Contents  on 25 January '19

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 '19

Five objects reported inside ten LD

Bulletin - 2303 UTC:  Three new discoveries of close passers have been announced.

Earth passageI D~Size~Inside ten LDNotes
2.44 LD at 1714 UTC Jan. 232019 BZ11 m Jan. 18 - 29risk, MPEC
6.52 LD at 0514 UTC Jan. 222019 BE141 m Jan. 17 - 27MPEC
7.32 LD at 1354 UTC tomorrow2019 AQ1413 m Jan. 23 - 30MPEC


Five planetesimals are reported within ten lunar distances (LD) of our planet today. Nearest is 2019 AA10, which is inbound from 6.3 to 5.7 LD*.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
5.7   LD tomorrow* 2019 AA10 26 m  5.7 from 6.3 LD Jan. 22 - 29 EPU +/- 6 mins.*
6.95 LD Jan. 23 2019 AS11 15 m  7.21 to 7.53 LD Jan. 15 - 30 NHATS target
7.6   LD today* 2019 AJ13 8 m  7.6 LD Jan. 20 - 29 EPU +/- 5 mins.*, NHATS target, Earth closest at 0046 UTC
8.59 LD today 2019 AG11 19 m  8.59 LD Jan. 22 - 28 Earth closest at 1200 UTC
9.1   LD today* 2019 AN12 28 m  9.1 LD yesterday - today EPU +/- 18 mins.*, Earth closest at 0230 UTC
* EPU = Earth passage uncertainty

This report was generated at 1709 UTC. It appears that problems are continuing from yesterday with Minor Planet Center computer operations.

Approaching
7.3   LD Feb. 12* 2017 PV25 41 m  25.8 from 27.3 LD Feb. 7 - 17 EPU +/- 1.07 hours*, NHATS target



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 '19

The MPC's NEO Confirmation Page has 77 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 77 objects listed. Of these, 43 were "one nighters." So far The Tracking News has counted a total of 102 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 '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been fourteen MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts. No Daily Orbit Update DOU MPEC has been posted yet, so visit the MPC Status Page for possible explanation.


