Contents  on 3 September '13

Asteroid/Comet Connection (A/CC) Resources:

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Traffic Report  on 3 September '13

Four objects reported inside ten LD

There are four objects reported possibly traveling inside ten lunar distances (LD) of Earth today. Newly announced 2013 RG may be an intruder passing between Earth and Moon today according to JPL, which indicates an uncertainty, however, of greater than ten days. Also newly announced, 2013 RZ5 enters Earth's Hill sphere, passing from 5.09 to 1.60 LD. Further out, 2013 QE16 is inbound from 8.57 to 8.33 LD and newly discovered 2013 RO5 is outbound from 8.87 to 9.60 LD.

This report was updated at 2325 UTC with new discoveries 2013 RZ5 (MPEC), 2013 RQ5 (MPEC), and 2013 RO5 (MPEC), along with already departed objects 2013 QP48 (MPEC) and 2013 QM48 (MPEC). Today's first traffic report was generated at 1630 UTC with the discovery of 2013 RG (MPEC) and follow-up in today's DOU MPEC for 2013 QE16 as well as departed objects 2013 QG11 and radar target 277475 2005 WK4, plus observation of distant radar target 152664 1998 FW4.



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 3 September '13

The MPC's NEO Confirmation Page has 52 listings

When last checked at 2320 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 52 objects listed. Of these, 23 were "one nighters." So far The Tracking News has counted a total of 100 listings on the NEOCP today.

New MPECs  on 3 September '13

Minor Planet Electronic Circulars

As of last check at 2320 UTC, there have been 23 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2013-R31 - "21:58 UT" - 2013 RE6


