Contents  on 30 September '13

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 30 September '13

Four objects reported inside ten LD

Four objects are reported to be within a radius of ten lunar distances (LD) from our planet today. 2013 SK20 exits Earth's Hill sphere, passing from 3.39 to 5.53 LD. More distant, risk-listed intruder 2013 RZ53 is outbound from 3.91 to 4.24 LD, newly announced 2013 SU24 is inbound from 9.01 to 7.93 LD, and 2013 SP19 exits ten LD, passing from 9.81 to 10.95 LD.

Up next, 2013 SC21 arrives inside ten LD on October 5th.

This report was updated at 2004 UTC with new discovery 2013 SU24 (MPEC). Today's first traffic report was generated at 1452 UTC with first follow-up in today's DOU MPEC for 2013 SC21 and observation of distant 2006 VV2.



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. "Distant" is used to describe previous close-passers (2007+) that are not coming inside ten LD during this passage or apparition. 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 30 September '13

The MPC's NEO Confirmation Page has 15 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had fifteen objects listed. Of these, ten were "one nighters." So far The Tracking News has counted a total of 32 listings on the NEOCP today.

New MPECs  on 30 September '13

Minor Planet Electronic Circulars

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


MPEC 2013-S76 - "23:13 UT" - 2013 PY6


<< OOC on 30 Sept. '13 >> MPEC 2013-S75 - "21:16 UT" - Observations and Orbits of Comets


