Contents  on 13 February '18

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 13 February '18

Seven objects reported inside ten LD

Bulletin - 2258 UTC:  One new discovery of a close passer has been announced. This will be included in our next traffic report.

Earth passageI D~Size~Inside ten LDNotes
6.75 LD at 2336 today2018 CR326 m yesterday - Feb. 16MPEC


There are seven asteroidal objects reported within ten lunar distances (LD) of our home world today. Nearest is 2018 CH2, which is outbound from 2.11 to 3.27 LD as it passes the Moon by 2.38 LD at 0151 UTC and leaves Earth's sphere of gravitational influence.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.18 LD Feb. 9 2018 CB 22 m  4.51 to 5.96 LD Feb. 3 - 16 intruder, NHATS target
0.9   LD Feb. 15* 2018 CD3 7 m  3.2 from 4.9 LD Feb. 9 - 21 EPU +/- 14 mins.*, intruder
2.04 LD yesterday 2018 CH2 8 m  2.11 to 3.27 LD Feb. 7 - 17 Moon closest 2.38 LD at 0151 UTC
2.23 LD Feb. 15 2018 CU2 9 m  3.23 from 4.87 LD Feb. 10 - 20
5.65 LD Feb. 11 2018 CX 31 m  6.29 to 7.71 LD Feb. 8 - 15
6.50 LD Feb. 11 2018 CB2 34 m  8.30 to 10.81 LD Feb. 9 - 13 exits ten LD - DOU
6.66 LD Jan. 15 2018 AV2 6 m  7.90 to 7.99 LD Nov. 10 - March 2 NHATS target, natural?

This report was generated at 1816 UTC with first follow-up for outbound 2018 CB2 and departed intruder 2018 CS1 in today's DOU MPEC along with continuing follow-up for approaching 2017 VR12 and distant 208023 1999 AQ10.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
9.62 LD Feb. 15 2018 CB1 27 m  10.09 from 11.13 LD tomorrow - Feb. 16
6.08 LD Feb. 19 2018 CP2 46 m  15.83 from 18.20 LD Feb. 16 - 22
3.7   LD Feb. 24* 2017 DR109 10 m  17.4 from 19.0 LD Feb. 18 - March 1 EPU +/- 30 mins.*, NHATS target
9.26 LD Feb. 20 2018 CJ 63 m  23.72 from 26.97 LD Feb. 19 - 21
3.76 LD March 7 2017 VR12 265 m  29.87 from 31.20 LD Feb. 28 - March 13 radar/NHATS target - DOU
6.9   LD March 10* 2015 DK200 26 m  45.9 from 47.9 LD March 6 - 14 EPU +/- 23.45 hours*, NHATS target
* EPU = Earth passage uncertainty



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's 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. "Distant" is used here to describe an object that has come within ten LD since A/CC began these traffic reports (2007) but is not presently so close. Object temporal 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 13 February '18

The MPC's NEO Confirmation Page has 73 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 73 objects listed. Of these, 32 were "one nighters." So far The Tracking News has counted a total of 88 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 13 February '18

