Contents  on 1 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 1 January '17

Two objects reported inside ten LD

Two asteroidal objects are reported traveling within ten lunar distances (LD) of our planet today. 2016 YM3 is outbound from 6.96 to 8.49 LD and NHATS target 2016 YR is headed away from 7.58 to 7.75 LD.

Earth passage I D ~Size Distance Today  Notes
4.41 LD Dec. 292016 YM3 14 m  6.96 to 8.49 LD
7.17 LD Dec. 272016 YR 12 m  7.58 to 7.75 LD NHATS target
Approaching
7.10 LD Feb. 52013 FK 74 m  < 10 LD Feb. 2
9.1   LD Feb. 42005 VL1 13 m  < 10 LD Feb. 1, uncertainty +/- 15.0000 hours, NHATS target, risk
9.4   LD Jan. 182016 YC8 40 m  < 10 LD Jan. 15, uncertainty +/- 24 mins., NHATS target, risk

This report was generated at 1936 UTC with the discovery of already departed 2016 YY10 (MPEC), which passed Earth at 8.97 LD on December 22nd, and to note follow-up in today's DOU MPEC for departed NHATS targets 2016 YK4 (first follow-up) and 2016 XR23.



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 1 January '17

The MPC's NEO Confirmation Page has 21 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 21 objects listed. Of these, fifteen were "one nighters." So far The Tracking News has counted a total of 28 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 1 January '17

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 2017-A06 - "22:35 UT" - 2016 YB11


MPEC 2017-A05 - "16:54 UT" - 2016 YZ10


MPEC 2017-A04 - "16:51 UT" - 2016 YY10


MPEC 2017-A03 - "16:27 UT" - 2012 VC82


<< DOU on 1 Jan. '17 >>  MPEC 2017-A02 - "13:06 UT" - Daily Orbit Update


MPEC 2017-A01 - "00:15 UT" - 2015 DD198

Observers  on 1 January '17

A total of 30 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 28 in MPEC 2017-A02 -- 2016 YP, 2016 YO, 2016 YN, 2016 YM, 2016 YE, 2016 YA1, 2016 XZ1, 2016 XR23, 2016 XH2, 2016 WV, 2016 WO1, 2016 WM7, 2016 WE1, 2016 VY5, 2016 VE2, 2016 UW5, 2016 UT80, 2016 PZ66, 2016 PR8, 2016 PN38, 2016 NL15, 2016 LV8, 2014 YN44, 2014 SM261, 2005 TF, 3103, 1627, 433
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2017-A02 -- 226514
300Bisei Spaceguard Center in Japan, 1 in MPEC 2017-A05 -- 2016 YZ10
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2017-A06 -- 2016 YB11
160Castelmartini Obs. in Italy, 5 in MPEC 2017-A02 -- 433953, 378610, 345705, 203217, 3352
107Cavezzo Obs. in Italy, 1 in MPEC 2017-A02 -- 2016 NL15
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 13 in MPEC 2017-A02 -- 2016 YW7, 2016 YN3, 2016 YM, 2016 YK4, 2016 WV9, 2016 WE10, 2016 VG3, 2016 UW41, 2016 TX55, 2016 TH93, 2016 RF40, 2016 QY83, 2016 OJ
106Crni Vrh Obs. in Slovenia, 3 in MPECs 2017-A02 & 2017-A06 -- 2016 YB11, 140928, 4179
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2017-A06 -- 2016 YB11
K78Iota Scorpii Obs., 2 in MPEC 2017-A02 -- 2016 PZ66, 275611
Q62|Sergio Foglia in Italy via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-A02 -- 369264
K38M57 Obs. in Italy, 1 in MPEC 2017-A02 -- 226514
568_Marco Micheli on Mauna Kea in Hawaii, 2 in MPECs 2017-A02 & 2017-A04 -- 2016 YY10, 2016 VZ18
474Mt. John Obs. in New Zealand, 1 in MPEC 2017-A04 -- 2016 YY10
G96Mt. Lemmon Survey in Arizona, 1 in MPEC 2017-A06 -- 2016 YB11
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2017-A04 -- 2016 YY10
K63Pascoli Obs. in Italy, 1 in MPEC 2017-A02 -- 2016 PZ66
B49Paus Obs. in Spain, 1 in MPEC 2017-A05 -- 2016 YZ10
H45Petit Jean Mtn. South Obs. in Arkansas, 1 in MPEC 2017-A02 -- 226514
D29Purple Mtn. Obs. Xuyi Station in China, 10 in MPEC 2017-A02 -- 2016 YB8, 2002 AC29, 420591, 420262, 414903, 226554, 16834, 163249, 138859, 5587
W25RMS Obs., 4 in MPEC 2017-A02 -- 2016 YN4, 2016 PZ66, 2016 PR8, 2016 NL15
L04ROASTERR-1 in Romania, 5 in MPEC 2017-A02 -- 2016 YT8, 2016 YN4, 2016 YK, 2016 YB8, 2016 XM
K61Rokycany Obs. in the Czech Republic, 2 in MPEC 2017-A02 -- 2016 QN11, 2016 OK1
204Schiaparelli Obs. in Italy, 1 in MPEC 2017-A06 -- 2016 YB11
033Schwarzschild Obs. in Germany, 2 in MPECs 2017-A05 & 2017-A06 -- 2016 YZ10, 2016 YB11
Q11Shinshiro Obs., 1 in MPEC 2017-A02 -- 226514
587Sormano Obs. in Italy, 1 in MPEC 2017-A06 -- 2016 YB11
G45Space Surveillance Telescope Atom Site in New Mexico, 1 in MPEC 2017-A05 -- 2016 YZ10
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2017-A04 -- 2016 YY10
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPECs 2017-A01, 2017-A02 & 2017-A03 -- 2016 WX9, 2015 DD198, 2012 VC82
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 January '17

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS and JPL 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 JPL NEO Program 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
2016 YPNEODyS2312211211.55e-09-8.03-8.030NEODyS: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2016-12-18.278 to 2016-12-27.238."

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 1 January '17

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

2312Noted that NEODyS has reposted 2016 YP as an impact risk - see above
Grabbed MPEC 2017-A06 - 2016 YB11 - see above
1936Generated Traffic Report
1700Grabbed MPEC 2017-A02 - Daily Orbit Update - see above
Grabbed MPEC 2017-A03 - 2012 VC82 - see above
Grabbed MPEC 2017-A04 - 2016 YY10 - see above
Grabbed MPEC 2017-A05 - 2016 YZ10 - see above
0105Grabbed MPEC 2017-A01 - 2015 DD198 - see above