Contents  on 6 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 6 September '13

Four objects reported inside ten LD

Four asteroids are reported flying inside ten lunar distances (LD) of our planet today. 2013 RQ5 comes its closest to Earth on this passage, reaching 4.77 LD at 0639 UT. 2013 QE16 is outbound from 8.21 to 8.33 LD, 2013 RZ5 exits ten LD, zooming from 6.66 to 10.47 LD, and intruder 2013 RG exits ten LD, moving from 9.29 to 12.91 LD.

This report was generated at 1549 UTC with follow-up in today's DOU MPEC for 2013 RQ5 and 2013 RO5 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. 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 6 September '13

The MPC's NEO Confirmation Page has 27 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 27 objects listed. Of these, nine were "one nighters." The Tracking News counted a total of 35 listings on the NEOCP on this day.

New MPECs  on 6 September '13

Minor Planet Electronic Circulars

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


<< OOC on 6 Sept. '13 >> MPEC 2013-R59 - "23:38 UT" - Observations and Orbits of Comets


MPEC 2013-R58 - "22:51 UT" - 2013 RY29


MPEC 2013-R57 - "22:46 UT" - 2013 RB30


<< DOU on 6 Sept. '13 >>  MPEC 2013-R56 - "06:04 UT" - Daily Orbit Update

Observers  on 6 September '13

A total of 116 observers appeared in this day's MPECs.

