Contents  on 14 November '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 14 November '17

Three objects reported inside ten LD

There are three asteroidal objects reported within ten lunar distances (LD) of our home world today. Nearest is newly discovered risk-listed 2017 VN2, outbound from 7.98 to 7.33 LD. Another new announcement, risk-listed intruder 2017 VL2, leaves our ten-LD traffic reporting sphere, flying away from 8.65 to 10.52 LD after passing us at 0.31 LD, and the Moon at 0.99 LD, five days ago. And 2017 VE2 also departs, moving from 9.02 to 11.21 LD.

Earth passage I D ~Size Distance Today  Notes
0.31 LD Nov. 92017 VL2 21 m  8.65 to 10.52 LD NEW, intruder, exits ten LD, risk - MPEC
6.16 LD Nov. 182017 VN2 11 m  7.33 from 7.98 LD NEW, risk - MPEC, DOU
7.16 LD Nov. 122017 VE2 32 m  9.02 to 11.21 LD exits ten LD - DOU
Approaching
8.66 LD Nov. 17444584 2006 UK 309 m  < 10 LD Nov. 16 - DOU

This report was generated at 1740 UTC with the discoveries of 2017 VN2 and 2017 VL2, and with first follow-up for 2017 VE2 in today's DOU MPEC, along with continuing follow-up for 444584 2006 UK and departed objects 2017 VL1, 2017 VG1, 2017 VC, 496817 1989 VB, and risk-listed 2017 VJ.



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 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.

Radar Astrometry  on 14 November '17

Radar observation of two objects

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2358 UTC when the database was dated 14 Nov.

NEOCP Activity  on 14 November '17

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, 38 were "one nighters." So far The Tracking News has counted a total of 97 listings on the NEOCP today.

New MPECs  on 14 November '17

Minor Planet Electronic Circulars

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


MPEC 2017-V75 - "20:56 UT" - 2017 VR12


MPEC 2017-V74 - "19:30 UT" - 2017 VU12


MPEC 2017-V73 - "19:26 UT" - 2017 VT12


MPEC 2017-V72 - "19:22 UT" - 2017 VS12


<< DOU on 14 Nov. '17 >>  MPEC 2017-V71 - "13:04 UT" - Daily Orbit Update


MPEC 2017-V70 - "03:29 UT" - 2017 VM2


MPEC 2017-V69 - "03:26 UT" - 2017 VK2


MPEC 2017-V68 - "03:23 UT" - 2017 VN2


MPEC 2017-V67 - "03:19 UT" - 2017 VL2


MPEC 2017-V66 - "03:12 UT" - 2017 VJ2


MPEC 2017-V65 - "03:08 UT" - 2017 VH2


MPEC 2017-V64 - "03:05 UT" - 2017 UZ51

Observers  on 14 November '17

A total of 31 observers appear in today's MPECs.

