Contents  on 15 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 15 November '17

Three objects reported inside ten LD

Three transient natual objects are are known to be inside ten lunar distances (LD) of Earth today. The two nearest are both newly announced and both come their closest to our planet this time around: risk-listed 2017 VV12 reaches 1.86 LD at 1512 UTC and 2017 VN13 2.97 LD at 2028 UTC.

Earth passage I D ~Size Distance Today  Notes
1.86 LD today2017 VV12 9 m  1.86 LD NEW, inside Earth SOI, Earth closest at 1512 UTC, risk - MPEC, DOU
2.97 LD today2017 VN13 9 m  2.97 LD NEW, Earth closest at 2028 UTC - MPEC
6.16 LD Nov. 182017 VN2 11 m  6.79 from 7.33 LD risk - DOU
Approaching
8.66 LD Nov. 17444584 2006 UK 309 m  < 10 LD tomorrow - DOU

This report was generated at 1948 UTC with the discoveries of 2017 VN13 (MPEC), 2017 VV12 (MPEC, DOU), and, from yesterday, already departed 2017 VU12 (MPEC, DOU), which passed us at 7.35 LD on November 8th. Today's DOU MPEC has follow-up for inbound risk-listed 2017 VN2, approaching 444584 2006 UK (arrives tomorrow), and seven departed objects: 2017 VE2, 2017 VD, 2017 VA, 171576 1999 VP11 (also had radar data posted yesterday), and three risk-listed: 2017 UP43, 2017 VJ, and intruder 2017 VL2. Additionally, the DOU has astrometry from this June-July for 441987 2010 NY65 and 418094 2007 WV4, and yesterday's radar included 503941 2003 UV11 from October, when it was distant (beyond 14 LD, to be exact).

Reading:  News releases yesterday from the universities of Maryland and Washington announced first light for the new Zwicky Transient Facility (ZTF) camera mounted on the historic 1.2m Oschin Telescope on Mount Palomar. It is scheduled to go into operation in February to discover transient astromical events including near-Earth objects, and is a follow-on project to the Palomar Transient Factory (PTF), which our records show received discovery credit during 2014-15 for twelve asteroids that came within ten LD of Earth.



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. "Distant" is used here to describe an object that has come within ten LD since A/CC began these traffic reports (2007) but presently is not so close. 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 15 November '17

Radar observation of one object

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


Data update noted at 0103 UTC when the database was dated 14 Nov.

NEOCP Activity  on 15 November '17

The MPC's NEO Confirmation Page has 86 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 86 objects listed. Of these, 38 were "one nighters." So far The Tracking News has counted a total of 105 listings on the NEOCP today.