CodeObserver / observatory
349Ageo Obs. in Japan, 22 in MPEC 2013-R59 -- P/2013 O2, C/2013 N4, P/2013 J2, C/2013 E2, C/2012 V2, C/2012 S4, C/2012 S1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 U3, C/2010 S1, C/2009 F4, 290P, 257P, 246P, 154P, 152P, 119P, 102P, 98P, 2P
J24Altamira Obs. in the Canary Islands, 19 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 S4, C/2012 S1, C/2012 K8, C/2012 K1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 290P, 257P, 154P, 102P, 98P, 84P, 17P, 4P, 2P
Z74Amanecer de Arrakis Obs., 3 in MPEC 2013-R59 -- C/2012 F6, C/2011 L4, C/2010 S1
C60Argelander Institute for Astronomy Obs. (AIfA Obs.) in Germany, 2 in MPEC 2013-R59 -- C/2012 S1, C/2012 F6
H21Astronomical Research Obs. Westfield in Illinois, 27 in MPECs 2013-R56, 2013-R57 & 2013-R58 -- 2013 RY5, 2013 RY29, 2013 RV9, 2013 RU9, 2013 RT9, 2013 RS9, 2013 RR9, 2013 RQ5, 2013 RO5, 2013 RK16, 2013 RE6, 2013 RD6, 2013 RB6, 2013 RB30, 2013 RA6, 2013 QV1, 2013 QM10, 2013 QJ36, 2013 QJ10, 2013 QH11, 2013 QC11, 2013 PU13, 2013 PN43, 2013 PJ26, 2013 OM9, 2013 HG20, 86666
069Baldone Obs. in Latvia, 2 in MPEC 2013-R56 -- 2013 QH11, 2010 CF19
C77Bernezzo Obs. in Italy, 1 in MPEC 2013-R56 -- 2012 TS
C12Berta Obs. in Spain, 1 in MPEC 2013-R59 -- C/2012 F6
B88Bigmuskie Obs. in Italy, 1 in MPEC 2013-R56 -- 2013 QJ10
C86Blanes Obs. in Spain, 2 in MPEC 2013-R59 -- C/2011 L4, C/2010 S1
I99Blanquita Obs. in Spain, 7 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1, 154P
B96Brixiis Obs. in Belgium, 2 in MPEC 2013-R59 -- C/2012 K1, C/2012 F6
215Buchloe Obs. in Germany, 31 in MPEC 2013-R59 -- P/2013 P5, C/2013 P4, C/2013 P3, C/2013 P2, P/2013 P1, P/2013 O2, P/2013 N5, C/2012 U1, C/2012 S1, C/2012 J1, C/2012 A1, P/2011 S1, C/2011 L4, C/2009 S3, C/2008 FK75, 292P, 291P, 290P, 285P, 269P, 184P, 178P, 158P, 154P, 152P, 125P, 119P, 112P, 84P, 74P, 2P
G36CASADO in Spain, 2 in MPEC 2013-R59 -- 246P, 49P
235CAST Obs. in Italy, 2 in MPEC 2013-R59 -- C/2012 S1, 2P
U82CS3 Palmer Divide Station in southern California, 3 in MPEC 2013-R56 -- 2013 QJ10, 350988, 168378
W96Campo Catino Austral Obs. (CAO) in Chile, 11 in MPEC 2013-R59 -- C/2013 P4, C/2012 V2, C/2012 S1, P/2012 F2, C/2011 O1, C/2011 F1, C/2009 F4, 246P, 191P, 29P, 17P
B20Carmelita Obs. in Spain, 3 in MPEC 2013-R59 -- C/2012 S1, C/2012 K1, C/2010 S1
I72Carpe Noctem Obs., 9 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 K1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 257P, 2P
160Castelmartini Obs. in Italy, 8 in MPECs 2013-R56 & 2013-R59 -- 2013 RR9, P/2013 J2, C/2012 K1, C/2011 L4, C/2010 S1, 257P, 102P, 2P
703Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2013-R56, 2013-R57, 2013-R58 & 2013-R59 -- 2013 RY29, 2013 RV9, 2013 RB30, 2013 PX6, P/2013 P1, P/2013 O2, P/2013 J2, C/2012 S4, C/2008 S3, 2006 UD63, 2005 EF, 354182, 250697, 223456, 168378, 152664, 11398, 291P, 154P, 152P, 125P, 102P, 74P
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. in Chile, 1 in MPEC 2013-R56 -- 2013 RO5