CodeObserver / observatory
C97Al-Fulaij Obs., 2 in MPEC 2017-V71 -- 2017 VC, 500749
H21Astronomical Research Obs. Westfield in Illinois, 3 in MPECs 2017-V66, 2017-V73 & 2017-V75 -- 2017 VT12, 2017 VR12, 2017 VJ2
T05ATLAS Haleakala in Hawaii, 33 in MPECs 2017-V70 & 2017-V71 -- 2017 VU, 2017 VM2, 2017 VG1, 2017 VE2, 2017 VD2, 2017 OH68, 99907, 96631, 90075, 86819, 85709, 65679, 53319, 504711, 497176, 438430, 333888, 21374, 162998, 159399, 154988, 154589, 142040, 141670, 11500, 105140, 10115, 100926, 7336, 5189, 5143, 1865, 1036
T08ATLAS Mauna Loa in Hawaii, 12 in MPECs 2017-V67, 2017-V70 & 2017-V71 -- 2017 VM2, 2017 VL2, 2017 VC, 2017 NL6, 2014 YC15, 88188, 374851, 190208, 17511, 17182, 137062, 1580
V03Big Water Obs. in Utah, 2 in MPECs 2017-V66 & 2017-V69 -- 2017 VK2, 2017 VJ2
Z84Calar Alto Schmidt in Spain, 2 in MPECs 2017-V68 & 2017-V74 -- 2017 VU12, 2017 VN2
160Castelmartini Obs. in Italy, 3 in MPEC 2017-V71 -- 2017 FJ90, 495848, 250458
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPEC 2017-V71 -- 2017 SW20, 2017 SK17, 2017 SG14, 2017 SB14, 2017 QH18, 2017 NU6, 2017 MV2, 2017 MC5, 2017 JU2
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2017-V70 -- 2017 VM2
253Goldstone DSS-14 70m antenna in southern California, 2 in radar -- 503941, 171576
J95Great Shefford Obs. in England, 2 in MPECs 2017-V68 & 2017-V73 -- 2017 VT12, 2017 VN2
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2017-V67 -- 2017 VL2
695^Spacewatch via Kitt Peak Natl. Obs. in Arizona, 1 in MPEC 2017-V64 -- 2017 UZ51
J136Martin Altman in Germany via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2017-V71 -- 2017 VE2
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2017-V65, 2017-V68, 2017-V72, 2017-V73 & 2017-V75 -- 2017 VT12, 2017 VS12, 2017 VR12, 2017 VN2, 2017 VH2
K95MASTER-II Sutherland in South Africa, 3 in MPEC 2017-V71 -- 89355, 444584, 2368
711McDonald Obs. in Texas, 6 in MPECs 2017-V64, 2017-V66, 2017-V69, 2017-V71, 2017-V73 & 2017-V75 -- 2017 VT12, 2017 VR12, 2017 VK2, 2017 VJ2, 2017 UZ51, 2017 UC8
108Montelupo Obs. in Italy, 2 in MPEC 2017-V71 -- 2017 VD2, 140158
474Mt. John Obs. in New Zealand, 14 in MPECs 2017-V67 & 2017-V71 -- 2017 VV, 2017 VT, 2017 VL2, 2017 VJ1, 2017 UV4, 2017 UR51, 2017 UC45, 2017 UA45, 2017 TZ3, 2017 SR32, 2017 SB14, 2017 NU6, 2016 AU130, 2008 CC175
G96Mt. Lemmon Survey (MLS) in Arizona, 7 in MPECs 2017-V66, 2017-V68, 2017-V69, 2017-V72, 2017-V73, 2017-V74 & 2017-V75 -- 2017 VU12, 2017 VT12, 2017 VS12, 2017 VR12, 2017 VN2, 2017 VK2, 2017 VJ2
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2017-V71 -- 30825, 177614, 140158
F51Pan-STARRS 1 (PS1) in Hawaii, 31 in MPECs 2017-V64, 2017-V66, 2017-V69, 2017-V71, 2017-V73, 2017-V74 & 2017-V75 -- 2017 VU12, 2017 VT12, 2017 VR12, 2017 VK2, 2017 VJ2, 2017 VB2, 2017 UZ51, 2017 UX4, 2017 UV5, 2017 UG8, 2017 TN6, 2017 SC14, 2017 PF, 2017 PA27, 2017 OQ68, 2006 UL185, 2001 UQ163, 85839, 499998, 498066, 459451, 378526, 329291, 20429, 190166, 177255, 162273, 138911, 137799, 8201, 2212
Z38Picoto Obs., 3 in MPEC 2017-V71 -- 85839, 8037, 2212
033Schwarzschild Obs. in Germany, 4 in MPECs 2017-V71, 2017-V73 & 2017-V75 -- 2017 VT12, 2017 VR12, 2017 VM2, 2017 VK2
G40!M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-V71 -- 496817
W881Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2017-V71 -- 2017 VG1
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2017-V64, 2017-V65, 2017-V66 & 2017-V71 -- 2017 VJ2, 2017 VH2, 2017 UZ51, 2017 UX4
I93St. Pardon de Conques Obs. in France, 2 in MPECs 2017-V68 & 2017-V70 -- 2017 VN2, 2017 VM2
I52Steward Obs. Mt. Lemmon Station in Arizona, 18 in MPECs 2017-V66, 2017-V68, 2017-V69, 2017-V71, 2017-V72, 2017-V73, 2017-V74 & 2017-V75 -- 2017 VW1, 2017 VU12, 2017 VT12, 2017 VS12, 2017 VR12, 2017 VN2, 2017 VM2, 2017 VL1, 2017 VK2, 2017 VK1, 2017 VJ2, 2017 VJ, 2017 VH2, 2017 VE2, 2017 VA2, 2017 UZ51, 2017 UY5, 2017 UX5
926Tenagra II Obs. in Arizona, 3 in MPECs 2017-V65, 2017-V73 & 2017-V74 -- 2017 VU12, 2017 VT12, 2017 VH2
C51WISE in Earth polar orbit, 5 in MPECs 2017-V65 & 2017-V71 -- 2017 VH2, 2013 QH48, 2000 YG29, 338176, 16657
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 14 November '17