MPEC 2013-S74 - "18:14 UT" - 2013 SW24


MPEC 2013-S73 - "18:03 UT" - 2013 SV24


MPEC 2013-S72 - "17:59 UT" - 2013 SU24


MPEC 2013-S71 - "17:49 UT" - 2013 SR24


MPEC 2013-S70 - "13:09 UT" - 2010 CD55


MPEC 2013-S69 - "13:04 UT" - 2008 SD85


MPEC 2013-S68 - "11:06 UT" - 2013 SO24


MPEC 2013-S67 - "11:01 UT" - 2013 SN24


MPEC 2013-S66 - "10:57 UT" - 2013 SM24


<< DOU on 30 Sept. '13 >>  MPEC 2013-S65 - "06:03 UT" - Daily Orbit Update

Observers  on 30 September '13

A total of 105 observers appear in today's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 13 in MPEC 2013-S75 -- P/2013 R3, C/2013 R1, C/2013 P3, C/2013 N4, C/2013 E2, C/2012 V2, C/2012 S1, C/2012 A2, C/2009 F4, 292P, 291P, 84P, 2P
J24Altamira Obs. in the Canary Islands, 23 in MPEC 2013-S75 -- P/2013 R3, C/2013 R1, P/2013 J2, C/2013 E2, C/2013 A1, C/2012 S4, C/2012 S1, C/2012 K8, C/2012 K1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 292P, 290P, 257P, 154P, 98P, 84P, 26P, 17P, 4P, 2P
Z74Amanecer de Arrakis Obs., 4 in MPEC 2013-S75 -- C/2012 S1, C/2012 F6, C/2010 S1, 154P
H17Angel Peaks Obs. in Colorado, 1 in MPEC 2013-S65 -- 162273
E23Arcadia Obs. in New South Wales, 2 in MPECs 2013-S72 & 2013-S73 -- 2013 SV24, 2013 SU24
H21Astronomical Research Obs. Westfield in Illinois, 20 in MPECs 2013-S65, 2013-S67 & 2013-S71 -- 2013 SY19, 2013 SX19, 2013 ST, 2013 SS19, 2013 SS, 2013 SR24, 2013 SR, 2013 SO19, 2013 SN24, 2013 SN20, 2013 SM20, 2013 SK19, 2013 SC20, 2013 SA20, 2013 QJ36, 2013 ET9, 2010 GY6, 2005 XD1, 2005 AD3, 2000 HW23
I47Auger Obs. in Argentina, 2 in MPEC 2013-S75 -- C/2009 F4, 154P
300Bisei Spaceguard Center in Japan, 1 in MPEC 2013-S75 -- P/2013 R3
C86Blanes Obs. in Spain, 4 in MPEC 2013-S75 -- C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1
I99Blanquita Obs. in Spain, 3 in MPEC 2013-S75 -- C/2012 F6, C/2010 S1, 154P
B96Brixiis Obs. in Belgium, 3 in MPEC 2013-S75 -- C/2012 S1, C/2011 L4, 2P
215Buchloe Obs. in Germany, 3 in MPEC 2013-S75 -- C/2013 R1, C/2012 S1, 2P
G36CASADO in Spain, 7 in MPEC 2013-S75 -- P/2013 P5, C/2013 P2, C/2012 S1, C/2012 K1, C/2011 L4, 74P, 65P
W96Campo Catino Austral Obs. (CAO) in Chile, 18 in MPEC 2013-S75 -- P/2013 R3, C/2013 R1, C/2013 E2, P/2013 CU129, C/2013 A1, C/2012 V2, C/2012 S1, C/2012 C1, C/2011 O1, C/2011 F1, C/2009 F4, 197P, 154P, 152P, 74P, 32P, 17P, 2P
I72Carpe Noctem Obs., 16 in MPECs 2013-S65 & 2013-S75 -- P/2013 J2, C/2012 S1, C/2012 K1, C/2012 J1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 433, 290P, 257P, 178P, 119P, 84P, 4P, 2P
160Castelmartini Obs. in Italy, 23 in MPECs 2013-S65 & 2013-S75 -- 2013 RH74, C/2013 R1, 2013 QJ10, 2013 PX6, P/2013 J2, 2013 HG20, 2012 TS, C/2012 S4, C/2012 F6, 2011 WU95, C/2011 L4, C/2010 S1, 2005 EF, 52760, 290P, 270P, 257P, 184P, 154P, 119P, 102P, 84P, 2P
703Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2013-S65, 2013-S68, 2013-S71, 2013-S72, 2013-S73 & 2013-S75 -- 2013 SV24, 2013 SU24, 2013 ST, 2013 SR24, 2013 SO24, 2013 RM43, C/2012 S4, 2011 QD48, 2010 UX95, 2008 HB38, 39565, 370307, 369986, 275677, 269690, 162679, 154276, 137126, 8013, 4197, 154P, 110P, 32P
470Ceccano Obs. in Italy, 3 in MPEC 2013-S75 -- C/2013 R1, C/2012 S1, 2P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2013-S72 -- 2013 SU24
A77Chante-Perdrix Obs. in France, 11 in MPEC 2013-S75 -- P/2013 J2, C/2012 S1, C/2012 K1, C/2012 F6, C/2012 A2, C/2011 L4, C/2009 F4, 290P, 154P, 4P, 2P
970Chelmsford Obs. in England, 4 in MPEC 2013-S75 -- C/2012 K8, C/2012 F6, C/2011 L4, C/2010 S1
B92Chinon Obs. in France, 2 in MPEC 2013-S75 -- C/2011 L4, 154P