A77Chante-Perdrix Obs. in France, 16 in MPEC 2013-R59 -- C/2013 P3, P/2013 J2, C/2013 E2, C/2012 K1, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, C/2008 S3, 257P, 154P, 102P, 98P, 84P, 26P, 2P
970Chelmsford Obs. in England, 1 in MPEC 2013-R59 -- 2P
J01Cielo Profundo Obs. in Spain, 12 in MPEC 2013-R59 -- P/2013 J2, C/2012 S3, C/2012 J1, C/2012 F6, C/2010 S1, 290P, 257P, 154P, 119P, 102P, 4P, 2P
850Cordell-Lorenz Obs. in Tennessee, 2 in MPEC 2013-R59 -- C/2012 S1, 154P
106Crni Vrh Obs. in Slovenia, 1 in MPEC 2013-R59 -- C/2013 E2
K20Danastro Obs., 6 in MPEC 2013-R59 -- P/2013 J2, C/2013 G8, C/2012 K8, C/2012 F6, C/2010 S1, 257P
448Desert Moon Obs. in New Mexico, 4 in MPEC 2013-R56 -- 2013 QN11, 2004 GD28, 294739, 155341
J19El Maestrat Obs. in Spain, 1 in MPEC 2013-R59 -- P/2013 J2
I57Elche Obs., 3 in MPEC 2013-R59 -- C/2012 S1, C/2012 F6, C/2010 S1
151Eschenberg Obs. in Switzerland, 2 in MPEC 2013-R56 -- 2013 PX6, 2001 QC34
Z81Estrella de Mar Obs., 1 in MPEC 2013-R56 -- 2013 QJ10
006Fabra Obs. in Spain, 1 in MPEC 2013-R59 -- C/2011 L4
E85Farm Cove Obs. in New Zealand, 1 in MPEC 2013-R59 -- 4P
E10(program code "(" (17) via Faulkes Telescope South in New South Wales, 1 in MPEC 2013-R59 -- C/2013 P4
E105Richard Miles in England via Faulkes Telescope South in New South Wales, 2 in MPEC 2013-R59 -- P/2013 P5, 17P
C18Frasnes-Lez-Anvaing Obs. in Belgium, 1 in MPEC 2013-R56 -- 250620
G26Fushan Obs., 1 in MPEC 2013-R59 -- C/2012 F6
C73Galati Obs. in Romania, 3 in MPEC 2013-R59 -- C/2012 S1, 154P, 2P
372Geisei Obs. in Japan, 5 in MPEC 2013-R59 -- C/2013 P3, P/2013 J2, C/2013 E2, C/2012 F6, 2P
203GiaGa Obs. in Italy, 1 in MPEC 2013-R58 -- 2013 RY29
B83Gieres Obs. in France, 10 in MPEC 2013-R59 -- P/2013 J2, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 257P, 184P, 102P, 84P, 2P
J95Great Shefford Obs. in England, 2 in MPECs 2013-R56 & 2013-R58 -- 2013 RY29, 2013 RR9
458Guadarrama Obs. in Spain, 2 in MPEC 2013-R59 -- C/2012 K1, C/2010 S1
511Haute Provence Obs. in Germany, 7 in MPEC 2013-R59 -- C/2013 P3, P/2013 J2, C/2012 F6, C/2011 L4, 257P, 154P, 102P
987Isle of Man Obs. on the Isle of Man, 1 in MPEC 2013-R59 -- C/2011 L4
C32Ka-Dar Obs. TAU Station in Russia, 4 in MPEC 2013-R59 -- C/2013 L2, 186P, 110P, 84P
K48Keyhole Obs., 1 in MPEC 2013-R59 -- P/2013 J2
585Kiev Comet Station in the Ukraine, 27 in MPEC 2013-R59 -- P/2013 J2, C/2013 G9, C/2013 G8, C/2013 G2, C/2013 E2, C/2012 S4, C/2012 S3, C/2012 K8, C/2012 K1, C/2012 F6, P/2012 F2, C/2012 A2, C/2011 R1, C/2011 L4, C/2011 KP36, C/2008 S3, 257P, 154P, 152P, 125P, 117P, 102P, 98P, 84P, 26P, 4P, 2P
046Klet Obs. in the Czech Republic, 1 in MPEC 2013-R56 -- 2013 OM9
D95Kurihara Obs. in Japan, 18 in MPEC 2013-R59 -- C/2013 N4, P/2013 J2, C/2013 G2, C/2013 F3, C/2013 E2, C/2012 S1, C/2012 LP26, C/2012 K1, C/2012 J1, C/2012 F6, C/2011 L4, C/2011 KP36, C/2010 S1, C/2008 S3, 125P, 98P, 26P, 2P
J87La Canada Obs. in Spain, 2 in MPEC 2013-R59 -- C/2012 S1, 184P
212La Dehesilla Obs. in Spain, 5 in MPEC 2013-R59 -- C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1, 98P
