Contents on 24 June '13
- Traffic Report -- no objects
- IAU Minor Planet Center
- Observers -- seven observers
- Impact Risk Monitoring -- one object
Asteroid/Comet Connection (A/CC) Resources:
- Consolidated Risk Tables - the CRT page (archive)
Of 504 risk-listed objects, 14 have had news in the last 31 days. Updated at 1435 UTC on 24 June.
- 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 20 Feb.
- 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 June '13
No objects reported inside ten LD
No natural objects are reported to be passing within ten lunar distances (LD) of Earth today, and none are known to be coming inside ten LD until late July.
This report was generated at 1436 UTC.
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 June '13
The MPC's NEO Confirmation Page has 4 listings
When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had four objects listed. So far The Tracking News has counted a total of twelve 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 June '13
Minor Planet Electronic Circulars
As of last check at 2359 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.
- Observations of risk-listed objects
- K13M03L 2013 ML3 (small asteroid, arc=2 days, H=22.1 ~129m) from Astronomical Research Obs. Westfield (June 21.11-12p3)
- Observation campaigns (radar support, potential mission destinations)
- S5263 285263 1998 QE2 (radar) from West Park Obs. (June 17.99p5), Montcabre Obs. (June 22.90p1, 22.95p1 & 23.08p1), and Terrassa Obs. (June 22.98-02p11)
- G3249 163249 2002 GT (PMD) from Estrella de Mar Obs. (June 21.91p1, 21.98p1 & 22.05p1)
-- Potential mission destinations list & ephemerides + NHATS -- Planetary radar schedules: Arecibo & Goldstone
- Observations of other asteroidal objects
- K13L31N 2013 LN31 (Q=4.060 AU, arc=9 days, H=20.0 ~339m) from SATINO-1 (June 23.87-89p4)
- K13L31K 2013 LK31 (arc=9 days, H=19.2 ~490m) from ARO Westfield (June 21.14-15p3) and Desert Moon Obs. (June 23.19-21p3)
- K13L01B 2013 LB1 (arc=22 days, H=17.5 ~1.07 km) from Desert Moon Obs. (June 23.40-43p3)
- H0013 170013 2002 UO3 from Estrella de Mar Obs. (June 22.90-96p3)
Observers on 24 June '13
Seven observers appear in today's MPEC.
|Code||Observer / observatory|
|H21||Astronomical Research Obs. Westfield in Illinois, 2 in MPEC 2013-M37 -- 2013 ML3, 2013 LK31|
|448||Desert Moon Obs. in New Mexico, 2 in MPEC 2013-M37 -- 2013 LK31, 2013 LB1|
|Z81||Estrella de Mar Obs., 2 in MPEC 2013-M37 -- 170013, 163249|
|213||Montcabre Obs. in Spain, 1 in MPEC 2013-M37 -- 285263|
|C95||SATINO-1 in France, 1 in MPEC 2013-M37 -- 2013 LN31|
|C35||Terrassa Obs., 1 in MPEC 2013-M37 -- 285263|
|Z92||West Park Obs., 1 in MPEC 2013-M37 -- 285263|
|For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.|
Impact Risk Monitoring on 24 June '13
Notes for Today's Latest Risk Assessments
|2013 ML3||JPL Sentry||1431||2109||4||3.9e-07||-5.36||-5.77||0||JPL: "Analysis based on 48 observations spanning 1.8534 days (2013-Jun-19.27039 to 2013-Jun-21.12379)." Diameter approximately 0.130 km. from mean, weighted H=22.1.|
|NEODyS||1431||2076-2109||4||2.56e-07||-5.55||-5.85||0||NEODyS: "Based on 51 optical observations (of which 3 are rejected as outliers) from 2013-06-19.271 to 2013-06-21.125."|
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 June '13
Times are UTC for when items were noted or added by The Tracking News.
|1436||Generated Traffic Report|
|1431||Noted that JPL Sentry has updated its 2013 ML3 risk assessment - see above|
Noted that NEODyS has updated its 2013 ML3 risk assessment - see above
Grabbed MPEC 2013-M37 - Daily Orbit Update - see above