2012-06-14 Tracking News

Contents on 14 June '12

Traffic Report -- one object
IAU Minor Planet Center
- NEOCP Activity -- 13 listings
- New MPECs -- four MPECs
Observers -- 20 observers
Impact Risk Monitoring -- one object
Chronology

Asteroid/Comet Connection (A/CC) Resources:

Consolidated Risk Tables - the CRT page (archive)
Of 447 risk-listed objects, 15 have had news in the last 31 days. Updated at 1534 UTC on 14 June.
Ephemerides for risk-rated & nearby objects + potential mission destinations
News image catalog
News old archive & Small Objects Archive
Object Links - mainly for radar targets & close passers - updated 28 May
Observing Campaigns

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.

Traffic Report on 14 June '12

One object reported inside ten LD

One asteroid is reported passing inside ten lunar distances (LD) from Earth today. 2012 LT is outbound from 6.99 to 8.32 LD. Coming our way next, 2012 LU arrives inside ten LD on June 16th.

This report was generated at 1536 UTC with follow-up in today's DOU MPEC for 2012 LU, 2012 LT, and 2012 LA.

Notes: Ten times the distance to the Moon (ten LD) has no astronomical significance but is a useful reporting boundary. 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 June '12

The MPC's NEO Confirmation Page has 13 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had thirteen objects listed. Of these, nine were "one nighters." So far The Tracking News has counted a total of 34 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 June '12

Minor Planet Electronic Circulars

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

MPEC 2012-L37 time-stamped "06:02 UT" - Daily Orbit Update - see below
MPEC 2012-L38 time-stamped "14:25 UT" - 2012 LQ7 - see below
MPEC 2012-L39 time-stamped "22:44 UT" - 2012 LT7 - see below
MPEC 2012-L40 time-stamped "22:46 UT" - 2012 LU7

MPEC 2012-L40 - "22:46 UT" - 2012 LU7

K12L07U 2012 LU7 (H=18.8 ~589m) from Pan-STARRS 1 (PS1) (June 12.50-53p3), the Spacewatch 1.8m telescope (June 13.30-31p2), Astronomical Research Obs. Westfield (June 13.35-36p4), Sandlot Obs. (June 13.35-36p3), Terskol Obs. (June 13.91-92p3), St. Pardon de Conques Obs. (June 13.98-02p4), Magdalena Ridge Obs. (MRO) (June 14.35-37p4), and the SZTE Asteroid Program (June 14.88-89p4)

MPEC 2012-L39 - "22:44 UT" - 2012 LT7

K12L07T 2012 LT7 (i=42.0°, q=0.260 AU, H=19.0 ~537m) from PS1 (June 12.46-49p4), St. Pardon de Conques Obs. (June 13.95-96p3), Terskol Obs. (June 13.99-00p3), Great Shefford Obs. (June 14.00-01p3), Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) (June 14.21-22p3), MRO (June 14.28-30p4), Tim Lister via Faulkes Telescope North (June 14.59-60p12), and Naef Obs. (June 14.90-93p3)

MPEC 2012-L38 - "14:25 UT" - 2012 LQ7

K12L07Q 2012 LQ7 (small asteroid, H=24.2 ~49m) from PS1 (June 13.33-38p4), MRO (June 14.23-25p4), and Lister/Faulkes North (June 14.34-35p3)

