Contents  on 25 January '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 25 January '18

Ten objects reported inside ten LD

There are ten Solar-System small bodies known to be within ten lunar distances (LD) of Earth today. Nearest are risk-listed intruder 2018 BC, which heads away from 2.75 to 3.23 LD, and 2018 BA3, outbound from 3.02 to 3.60 LD.

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
0.73 LD Jan. 19 2018 BX 5 m  6.44 to 7.69 LD Jan. 12 - 27 intruder, NHATS target
0.73 LD Jan. 19 2018 BC 4 m  2.75 to 3.23 LD Dec. 30 - Feb. 9 intruder, NHATS target, risk
1.19 LD Jan. 20 2018 BP3 6 m  7.71 to 9.27 LD Jan. 13 - 26 NHATS target, risk - DOU
3.01 LD yesterday 2018 BA3 20 m  3.02 to 3.60 LD Jan. 19 - 30 DOU
3.06 LD Jan. 27 2018 BU1 42 m  4.33 from 6.39 LD Jan. 23 - 30 DOU
4.64 LD Jan. 23 2018 AJ 40 m  5.00 to 5.58 LD Jan. 16 - 30 NHATS target
4.83 LD tomorrow 2018 BM5 11 m  4.88 from 5.56 LD Jan. 22 - 30 NEW - MPEC
6.7   LD Jan. 15* 2018 AV2 6 m  6.8 to 6.8 LD Nov. 10 - March 2 EPU +/- 9 mins.*, NHATS target, natural?
8.10 LD tomorrow 2018 AL12 36 m  8.11 from 9.44 LD yesterday - Jan. 27 DOU
9.27 LD Jan. 27 2018 BQ 26 m  9.35 from 9.47 LD Jan. 22 - Feb. 1 NHATS target - DOU

This report was updated at 2246 UTC with the discoveries of inbound 2018 BM5 (MPEC) and four objects that have already departed: On January 20th 2018 BQ5 (MPEC) went by us at 5.12 LD and 2018 BD5 (MPEC) at 6.61 LD. A day earlier 2018 BF5 (MPEC) passed at 8.76 LD. And 2018 BO5 (MPEC) slipped past at about 8.6 LD on January 13th.
        Your first local flying rocks traffic report was generated at 1920 UTC with first follow-up for outbound risk-listed 2018 BP3 in today's DOU MPEC along with continuing follow-up for approaching 2018 AH12, inbound objects 2018 BU1, 2018 BQ, and 2018 AL12, outbound 2018 BA3, and four departed objects: 2018 BH3, 2018 BW1, 2017 YH1, and intruder 2018 AH, plus distant 208023 1999 AQ10.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
5.31 LD Feb. 4 2018 AH12 14 m  12.12 from 13.18 LD Jan. 28 - Feb. 12 NHATS target - DOU
3.7   LD Feb. 24* 2017 DR109 10 m  52.1 from 54.2 LD Feb. 18 - March 1 EPU +/- 30 mins.*, NHATS target
3.76 LD March 7 2017 VR12 269 m  54.74 from 56.02 LD Feb. 28 - March 13 radar/NHATS target
6.9   LD March 10* 2015 DK200 26 m  89.7 from 92.3 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. 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 25 January '18

The MPC's NEO Confirmation Page has 72 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 72 objects listed. Of these, 43 were "one nighters." So far The Tracking News has counted a total of 110 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 25 January '18

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 22 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2018-B136 - "20:39 UT" - 2018 BH5