MPEC 2019-B80 - "23:13 UT" - 2012 BC124 = 2019 BD1


MPEC 2019-B79 - "22:07 UT" - 2019 BE1


MPEC 2019-B78 - "22:03 UT" - 2019 BH1


MPEC 2019-B77 - "21:59 UT" - 2019 BG1


MPEC 2019-B76 - "21:55 UT" - 2019 BF1


MPEC 2019-B75 - "21:51 UT" - 2019 BD1


MPEC 2019-B74 - "21:46 UT" - 2019 BC1


MPEC 2019-B73 - "21:42 UT" - 2019 BB1


MPEC 2019-B72 - "21:37 UT" - 2019 BA1


MPEC 2019-B71 - "21:33 UT" - 2019 AR14


MPEC 2019-B70 - "21:28 UT" - 2019 AQ14


MPEC 2019-B69 - "21:24 UT" - 2019 AP14


MPEC 2019-B68 - "21:20 UT" - 2019 AO14


MPEC 2019-B67 - "21:01 UT" - 2019 BZ

Observers  on 25 January '19

A total of 23 observers appear in today's MPECs.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2019-B79 -- 2019 BE1
V03Big Water Obs. in Utah, 2 in MPECs 2019-B67 & 2019-B77 -- 2019 BZ, 2019 BG1
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2019-B75 & 2019-B77 -- 2019 BG1, 2019 BD1
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 2 in MPECs 2019-B68 & 2019-B71 -- 2019 AR14, 2019 AO14
107Cavezzo Obs. in Italy, 1 in MPEC 2019-B77 -- 2019 BG1
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2019-B77 -- 2019 BG1
734Farpoint Obs. in Kansas, 2 in MPECs 2019-B77 & 2019-B78 -- 2019 BH1, 2019 BG1
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2019-B75, 2019-B77 & 2019-B79 -- 2019 BG1, 2019 BE1, 2019 BD1
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 2 in MPECs 2019-B75 & 2019-B77 -- 2019 BG1, 2019 BD1
K38M57 Obs. in Italy, 3 in MPECs 2019-B75, 2019-B77 & 2019-B79 -- 2019 BG1, 2019 BE1, 2019 BD1
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2019-B68, 2019-B74, 2019-B76, 2019-B77 & 2019-B78 -- 2019 BH1, 2019 BG1, 2019 BF1, 2019 BC1, 2019 AO14
568^R. Wainscoat on Mauna Kea in Hawaii, 2 in MPECs 2019-B68 & 2019-B70 -- 2019 AQ14, 2019 AO14
118Modra Obs. in Slovakia, 1 in MPEC 2019-B73 -- 2019 BB1
G96Mt. Lemmon Survey (MLS) in Arizona, 2 in MPECs 2019-B74 & 2019-B75 -- 2019 BD1, 2019 BC1
I41Palomar Transient Factory (PTF) in southern California, 2 in MPECs 2019-B67 & 2019-B75 -- 2019 BZ, 2019 BD1
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2019-B68, 2019-B69, 2019-B70, 2019-B71, 2019-B72, 2019-B73, 2019-B76, 2019-B78 & 2019-B79 -- 2019 BH1, 2019 BF1, 2019 BE1, 2019 BB1, 2019 BA1, 2019 AR14, 2019 AQ14, 2019 AP14, 2019 AO14
F52Pan-STARRS 2 (PS2) in Hawaii, 4 in MPECs 2019-B71, 2019-B72, 2019-B73 & 2019-B78 -- 2019 BH1, 2019 BB1, 2019 BA1, 2019 AR14
204Schiaparelli Obs. in Italy, 3 in MPECs 2019-B75, 2019-B77 & 2019-B79 -- 2019 BG1, 2019 BE1, 2019 BD1
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2019-B69 & 2019-B75 -- 2019 BD1, 2019 AP14
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2019-B77 -- 2019 BG1
I52Steward Obs. Mt. Lemmon Station in Arizona, 10 in MPECs 2019-B67, 2019-B71, 2019-B72, 2019-B73, 2019-B74, 2019-B75, 2019-B76, 2019-B77, 2019-B78 & 2019-B79 -- 2019 BZ, 2019 BH1, 2019 BG1, 2019 BF1, 2019 BE1, 2019 BD1, 2019 BC1, 2019 BB1, 2019 BA1, 2019 AR14
K41Vegaquattro Obs. in Italy, 1 in MPEC 2019-B77 -- 2019 BG1
L01Visnjan Obs., 10 in MPECs 2019-B67, 2019-B71, 2019-B72, 2019-B73, 2019-B74, 2019-B75, 2019-B76, 2019-B77, 2019-B78 & 2019-B79 -- 2019 BZ, 2019 BH1, 2019 BG1, 2019 BF1, 2019 BE1, 2019 BD1, 2019 BC1, 2019 BB1, 2019 BA1, 2019 AR14
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 January '19

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 and NEODyS listings is 100 years, and both post impact solutions beyond that for some 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
2019 BC1JPL Sentry23002096-211133.4327e-09-6.55-6.800JPL: Computed at 14:57 today Pacific time based on 23 observations spanning 5.9686 days (2019-Jan-19.53121 to 2019-Jan-25.499824). Diameter approximately 0.242 km. from weighted mean H=20.76.
2019 BZJPL Sentry22302067-2117412.07724867e-05-6.11-6.410JPL: Computed at 14:08 today Pacific time based on 19 observations spanning 1.5551 days (2019-Jan-24.180448 to 2019-Jan-25.735547). Diameter approximately 0.011 km. from weighted mean H=27.49.
2015 EGJPL Sentry2300R E M O V E DJPL: Risk listing removed at 2244 UTC today

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 '19

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

2332Grabbed MPEC 2019-B80 - 2012 BC124 = 2019 BD1 - see above
2300Noted that JPL Sentry has removed 2015 EG as an impact risk - see above
Noted that JPL Sentry has posted 2019 BC1 as an impact risk - see above
2230Noted that JPL Sentry has posted 2019 BZ as an impact risk - see above
Grabbed MPEC 2019-B67 - 2019 BZ - see above
Grabbed MPEC 2019-B68 - 2019 AO14 - see above
Grabbed MPEC 2019-B69 - 2019 AP14 - see above
Grabbed MPEC 2019-B70 - 2019 AQ14 - see above
Grabbed MPEC 2019-B71 - 2019 AR14 - see above
Grabbed MPEC 2019-B72 - 2019 BA1 - see above
Grabbed MPEC 2019-B73 - 2019 BB1 - see above
Grabbed MPEC 2019-B74 - 2019 BC1 - see above
Grabbed MPEC 2019-B75 - 2019 BD1 - see above
Grabbed MPEC 2019-B76 - 2019 BF1 - see above
Grabbed MPEC 2019-B77 - 2019 BG1 - see above
Grabbed MPEC 2019-B78 - 2019 BH1 - see above
Grabbed MPEC 2019-B79 - 2019 BE1 - see above
1709Generated Traffic Report