<< DOU on 14 June '12 >> MPEC 2012-L37 - "06:02 UT" - Daily Orbit Update

Observations of risk-listed objects
K12L01R 2012 LR1 (i=42.3°, arc=5 days, H=20.5 ~269m) from ARO Westfield (June 13.30p3), the Mt. Lemmon Survey (MLS) (June 13.30-32p3), and Spacewatch 1.8m (June 14.21p3)
A1955 101955 1999 RQ36 (PMD) from MRO (June 14.19-22p4)
Observations of recently (no longer) risk-listed objects
K12K11J 2012 KJ11 (arc=28 days, H=16.6 ~1.62 km) from MRO (June 14.15-17p4)
Observations of close-passing objects
K12L00U 2012 LU (arc=4 days, H=25.0 ~34m) from Schiaparelli Obs. (June 12.97-99p3), ARO Westfield (June 13.21p3), and PS1 (June 13.33-38p4)
K12L00T 2012 LT (arc=3 days, H=25.9 ~22m) from the Siding Spring Survey (SSS) (June 12.48p4)
K12L00A 2012 LA (arc=12 days, H=27.5 ~11m, PMD candidate) from ARO Westfield (June 13.26-29p3 at V=22.1-5)
Observation campaigns (radar support, potential mission destinations)
W9437 329437 2002 OA22 (PMD) from the Catalina Sky Survey (CSS) (June 13.30-32p4) and DGRO-RH (June 14.16p4)
-- Potential mission destinations list & ephemerides + NHATS
Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
K12L01P 2012 LP1 (arc=3 days, H=23.4 ~71m) from ARO Westfield (June 13.14p3)
K12F01D 2012 FD1 (arc=92 days, H=22.8 ~93m) from ARO Westfield (June 13.35-37p3 at V=22.1-7)
K12L01D 2012 LD1 (arc=4 days, H=21.9 ~141m) from Schiaparelli Obs. (June 12.95-96p3), ARO Westfield (June 13.11p3), and Petit Jean Mtn. South Obs. (PJMSO) (June 13.26-28p9)
Observations of other asteroidal objects
K12L02K 2012 LK2 (i=38.2°, q=0.351 AU, Q=4.344 AU, arc=3 days, H=17.1 ~1.29 km) from Spacewatch 1.8m (June 13.40p2)
K12L01Z 2012 LZ1 (Q=4.060 AU, arc=3 days, H=19.7 ~389m) from SSS (June 12.47p4, 12.83p2 & 13.54p4) and Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (June 14.08p4)
K12L01C 2012 LC1 (arc=6 days, H=16.1 ~2.04 km, q=0.475 AU) from ARO Westfield (June 13.10-11p4) and DGRO-RH (June 14.15p4)
K12K45M 2012 KM45 (arc=15 days, H=18.6 ~645m) from ARO Westfield (June 13.12-13p3)
K12K06C 2012 KC6 (arc=26 days, H=21.7 ~155m) from Spacewatch 1.8m (June 13.39-40p3)
K12K04A 2012 KA4 (q=0.242 AU, arc=28 days, H=21.2 ~195m) from Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) (June 14.18-20p3)
K12J16B 2012 JB16 (arc=30 days, H=19.7 ~389m) from ARO Westfield (June 13.15-16p3)
K12H31G 2012 HG31 (arc=59 days, H=18.9 ~562m) from PJMSO (June 13.23-24p6)
K12F01Q 2012 FQ1 (Q=4.209 AU, arc=90 days, H=19.1 ~513m) from Trueblood/KPNO (June 14.16-17p3)
K12D61H 2012 DH61 (arc=107 days, H=19.1 ~513m) from DGRO-RH (June 14.17p3)
K12D30U 2012 DU30 (arc=2 opp, H=18.2 ~776m) from PS1 (June 12.40-43p4)
K11WD4V 2011 WV134 (Q=4.676 AU, arc=3 opp, H=17.1 ~1.29 km) from PJMSO (June 13.32p5)
K09N00H 2009 NH (arc=2 opp, H=18.7 ~616m) from the Spacewatch 0.9m telescope (June 13.19-27p3) and PS1 (June 13.35-38p3)
K09K22J 2009 KJ22 (arc=2 opp, H=20.0 ~339m) from Spacewatch 0.9m (June 13.18-26p3)
K08A04F 2008 AF4 (arc=5 opp, H=19.7 ~389m) from Spacewatch 1.8m (June 13.41p2)
K07V07X 2007 VX7 (arc=2 opp, H=19.5 ~426m) from SSS (June 12.53p1) and Spacewatch 0.9m (June 13.19-27p3)
K07M20T 2007 MT20 (arc=3 opp, H=18.7 ~616m) from Schiaparelli Obs. (June 12.99-01p3) and Naef Obs. (June 13.88-91p4)
K07M13M 2007 MM13 (i=38.2°, arc=4 opp, H=17.7 ~977m) from Schiaparelli Obs. (June 13.05-06p3)
K06J25Y 2006 JY25 (arc=4 opp, H=20.4 ~282m) from Schiaparelli Obs. (June 12.92-93p3)
K04C00L 2004 CL (arc=6 opp, H=20.6 ~257m) from St. Pardon de Conques Obs. (June 14.05-07p4)
K03B35Q 2003 BQ35 (arc=4 opp, H=20.1 ~323m) from PS1 (June 12.55-56p2)
J98F09M 1998 FM9 (arc=3 opp, H=19.4 ~446m) from PS1 (June 12.55-56p2)
R6732 276732 2004 EV9 from ARO Westfield (June 13.17-20p3 at V=21.7-22.4)
G2854 162854 2001 DE47 from Naef Obs. (June 13.90-92p2)
D6900 136900 1998 HL49 from Spacewatch 0.9m (June 13.19-27p3)
85184 85184 1991 JG1 from PS1 (June 12.46-49p4 & 13.43-44p2)
53110 53110 1999 AR7 from PS1 (June 13.34-39p3)
27002 27002 1998 DV9 from PS1 (June 13.34-38p4)
24445 24445 2000 PM8 from PS1 (June 12.32-33p2)
03352 3352 McAuliffe (1981 CW) from PS1 (June 13.27-28p2)

Observers on 14 June '12

A total of 20 observers appear in today's MPECs.