MPEC 2018-B135 - "20:34 UT" - 2018 BQ5


MPEC 2018-B134 - "20:29 UT" - 2018 BE5


MPEC 2018-B133 - "20:25 UT" - 2018 BP5


MPEC 2018-B132 - "20:19 UT" - 2018 BO5


MPEC 2018-B131 - "20:15 UT" - 2018 BN5


MPEC 2018-B130 - "20:10 UT" - 2018 BM5


MPEC 2018-B129 - "20:05 UT" - 2018 BL5


MPEC 2018-B128 - "19:58 UT" - 2018 BK5


MPEC 2018-B127 - "19:55 UT" - 2018 BJ5


MPEC 2018-B126 - "19:52 UT" - 2018 BG5


MPEC 2018-B125 - "19:48 UT" - 2018 BF5


MPEC 2018-B124 - "19:44 UT" - 2018 BD5


MPEC 2018-B123 - "19:40 UT" - 2018 BC5


MPEC 2018-B122 - "19:21 UT" - 2018 BB5


MPEC 2018-B121 - "19:18 UT" - 2018 BA5


MPEC 2018-B120 - "19:14 UT" - 2018 BZ4


MPEC 2018-B119 - "19:10 UT" - 2018 BY4


MPEC 2018-B118 - "19:05 UT" - 2018 AP18


MPEC 2018-B117 - "19:00 UT" - 2018 AO18


MPEC 2018-B116 - "18:50 UT" - 2018 AN18


<< DOU on 25 Jan. '18 >>  MPEC 2018-B115 - "13:06 UT" - Daily Orbit Update

Observers  on 25 January '18

A total of 41 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPECs 2018-B121, 2018-B127 & 2018-B136 -- 2018 BJ5, 2018 BH5, 2018 BA5
T08ATLAS Mauna Loa in Hawaii, 4 in MPECs 2018-B115 & 2018-B127 -- 2018 BJ5, 208023, 12711, 3122
C77Bernezzo Obs. in Italy, 2 in MPECs 2018-B125 & 2018-B126 -- 2018 BG5, 2018 BF5
Z84Calar Alto Schmidt in Spain, 3 in MPECs 2018-B126, 2018-B128 & 2018-B134 -- 2018 BK5, 2018 BG5, 2018 BE5
160Castelmartini Obs. in Italy, 4 in MPECs 2018-B115, 2018-B124, 2018-B125 & 2018-B126 -- 2018 BG5, 2018 BF5, 2018 BD5, 306383
703Catalina Sky Survey (CSS) in Arizona, 31 in MPECs 2018-B115, 2018-B124, 2018-B125, 2018-B126 & 2018-B130 -- 2018 BM5, 2018 BG5, 2018 BF5, 2018 BD5, 2016 CL32, 2015 OX78, 2015 FO124, 2011 MU, 2004 BB, 2002 RN38, 85990, 85628, 507366, 422699, 399611, 333888, 322763, 306383, 265196, 265187, 25916, 248926, 163691, 162038, 154652, 152563, 14402, 136793, 11405, 7977, 1627
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 18 in MPECs 2018-B115, 2018-B116, 2018-B117, 2018-B120, 2018-B123, 2018-B129, 2018-B132 & 2018-B136 -- 2018 BZ4, 2018 BW1, 2018 BU, 2018 BS, 2018 BO5, 2018 BM3, 2018 BL5, 2018 BH5, 2018 BE3, 2018 BC5, 2018 AO18, 2018 AN3, 2018 AN18, 2018 AL2, 2018 AL18, 2018 AL13, 2018 AF3, 2018 AD12
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 15 in MPECs 2018-B115, 2018-B117, 2018-B118, 2018-B122 & 2018-B123 -- 2018 BX2, 2018 BR, 2018 BQ, 2018 BK3, 2018 BC5, 2018 BB5, 2018 AT11, 2018 AP18, 2018 AO2, 2018 AO18, 2018 AG2, 2018 AD12, 2017 YL6, 2017 YG7, 2017 YB8
K65Cesena Obs. in Italy, 2 in MPECs 2018-B126 & 2018-B127 -- 2018 BJ5, 2018 BG5
A77Chante-Perdrix Obs. in France, 1 in MPEC 2018-B115 -- 2007 AT2