New MPECs  on 15 November '17

Minor Planet Electronic Circulars

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


MPEC 2017-V91 - "17:49 UT" - 2017 VN13


MPEC 2017-V90 - "17:45 UT" - 2017 VB13


MPEC 2017-V89 - "17:41 UT" - 2017 VM13


MPEC 2017-V88 - "17:36 UT" - 2017 VL13


MPEC 2017-V87 - "17:32 UT" - 2017 VK13


MPEC 2017-V86 - "17:28 UT" - 2017 VJ13


MPEC 2017-V85 - "17:24 UT" - 2017 VH13


MPEC 2017-V84 - "17:20 UT" - 2017 VG13


MPEC 2017-V83 - "17:17 UT" - 2017 VF13


MPEC 2017-V82 - "17:04 UT" - 2017 VE13


MPEC 2017-V81 - "16:58 UT" - 2017 VD13


MPEC 2017-V80 - "16:53 UT" - 2017 VC13


MPEC 2017-V79 - "16:48 UT" - 2017 VA13


<< DOU on 15 Nov. '17 >>  MPEC 2017-V78 - "13:05 UT" - Daily Orbit Update


MPEC 2017-V77 - "11:36 UT" - 2017 QH18


MPEC 2017-V76 - "04:49 UT" - 2017 VV12

Observers  on 15 November '17

A total of 43 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 12 in MPECs 2017-V78, 2017-V79, 2017-V83 & 2017-V84 -- 2017 VM2, 2017 VG13, 2017 VF13, 2017 VA13, 2017 UE45, 2017 TR3, 2017 PL26, 2017 KV4, 2014 JK25, 2012 LE11, 2006 KQ21, 259802
T05ATLAS Haleakala in Hawaii, 5 in MPEC 2017-V78 -- 2017 SO17, 85839, 500749, 499490, 333888
T08ATLAS Mauna Loa in Hawaii, 11 in MPECs 2017-V78 & 2017-V89 -- 2017 VM13, 2017 VE2, 2017 PS30, 53110, 496818, 411201, 171576, 16657, 163696, 11405, 3361
C77Bernezzo Obs. in Italy, 1 in MPEC 2017-V76 -- 2017 VV12
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2017-V90 -- 2017 VB13
160Castelmartini Obs. in Italy, 8 in MPEC 2017-V78 -- 2017 RV1, 2017 PR25, 68950, 496018, 496005, 441825, 265962, 142040
703Catalina Sky Survey (CSS) in Arizona, 20 in MPECs 2017-V76, 2017-V78 & 2017-V82 -- 2017 VV12, 2017 VE13, 2017 VB2, 2015 WA2, 2014 UR116, 2010 VT11, 96590, 85839, 85628, 505178, 504505, 420302, 415029, 337228, 20086, 19764, 162273, 154991, 8037, 2212
K51Celado Obs. in Italy, 2 in MPECs 2017-V76 & 2017-V89 -- 2017 VV12, 2017 VM13
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2017-V78 -- 2017 QW34, 2017 HN49
A77Chante-Perdrix Obs. in France, 1 in MPEC 2017-V78 -- 3200
J27El Guijo Obs. in Spain, 2 in MPEC 2017-V78 -- 17511, 8037
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 12 in MPECs 2017-V76, 2017-V78 & 2017-V91 -- 2017 VV12, 2017 VU12, 2017 VS12, 2017 VR12, 2017 VN2, 2017 VN13, 2017 VJ, 2017 UR51, 2017 UP43, 2017 UN44, 2017 UK43, 2017 UE43
006Fabra Obs. in Spain, 2 in MPEC 2017-V78 -- 99907, 444584
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2017-V89 -- 2017 VM13
W46Foxfire Village Obs., 1 in MPEC 2017-V78 -- 3361
203GiaGa Obs. in Italy, 2 in MPECs 2017-V76 & 2017-V82 -- 2017 VV12, 2017 VE13
253Goldstone DSS-14 70m antenna in southern California, 1 in radar -- 496816
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-V78 -- 9950
H06iTelescope Obs. Mayhill in New Mexico, 2 in MPEC 2017-V78 -- 3200, 3122
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2017-V78 -- 497113
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2017-V78 -- 2005 XB1
K91LCO Sutherland A in South Africa, 1 in MPEC 2017-V78 -- 2005 XB1
K30Luscherz Obs. in Switzerland, 1 in MPEC 2017-V76 -- 2017 VV12
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2017-V76 & 2017-V91 -- 2017 VV12, 2017 VN13
711McDonald Obs. in Texas, 1 in MPEC 2017-V90 -- 2017 VB13
474Mt. John Obs. in New Zealand, 7 in MPEC 2017-V78 -- 2017 VV, 2017 VT, 2017 VL2, 2017 VJ1, 2017 UC8, 2017 TV4, 2015 FH120
G96Mt. Lemmon Survey (MLS) in Arizona, 36 in MPECs 2017-V76, 2017-V78, 2017-V79, 2017-V81, 2017-V86, 2017-V87, 2017-V88, 2017-V90 & 2017-V91 -- 2017 VV12, 2017 VN13, 2017 VL13, 2017 VK13, 2017 VK1, 2017 VJ13, 2017 VD13, 2017 VB2, 2017 VB13, 2017 VA13, 2017 UY44, 2017 UW42, 2017 SO17, 2017 PB27, 2017 OQ68, 2014 VU1, 2014 UR116, 2010 VT11, 2008 WQ63, 85839, 505178, 504505, 498143, 495891, 415029, 29075, 26663, 20086, 19764, 164211, 162273, 154991, 142563, 8034, 2368, 2212
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2017-V78 -- 2017 SO17
644NEAT's Mt. Palomar telescope in southern California, 1 in MPEC 2017-V77 -- 2017 QH18
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2017-V77 -- 2017 QH18
F51Pan-STARRS 1 (PS1) in Hawaii, 8 in MPECs 2017-V80, 2017-V82, 2017-V83, 2017-V84, 2017-V85, 2017-V86, 2017-V87 & 2017-V88 -- 2017 VL13, 2017 VK13, 2017 VJ13, 2017 VH13, 2017 VG13, 2017 VF13, 2017 VE13, 2017 VC13
Z38Picoto Obs., 2 in MPEC 2017-V78 -- 85839, 8037
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 11 in MPEC 2017-V78 -- 2017 BM31, 2014 YC15, 2010 VB1, 90075, 441987, 422699, 418094, 416584, 366733, 190166, 6063
D29Purple Mtn. Obs. Xuyi Station in China, 4 in MPEC 2017-V78 -- 2017 UZ4, 88264, 136849, 4486
W25RMS Obs., 4 in MPECs 2017-V78, 2017-V82, 2017-V89 & 2017-V90 -- 2017 VV12, 2017 VM13, 2017 VE13, 2017 VB13
204Schiaparelli Obs. in Italy, 4 in MPECs 2017-V76, 2017-V82, 2017-V84 & 2017-V89 -- 2017 VV12, 2017 VM13, 2017 VG13, 2017 VE13
033Schwarzschild Obs. in Germany, 4 in MPECs 2017-V79, 2017-V81, 2017-V86 & 2017-V90 -- 2017 VJ13, 2017 VD13, 2017 VB13, 2017 VA13