Code	Observer / observatory
`H21`	Astronomical Research Obs. Westfield in Illinois, 11 in MPECs 2012-L37 & 2012-L40 -- 2012 LU7, 2012 LU, 2012 LR1, 2012 LP1, 2012 LD1, 2012 LC1, 2012 LA, 2012 KM45, 2012 JB16, 2012 FD1, 276732
`703`	Catalina Sky Survey in Arizona, 1 in MPEC 2012-L37 -- 329437
`807\|`	Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2012-L37 -- 2012 LZ1
`G48`	Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 4 in MPECs 2012-L37 & 2012-L39 -- 2012 LT7, 2012 LC1, 2012 DH61, 329437
`F65%`	Tim Lister in southern California via Faulkes Telescope North in Hawaii, 2 in MPECs 2012-L38 & 2012-L39 -- 2012 LT7, 2012 LQ7
`J95`	Great Shefford Obs. in England, 1 in MPEC 2012-L39 -- 2012 LT7
`695]`	Mark Trueblood via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPEC 2012-L37 -- 2012 KA4, 2012 FQ1
`H01`	Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2012-L37, 2012-L38, 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LT7, 2012 LQ7, 2012 KJ11, 101955
`G96`	Mt. Lemmon Survey in Arizona, 1 in MPEC 2012-L37 -- 2012 LR1
`A13`	Naef Obs. in Switzerland, 3 in MPECs 2012-L37 & 2012-L39 -- 2012 LT7, 2007 MT20, 162854
`F51`	Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2012-L37, 2012-L38, 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LU, 2012 LT7, 2012 LQ7, 2012 DU30, 2009 NH, 2003 BQ35, 1998 FM9, 85184, 53110, 27002, 24445, 3352
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 3 in MPEC 2012-L37 -- 2012 LD1, 2012 HG31, 2011 WV134
`461`	SZTE Asteroid Program in Hungary, 1 in MPEC 2012-L40 -- 2012 LU7
`H36`	Sandlot Obs. in Kansas, 1 in MPEC 2012-L40 -- 2012 LU7
`204`	Schiaparelli Obs. in Italy, 5 in MPEC 2012-L37 -- 2012 LU, 2012 LD1, 2007 MT20, 2007 MM13, 2006 JY25
`E12`	Siding Spring Survey (SSS) in New South Wales, 3 in MPEC 2012-L37 -- 2012 LZ1, 2012 LT, 2007 VX7
`691`	Spacewatch 0.9m telescope in Arizona, 4 in MPEC 2012-L37 -- 2009 NH, 2009 KJ22, 2007 VX7, 136900
`291`	Spacewatch 1.8m telescope in Arizona, 5 in MPECs 2012-L37 & 2012-L40 -- 2012 LU7, 2012 LR1, 2012 LK2, 2012 KC6, 2008 AF4
`I93`	St. Pardon de Conques Obs. in France, 3 in MPECs 2012-L37, 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LT7, 2004 CL
`B18`	Terskol Obs. in Russia, 2 in MPECs 2012-L39 & 2012-L40 -- 2012 LU7, 2012 LT7

For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring on 14 June '12

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2359 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 LR1	JPL Sentry	1532	2034-2106	8	5.2e-07	-3.79	-4.00	0	JPL: "Analysis based on 47 observations spanning 4.8077 days (2012-Jun-09.40456 to 2012-Jun-14.21226)." Diameter approximately 0.280 km. from mean, weighted H=20.4.
2012 LR1	NEODyS	1532	2057-2089	5	9.82e-07	-3.48	-3.58	0	NEODyS: "Based on 47 optical observations (of which 0 are rejected as outliers) from 2012-06-09.405 to 2012-06-14.213."

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 June '12

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

2310	Grabbed MPEC 2012-L39 - 2012 LT7 - see above Grabbed MPEC 2012-L40 - 2012 LU7 - see above
1536	Generated Traffic Report
1532	Noted that JPL Sentry has updated its 2012 LR1 risk assessment - see above Noted that NEODyS has updated its 2012 LR1 risk assessment - see above Grabbed MPEC 2012-L37 - Daily Orbit Update - see above Grabbed MPEC 2012-L38 - 2012 LQ7 - see above

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