Contents on 24 January '13
- Traffic Report -- one object
- IAU Minor Planet Center
- Observers -- fifteen observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 476 risk-listed objects, 29 have had news in the last 31 days. Updated at 1730 UTC on 24 Jan.
- 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 10 Jan.
- Observing Campaigns
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 24 January '13
One object reported inside ten LD
One asteroid is reported to be inside a radius of ten lunar distances (LD) from our planet today. 2013 BT15 is outbound from 6.55 to 7.75 LD.
Headed our way next, 2013 BS45 comes inside ten LD on January 30th, and 2013 BV15 and intruder 2012 DA14 (risk-listed radar target) arrive on February 8th.
This report was generated at 1732 UTC with follow-up in today's DOU MPEC for 2013 BS45 and departed 2013 BL18.
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 24 January '13
The MPC's NEO Confirmation Page has 8 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had eight objects listed. Of these, three were "one nighters." So far The Tracking News has counted a total of eleven 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 24 January '13
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there have been three MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- MPEC 2013-B85 time-stamped "00:57 UT" - 2013 BQ45 - see below
- MPEC 2013-B86 time-stamped "06:04 UT" - Daily Orbit Update - see below
- MPEC 2013-B87 time-stamped "15:00 UT" - 2007 NQ
MPEC 2013-B87 - "15:00 UT" - 2007 NQ
- K07N00Q 2007 NQ (H=19.4 ~446m) from David Tholen's team on Mauna Kea (2010 March 24.44-45p3 at R=22.3-4 & Jan. 12.50-51p2 at R=23.5)
- Observations of risk-listed objects
- K13B18L 2013 BL18 (small asteroid, arc=6 days, H=25.9 ~22m, close passer) from Robert Holmes via Cerro Tololo Inter-American Obs. (CTIO) (Jan. 23.28p2)
- 99942 99942 Apophis (2004 MN4) (PMD, radar support) from Saint-Barthelemy Obs. (Jan. 22.90-93p5)
- Observations of close-passing objects
- K13B45S 2013 BS45 (arc=2 days, H=25.7 ~25m) from McDonald Obs. (Jan. 22.48-50p3)
- Observations of small (H>22.0) & smallish (21.7<H<=22.0) asteroids
- K13B70D 2013 BD70 (Q=4.051 AU, arc=1 day, H=22.4 ~112m) from Kevin Hills via RAS Obs. Moorook (Jan. 23.75-76p3)
- K13B27O 2013 BO27 (arc=3 days, H=24.0 ~54m) from Holmes/CTIO (Jan. 23.21-22p3)
- K13B18P 2013 BP18 (arc=5 days, H=22.8 ~93m) from Holmes/CTIO (Jan. 23.03-04p5)
- K13B18N 2013 BN18 (arc=6 days, H=24.7 ~39m) from Holmes/CTIO (Jan. 23.33-34p5)
- K13B02W 2013 BW2 (arc=7 days, H=23.4 ~71m) from Holmes/CTIO (Jan. 23.25-26p5)
- K13B02U 2013 BU2 (arc=7 days, H=22.7 ~98m) from Holmes/CTIO (Jan. 23.03-04p5)
- K13A27Q 2013 AQ27 (arc=16 days, H=24.4 ~45m) from the Mt. Lemmon Survey (MLS) (Jan. 22.42-44p4 & 22.49p4) and Sandlot Obs. (Jan. 23.22-23p3)
- K12XD3D 2012 XD133 (arc=42 days, H=22.3 ~117m) from Holmes/CTIO (Jan. 23.16-18p3)
- K12X55Q 2012 XQ55 (arc=45 days, H=23.0 ~85m) from Holmes/CTIO (Jan. 23.30-32p5)
- K13B45Z 2013 BZ45 (arc=3 days, H=21.9 ~141m) from LCOGT Cerro Tololo A (Jan. 22.35-36p4)
- Observations of other asteroidal objects
- K13B45Q 2013 BQ45 (arc=2 opp, H=18.5 ~676m) from NEAT's Mt. Palomar telescope (2002 Feb. 12.32-36p3)
- K13A76T 2013 AT76 (i=36.5°, Q=4.857 AU, arc=10 days, H=20.1 ~323m) from Desert Moon Obs. (Jan. 23.34-36p5)
- K13A60W 2013 AW60 (arc=14 days, H=18.7 ~616m) from Desert Moon Obs. (Jan. 23.44-46p3)
- K13A60O 2013 AO60 (Q=4.110 AU, arc=15 days, H=21.4 ~178m) from Desert Moon Obs. (Jan. 23.49-54p3)
- K13A52Y 2013 AY52 (arc=17 days, H=19.8 ~371m) from Desert Moon Obs. (Jan. 23.41-43p3)