691Spacewatch 0.9m telescope in Arizona, 20 in MPECs 2017-V78, 2017-V87 & 2017-V88 -- 2017 VL13, 2017 VK13, 2017 VJ, 2017 UX4, 2017 UO, 2017 TN6, 2017 TH6, 2017 SV20, 2017 SF14, 2017 RL1, 2017 QL33, 2017 OP19, 2016 VO1, 2015 UK52, 2014 XJ3, 2014 PG51, 2012 XM145, 2010 VT11, 2009 TK8, 2006 YY2
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2017-V80, 2017-V81, 2017-V83, 2017-V84, 2017-V85 & 2017-V88 -- 2017 VL13, 2017 VH13, 2017 VG13, 2017 VF13, 2017 VD13, 2017 VC13
I93St. Pardon de Conques Obs. in France, 5 in MPECs 2017-V76, 2017-V82, 2017-V89, 2017-V90 & 2017-V91 -- 2017 VV12, 2017 VN13, 2017 VM13, 2017 VE13, 2017 VB13
I52Steward Obs. Mt. Lemmon Station in Arizona, 33 in MPECs 2017-V76, 2017-V78, 2017-V79, 2017-V80, 2017-V81, 2017-V82, 2017-V83, 2017-V85, 2017-V86, 2017-V87, 2017-V88, 2017-V90 & 2017-V91 -- 2017 VY1, 2017 VX1, 2017 VV12, 2017 VV, 2017 VN2, 2017 VN13, 2017 VL13, 2017 VK13, 2017 VJ13, 2017 VH13, 2017 VH1, 2017 VF13, 2017 VE2, 2017 VE13, 2017 VD2, 2017 VD13, 2017 VD, 2017 VC13, 2017 VB2, 2017 VB13, 2017 VA13, 2017 VA, 2017 UY42, 2017 UP44, 2017 UH44, 2017 TY4, 2017 SX11, 2017 SW14, 2015 BO509, 2014 VT6, 2013 QN10, 2011 WD39, 20086
926Tenagra II Obs. in Arizona, 11 in MPECs 2017-V76, 2017-V78, 2017-V79, 2017-V80, 2017-V82, 2017-V85, 2017-V86, 2017-V87, 2017-V88, 2017-V89, 2017-V90 & 2017-V91 -- 2017 VV12, 2017 VN13, 2017 VM13, 2017 VL13, 2017 VK13, 2017 VJ13, 2017 VH13, 2017 VE13, 2017 VC13, 2017 VB13, 2017 VA13
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-V78 -- 2010 GP67
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 15 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 VV12JPL Sentry17022062-2116142.136569e-05-6.47-6.960JPL #2 for the day: Computed at 08:42 today Pacific time based on 68 observations spanning 1.0496 days (2017-Nov-14.20121 to 2017-Nov-15.25083). Diameter approximately 0.009 km. from weighted mean H=27.99.
NEODyS15482062-2116102.72e-06-7.28-7.630NEODyS: "Based on 60 optical observations (of which 14 are rejected as outliers) from 2017-11-14.202 to 2017-11-15.112."
2017 VR12JPL Sentry17302029-21171842.4866384e-06-3.27-3.450JPL: Computed at 09:14 today Pacific time based on 31 observations spanning 4.4160 days (2017-Nov-10.58175 to 2017-Nov-14.997731). Diameter approximately 0.282 km. from weighted mean H=20.38.
NEODyS15482043-2115311.73e-07-4.72-5.090NEODyS: "Based on 28 optical observations (of which 3 are rejected as outliers) from 2017-11-10.583 to 2017-11-14.378."
2017 VN2JPL Sentry1800R E M O V E DJPL: Risk listing removed at 1745 UTC today
NEODyS15482099-211492.0e-06-7.30-7.70NEODyS: "Based on 35 optical observations (of which 11 are rejected as outliers) from 2017-11-12.230 to 2017-11-14.182."
2017 VL2JPL Sentry17302080-21161170.0002691008688-4.44-5.030JPL: Computed at 09:14 today Pacific time based on 24 observations spanning 4.1150 days (2017-Nov-10.47521 to 2017-Nov-14.59018). Diameter approximately 0.020 km. from weighted mean H=26.12.
2017 VTJPL Sentry17022087-208728.164e-08-5.19-5.190JPL: Computed at 08:58 today Pacific time based on 30 observations spanning 10.459 days (2017-Nov-03.99656 to 2017-Nov-14.45601). Diameter approximately 0.210 km. from weighted mean H=21.07.
NEODyS1548208711.22e-09-6.98-6.980NEODyS: "Based on 27 optical observations (of which 5 are rejected as outliers) from 2017-11-03.997 to 2017-11-13.475."
2017 VJJPL Sentry17022094-2116332.36836761e-05-4.69-4.930JPL: Computed at 08:50 today Pacific time based on 26 observations spanning 9.9329 days (2017-Nov-05.41077 to 2017-Nov-15.34363). Diameter approximately 0.040 km. from weighted mean H=24.65.
NEODyS15482094-2116483.56e-06-5.50-6.140NEODyS: "Based on 20 optical observations (of which 0 are rejected as outliers) from 2017-11-05.412 to 2017-11-14.260."
2017 UR51JPL Sentry17022049-2099182.59679793e-05-3.30-3.520JPL: Computed at 08:32 today Pacific time based on 17 observations spanning 15.512 days (2017-Oct-30.52142 to 2017-Nov-15.033551). Diameter approximately 0.106 km. from weighted mean H=22.54.
NEODyS15482037-2117172.78e-05-3.25-3.270NEODyS: "Based on 15 optical observations (of which 1 are rejected as outliers) from 2017-10-30.522 to 2017-11-13.581."
2017 UA45NEODyS15482074-2117902.89e-04-4.42-4.560NEODyS: "Based on 22 optical observations (of which 2 are rejected as outliers) from 2017-10-27.475 to 2017-11-13.514."
2017 UP43JPL Sentry17022110-211656.4946e-06-6.25-6.540JPL: Computed at 08:49 today Pacific time based on 46 observations spanning 16.418 days (2017-Oct-29.48637 to 2017-Nov-14.904755). Diameter approximately 0.018 km. from weighted mean H=26.38.
2017 UE43JPL Sentry16302045-2113108.25329e-06-4.77-5.340JPL: Computed at 07:55 today Pacific time based on 25 observations spanning 17.598 days (2017-Oct-28.36401 to 2017-Nov-14.961716). Diameter approximately 0.059 km. from weighted mean H=23.81.
2017 PL26JPL Sentry1630R E M O V E DJPL: Risk listing removed at 1556 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 15 November '17