1211Yu. N. Krugly via Chuguevskaya Station in the Ukraine, 1 in MPEC 2013-S75 -- C/2013 N4
J01Cielo Profundo Obs. in Spain, 2 in MPEC 2013-S75 -- P/2013 J2, C/2012 S4
850Cordell-Lorenz Obs. in Tennessee, 3 in MPEC 2013-S75 -- 154P, 119P, 2P
B50Corner Obs. in Germany, 1 in MPEC 2013-S75 -- 154P
448Desert Moon Obs. in New Mexico, 6 in MPECs 2013-S65, 2013-S71 & 2013-S73 -- 2013 SV24, 2013 SR24, 2013 SE21, 2013 RM43, 2003 WX25, 197588
G48Doc Greiner Research Obs. Rancho Hildalgo in New Mexico, 1 in MPEC 2013-S71 -- 2013 SR24
113Drebach Obs. in Germany, 6 in MPECs 2013-S67, 2013-S71, 2013-S72, 2013-S73, 2013-S74 & 2013-S75 -- 2013 SW24, 2013 SV24, 2013 SU24, 2013 SR24, 2013 SN24, C/2012 S1
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2013-S75 -- C/2012 S1
E102Ernesto Guido in Italy via Faulkes Telescope South in New South Wales, 4 in MPEC 2013-S75 -- P/2013 J2, C/2013 E2, C/2009 F4, 154P
372Geisei Obs. in Japan, 7 in MPEC 2013-S75 -- C/2013 R1, C/2013 P3, P/2013 J2, C/2013 E2, C/2012 S1, C/2011 L4, 2P
203GiaGa Obs. in Italy, 2 in MPEC 2013-S75 -- P/2013 J2, C/2012 S4
E94Gisborne Obs. in New Zealand, 4 in MPEC 2013-S75 -- C/2013 R1, C/2011 F1, C/2009 F4, 154P
238Grorudalen Obs., 4 in MPEC 2013-S75 -- C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1
511Haute Provence Obs. in Germany, 3 in MPEC 2013-S75 -- P/2013 J2, C/2012 K8, 4P
D88Hiratsuka Obs. in Japan, 8 in MPEC 2013-S75 -- C/2013 R1, C/2013 N4, P/2013 J2, C/2012 S1, C/2012 F6, C/2010 S1, 246P, 154P
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2013-S71 -- 2013 SR24
D00ISON-Kislovodsk Obs., 1 in MPEC 2013-S75 -- C/2012 S1
A21Irmtraut Obs. in Germany, 2 in MPEC 2013-S75 -- C/2012 S1, 2P
246KLENOT in the Czech Republic, 8 in MPECs 2013-S67, 2013-S71 & 2013-S75 -- 2013 SR24, 2013 SN24, C/2013 E2, C/2012 S4, C/2012 K8, C/2010 S1, 257P, 102P
Q24Katori Obs., 3 in MPEC 2013-S75 -- P/2013 J2, C/2012 F6, C/2010 S1
K48Keyhole Obs., 1 in MPEC 2013-S75 -- C/2010 S1
585Kiev Comet Station in the Ukraine, 3 in MPEC 2013-S75 -- C/2012 K8, C/2010 S1, 4P
168Kourovskaya Obs. in Russia, 2 in MPEC 2013-S75 -- C/2012 F6, C/2011 L4
D95Kurihara Obs. in Japan, 7 in MPEC 2013-S75 -- C/2013 R1, C/2013 N4, C/2012 S1, C/2012 K1, C/2012 J1, C/2011 L4, C/2011 J2
K92LCOGT Sutherland B in South Africa, 2 in MPECs 2013-S66 & 2013-S73 -- 2013 SV24, 2013 SM24
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2013-S65 -- 2012 FR62
G38La Senda Obs., 2 in MPEC 2013-S75 -- P/2013 J2, C/2012 S4
J38La Vara Obs. in Spain, 7 in MPEC 2013-S75 -- P/2013 J2, C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1, 154P, 4P
I36Los Campitos Obs. in Argentina, 1 in MPEC 2013-S72 -- 2013 SU24
C41MASTER-II Obs. Kislovodsk in Russia, 1 in MPEC 2013-S74 -- 2013 SW24
C94MASTER-II Obs. Tunka in Russia, 1 in MPEC 2013-S74 -- 2013 SW24
C10Maisoncelles Obs. in France, 10 in MPEC 2013-S75 -- C/2013 N4, P/2013 J2, C/2012 S1, C/2012 F6, C/2011 L4, C/2011 J2, 290P, 257P, 154P, 2P
A02Masia Cal Maciarol Modul 8 (MCM8) in Spain, 4 in MPEC 2013-S75 -- C/2011 L4, C/2010 S1, 4P, 2P
A06Mataro Obs. in Spain, 3 in MPEC 2013-S75 -- C/2012 K1, C/2012 F6, C/2011 L4
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPEC 2013-S75 -- P/2013 R3, P/2013 P5
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2013-S75 -- C/2012 S1
152Moletai Obs. in Lithuania, 2 in MPEC 2013-S75 -- C/2013 R1, C/2012 S1
213Montcabre Obs. in Spain, 1 in MPEC 2013-S75 -- 4P
945Monte Deva Obs. in Spain, 7 in MPEC 2013-S75 -- C/2013 E2, C/2012 K1, C/2012 F6, C/2011 L4, C/2011 J2, C/2010 S1, 154P