MPEC 2013-R30 - "21:53 UT" - 2013 RD6


MPEC 2013-R29 - "21:48 UT" - 2013 RC6


MPEC 2013-R28 - "21:41 UT" - 2013 RB6


MPEC 2013-R27 - "21:36 UT" - 2013 RA6


MPEC 2013-R26 - "21:30 UT" - 2013 RZ5


MPEC 2013-R25 - "21:24 UT" - 2013 RY5


MPEC 2013-R24 - "21:19 UT" - 2013 RW5


MPEC 2013-R23 - "21:14 UT" - 2013 RV5


MPEC 2013-R22 - "21:06 UT" - 2013 RU5


MPEC 2013-R21 - "21:01 UT" - 2013 RS5


MPEC 2013-R20 - "20:56 UT" - 2013 RR5


MPEC 2013-R19 - "20:51 UT" - 2013 RQ5


MPEC 2013-R18 - "20:46 UT" - 2013 RO5


MPEC 2013-R17 - "20:40 UT" - 2013 QP48


MPEC 2013-R16 - "20:35 UT" - 2013 QO48


MPEC 2013-R15 - "20:29 UT" - 2013 QN48


MPEC 2013-R14 - "20:24 UT" - 2013 QM48


MPEC 2013-R13 - "20:19 UT" - 2013 QK48


MPEC 2013-R12 - "20:12 UT" - 2013 QJ48


MPEC 2013-R11 - "20:06 UT" - 2013 QH48


<< DOU on 3 Sept. '13 >>  MPEC 2013-R10 - "06:03 UT" - Daily Orbit Update


MPEC 2013-R09 - "01:08 UT" - 2013 RG

Observers  on 3 September '13

A total of 31 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 1 in MPEC 2013-R18 -- 2013 RO5
H21Astronomical Research Obs. Westfield in Illinois, 31 in MPECs 2013-R09, 2013-R10, 2013-R11, 2013-R13, 2013-R14, 2013-R16, 2013-R18, 2013-R19, 2013-R20, 2013-R21, 2013-R22, 2013-R23, 2013-R24, 2013-R25, 2013-R26, 2013-R27, 2013-R28, 2013-R29, 2013-R30 & 2013-R31 -- 2013 RZ5, 2013 RY5, 2013 RW5, 2013 RV5, 2013 RU5, 2013 RS5, 2013 RR5, 2013 RQ5, 2013 RO5, 2013 RG, 2013 RE6, 2013 RD6, 2013 RC6, 2013 RB6, 2013 RA6, 2013 QV1, 2013 QO48, 2013 QM48, 2013 QM10, 2013 QK48, 2013 QJ10, 2013 QH48, 2013 QG11, 2013 QD11, 2013 QC11, 2013 PX6, 2013 PV6, 2013 PD39, 2013 OM9, 2011 SD173, 1998 SO
B75Betelgeuse Station in Italy, 1 in MPEC 2013-R10 -- 2013 QJ10
B88Bigmuskie Obs. in Italy, 2 in MPEC 2013-R10 -- 2013 QH11, 2013 OM9
U82CS3 Palmer Divide Station in southern California, 3 in MPEC 2013-R10 -- 2013 QJ10, 2013 OM9, 329437
703Catalina Sky Survey (CSS) in Arizona, 9 in MPECs 2013-R10 & 2013-R18 -- 2013 RO5, 2013 PU13, 2013 BO76, 2010 UX95, 2005 EJ94, 65733, 368664, 6063, 3361
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 4 in MPECs 2013-R11, 2013-R12, 2013-R15 & 2013-R18 -- 2013 RO5, 2013 QN48, 2013 QJ48, 2013 QH48
448Desert Moon Obs. in New Mexico, 4 in MPEC 2013-R10 -- 2013 PN43, 2013 PC7, 354952, 251346
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-R18 -- 2013 RO5
J95Great Shefford Obs. in England, 8 in MPECs 2013-R09, 2013-R18, 2013-R19, 2013-R25, 2013-R26, 2013-R28, 2013-R29 & 2013-R30 -- 2013 RZ5, 2013 RY5, 2013 RQ5, 2013 RO5, 2013 RG, 2013 RD6, 2013 RC6, 2013 RB6
W85LCOGT Cerro Tololo A in Chile, 3 in MPECs 2013-R11, 2013-R22 & 2013-R28 -- 2013 RU5, 2013 RB6, 2013 QH48
W86LCOGT Cerro Tololo B in Chile, 3 in MPECs 2013-R12, 2013-R13 & 2013-R20 -- 2013 RR5, 2013 QK48, 2013 QJ48
I36Los Campitos Obs. in Argentina, 1 in MPEC 2013-R18 -- 2013 RO5
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2013-R10 -- 2013 NC15, 2013 GK69
568_Marco Micheli on Mauna Kea in Hawaii, 11 in MPECs 2013-R10, 2013-R11, 2013-R12, 2013-R13, 2013-R14, 2013-R15, 2013-R16, 2013-R17, 2013-R21, 2013-R23 & 2013-R24 -- 2013 RW5, 2013 RV5, 2013 RS5, 2013 QP48, 2013 QO48, 2013 QN48, 2013 QM48, 2013 QK48, 2013 QJ48, 2013 QH48, 2002 RT
B67Mirasteilas Obs. in Switzerland, 3 in MPEC 2013-R10 -- 2013 QE16, 2013 PU13, 2013 OM9
474Mt. John Obs. in New Zealand, 10 in MPECs 2013-R09, 2013-R10, 2013-R18 & 2013-R26 -- 2013 RZ5, 2013 RO5, 2013 RG, 2013 QU1, 2013 QM10, 2013 QH17, 2013 QE16, 2013 QC11, 2013 PY38, 2008 TV25
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2013-R09, 2013-R10, 2013-R19, 2013-R22, 2013-R25, 2013-R26, 2013-R27, 2013-R28, 2013-R29 & 2013-R30 -- 2013 RZ5, 2013 RY5, 2013 RU5, 2013 RQ5, 2013 RG, 2013 RD6, 2013 RC6, 2013 RB6, 2013 RA6, 2013 QE11, 2005 EJ94, 368664, 288807
644NEAT's Mt. Palomar telescope in southern California, 5 in MPEC 2013-R10 -- 2002 VR94, 2002 TN30, 2002 QZ6, 2002 PC130, 2001 XG105
A13Naef Obs. in Switzerland, 2 in MPEC 2013-R10 -- 350988, 4450
J43Oukaimeden Obs. in Morocco, 2 in MPEC 2013-R10 -- 2010 TN54, 5143
Q61PROMPT A in New South Wales, 1 in MPEC 2013-R12 -- 2013 QJ48
I41Palomar Transient Factory (PTF) in southern California, 4 in MPEC 2013-R10 -- 275677, 223456, 4450, 3361
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2013-R10, 2013-R11, 2013-R12, 2013-R13, 2013-R14, 2013-R15, 2013-R16, 2013-R17, 2013-R20, 2013-R21, 2013-R23, 2013-R24, 2013-R29 & 2013-R31 -- 2013 RW5, 2013 RV5, 2013 RS5, 2013 RR5, 2013 RF, 2013 RE6, 2013 RC6, 2013 QP48, 2013 QO48, 2013 QN48, 2013 QM48, 2013 QK48, 2013 QJ48, 2013 QH48, 2006 KD1, 2002 RT, 162149
Y00SONEAR Obs. in Brazil, 37 in MPECs 2013-R10 & 2013-R18 -- 2013 RO5, 2013 OM9, 2013 BO76, 2011 QD48, 2010 UX95, 2010 TN54, 2010 CF19, 2009 WE253, 2009 CP5, 2006 QA58, 2006 EE1, 2003 OB4, 2002 RH52, 85804, 54789, 52762, 39565, 368664, 303262, 277475, 271480, 250620, 242450, 242216, 20826, 17182, 163696, 159699, 152664, 143678, 137126, 8013, 4957, 4486, 4197, 3691, 1685
H36Sandlot Obs. in Kansas, 6 in MPECs 2013-R10, 2013-R11, 2013-R28 & 2013-R31 -- 2013 RE6, 2013 RB6, 2013 QH48, 2007 UB66, 2005 SH26, 2002 RT
204Schiaparelli Obs. in Italy, 9 in MPECs 2013-R10, 2013-R11, 2013-R18, 2013-R23, 2013-R25, 2013-R26, 2013-R28 & 2013-R30 -- 2013 RZ5, 2013 RY5, 2013 RV5, 2013 RO5, 2013 RD6, 2013 RB6, 2013 QH48, 2013 QE16, 2013 PO43
J84South Obs. in England, 1 in MPEC 2013-R10 -- 2013 QE16
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2013-R11, 2013-R13, 2013-R16, 2013-R17, 2013-R21 & 2013-R26 -- 2013 RZ5, 2013 RS5, 2013 QP48, 2013 QO48, 2013 QK48, 2013 QH48
I93St. Pardon de Conques Obs. in France, 7 in MPECs 2013-R18, 2013-R23, 2013-R25, 2013-R26, 2013-R28, 2013-R29 & 2013-R30 -- 2013 RZ5, 2013 RY5, 2013 RV5, 2013 RO5, 2013 RD6, 2013 RC6, 2013 RB6
A48Verona Obs. in Italy, 2 in MPEC 2013-R10 -- 2013 QJ10, 2013 OM9
A79Zvezdno Obshtestvo Obs. in Bulgaria, 4 in MPECs 2013-R09, 2013-R18, 2013-R28 & 2013-R29 -- 2013 RO5, 2013 RG, 2013 RC6, 2013 RB6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 3 September '13

