Contents  on 30 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 30 January '18

Twelve objects reported inside ten LD

Twelve visitors are reported within ten lunar distances (LD) of our planet today. And the two nearest both come their closest to Earth on this passage. 2018 BE6 reaches 3.40 LD at 0902 UTC and newly announced 2018 BQ6 gets to 3.60 LD at 1641 UTC.

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 BC 4 m  5.14 to 5.61 LD Dec. 30 - Feb. 9 intruder, NHATS target, risk
3.01 LD Jan. 24 2018 BA3 20 m  9.64 to 11.36 LD Jan. 19 - 30 exits ten LD
3.06 LD Jan. 27 2018 BU1 41 m  7.72 to 10.10 LD Jan. 23 - 30 exits ten LD
3.07 LD Jan. 23 2018 BJ6 7 m  5.87 to 6.59 LD Jan. 12 - Feb. 4 NHATS target
3.40 LD today 2018 BE6 43 m  3.40 LD Jan. 27 - Feb. 1 Earth closest at 0902 UTC - DOU
3.60 LD today 2018 BQ6 12 m  3.60 LD Jan. 26 - Feb. 3 NEW, Earth closest at 1641 UTC - MPEC
4.65 LD Jan. 23 2018 AJ 42 m  9.28 to 10.36 LD Jan. 16 - 30 NHATS target, exits ten LD
4.83 LD Jan. 26 2018 BM5 11 m  8.90 to 10.68 LD Jan. 22 - 30 exits ten LD
5.31 LD Feb. 4 2018 AH12 14 m  7.41 from 8.24 LD Jan. 28 - Feb. 12 NHATS target
6.7   LD Jan. 15* 2018 AV2 6 m  7.0 to 7.0 LD Nov. 10 - March 2 EPU +/- 9 mins.*, NHATS target, natural?
7.21 LD Jan. 28 2018 BS6 37 m  8.29 to 9.74 LD Jan. 25 - 31 NEW - MPEC
9.27 LD Jan. 27 2018 BQ 26 m  9.44 to 9.62 LD Jan. 22 - Feb. 1 NHATS target

This report was generated at 1850 UTC with the discoveries of approaching risk-listed 2018 BP6 (MPEC), passing 2018 BQ6 (MPEC), outbound 2018 BS6 (MPEC), and departed 2018 BU6 (MPEC), which slipped by us at 4.77 LD on January 26th. Today's DOU MPEC has follow-up for approaching 2017 VR12 and passing 2018 BE6, and astrometry from early January for departed intruder 2018 AH.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
3.65 LD Feb. 5 2018 BP6 40 m  17.14 from 20.19 LD Feb. 2 - 8 NEW, risk - MPEC
3.7   LD Feb. 24* 2017 DR109 10 m  42.2 from 44.1 LD Feb. 18 - March 1 EPU +/- 30 mins.*, NHATS target
3.76 LD March 7 2017 VR12 267 m  48.29 from 49.58 LD Feb. 28 - March 13 radar/NHATS target - DOU
6.9   LD March 10* 2015 DK200 26 m  77.1 from 79.5 LD March 6 - 14 EPU +/- 23.45 hours*, NHATS target
* EPU = Earth passage uncertainty


Reading:  Western University reports that twelve all-sky cameras from its Southern Ontario Meteor Network (SOMN) recorded a deep penetrating fireball that was visible from an altitude of 75 down to 24 kilometers over southern Ontario on the evening of Wednesday, January 24th local time. They can back-calculate where the meteoroid came from in our solar system and are now appealing for help from the public in finding where likely remnants landed on the ground. This, by the way, is not far from the Michigan bolide of January 16th local, which produced meteorites.



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 30 January '18

The MPC's NEO Confirmation Page has 32 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 32 objects listed. Of these, eight were "one nighters." So far The Tracking News has counted a total of 40 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 30 January '18