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2018-B126 & 2018-B127 -- 2018 BJ5, 2018 BG5
151Eschenberg Obs. in Switzerland, 1 in MPEC 2018-B115 -- 2018 BU1
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2018-B130 -- 2018 BM5
203GiaGa Obs. in Italy, 2 in MPECs 2018-B124 & 2018-B125 -- 2018 BF5, 2018 BD5
K73Gravina Obs. in Italy, 1 in MPEC 2018-B115 -- 6053
G48Harlingten Research Obs. in New Mexico, 1 in MPEC 2018-B127 -- 2018 BJ5
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-B125 -- 2018 BF5
H06#M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-B125 -- 2018 BF5
585Kiev Comet Station in Ukraine, 3 in MPECs 2018-B124, 2018-B125 & 2018-B130 -- 2018 BM5, 2018 BF5, 2018 BD5
844Los Molinos Obs. in Uruguay, 1 in MPEC 2018-B115 -- 385580
K38M57 Obs. in Italy, 1 in MPEC 2018-B126 -- 2018 BG5
H01Magdalena Ridge Obs. (MRO) in New Mexico, 13 in MPECs 2018-B121, 2018-B124, 2018-B125, 2018-B126, 2018-B127, 2018-B129, 2018-B130, 2018-B131, 2018-B132, 2018-B133, 2018-B134, 2018-B135 & 2018-B136 -- 2018 BQ5, 2018 BP5, 2018 BO5, 2018 BN5, 2018 BM5, 2018 BL5, 2018 BJ5, 2018 BH5, 2018 BG5, 2018 BF5, 2018 BE5, 2018 BD5, 2018 BA5
568_Marco Micheli on Mauna Kea in Hawaii, 3 in MPECs 2018-B116, 2018-B118 & 2018-B121 -- 2018 BA5, 2018 AP18, 2018 AN18
G96Mt. Lemmon Survey (MLS) in Arizona, 37 in MPECs 2018-B115, 2018-B117, 2018-B127, 2018-B128, 2018-B129, 2018-B130, 2018-B131, 2018-B132, 2018-B133, 2018-B134, 2018-B135 & 2018-B136 -- 2018 BQ5, 2018 BP5, 2018 BO5, 2018 BN5, 2018 BM5, 2018 BL5, 2018 BK5, 2018 BJ5, 2018 BH5, 2018 BE5, 2018 AO18, 2017 QO17, 2017 QJ18, 2015 YR1, 2015 FO124, 2015 DP, 2015 BN509, 2009 CS5, 2006 OD7, 2002 CY58, 96315, 85628, 505667, 496816, 490684, 483560, 381906, 331510, 267221, 216707, 190208, 163692, 153349, 152952, 142348, 137925, 5620
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2018-B115 -- 439908
F51Pan-STARRS 1 (PS1) in Hawaii, 10 in MPECs 2018-B115, 2018-B116, 2018-B117, 2018-B118, 2018-B119, 2018-B120, 2018-B121, 2018-B122, 2018-B123 & 2018-B130 -- 2018 BZ4, 2018 BY4, 2018 BM5, 2018 BC5, 2018 BB5, 2018 BA5, 2018 AP18, 2018 AO18, 2018 AN18, 174050
K63Pascoli Obs. in Italy, 3 in MPECs 2018-B124, 2018-B125 & 2018-B126 -- 2018 BG5, 2018 BF5, 2018 BD5
L04ROASTERR-1 in Romania, 5 in MPECs 2018-B124, 2018-B125, 2018-B126, 2018-B127 & 2018-B130 -- 2018 BM5, 2018 BJ5, 2018 BG5, 2018 BF5, 2018 BD5
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2018-B126, 2018-B128, 2018-B129 & 2018-B130 -- 2018 BM5, 2018 BL5, 2018 BK5, 2018 BG5
H36Sandlot Obs. in Kansas, 4 in MPECs 2018-B125, 2018-B127, 2018-B128 & 2018-B133 -- 2018 BP5, 2018 BK5, 2018 BJ5, 2018 BF5