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
2013 RFJPL Sentry1458209741.5e-06-4.77-4.970JPL: "Analysis based on 41 observations spanning 3.0504 days (2013-Aug-30.43539 to 2013-Sep-02.48584)." Diameter approximately 0.095 km. from mean, weighted H=22.8.
NEODyS14582091-209771.11e-08-6.88-7.010NEODyS: "Based on 41 optical observations (of which 0 are rejected as outliers) from 2013-08-30.436 to 2013-09-02.487."
2013 QM48JPL Sentry22342071-2113352.8e-05-6.06-6.800JPL: "Analysis based on 8 observations spanning 3.8201 days (2013-Aug-30.46095 to 2013-Sep-03.281088)." Diameter approximately 0.012 km. from mean, weighted H=27.3.

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 September '13

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

2325Updated Traffic Report
2234Noted that JPL Sentry has posted 2013 QM48 as an impact risk - see above
Grabbed MPEC 2013-R28 - 2013 RB6 - see above
Grabbed MPEC 2013-R29 - 2013 RC6 - see above
Grabbed MPEC 2013-R30 - 2013 RD6 - see above
Grabbed MPEC 2013-R31 - 2013 RE6 - see above
2141Grabbed MPEC 2013-R23 - 2013 RV5 - see above
Grabbed MPEC 2013-R24 - 2013 RW5 - see above
Grabbed MPEC 2013-R25 - 2013 RY5 - see above
Grabbed MPEC 2013-R26 - 2013 RZ5 - see above
Grabbed MPEC 2013-R27 - 2013 RA6 - see above
2112Grabbed MPEC 2013-R13 - 2013 QK48 - see above
Grabbed MPEC 2013-R14 - 2013 QM48 - see above
Grabbed MPEC 2013-R15 - 2013 QN48 - see above
Grabbed MPEC 2013-R16 - 2013 QO48 - see above
Grabbed MPEC 2013-R17 - 2013 QP48 - see above
Grabbed MPEC 2013-R18 - 2013 RO5 - see above
Grabbed MPEC 2013-R19 - 2013 RQ5 - see above
Grabbed MPEC 2013-R20 - 2013 RR5 - see above
Grabbed MPEC 2013-R21 - 2013 RS5 - see above
Grabbed MPEC 2013-R22 - 2013 RU5 - see above
2019Grabbed MPEC 2013-R11 - 2013 QH48 - see above
Grabbed MPEC 2013-R12 - 2013 QJ48 - see above
1458Noted that JPL Sentry has updated its 2013 RF risk assessment - see above
Noted that NEODyS has posted 2013 RF as an impact risk - see above
Grabbed MPEC 2013-R10 - Daily Orbit Update - see above
0117Grabbed MPEC 2013-R09 - 2013 RG - see above