Minor Planet Electronic Circulars

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


MPEC 2018-B166 - "15:55 UT" - 2018 BT6


MPEC 2018-B165 - "15:51 UT" - 2018 BS6


MPEC 2018-B164 - "15:48 UT" - 2018 BQ6


MPEC 2018-B163 - "15:44 UT" - 2018 BU6


MPEC 2018-B162 - "15:41 UT" - 2018 BR6


MPEC 2018-B161 - "15:37 UT" - 2018 BP6


MPEC 2018-B160 - "15:34 UT" - 2018 BO6


<< DOU on 30 Jan. '18 >>  MPEC 2018-B159 - "13:14 UT" - Daily Orbit Update

Observers  on 30 January '18

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

CodeObserver / observatory
R57Aorangi Iti Obs., 1 in MPEC 2018-B166 -- 2018 BT6
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPECs 2018-B160, 2018-B161 & 2018-B162 -- 2018 BR6, 2018 BP6, 2018 BO6
T05ATLAS Haleakala in Hawaii, 12 in MPEC 2018-B159 -- 2018 BG3, 2015 NJ3, 2015 BS509, 505667, 259802, 190208, 17511, 143992, 12711, 7977, 6053, 1980
C77Bernezzo Obs. in Italy, 1 in MPEC 2018-B163 -- 2018 BU6
160Castelmartini Obs. in Italy, 1 in MPEC 2018-B163 -- 2018 BU6
703Catalina Sky Survey (CSS) in Arizona, 3 in MPECs 2018-B163, 2018-B165 & 2018-B166 -- 2018 BU6, 2018 BT6, 2018 BS6
K51Celado Obs. in Italy, 3 in MPECs 2018-B159, 2018-B161 & 2018-B163 -- 2018 BU6, 2018 BP6, 2015 BS509
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2018-B163 -- 2018 BU6
X31Galilei Obs., 1 in MPEC 2018-B166 -- 2018 BT6
J95Great Shefford Obs. in England, 8 in MPECs 2018-B159, 2018-B160, 2018-B161, 2018-B163, 2018-B164, 2018-B165 & 2018-B166 -- 2018 BU6, 2018 BT6, 2018 BS6, 2018 BQ6, 2018 BP6, 2018 BO6, 2018 BE6, 2015 BS509
G48Harlingten Research Obs. in New Mexico, 1 in MPEC 2018-B166 -- 2018 BT6
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2018-B159 -- 2017 VR12
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-B166 -- 2018 BT6
H06#M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2018-B166 -- 2018 BT6
Z43Landehen Obs., 2 in MPEC 2018-B159 -- 302311, 153349
130Lumezzane Obs. in Italy, 11 in MPEC 2018-B159 -- 2018 AQ2, 2018 AG, 2017 QL33, 2017 QJ18, 2015 YR1, 2015 BS509, 2002 RN38, 439908, 348314, 302311, 228587
H01Magdalena Ridge Obs. (MRO) in New Mexico, 7 in MPECs 2018-B160, 2018-B161, 2018-B162, 2018-B163, 2018-B164, 2018-B165 & 2018-B166 -- 2018 BU6, 2018 BT6, 2018 BS6, 2018 BR6, 2018 BQ6, 2018 BP6, 2018 BO6
G96Mt. Lemmon Survey (MLS) in Arizona, 4 in MPECs 2018-B160, 2018-B161, 2018-B162 & 2018-B164 -- 2018 BR6, 2018 BQ6, 2018 BP6, 2018 BO6
J69North Obs. in England, 3 in MPECs 2018-B159 & 2018-B166 -- 2018 BT6, 2018 AQ2, 2015 NJ3
Z80Northolt Branch Obs. in England, 1 in MPEC 2018-B166 -- 2018 BT6
I41Palomar Transient Factory in southern California, 1 in MPEC 2018-B159 -- 2018 AH
F51Pan-STARRS 1 (PS1) in Hawaii, 14 in MPEC 2018-B159 -- 2017 YT7, 2017 VR12, 2017 SO17, 2015 BF4, 2003 MD7, 504928, 455594, 440212, 370061, 237805, 225586, 17511, 141498, 136849
K63Pascoli Obs. in Italy, 1 in MPEC 2018-B166 -- 2018 BT6
104San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2018-B160, 2018-B161, 2018-B163, 2018-B164 & 2018-B166 -- 2018 BU6, 2018 BT6, 2018 BQ6, 2018 BP6, 2018 BO6
H36Sandlot Obs. in Kansas, 5 in MPECs 2018-B160, 2018-B161, 2018-B163, 2018-B165 & 2018-B166 -- 2018 BU6, 2018 BT6, 2018 BS6, 2018 BP6, 2018 BO6
C95SATINO-1 in France, 2 in MPECs 2018-B161 & 2018-B166 -- 2018 BT6, 2018 BP6
204Schiaparelli Obs. in Italy, 5 in MPECs 2018-B160, 2018-B162, 2018-B164, 2018-B165 & 2018-B166 -- 2018 BT6, 2018 BS6, 2018 BR6, 2018 BQ6, 2018 BO6
W88"program code '"' (11) via Slooh.com Chile Obs. in Chile, 1 in MPEC 2018-B166 -- 2018 BT6
Y00SONEAR in Brazil, 1 in MPEC 2018-B166 -- 2018 BT6
587Sormano Obs. in Italy, 1 in MPEC 2018-B163 -- 2018 BU6
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2018-B162 & 2018-B163 -- 2018 BU6, 2018 BR6
V78Spirit Marsh Obs. in Minnesota, 1 in MPEC 2018-B159 -- 3122
I52Steward Obs. Mt. Lemmon Station in Arizona, 7 in MPECs 2018-B160, 2018-B161, 2018-B162, 2018-B163, 2018-B164, 2018-B165 & 2018-B166 -- 2018 BU6, 2018 BT6, 2018 BS6, 2018 BR6, 2018 BQ6, 2018 BP6, 2018 BO6
926Tenagra II Obs. in Arizona, 1 in MPEC 2018-B166 -- 2018 BT6
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 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 BP6JPL Sentry18012074-207632.1696e-08-7.46-7.550JPL: Computed at 09:54 today Pacific time based on 40 observations spanning 2.7649 days (2018-Jan-27.35282 to 2018-Jan-30.117749). Diameter approximately 0.041 km. from weighted mean H=24.61.

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 30 January '18

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

1850Generated Traffic Report
1801Noted that JPL Sentry has posted 2018 BP6 as an impact risk - see above
1634Grabbed MPEC 2018-B159 - Daily Orbit Update - see above
Grabbed MPEC 2018-B160 - 2018 BO6 - see above
Grabbed MPEC 2018-B161 - 2018 BP6 - see above
Grabbed MPEC 2018-B162 - 2018 BR6 - see above
Grabbed MPEC 2018-B163 - 2018 BU6 - see above
Grabbed MPEC 2018-B164 - 2018 BQ6 - see above
Grabbed MPEC 2018-B165 - 2018 BS6 - see above
Grabbed MPEC 2018-B166 - 2018 BT6 - see above