B74Santa Maria de Montmagastrell Obs. in Spain, 1 in MPEC 2018-B125 -- 2018 BF5
204Schiaparelli Obs. in Italy, 10 in MPECs 2018-B120, 2018-B124, 2018-B125, 2018-B126, 2018-B128, 2018-B130, 2018-B132, 2018-B133, 2018-B134 & 2018-B136 -- 2018 BZ4, 2018 BP5, 2018 BO5, 2018 BM5, 2018 BK5, 2018 BH5, 2018 BG5, 2018 BF5, 2018 BE5, 2018 BD5
G40!M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-B115 -- 2017 YS8
G40(program code "(" (17) via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPECs 2018-B115 & 2018-B125 -- 2018 BF5, 2018 AQ2
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2018-B125 -- 2018 BF5
587Sormano Obs. in Italy, 6 in MPECs 2018-B120, 2018-B124, 2018-B125, 2018-B126, 2018-B130 & 2018-B134 -- 2018 BZ4, 2018 BM5, 2018 BG5, 2018 BF5, 2018 BE5, 2018 BD5
691Spacewatch 0.9m telescope in Arizona, 19 in MPECs 2018-B115 & 2018-B117 -- 2018 BZ2, 2018 BY2, 2018 BP3, 2018 BL1, 2018 AO18, 2018 AH12, 2018 AF3, 2018 AE4, 2018 AB4, 2018 AB12, 2017 YS8, 2017 YM6, 2017 XH62, 2017 TH6, 2017 OA, 2017 NU6, 2015 DP155, 2007 WB, 2006 AL4
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2018-B115, 2018-B119 & 2018-B123 -- 2018 BY4, 2018 BR, 2018 BC5, 2015 DP155
W34Squirrel Valley Obs. in North Carolina, 4 in MPECs 2018-B115, 2018-B125 & 2018-B126 -- 2018 BG5, 2018 BF5, 302311, 111253
I52Steward Obs. Mt. Lemmon Station in Arizona, 50 in MPECs 2018-B115, 2018-B117, 2018-B122, 2018-B124, 2018-B125, 2018-B126, 2018-B127, 2018-B128, 2018-B129, 2018-B130, 2018-B131, 2018-B132, 2018-B133, 2018-B134, 2018-B135 & 2018-B136 -- 2018 BZ2, 2018 BX1, 2018 BV1, 2018 BU1, 2018 BS1, 2018 BQ5, 2018 BQ1, 2018 BP5, 2018 BP3, 2018 BP1, 2018 BO5, 2018 BO3, 2018 BN5, 2018 BN3, 2018 BM5, 2018 BM3, 2018 BL5, 2018 BK5, 2018 BJ5, 2018 BJ3, 2018 BH5, 2018 BH3, 2018 BG5, 2018 BG1, 2018 BF5, 2018 BE5, 2018 BD5, 2018 BD3, 2018 BC3, 2018 BB5, 2018 BA3, 2018 AZ, 2018 AO18, 2018 AN3, 2018 AN12, 2018 AM13, 2018 AL12, 2018 AH13, 2018 AH, 2018 AG12, 2018 AG, 2018 AE13, 2018 AC12, 2017 YR1, 2017 YM6, 2017 YH1, 2017 YC2, 2017 YA6, 2017 WE2, 2003 UO12
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2018-B115 -- 2017 XB1
L01Visnjan Obs., 7 in MPECs 2018-B124, 2018-B126, 2018-B127, 2018-B128, 2018-B130, 2018-B133 & 2018-B135 -- 2018 BQ5, 2018 BP5, 2018 BM5, 2018 BK5, 2018 BJ5, 2018 BG5, 2018 BD5
718Wiggins Obs. in Utah, 1 in MPEC 2018-B125 -- 2018 BF5
I15Wishing Star Obs. in Rhode Island, 7 in MPEC 2018-B115 -- 2018 AQ2, 2018 AG, 2017 YT7, 504928, 208023, 154347, 6053
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 January '18