Minor Planet Electronic Circulars

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


MPEC 2018-C103 - "21:42 UT" - 2018 CT3


MPEC 2018-C102 - "21:39 UT" - 2018 CS3


MPEC 2018-C101 - "21:35 UT" - 2018 CR3


MPEC 2018-C100 - "21:31 UT" - 2018 CQ3


MPEC 2018-C99 - "21:23 UT" - 2018 CP3


<< DOU on 13 Feb. '18 >>  MPEC 2018-C98 - "13:06 UT" - Daily Orbit Update

Observers  on 13 February '18

A total of 33 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 13 in MPECs 2018-C98 & 2018-C102 -- 2018 CS3, 2018 CS1, 2018 BM3, 2018 AL3, 2018 AL2, 2017 WX12, 2017 MB1, 2000 WY28, 349219, 276392, 247156, 162698, 159609
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2018-C98 -- 507366
T08ATLAS Mauna Loa in Hawaii, 26 in MPECs 2018-C98 & 2018-C103 -- 2018 CT3, 2017 QL33, 2016 BA39, 2015 NJ3, 96315, 53110, 509935, 508871, 505667, 455659, 385580, 348314, 242708, 208023, 17511, 162038, 154347, 143992, 137805, 12711, 8567, 8037, 7977, 6053, 2202, 1980
160Castelmartini Obs. in Italy, 7 in MPEC 2018-C98 -- 2017 SR32, 2005 BS27, 311554, 190208, 162038, 143992, 6053
K65Cesena Obs. in Italy, 1 in MPEC 2018-C100 -- 2018 CQ3
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2018-C100 -- 2018 CQ3
006Fabra Obs. in Spain, 2 in MPEC 2018-C98 -- 505657, 6053
734Farpoint Obs. in Kansas, 2 in MPECs 2018-C101 & 2018-C102 -- 2018 CS3, 2018 CR3
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2018-C99 & 2018-C100 -- 2018 CQ3, 2018 CP3
J95Great Shefford Obs. in England, 4 in MPECs 2018-C98, 2018-C100, 2018-C101 & 2018-C103 -- 2018 CT3, 2018 CR3, 2018 CQ3, 2018 CB2
A17Guidestar Obs. in Germany, 2 in MPECs 2018-C98 & 2018-C100 -- 2018 CQ3, 2018 BB7
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2018-C98 -- 385580
H06#M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-C103 -- 2018 CT3
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2018-C103 -- 2018 CT3
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 3 in MPECs 2018-C98, 2018-C100 & 2018-C103 -- 2018 CT3, 2018 CT2, 2018 CQ3
K30Luscherz Obs. in Switzerland, 1 in MPEC 2018-C98 -- 2018 BA7
474Mt. John Obs. in New Zealand, 1 in MPEC 2018-C101 -- 2018 CR3
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2018-C99 & 2018-C100 -- 2018 CQ3, 2018 CP3
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2018-C100 -- 2018 CQ3
Z80Northolt Branch Obs. in England, 3 in MPEC 2018-C98 -- 2017 VR12, 2017 SR32, 2004 CK39
G34Oberfrauendorf Obs. in Germany, 3 in MPEC 2018-C98 -- 2018 CY2, 2017 SR32, 2016 BA39
F51Pan-STARRS 1 (PS1) in Hawaii, 37 in MPECs 2018-C98, 2018-C99, 2018-C100, 2018-C101 & 2018-C102 -- 2018 CS3, 2018 CR3, 2018 CQ3, 2018 CP3, 2018 BS, 2017 XB2, 2017 SL33, 2017 QL33, 2017 QJ18, 2016 CW31, 2016 BD1, 2015 NJ3, 2015 FO124, 2012 PC20, 2011 JX1, 2011 EF15, 2009 EV, 2002 CY58, 52760, 443923, 424482, 386847, 35432, 330825, 322763, 276392, 267223, 246138, 232691, 163691, 162011, 159923, 153958, 152563, 143992, 5620, 1916
K63Pascoli Obs. in Italy, 1 in MPEC 2018-C100 -- 2018 CQ3
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2018-C99 -- 2018 CP3
204Schiaparelli Obs. in Italy, 1 in MPEC 2018-C99 -- 2018 CP3
W88"program code '"' (11) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-C103 -- 2018 CT3
691Spacewatch 0.9m telescope in Arizona, 2 in MPECs 2018-C100 & 2018-C101 -- 2018 CR3, 2018 CQ3
I52Steward Obs. Mt. Lemmon Station in Arizona, 1 in MPEC 2018-C100 -- 2018 CQ3
Z52The Studios Obs., 2 in MPEC 2018-C98 -- 36284, 1864
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPEC 2018-C98 -- 2018 AE3, 2017 YF5
L01Visnjan Obs., 2 in MPECs 2018-C99 & 2018-C100 -- 2018 CQ3, 2018 CP3
I15Wishing Star Obs. in Rhode Island, 9 in MPEC 2018-C98 -- 2016 CL32, 2011 MU, 2004 CK39, 36284, 348314, 208023, 137052, 12711, 1980
C42Xingming Obs. in China, 1 in MPEC 2018-C99 -- 2018 CP3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 13 February '18

At last check (NEODyS 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 13 February '18

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

2255Grabbed MPEC 2018-C99 - 2018 CP3 - see above
Grabbed MPEC 2018-C100 - 2018 CQ3 - see above
Grabbed MPEC 2018-C101 - 2018 CR3 - see above
Grabbed MPEC 2018-C102 - 2018 CS3 - see above
Grabbed MPEC 2018-C103 - 2018 CT3 - see above
1816Generated Traffic Report
1620Grabbed MPEC 2018-C98 - Daily Orbit Update - see above