Contents  on 4 March '15

Asteroid/Comet Connection (A/CC) Resources:

The latest A/CC news is available via framed access, RSS news feed RSS news feed, or redirection.

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. To keep track of what's new each day, watch the Chronology section.

Traffic Report  on 4 March '15

Five objects reported inside ten LD

Today five visitors are reported inside a radius from our planet of ten lunar distances (LD). 2015 DO215 is outbound from 3.42 to 4.07 LD, 2015 DS53 from 4.83 to 7.58 LD, NHATS target 2015 DU from 8.74 to 8.92 LD, and 2015 DY198 leaves our ten-LD reporting "bubble," traveling from 9.46 to 13.04 LD, while 2015 DK200 comes inside the bubble, passing from 10.43 to 9.07 LD. No other objects are presently known to come this close until mid-July

This report was generated at 1624 UTC with first follow-up for NHATS target 2015 DK200 in today's DOU MPEC along with follow-up for departed NHATS target 2015 CA40.

Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but puts a focus on transient natural objects that have recently approached the actually significant gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center, and thus also puts a focus on some of the most important and very best NEO observation work. 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 4 March '15

The MPC's NEO Confirmation Page has 68 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 68 objects listed. Of these, 36 were "one nighters." So far The Tracking News has counted a total of 72 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 4 March '15

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.

<< DOU on 4 Mar. '15 >>  MPEC 2015-E15 - "12:13 UT" - Daily Orbit Update

Observers  on 4 March '15

Seven observers appear in today's MPEC.

CodeObserver / observatory
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 22 in MPEC 2015-E15 -- 2015 CA40, 2015 BV92, 2014 US, 2010 TL117, 2009 VZ, 54686, 53426, 424089, 423709, 419829, 416071, 385252, 337069, 27346, 249886, 242450, 171576, 163250, 162080, 159686, 159459, 154029
J95Great Shefford Obs. in England, 1 in MPEC 2015-E15 -- 2015 DM215
C94MASTER-II Obs. Tunka in Russia, 1 in MPEC 2015-E15 -- 22771
5682David Tholen's team on Mauna Kea in Hawaii, 2 in MPEC 2015-E15 -- 2015 DK200, 2015 DB1
C47Nonndorf Obs. in Austria, 1 in MPEC 2015-E15 -- 2014 YB35
J69North Obs. in England, 1 in MPEC 2015-E15 -- 2014 EK24
F51Pan-STARRS 1 (PS1) in Hawaii, 4 in MPEC 2015-E15 -- 2015 BR510, 90367, 154035, 8176
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 4 March '15

At last check (NEODyS and JPL at 2359 UTC) there was no risk monitoring news to report yet today. Visit the CRT to view activity in the last four weeks and our ephemerides page for a complete list of risk-rated objects under current observation or having recent news.

Chronology  on 4 March '15

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

1624Generated Traffic Report
1556Grabbed MPEC 2015-E15 - Daily Orbit Update - see above