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2358 UTC)
See the CRT page for a list of all objects rated recently as risks and our ephemerides page for a list of risk-listed objects under current observation.
The time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090. Both also post impact solutions beyond 100 years for a few special objects.
For the latest official risk assessments, and for explanations of the terminology, see the NASA/JPL Sentry and NEODyS CLOMON2 risk pages.
0000NNN000

Object

Risk
Monitor
When
Noted
UTC
0000T0000
Year
Range

VI
#
000NN00
Prob
Cum
T0000
PS
Cum
T0000
PS
Max

T
S


Notes for Today's Latest Risk Assessments
2018 BP3JPL Sentry17122115-211524.027e-07-8.62-8.810JPL: Computed at 08:47 today Pacific time based on 35 observations spanning 2.8998 days (2018-Jan-22.36003 to 2018-Jan-25.25983). Diameter approximately 0.006 km. from weighted mean H=28.73.
2018 BM3JPL Sentry1712R E M O V E DJPL: Risk listing removed at 1657 UTC today
2018 BL1NEODyS1712R E M O V E D-
2018 BH1NEODyS17122062-211761.06e-07-7.11-7.390NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2018-01-16.351 to 2018-01-24.504."
2018 BPNEODyS1712206218.19e-11-8.03-8.030NEODyS: "Based on 64 optical observations (of which 2 are rejected as outliers) from 2018-01-16.155 to 2018-01-24.107."
2018 AB12NEODyS1712R E M O V E D-

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale (next 100 years)

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 25 January '18

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

2246Updated Traffic Report
2118Grabbed MPEC 2018-B130 - 2018 BM5 - see above
Grabbed MPEC 2018-B131 - 2018 BN5 - see above
Grabbed MPEC 2018-B132 - 2018 BO5 - see above
Grabbed MPEC 2018-B133 - 2018 BP5 - see above
Grabbed MPEC 2018-B134 - 2018 BE5 - see above
Grabbed MPEC 2018-B135 - 2018 BQ5 - see above
Grabbed MPEC 2018-B136 - 2018 BH5 - see above
2010Grabbed MPEC 2018-B122 - 2018 BB5 - see above
Grabbed MPEC 2018-B123 - 2018 BC5 - see above
Grabbed MPEC 2018-B124 - 2018 BD5 - see above
Grabbed MPEC 2018-B125 - 2018 BF5 - see above
Grabbed MPEC 2018-B126 - 2018 BG5 - see above
Grabbed MPEC 2018-B127 - 2018 BJ5 - see above
Grabbed MPEC 2018-B128 - 2018 BK5 - see above
Grabbed MPEC 2018-B129 - 2018 BL5 - see above
1939Grabbed MPEC 2018-B116 - 2018 AN18 - see above
Grabbed MPEC 2018-B117 - 2018 AO18 - see above
Grabbed MPEC 2018-B118 - 2018 AP18 - see above
Grabbed MPEC 2018-B119 - 2018 BY4 - see above
Grabbed MPEC 2018-B120 - 2018 BZ4 - see above
Grabbed MPEC 2018-B121 - 2018 BA5 - see above
1712Noted that NEODyS has removed 2018 AB12 as an impact risk - see above
Noted that NEODyS has updated its 2018 BH1 risk assessment - see above
Noted that NEODyS has removed 2018 BL1 as an impact risk - see above
Noted that JPL Sentry has removed 2018 BM3 as an impact risk - see above
Noted that NEODyS has updated its 2018 BP risk assessment - see above
Noted that JPL Sentry has updated its 2018 BP3 risk assessment - see above
Grabbed MPEC 2018-B115 - Daily Orbit Update - see above