J38La Vara Obs. in Spain, 9 in MPEC 2013-R59 -- C/2013 E2, C/2012 S4, C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1, 154P, 102P, 2P
I36Los Campitos Obs. in Argentina, 1 in MPEC 2013-R59 -- 154P
130Lumezzane Obs. in Italy, 2 in MPEC 2013-R59 -- C/2013 P2, C/2013 G8
C10Maisoncelles Obs. in France, 11 in MPEC 2013-R59 -- P/2013 P5, C/2013 P4, C/2013 P3, C/2013 P2, P/2013 O2, C/2013 N4, C/2012 S1, 290P, 257P, 119P, 2P
232Masquefa Obs. in Spain, 2 in MPEC 2013-R59 -- C/2012 F6, C/2010 S1
A06Mataro Obs. in Spain, 3 in MPEC 2013-R59 -- C/2013 E2, C/2010 S1, 154P
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2013-R56 -- 2013 NG6, 2013 MV10
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2013-R56 & 2013-R59 -- 2013 RO21, P/2013 P5
B67Mirasteilas Obs. in Switzerland, 1 in MPEC 2013-R56 -- 2013 RO5
152Moletai Obs. in Lithuania, 2 in MPEC 2013-R59 -- C/2013 N4, C/2012 S1
213Montcabre Obs. in Spain, 10 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 S1, C/2012 K1, C/2011 L4, C/2010 S1, 102P, 84P, 4P, 2P
945Monte Deva Obs. in Spain, 7 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 K1, C/2012 F6, C/2011 L4, C/2010 S1, 154P
C91Montevenere Obs., 5 in MPEC 2013-R59 -- P/2013 J2, C/2012 S4, C/2012 F6, 257P, 102P
474Mt. John Obs. in New Zealand, 19 in MPECs 2013-R56, 2013-R57 & 2013-R59 -- 2013 RY5, 2013 RW5, 2013 RV5, 2013 RT9, 2013 RS5, 2013 RR5, 2013 RF, 2013 RE, 2013 RD6, 2013 RC6, 2013 RB30, 2013 RA6, 2013 QL10, 2013 QH17, 2013 QG17, 2013 QB11, C/2013 P4, P/2013 P1, C/2013 O3
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2013-R56 & 2013-R59 -- 2013 RU5, C/2013 P4, P/2013 P1, 141851
J93Mt. Tuffley Obs. in England, 2 in MPEC 2013-R59 -- C/2011 L4, C/2010 S1
E07Murrumbateman Obs. in New South Wales, 5 in MPEC 2013-R59 -- P/2013 P1, 282P, 246P, 191P, 17P
K15Murviel-les-Montpellier Obs., 5 in MPEC 2013-R59 -- P/2013 J2, C/2012 F6, C/2010 S1, 257P, 2P
D81Nagano Obs. in Japan, 1 in MPEC 2013-R59 -- C/2012 S1
A24New Millennium Obs. in Italy, 1 in MPEC 2013-R58 -- 2013 RY29
C47Nonndorf Obs. in Austria, 8 in MPEC 2013-R59 -- C/2013 E2, C/2012 S4, C/2012 K8, C/2012 F6, C/2012 A2, C/2011 L4, C/2010 S1, 102P
G34Oberfrauendorf Obs., 1 in MPEC 2013-R56 -- 137126
C23Olmen Obs. in Belgium, 25 in MPEC 2013-R59 -- C/2013 P3, P/2013 J2, C/2013 E2, C/2012 S4, C/2012 S3, C/2012 S1, C/2012 K8, C/2012 K1, C/2012 J1, C/2012 F6, C/2012 A2, C/2011 L4, C/2011 KP36, C/2010 U3, C/2010 S1, C/2008 S3, 290P, 257P, 154P, 119P, 102P, 84P, 26P, 4P, 2P
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2013-R59 -- 102P
B69Owls & Ravens Obs. in Germany, 3 in MPEC 2013-R59 -- C/2013 E2, C/2012 K1, C/2012 F6
I41Palomar Transient Factory (PTF) in southern California, 6 in MPECs 2013-R56 & 2013-R59 -- C/2013 P3, C/2012 A2, 2005 EF, 368664, 162566, 3361
F51Pan-STARRS 1 (PS1) in Hawaii, 13 in MPECs 2013-R56 & 2013-R59 -- P/2013 P5, C/2013 P3, C/2013 P2, 2013 AU76, C/2012 F6, C/2011 P2, 2006 QA58, 257P, 154P, 152P, 125P, 110P, 74P
B49Paus Obs. in Spain, 1 in MPEC 2013-R59 -- 257P