900Moriyama Obs. in Japan, 13 in MPECs 2013-S71 & 2013-S75 -- 2013 SR24, C/2013 R1, P/2013 O2, C/2013 N4, P/2013 J2, C/2013 E2, C/2012 S1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 154P, 2P
G96Mt. Lemmon Survey (MLS) in Arizona, 13 in MPECs 2013-S65, 2013-S66, 2013-S67, 2013-S68 & 2013-S75 -- 2013 SO24, 2013 SN24, 2013 SM24, 2013 SL19, 2013 RJ36, P/2013 R3, 2010 SL13, 2010 CE55, 2006 VV2, 2004 HW, 2000 GC147, 1999 SK10, 154P
J93Mt. Tuffley Obs. in England, 2 in MPEC 2013-S75 -- C/2011 L4, C/2010 S1
E07Murrumbateman Obs. in New South Wales, 6 in MPEC 2013-S75 -- C/2013 R1, C/2013 P4, P/2013 N3, 246P, 154P, 4P
D81Nagano Obs. in Japan, 5 in MPEC 2013-S75 -- C/2012 S1, C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1
A24New Millennium Obs. in Italy, 12 in MPEC 2013-S75 -- C/2013 P2, P/2013 O2, P/2013 J2, C/2013 E2, C/2012 K8, C/2012 F6, C/2010 S1, 291P, 257P, 119P, 84P, 2P
C47Nonndorf Obs. in Austria, 10 in MPECs 2013-S71 & 2013-S75 -- 2013 SR24, P/2013 R3, C/2013 E2, C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1, 257P, 119P, 2P
423North Ryde Obs. in New South Wales, 3 in MPEC 2013-S75 -- C/2013 R1, C/2013 A1, C/2011 F1
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2013-S75 -- C/2012 K1
C23Olmen Obs. in Belgium, 14 in MPEC 2013-S75 -- C/2013 R1, P/2013 J2, C/2012 S1, C/2012 K8, C/2012 K1, C/2012 J1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 154P, 26P, 4P, 2P
B69Owls & Ravens Obs. in Germany, 3 in MPEC 2013-S75 -- C/2012 F6, C/2011 L4, C/2010 S1
261&Rob Matson in southern California using the Palomar Digitized Sky Survey in southern California, 1 in MPEC 2013-S76 -- 2013 PY6
I41Palomar Transient Factory (PTF) in southern California, 9 in MPECs 2013-S65 & 2013-S75 -- 2013 PV6, C/2013 E2, C/2012 A2, 2010 TN54, 2003 RM, 326946, 276786, 17511, 257P
F51Pan-STARRS 1 (PS1) in Hawaii, 11 in MPECs 2013-S65 & 2013-S75 -- 2013 SO19, P/2013 P5, C/2013 P4, C/2013 P3, P/2013 P1, 2013 HG20, C/2012 S4, C/2012 F6, 154P, 74P, 32P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 17 in MPEC 2013-S75 -- C/2013 R1, C/2013 P2, P/2013 J2, C/2013 E2, C/2012 S4, C/2012 K8, C/2012 J1, C/2012 F6, C/2012 A2, C/2010 S1, 290P, 257P, 154P, 102P, 84P, 4P, 2P
162Potenza Obs., 1 in MPEC 2013-S75 -- C/2012 F6
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 17 in MPECs 2013-S71, 2013-S72 & 2013-S75 -- 2013 SU24, 2013 SR24, C/2013 R1, P/2013 J2, C/2013 E2, P/2013 CU129, C/2013 A1, C/2012 V2, C/2012 S4, C/2012 J1, C/2012 C1, C/2011 O1, C/2011 F1, 292P, 119P, 98P, 17P
K70Rosarno Obs., 1 in MPEC 2013-S75 -- C/2012 S1
C95SATINO-1 in France, 2 in MPECs 2013-S65 & 2013-S75 -- C/2012 S1, 24445
Y00SONEAR Obs. in Brazil, 8 in MPEC 2013-S75 -- P/2013 J2, C/2013 E2, C/2012 S4, C/2012 A2, C/2011 F1, 292P, 257P, 246P
461SZTE Asteroid Program in Hungary, 11 in MPECs 2013-S71 & 2013-S75 -- 2013 SR24, C/2013 R1, C/2013 P3, C/2012 S1, C/2012 Q1, C/2012 K8, C/2011 KP36, C/2010 S1, C/2008 S3, 290P, 102P
854Sabino Canyon Obs. in Arizona, 4 in MPECs 2013-S67, 2013-S68, 2013-S72 & 2013-S73 -- 2013 SV24, 2013 SU24, 2013 SO24, 2013 SN24
H36Sandlot Obs. in Kansas, 5 in MPECs 2013-S67, 2013-S71, 2013-S72, 2013-S73 & 2013-S75 -- 2013 SV24, 2013 SU24, 2013 SR24, 2013 SN24, 178P
B70Sant Celoni Obs. in Spain, 2 in MPEC 2013-S75 -- C/2012 S1, C/2012 F6
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPECs 2013-S71 & 2013-S75 -- 2013 SR24, 98P
204Schiaparelli Obs. in Italy, 1 in MPEC 2013-S75 -- C/2012 S1
260&Rob Matson in southern California using the Siding Spring Digitized Sky Survey in New South Wales, 1 in MPEC 2013-S76 -- 2013 PY6
