Contents  on 3 January '12

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NEOCP Activity  on 3 January '12

The MPC's NEO Confirmation Page has 16 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had sixteen objects listed. Of these, six were "one nighters." The Tracking News counted a total of 56 listings on the NEOCP on this day.

New MPECs  on 3 January '12

Minor Planet Electronic Circulars

There were 21 MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2012-A24 - "23:52 UT" - 2012 AE1


MPEC 2012-A23 - "23:09 UT" - 2010 CL19


MPEC 2012-A22 - "18:31 UT" - 2012 AZ


MPEC 2012-A21 - "18:16 UT" - 2012 AY


MPEC 2012-A20 - "18:13 UT" - 2012 AX


MPEC 2012-A19 - "18:11 UT" - 2012 AW


MPEC 2012-A18 - "18:09 UT" - 2011 YM63


MPEC 2012-A17 - "18:07 UT" - 2011 YL63


<< DOU on 3 Jan. '12 >>  MPEC 2012-A16 - "06:04 UT" - Daily Orbit Update


MPEC 2012-A15 - "01:18 UT" - 2012 AQ


MPEC 2012-A14 - "01:16 UT" - 2011 YC63


MPEC 2012-A13 - "01:14 UT" - 2011 YB63


MPEC 2012-A12 - "01:06 UT" - 2011 YA63


MPEC 2012-A11 - "01:04 UT" - 2011 YZ62


MPEC 2012-A10 - "01:02 UT" - 2011 YY62


MPEC 2012-A09 - "01:00 UT" - 2011 YX62


MPEC 2012-A08 - "00:58 UT" - 2011 YW62


MPEC 2012-A07 - "00:56 UT" - 2011 YV62


MPEC 2012-A06 - "00:54 UT" - 2011 YU62


MPEC 2012-A05 - "00:51 UT" - 2011 YT62


MPEC 2012-A04 - "00:47 UT" - 2011 YS62

Observers  on 3 January '12

A total of 38 observers appeared in this day's MPECs.