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 30 in MPECs 2013-R56 & 2013-R59 -- 2013 PX6, 2013 PV6, C/2013 P3, C/2013 P2, 2013 NX23, P/2013 J2, 2013 HG20, C/2013 F3, C/2013 E2, C/2012 S4, C/2012 K8, C/2012 J1, C/2012 F6, C/2012 A2, C/2011 KP36, C/2010 U3, C/2010 S1, C/2008 S3, C/2008 FK75, 2007 CN26, 329437, 290P, 257P, 184P, 154P, 119P, 102P, 84P, 4P, 2P
J53Posadas Obs. in Spain, 2 in MPEC 2013-R59 -- P/2013 J2, C/2012 F6
162Potenza Obs., 1 in MPEC 2013-R59 -- C/2012 F6
D90`Kevin Hills in England via RAS Obs. Moorook in South Australia, 8 in MPEC 2013-R59 -- C/2013 E2, P/2013 CU129, C/2012 S4, C/2012 K1, 292P, 257P, 119P, 98P
D03Rantiga Obs., 1 in MPEC 2013-R59 -- C/2012 S4
C95SATINO-1 in France, 2 in MPEC 2013-R59 -- C/2012 K1, C/2011 R1
Y00SONEAR Obs. in Brazil, 21 in MPECs 2013-R57 & 2013-R59 -- 2013 RB30, P/2013 P1, P/2013 J2, P/2013 G1, P/2013 CU129, C/2012 S4, C/2012 S3, C/2012 C1, C/2011 KP36, C/2010 S1, C/2008 S3, 175P, 154P, 152P, 117P, 98P, 74P, 29P, 26P, 17P, 4P
461SZTE Asteroid Program in Hungary, 6 in MPEC 2013-R59 -- P/2013 J2, C/2012 S1, C/2012 K1, 290P, 184P, 102P
434San Benedetto Po Obs. in Italy, 3 in MPEC 2013-R59 -- P/2013 J2, C/2012 K8, C/2010 S1
233San Vito Obs. in Italy, 4 in MPEC 2013-R59 -- C/2012 K8, C/2012 K1, C/2012 F6, 4P
H36Sandlot Obs. in Kansas, 3 in MPECs 2013-R56 & 2013-R59 -- 2013 QM10, 2013 PU31, 178P
B70Sant Celoni Obs. in Spain, 4 in MPEC 2013-R59 -- C/2012 S4, C/2012 F6, C/2012 A2, C/2010 S1
204Schiaparelli Obs. in Italy, 4 in MPECs 2013-R58 & 2013-R59 -- 2013 RY29, C/2013 N4, C/2012 S1, 290P
033Schwarzschild Obs. in Germany, 1 in MPEC 2013-R59 -- C/2013 P2
G401program code 1 via Slooh.com Canary Islands Obs. in the Canary Islands, 3 in MPEC 2013-R59 -- C/2012 S1, C/2010 S1, 154P
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 5 in MPEC 2013-R59 -- P/2013 J2, C/2012 F6, 257P, 154P, 152P
G403program code 3 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2013-R59 -- C/2012 S1
G404program code 4 via Slooh.com Canary Islands Obs. in the Canary Islands, 3 in MPEC 2013-R59 -- C/2012 S1, 154P, 2P
K90Sopot Obs., 1 in MPEC 2013-R59 -- C/2011 L4
691Spacewatch 0.9m telescope in Arizona, 4 in MPECs 2013-R56 & 2013-R59 -- C/2013 E2, 2003 RM, 363790, 106538
291Spacewatch 1.8m telescope in Arizona, 4 in MPEC 2013-R56 -- 2013 RW5, 2013 RV5, 2013 RN9, 2013 QK48
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2013-R58 -- 2013 RY29
C36Starry Wanderer Obs. in Belarus, 4 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 S1, 2P
A71Stixendorf Obs. in Austria, 6 in MPEC 2013-R59 -- C/2013 N4, C/2012 S1, 290P, 184P, 102P, 2P
I81Tarbatness Obs. in Scotland, 7 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 S1, C/2012 F6, 257P, 102P, 2P
A98Taurus-1 Obs. in Belarus, 2 in MPEC 2013-R59 -- C/2013 E2, C/2011 L4
C35Terrassa Obs., 14 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, C/2012 S4, C/2012 S1, C/2012 K8, C/2012 F6, C/2010 S1, 257P, 154P, 119P, 102P, 98P, 84P, 4P
B51Vallauris Obs. in France, 6 in MPEC 2013-R59 -- C/2013 P3, P/2013 J2, C/2012 S1, C/2012 F6, C/2011 L4, C/2010 S1