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

1948Generated Traffic Report
1800Noted that JPL Sentry has removed 2017 VN2 as an impact risk - see above
Grabbed MPEC 2017-V87 - 2017 VK13 - see above
Grabbed MPEC 2017-V88 - 2017 VL13 - see above
Grabbed MPEC 2017-V89 - 2017 VM13 - see above
Grabbed MPEC 2017-V90 - 2017 VB13 - see above
Grabbed MPEC 2017-V91 - 2017 VN13 - see above
1730Noted that JPL Sentry has updated its 2017 VL2 risk assessment - see above
Noted that JPL Sentry has updated its 2017 VR12 risk assessment - see above
Grabbed MPEC 2017-V82 - 2017 VE13 - see above
Grabbed MPEC 2017-V83 - 2017 VF13 - see above
Grabbed MPEC 2017-V84 - 2017 VG13 - see above
Grabbed MPEC 2017-V85 - 2017 VH13 - see above
Grabbed MPEC 2017-V86 - 2017 VJ13 - see above
1702Noted that JPL Sentry has updated its 2017 UP43 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
Noted that JPL Sentry has updated its 2017 VT risk assessment - see above
Noted that JPL Sentry has updated its 2017 VV12 risk assessment - see above
Grabbed MPEC 2017-V79 - 2017 VA13 - see above
Grabbed MPEC 2017-V80 - 2017 VC13 - see above
Grabbed MPEC 2017-V81 - 2017 VD13 - see above
1630Noted that JPL Sentry has removed 2017 PL26 as an impact risk - see above
Noted that JPL Sentry has updated its 2017 UE43 risk assessment - see above
1548Noted that NEODyS has updated its 2017 UA45 risk assessment - see above
Noted that NEODyS has updated its 2017 UR51 risk assessment - see above
Noted that NEODyS has updated its 2017 VJ risk assessment - see above
Noted that NEODyS has updated its 2017 VN2 risk assessment - see above
Noted that NEODyS has posted 2017 VR12 as an impact risk - see above
Noted that NEODyS has updated its 2017 VT risk assessment - see above
Noted that JPL Sentry has posted 2017 VV12 as an impact risk - see above
Noted that NEODyS has posted 2017 VV12 as an impact risk - see above
Grabbed MPEC 2017-V77 - 2017 QH18 - see above
Grabbed MPEC 2017-V78 - Daily Orbit Update - see above
0500Grabbed MPEC 2017-V76 - 2017 VV12 - see above
0103Noted Radar Astrometry database update - see above