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
2017 VR12JPL Sentry23582029-21172887.3217053e-06-2.90-3.180JPL: Computed at 15:44 today Pacific time based on 28 observations spanning 3.7959 days (2017-Nov-10.58175 to 2017-Nov-14.377678). Diameter approximately 0.280 km. from weighted mean H=20.43.
2017 VN2JPL Sentry16592110-211014.522e-09-9.96-9.960JPL #2 for the day: Computed at 08:53 today Pacific time based on 34 observations spanning 1.9418 days (2017-Nov-12.23964 to 2017-Nov-14.18145). Diameter approximately 0.011 km. from weighted mean H=27.40.
NEODyS1555211012.16e-11-12.26-12.260NEODyS: "Based on 31 optical observations (of which 5 are rejected as outliers) from 2017-11-12.230 to 2017-11-13.925."
2017 VL2JPL Sentry05352080-21171280.000285212754-4.39-5.010JPL: Computed at 21:09 Nov. 13th Pacific time based on 14 observations spanning 3.0929 days (2017-Nov-10.47521 to 2017-Nov-13.56815). Diameter approximately 0.021 km. from weighted mean H=26.07.
2017 VTJPL Sentry15552087-208728.4194e-08-5.18-5.180JPL: Computed at 07:47 today Pacific time based on 27 observations spanning 9.4779 days (2017-Nov-03.99656 to 2017-Nov-13.47446). Diameter approximately 0.210 km. from weighted mean H=21.06.
2017 VJJPL Sentry16302094-2116432.45324328e-05-4.66-4.910JPL: Computed at 08:07 today Pacific time based on 20 observations spanning 8.8480 days (2017-Nov-05.41077 to 2017-Nov-14.25875). Diameter approximately 0.041 km. from weighted mean H=24.62.
2017 UR51JPL Sentry16302030-2114332.33809179e-05-3.35-3.610JPL: Computed at 07:57 today Pacific time based on 15 observations spanning 14.059 days (2017-Oct-30.52142 to 2017-Nov-13.57996). Diameter approximately 0.110 km. from weighted mean H=22.52.
2017 UA45JPL Sentry16302078-2117650.00015959474-4.70-4.980JPL: Computed at 08:23 today Pacific time based on 21 observations spanning 17.038 days (2017-Oct-27.47452 to 2017-Nov-13.51282). Diameter approximately 0.020 km. from weighted mean H=26.09.
2017 UP43NEODyS15552110-211671.92e-05-5.78-6.050NEODyS: "Based on 44 optical observations (of which 2 are rejected as outliers) from 2017-10-29.487 to 2017-11-13.483."
2017 UC8NEODyS1555R 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 14 November '17

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

2358Noted that JPL Sentry has posted 2017 VR12 as an impact risk - see above
Noted Radar Astrometry database update - see above
2252Grabbed MPEC 2017-V72 - 2017 VS12 - see above
Grabbed MPEC 2017-V73 - 2017 VT12 - see above
Grabbed MPEC 2017-V74 - 2017 VU12 - see above
Grabbed MPEC 2017-V75 - 2017 VR12 - see above
1740Generated Traffic Report
1659Noted that JPL Sentry has updated its 2017 VN2 risk assessment - see above
1630Noted that JPL Sentry has updated its 2017 UA45 risk assessment - see above
Noted that JPL Sentry has updated its 2017 UR51 risk assessment - see above
Noted that JPL Sentry has updated its 2017 VJ risk assessment - see above
1555Noted that NEODyS has removed 2017 UC8 as an impact risk - see above
Noted that NEODyS has updated its 2017 UP43 risk assessment - see above
Noted that NEODyS has posted 2017 VN2 as an impact risk - see above
Noted that JPL Sentry has updated its 2017 VT risk assessment - see above
Grabbed MPEC 2017-V71 - Daily Orbit Update - see above
0535Noted that JPL Sentry has posted 2017 VL2 as an impact risk - see above
Noted that JPL Sentry has posted 2017 VN2 as an impact risk - see above
0400Grabbed MPEC 2017-V64 - 2017 UZ51 - see above
Grabbed MPEC 2017-V65 - 2017 VH2 - see above
Grabbed MPEC 2017-V66 - 2017 VJ2 - see above
Grabbed MPEC 2017-V67 - 2017 VL2 - see above
Grabbed MPEC 2017-V68 - 2017 VN2 - see above
Grabbed MPEC 2017-V69 - 2017 VK2 - see above
Grabbed MPEC 2017-V70 - 2017 VM2 - see above