A48Verona Obs. in Italy, 5 in MPEC 2013-R56 -- 2013 QJ10, 2013 PN43, 2013 OM9, 2013 HG20, 2010 TN54
H47Vicksburg Obs. in Mississippi, 7 in MPEC 2013-R59 -- P/2013 J2, C/2013 E2, 290P, 257P, 154P, 119P, 2P
C90Vinyols Obs., 1 in MPEC 2013-R59 -- 154P
G56Walnut Creek Obs. in northern California, 2 in MPEC 2013-R56 -- 2013 QH11, 2013 PN43
C28Wellinghofen Obs. in Germany, 3 in MPEC 2013-R59 -- C/2012 F6, C/2011 L4, 154P
I42Westport Obs. in Massachusetts, 3 in MPEC 2013-R56 -- 2013 OM9, 2013 BO76, 2012 TS
C42Xingming Obs. in China, 2 in MPEC 2013-R59 -- C/2012 S1, 2P
J08Zonalunar Obs. in Spain, 1 in MPEC 2013-R59 -- C/2012 F6
A79Zvezdno Obshtestvo Obs. in Bulgaria, 2 in MPECs 2013-R56 & 2013-R57 -- 2013 RK21, 2013 RB30
H06*Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2013-R59 -- C/2013 P3
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2013-R59 -- C/2011 P2, 276P
Q62+program code "+" (20) via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2013-R56 -- 137126
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 16 in MPECs 2013-R57 & 2013-R59 -- 2013 RB30, P/2013 P5, C/2013 P4, C/2013 O3, P/2013 N5, C/2013 H1, C/2013 G7, P/2013 CU129, C/2012 V2, C/2012 L2, C/2012 K6, P/2012 B1, C/2009 F4, 292P, 285P, 63P
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 RN21NEODyS15372056-206627.72e-10-7.61-7.70NEODyS: "Based on 10 optical observations (of which 0 are rejected as outliers) from 2013-09-04.460 to 2013-09-05.384."
2013 RV9JPL Sentry1537R E M O V E DJPL: Risk listing removed at 1213 UTC.
2013 RU9JPL Sentry1537R E M O V E DJPL: Risk listing removed at 1210 UTC.
2013 RN9JPL Sentry1537R E M O V E DJPL: Risk listing removed at 1212 UTC.
2013 RA6JPL Sentry15372107-210925.0e-09-8.62-8.660JPL: "Analysis based on 19 observations spanning 3.2394 days (2013-Sep-02.22615 to 2013-Sep-05.46553)." Diameter approximately 0.034 km. from mean, weighted H=25.0.
2013 RFJPL Sentry1537209721.3e-07-5.84-6.050JPL: "Analysis based on 59 observations spanning 6.1391 days (2013-Aug-30.43539 to 2013-Sep-05.574479)." Diameter approximately 0.093 km. from mean, weighted H=22.8.
NEODyS1537R 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 6 September '13

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

0018 9/7Grabbed MPEC 2013-R59 - Observations and Orbits of Comets - see above
2324Grabbed MPEC 2013-R57 - 2013 RB30 - see above
Grabbed MPEC 2013-R58 - 2013 RY29 - see above
1549Generated Traffic Report
1537Noted that JPL Sentry has updated its 2013 RA6 risk assessment - see above
Noted that JPL Sentry has updated its 2013 RF risk assessment - see above
Noted that NEODyS has removed 2013 RF as an impact risk - see above
Noted that NEODyS has posted 2013 RN21 as an impact risk - see above
Noted that JPL Sentry has removed 2013 RN9 as an impact risk - see above
Noted that JPL Sentry has removed 2013 RU9 as an impact risk - see above
Noted that JPL Sentry has removed 2013 RV9 as an impact risk - see above
Grabbed MPEC 2013-R56 - Daily Orbit Update - see above