47 -- 2012 JR4, 2012 JQ4, 2012 JP4, 2012 JO4, 2012 JN4
J75La Sagra Obs. in Spain, 1 in MPEC 2012-J46 -- 2012 JQ4
5682David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2012-J38 -- 2010 LU134
932McCarthy Obs. in Connecticut, 1 in MPEC 2012-J44 -- 2012 JO4
G96Mt. Lemmon Survey (MLS) in Arizona, 14 in MPECs 2012-J39, 2012-J43, 2012-J44, 2012-J45, 2012-J47 & 2012-J48 -- 2012 JU4, 2012 JR4, 2012 JP4, 2012 JO4, 2012 JN4, 2012 HN2, 2012 HJ1, 2012 HB34, 2012 DZ32, 1998 OK1, 85628, 302830, 189008, 154715
A13Naef Obs. in Switzerland, 1 in MPEC 2012-J39 -- 2008 HW1
A24New Millennium Obs. in Italy, 1 in MPEC 2012-J39 -- 2010 KX7
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2012-J39 -- 2006 VY13
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 5 in MPECs 2012-J39, 2012-J42 & 2012-J43 -- 2012 JU, 2012 JQ, 2012 JN4, 2012 JM4, 2012 HN40
854Sabino Canyon Obs. in Arizona, 2 in MPECs 2012-J44 & 2012-J46 -- 2012 JQ4, 2012 JO4
H36Sandlot Obs. in Kansas, 6 in MPECs 2012-J39, 2012-J42, 2012-J43, 2012-J44, 2012-J46 & 2012-J47 -- 2012 JR4, 2012 JQ4, 2012 JO4, 2012 JN4, 2012 JM4, 2012 HK31
204Schiaparelli Obs. in Italy, 3 in MPECs 2012-J39, 2012-J43 & 2012-J44 -- 2012 JO4, 2012 JN4, 2012 HN40
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2012-J42, 2012-J43, 2012-J44 & 2012-J46 -- 2012 JQ4, 2012 JO4, 2012 JN4, 2012 JM4
510Siegen Obs. in Germany, 1 in MPEC 2012-J46 -- 2012 JQ4
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2012-J39 -- 162082
291Spacewatch 1.8m telescope in Arizona, 17 in MPECs 2012-J39, 2012-J42, 2012-J44, 2012-J45, 2012-J47 & 2012-J48 -- 2012 JU4, 2012 JR4, 2012 JP4, 2012 JO4, 2012 JM4, 2012 HO2, 2012 HH8, 2012 HG2, 2012 HB34, 2012 HA2, 2012 GV11, 2012 GB18, 2012 EL5, 2010 DP, 2009 TK12, 2007 HA, 2001 GT2
I93St. Pardon de Conques Obs. in France, 3 in MPECs 2012-J43, 2012-J44 & 2012-J46 -- 2012 JQ4, 2012 JO4, 2012 JN4
C36Starry Wanderer Obs., 1 in MPEC 2012-J39 -- 2011 WV134
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 May '12

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 and JPL at 2306 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.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON2 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
2012 HG2JPL Sentry13182053-205682.3e-05-5.74-5.970JPL: "Analysis based on 161 observations spanning 22.966 days (2012-Apr-20.37147 to 2012-May-13.33758)." Diameter approximately 0.014 km. from mean, weighted H=27.0.
NEODyS13182053-20912511.16e-03-4.15-4.890NEODyS: "Based on 158 optical observations (of which 9 are rejected as outliers) from 2012-04-20.372 to 2012-05-13.338."
2008 PG1JPL Sentry1645R E M O V E D-

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 14 May '12

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

2306Grabbed MPEC 2012-J42 - 2012 JM4 - see above
Grabbed MPEC 2012-J43 - 2012 JN4 - see above
Grabbed MPEC 2012-J44 - 2012 JO4 - see above
Grabbed MPEC 2012-J45 - 2012 JP4 - see above
Grabbed MPEC 2012-J46 - 2012 JQ4 - see above
Grabbed MPEC 2012-J47 - 2012 JR4 - see above
Grabbed MPEC 2012-J48 - 2012 JU4 - see above
1645Noted that JPL Sentry has removed 2008 PG1 as an impact risk - see above
Grabbed MPEC 2012-J40 - 2009 ML1 - see above
Grabbed MPEC 2012-J41 - 2010 WJ - see above
1323Generated Traffic Report
1318Noted that JPL Sentry has updated its 2012 HG2 risk assessment - see above
Noted that NEODyS has updated its 2012 HG2 risk assessment - see above
Grabbed MPEC 2012-J39 - Daily Orbit Update - see above
0346Grabbed MPEC 2012-J38 - 2010 LU134 - see above