510Siegen Obs. in Germany, 8 in MPEC 2013-S75 -- P/2013 R3, C/2013 R1, C/2012 S1, C/2012 K1, C/2011 L4, 154P, 102P, 2P
G68Sierra Stars Obs. in northern California, 2 in MPEC 2013-S75 -- P/2013 J2, C/2012 S1
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-S75 -- C/2012 S1
G403program code 3 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-S75 -- 154P
G404program code 4 via Slooh.com Canary Islands Obs. in the Canary Islands, 5 in MPEC 2013-S75 -- C/2013 R1, C/2012 S1, 154P, 32P, 2P
K90Sopot Obs., 6 in MPEC 2013-S75 -- C/2013 E2, C/2012 S1, C/2012 F6, C/2010 S1, 257P, 154P
691Spacewatch 0.9m telescope in Arizona, 16 in MPECs 2013-S65, 2013-S71 & 2013-S75 -- 2013 SR24, 2013 RZ73, 2013 RW73, 2013 RV9, 2013 RR5, 2013 RM43, 2013 RL21, 2013 RK43, 2013 RH43, 2013 RD21, 2013 RB74, 2013 QK48, 2013 QJ48, 2013 PA7, 2008 HB38, 154P
C36Starry Wanderer Obs. in Belarus, 1 in MPEC 2013-S75 -- 2P
A71Stixendorf Obs. in Austria, 14 in MPEC 2013-S75 -- C/2013 R1, C/2013 P4, C/2013 P3, P/2013 P1, P/2013 O2, P/2013 J2, C/2012 S4, C/2012 S1, 291P, 290P, 257P, 154P, 119P, 2P
I81Tarbatness Obs. in Scotland, 10 in MPEC 2013-S75 -- C/2013 R1, P/2013 J2, C/2013 E2, C/2012 S1, C/2012 K1, C/2011 L4, C/2011 J2, 257P, 119P, 2P
926Tenagra II Obs. in Arizona, 13 in MPECs 2013-S65, 2013-S69, 2013-S70, 2013-S71, 2013-S72 & 2013-S73 -- 2013 SV24, 2013 SU24, 2013 SR24, 2013 SM20, 2013 SL20, 2013 SF, 2013 SE21, 2013 SD21, 2013 SC21, 2013 RW73, 2013 RV9, 2010 CD55, 2008 SD85
C35Terrassa Obs., 4 in MPEC 2013-S75 -- P/2013 J2, C/2012 F6, C/2010 S1, 154P
B51Vallauris Obs. in France, 7 in MPEC 2013-S75 -- C/2013 R1, P/2013 J2, C/2012 S1, C/2012 A2, 257P, 154P, 2P
H47Vicksburg Obs. in Mississippi, 7 in MPEC 2013-S75 -- C/2013 R1, C/2013 E2, C/2010 S1, 257P, 154P, 4P, 2P
C42Xingming Obs. in China, 1 in MPEC 2013-S75 -- C/2012 S1
367Yatsuka Obs. in Japan, 3 in MPEC 2013-S75 -- C/2013 R1, C/2012 S1, 2P
J08Zonalunar Obs. in Spain, 5 in MPEC 2013-S75 -- C/2012 S1, C/2012 F6, C/2011 L4, 257P, 2P
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-S75 -- C/2012 S1
H06%Ernesto Guido in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-S75 -- P/2013 R3
H06*Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-S75 -- C/2012 S1
H06`Erik Bryssinck in Belgium via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-S75 -- C/2012 S1
Q622program code 2 via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-S72 -- 2013 SU24
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 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 SW24JPL Sentry2314203216.9e-07-3.72-3.720JPL: "Analysis based on 14 observations spanning 3.1936 days (2013-Sep-27.55584 to 2013-Sep-30.74944)." Diameter approximately 0.240 km. from mean, weighted H=20.8.

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 30 September '13

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

2314Noted that JPL Sentry has posted 2013 SW24 as an impact risk - see above
Grabbed MPEC 2013-S75 - Observations and Orbits of Comets - see above
Grabbed MPEC 2013-S76 - 2013 PY6 - see above
2004Updated Traffic Report
1902Grabbed MPEC 2013-S71 - 2013 SR24 - see above
Grabbed MPEC 2013-S72 - 2013 SU24 - see above
Grabbed MPEC 2013-S73 - 2013 SV24 - see above
Grabbed MPEC 2013-S74 - 2013 SW24 - see above
1447Grabbed MPEC 2013-S65 - Daily Orbit Update - see above
Grabbed MPEC 2013-S66 - 2013 SM24 - see above
Grabbed MPEC 2013-S67 - 2013 SN24 - see above
Grabbed MPEC 2013-S68 - 2013 SO24 - see above
Grabbed MPEC 2013-S69 - 2008 SD85 - see above
Grabbed MPEC 2013-S70 - 2010 CD55 - see above