Contents  on 14 January '17

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 14 January '17

Two objects reported inside ten LD

Two visitors are known to be traveling within ten lunar distances (LD) of Earth today. 2017 AJ13 comes its closest to Earth on this passage -- 6.71 LD at 1053 UTC, and NHATS target 2017 AZ3 exits our ten-LD traffic reporting zone, sliding out from 8.93 to 10.21 LD. On approach next, NHATS target 2016 YC8 comes inside ten LD on January 16th.

This report was generated at 1842 UTC with follow-up in today's DOU MPEC for 2017 AJ13, 2016 YC8, and departed NHATS target 2017 AG5,.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting on transient natural objects that approach the actually significant gravitational sphere of influence (SOI), which has a radius of about 2.41 LD from Earth's center. This puts a focus on some of the most important and very best NEO observation work, representative of the much larger NEO discovery and tracking effort. Object distances are derived 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 14 January '17

The MPC's NEO Confirmation Page has 52 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 52 objects listed. Of these, twelve were "one nighters." So far The Tracking News has counted a total of 56 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 14 January '17

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there has been one MPEC posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 14 Jan. '17 >>  MPEC 2017-A81 - "13:13 UT" - Daily Orbit Update

Observers  on 14 January '17

Fourteen observers appear in today's MPEC.

CodeObserver / observatory
705"Kristie Nault via Apache Point Obs. in New Mexico, 1 in MPEC 2017-A81 -- 2016 WP55
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2017-A81 -- 2016 PZ66
T05ATLAS Haleakala in Hawaii, 5 in MPEC 2017-A81 -- 2016 PR8, 96590, 203471, 5653, 2102
K46Bamberg Obs. in Germany, 1 in MPEC 2017-A81 -- 1036
160Castelmartini Obs. in Italy, 13 in MPEC 2017-A81 -- 2016 YF11, 2016 PR8, 90075, 475665, 370307, 34613, 262623, 203471, 153951, 13651, 11398, 5693, 5626
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 8 in MPEC 2017-A81 -- 2017 AV3, 2017 AP13, 2017 AK4, 2017 AD3, 2016 YM1, 2016 YJ3, 2016 UJ101, 2016 TA56
203GiaGa Obs. in Italy, 5 in MPEC 2017-A81 -- 2017 AG5, 2016 YT8, 2016 YC8, 2016 QN11, 2016 NL15
J95Great Shefford Obs. in England, 2 in MPEC 2017-A81 -- 2017 AJ13, 2017 AG5
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2017-A81 -- 2011 SR12
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2017-A81 -- 2016 YM
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2017-A81 -- 4179
W34Squirrel Valley Obs. in North Carolina, 2 in MPEC 2017-A81 -- 96590, 3352
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2017-A81 -- 2016 VU2, 2015 XF261
C51WISE in Earth polar orbit, 4 in MPEC 2017-A81 -- 418094, 378610, 370307, 4179
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 January '17

At last check (NEODyS and JPL at 2358 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 14 January '17

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

1842Generated Traffic Report
1615Grabbed MPEC 2017-A81 - Daily Orbit Update - see above