CodeObserver / observatory
J16An Carraig Obs. in Northern Ireland, 1 in MPEC 2012-A24 -- 2012 AE1
E23Arcadia Obs. in New South Wales, 1 in MPEC 2012-A06 -- 2011 YU62
H21Astronomical Research Obs. Westfield in Illinois, 7 in MPECs 2012-A10, 2012-A11, 2012-A12, 2012-A19, 2012-A21, 2012-A22 & 2012-A24 -- 2012 AZ, 2012 AY, 2012 AW, 2012 AE1, 2011 YZ62, 2011 YY62, 2011 YA63
300Bisei Spaceguard Center in Japan, 1 in MPEC 2012-A24 -- 2012 AE1
B96Brixiis Obs. in Belgium, 1 in MPEC 2012-A24 -- 2012 AE1
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2012-A04, 2012-A05, 2012-A09, 2012-A10, 2012-A16, 2012-A21, 2012-A23 & 2012-A24 -- 2012 AY, 2012 AE1, 2011 YY62, 2011 YX62, 2011 YT62, 2011 YS62, 2010 CL19, 2006 VY13, 299582, 275714, 143651, 101873, 2340
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPECs 2012-A06, 2012-A07, 2012-A10, 2012-A12, 2012-A16, 2012-A17 & 2012-A18 -- 2011 YY62, 2011 YV62, 2011 YU62, 2011 YM63, 2011 YL63, 2011 YB29, 2011 YA63, 2011 SJ68
821Cordoba Obs. Bosque Alegre Station in Argentina, 1 in MPEC 2012-A06 -- 2011 YU62
448Desert Moon Obs. in New Mexico, 8 in MPEC 2012-A16 -- 2011 YL6, 2011 YJ28, 2008 YT30, 85990, 308127, 192642, 163696, 9172
G48Doc Greiner Research Obs. Rancho Hildalgo (DGRO-RH) in New Mexico, 3 in MPECs 2012-A04, 2012-A10 & 2012-A16 -- 2011 YY62, 2011 YS62, 2011 WV134
I19El Gato Gris Obs. in Argentina, 2 in MPECs 2012-A06 & 2012-A10 -- 2011 YY62, 2011 YU62
595Farra d'Isonzo Obs. in Italy, 4 in MPECs 2012-A04, 2012-A09, 2012-A18 & 2012-A24 -- 2012 AE1, 2011 YX62, 2011 YS62, 2011 YM63
F65%Tim Lister in southern California via Faulkes Telescope North in Hawaii, 4 in MPECs 2012-A07, 2012-A11, 2012-A12 & 2012-A17 -- 2011 YZ62, 2011 YV62, 2011 YL63, 2011 YA63
J95Great Shefford Obs. in England, 6 in MPECs 2012-A04, 2012-A09, 2012-A10, 2012-A15, 2012-A19 & 2012-A23 -- 2012 AW, 2012 AQ, 2011 YY62, 2011 YX62, 2011 YS62, 2010 CL19
E16Grove Creek Obs. in New South Wales, 1 in MPEC 2012-A06 -- 2011 YU62
355Hadano Obs. in Japan, 1 in MPEC 2012-A24 -- 2012 AE1
I36Los Campitos Obs. in Argentina, 1 in MPEC 2012-A06 -- 2011 YU62
844Los Molinos Obs. in Uruguay, 1 in MPEC 2012-A06 -- 2011 YU62
B28Mandi Obs. in Italy, 3 in MPECs 2012-A04, 2012-A10 & 2012-A24 -- 2012 AE1, 2011 YY62, 2011 YS62
G96Mt. Lemmon Survey (MLS) in Arizona, 15 in MPECs 2012-A07, 2012-A08, 2012-A10, 2012-A11, 2012-A12, 2012-A13, 2012-A14, 2012-A15, 2012-A16, 2012-A17, 2012-A19, 2012-A20, 2012-A22 & 2012-A23 -- 2012 AZ, 2012 AX, 2012 AW, 2012 AQ, 2011 YZ62, 2011 YY62, 2011 YW62, 2011 YV62, 2011 YL63, 2011 YC63, 2011 YB63, 2011 YA63, 2011 LJ1, 2010 CL19, 2006 OS5
A24New Millennium Obs. in Italy, 2 in MPECs 2012-A09 & 2012-A10 -- 2011 YY62, 2011 YX62
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPEC 2012-A16 -- 2003 TJ2, 2002 AN11, 85839, 39796, 3552
B49Paus Obs. in Spain, 1 in MPEC 2012-A24 -- 2012 AE1
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 7 in MPEC 2012-A16 -- 2011 YV15, 2011 YH40, 2011 YG6, 2011 YA, 2011 XE1, 2011 WV134, 21088
H06|Hidetaka Sato in Japan via RAS Obs. Mayhill in New Mexico, 1 in MPEC 2012-A24 -- 2012 AE1
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2012-A06 -- 2011 YU62
J41Raheny Obs. in Ireland, 1 in MPEC 2012-A24 -- 2012 AE1
I20Rio Cuarto Obs. in Argentina, 9 in MPECs 2012-A06 & 2012-A16 -- 2011 YU62, 2011 WV134, 2011 OV18, 2009 AK15, 2006 VY13, 2000 CH59, 289315, 137671, 8567
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2012-A04, 2012-A06, 2012-A10 & 2012-A24 -- 2012 AE1, 2011 YY62, 2011 YU62, 2011 YS62
H36Sandlot Obs. in Kansas, 6 in MPECs 2012-A04, 2012-A06, 2012-A09, 2012-A16, 2012-A18, 2012-A21 & 2012-A24 -- 2012 AY, 2012 AE1, 2011 YX62, 2011 YU62, 2011 YS62, 2011 YM63
204Schiaparelli Obs. in Italy, 1 in MPEC 2012-A04 -- 2011 YS62
E12Siding Spring Survey (SSS) in New South Wales, 4 in MPECs 2012-A06 & 2012-A16 -- 2011 YU62, 2011 XE, 66251, 159857
J84South Obs. in England, 2 in MPEC 2012-A16 -- 2011 SL102, 2003 AK18
691Spacewatch 0.9m telescope in Arizona, 3 in MPECs 2012-A16 & 2012-A18 -- 2011 YM63, 85628, 1627
291Spacewatch 1.8m telescope in Arizona, 22 in MPECs 2012-A04, 2012-A05, 2012-A07, 2012-A08, 2012-A09, 2012-A10, 2012-A11, 2012-A15, 2012-A16, 2012-A17, 2012-A18, 2012-A19, 2012-A20, 2012-A21, 2012-A22 & 2012-A24 -- 2012 AZ, 2012 AY, 2012 AX, 2012 AW, 2012 AQ, 2012 AE1, 2011 YZ62, 2011 YY62, 2011 YX62, 2011 YW62, 2011 YW10, 2011 YV62, 2011 YT62, 2011 YS62, 2011 YM63, 2011 YL63, 2011 YK28, 2011 YH28, 2011 XZ1, 2011 XM1, 2011 WL2, 2011 UE305
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2012-A21 & 2012-A24 -- 2012 AY, 2012 AE1
H78Univ. of Narino Obs. in Colombia, 1 in MPEC 2012-A16 -- 170502
718Wiggins Obs. in Utah, 1 in MPEC 2012-A24 -- 2012 AE1
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 January '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
2011 YC63NEODyS17162047-207923.18e-08-9.08-9.090NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2011-12-31.388 to 2012-01-01.325."
JPL Sentry03132034-204721.4e-07-8.25-8.340JPL: "Analysis based on 14 observations spanning .93688 days (2011-Dec-31.38732 to 2012-Jan-01.3242)." Diameter approximately 0.005 km. from mean, weighted H=29.0.
2011 YV62JPL Sentry17162040-2111494.3e-06-3.17-3.590JPL #2 for the day: "Analysis based on 28 observations spanning 3.9718 days (2011-Dec-30.23271 to 2012-Jan-03.20453)." Diameter approximately 0.213 km. from mean, weighted H=21.0.
NEODyS17162040-2088413.43e-06-3.26-3.640NEODyS: "Based on 28 optical observations (of which 0 are rejected as outliers) from 2011-12-30.233 to 2012-01-03.205."
2011 YH28JPL Sentry17162022-2079122.0e-07-4.11-4.600JPL: "Analysis based on 25 observations spanning 6.1050 days (2011-Dec-27.41812 to 2012-Jan-02.52314)." Diameter approximately 0.306 km. from mean, weighted H=20.2.
NEODyS17162022-2079161.89e-07-4.11-4.630NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2011-12-27.419 to 2012-01-02.524."
2011 YW10JPL Sentry17162025-204224.6e-09-7.24-7.260JPL: "Analysis based on 38 observations spanning 8.9612 days (2011-Dec-25.21483 to 2012-Jan-03.17604)." Diameter approximately 0.054 km. from mean, weighted H=24.0.
NEODyS17162025-207052.94e-08-6.58-6.650NEODyS: "Based on 36 optical observations (of which 1 are rejected as outliers) from 2011-12-25.216 to 2012-01-03.177."
2011 XC2NEODyS17162056-208126.06e-06-3.93-3.930NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2011-12-08.199 to 2011-12-30.387."
2011 WL2JPL Sentry17162098-211026.0e-07-4.42-4.420JPL: "Analysis based on 189 observations spanning 47.807 days (2011-Nov-16.31883 to 2012-Jan-03.12552)." Diameter approximately 0.240 km. from mean, weighted H=20.7.
NEODyS17162083-208313.21e-09-6.60-6.60NEODyS: "Based on 189 optical observations (of which 0 are rejected as outliers) from 2011-11-16.320 to 2012-01-03.126."
2011 UE305JPL Sentry1716210912.6e-09-6.96-6.960JPL: "Analysis based on 74 observations spanning 63.933 days (2011-Oct-30.46441 to 2012-Jan-02.39779)." Diameter approximately 0.190 km. from mean, weighted H=21.3.