- K13A52W 2013 AW52 (arc=17 days, H=19.7 ~389m) from Desert Moon Obs. (Jan. 23.37-39p3)
- K12X55C 2012 XC55 (arc=48 days, H=19.4 ~446m) from Holmes/CTIO (Jan. 23.03-04p3)
- K12Q50E 2012 QE50 (arc=148 days, H=18.9 ~562m) from Holmes/CTIO (Jan. 23.36-38p5)
- K12P28P 2012 PP28 (arc=162 days, H=19.3 ~467m) from Holmes/CTIO (Jan. 23.36-38p5)
- K11K15W 2011 KW15 (arc=3 opp, H=19.5 ~426m) from Cordoba Obs. (Jan. 24.11p3)
- K07A12G 2007 AG12 (i=42.0°, arc=4 opp, H=19.6 ~407m) from MLS (Jan. 23.28-29p4)
- K02P80H 2002 PH80 (arc=3 opp, H=19.5 ~426m) from Nordic Near-Earth-Object Network (NEON) (2005 June 2.95-99p6)
- Y9068 349068 2006 YT13 from Montcabre Obs. (Jan. 23.74-80p3)
- X8172 338172 2002 RV112 from Pan-STARRS 1 (PS1) (Jan. 22.51-52p2)
- V3809 313809 2004 BH41 from Desert Moon Obs. (Jan. 23.27-31p3)
- A8519 108519 2001 LF from PS1 (Jan. 22.51-52p2)
- 24761 24761 Ahau (1993 BW2) from Wishing Star Obs. (Jan. 24.02p2)
- 03288 3288 Seleucus (1982 DV) from MLS (Jan. 23.15-17p4)
MPEC 2013-B85 - "00:57 UT" - 2013 BQ45
- K13B45Q 2013 BQ45 (H=18.5 ~676m) from NEAT/Palomar (2002 Feb. 2.50-55p6 & 2002 March 3.15-17p2)
Observers on 24 January '13
Fifteen observers appear in today's MPECs.
|Code||Observer / observatory|
|807|||Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 11 in MPEC 2013-B86 -- 2013 BW2, 2013 BU2, 2013 BP18, 2013 BO27, 2013 BN18, 2013 BL18, 2012 XQ55, 2012 XD133, 2012 XC55, 2012 QE50, 2012 PP28|
|822||Cordoba Obs. in Argentina, 1 in MPEC 2013-B86 -- 2011 KW15|
|448||Desert Moon Obs. in New Mexico, 6 in MPEC 2013-B86 -- 2013 AY52, 2013 AW60, 2013 AW52, 2013 AT76, 2013 AO60, 313809|
|W85||LCOGT Cerro Tololo A in Chile, 1 in MPEC 2013-B86 -- 2013 BZ45|
|5682||David Tholen's team on Mauna Kea in Hawaii, 1 in MPEC 2013-B87 -- 2007 NQ|
|711||McDonald Obs. in Texas, 1 in MPEC 2013-B86 -- 2013 BS45|
|213||Montcabre Obs. in Spain, 1 in MPEC 2013-B86 -- 349068|
|G96||Mt. Lemmon Survey (MLS) in Arizona, 3 in MPEC 2013-B86 -- 2013 AQ27, 2007 AG12, 3288|
|644||NEAT's Mt. Palomar telescope in southern California, 1 in MPECs 2013-B85 & 2013-B86 -- 2013 BQ45|
|J50||Nordic Near-Earth-Object Network, 1 in MPEC 2013-B86 -- 2002 PH80|
|F51||Pan-STARRS 1 (PS1) in Hawaii, 2 in MPEC 2013-B86 -- 338172, 108519|
|D90`||Kevin Hills in England via RAS Obs. Moorook in South Australia, 1 in MPEC 2013-B86 -- 2013 BD70|
|B04||Saint-Barthelemy Obs. in Italy, 1 in MPEC 2013-B86 -- 99942|
|H36||Sandlot Obs. in Kansas, 1 in MPEC 2013-B86 -- 2013 AQ27|
|I15||Wishing Star Obs. in Rhode Island, 1 in MPEC 2013-B86 -- 24761|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 24 January '13
Notes for Today's Latest Risk Assessments
|2013 BL18||JPL Sentry||1730||2070-2092||5||9.4e-06||-5.58||-5.80||0||JPL: "Analysis based on 27 observations spanning 5.9997 days (2013-Jan-17.28384 to 2013-Jan-23.28354)." Diameter approximately 0.022 km. from mean, weighted H=26.0.|
|NEODyS||1730||2070-2092||5||1.53e-05||-5.37||-5.54||0||NEODyS: "Based on 27 optical observations (of which 1 are rejected as outliers) from 2013-01-17.285 to 2013-01-23.284."|
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 24 January '13
Times are UTC for when items were noted or added by The Tracking News.
|1732||Generated Traffic Report|
|1730||Noted that JPL Sentry has updated its 2013 BL18 risk assessment - see above|
Noted that NEODyS has updated its 2013 BL18 risk assessment - see above
Grabbed MPEC 2013-B86 - Daily Orbit Update - see above
Grabbed MPEC 2013-B87 - 2007 NQ - see above
|0109||Grabbed MPEC 2013-B85 - 2013 BQ45 - see above|