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 3 January '12

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

0243 1/4Grabbed MPEC 2012-A24 - 2012 AE1 - see above
2314Grabbed MPEC 2012-A23 - 2010 CL19 - see above
1855Grabbed MPEC 2012-A22 - 2012 AZ - see above
1826Grabbed MPEC 2012-A17 - 2011 YL63 - see above
Grabbed MPEC 2012-A18 - 2011 YM63 - see above
Grabbed MPEC 2012-A19 - 2012 AW - see above
Grabbed MPEC 2012-A20 - 2012 AX - see above
Grabbed MPEC 2012-A21 - 2012 AY - see above
1716Noted that JPL Sentry has updated its 2011 UE305 risk assessment - see above
Noted that JPL Sentry has updated its 2011 WL2 risk assessment - see above
Noted that NEODyS has updated its 2011 WL2 risk assessment - see above
Noted that NEODyS has updated its 2011 XC2 risk assessment - see above
Noted that NEODyS has posted 2011 YC63 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 YH28 risk assessment - see above
Noted that NEODyS has updated its 2011 YH28 risk assessment - see above
Noted that JPL Sentry has updated its 2011 YV62 risk assessment - see above
Noted that NEODyS has posted 2011 YV62 as an impact risk - see above
Noted that JPL Sentry has updated its 2011 YW10 risk assessment - see above
Noted that NEODyS has updated its 2011 YW10 risk assessment - see above
0753Grabbed MPEC 2012-A16 - Daily Orbit Update - see above
0313Noted that JPL Sentry has posted 2011 YC63 as an impact risk - see above
Noted that JPL Sentry has posted 2011 YV62 as an impact risk - see above
0137Grabbed MPEC 2012-A04 - 2011 YS62 - see above
Grabbed MPEC 2012-A05 - 2011 YT62 - see above
Grabbed MPEC 2012-A06 - 2011 YU62 - see above
Grabbed MPEC 2012-A07 - 2011 YV62 - see above
Grabbed MPEC 2012-A08 - 2011 YW62 - see above
Grabbed MPEC 2012-A09 - 2011 YX62 - see above
Grabbed MPEC 2012-A10 - 2011 YY62 - see above
Grabbed MPEC 2012-A11 - 2011 YZ62 - see above
Grabbed MPEC 2012-A12 - 2011 YA63 - see above
Grabbed MPEC 2012-A13 - 2011 YB63 - see above
Grabbed MPEC 2012-A14 - 2011 YC63 - see above
Grabbed MPEC 2012-A15 - 2012 AQ - see above