Contents  on 6 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 6 November '17

Three objects reported inside ten LD

Today three asteroids are reported within ten lunar distances (LD) of Earth. Nearest is outbound risk-listed 2017 UJ43, moving away from 4.62 to 5.19 LD.

Earth passage I D ~Size Distance Today  Notes
4.54 LD yesterday2017 UJ43 10 m  4.62 to 5.19 LD risk
4.68 LD Nov. 12017 UD43 7 m  9.49 to 11.25 LD exits ten LD
7.05 LD yesterday2017 US7 13 m  7.20 to 7.85 LD
Approaching
8.66 LD Nov. 17444584 2006 UK 309 m  < 10 LD Nov. 16

This report was generated at 1752 UTC with follow-up in today's DOU MPEC for departed 171576 1999 VP11 and astrometry from last month for 2017 TL2 and 2017 TT1.



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 6 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 2132 UTC when the database was dated 6 Nov.


Data update noted at 2305 UTC when the database was dated 6 Nov.

NEOCP Activity  on 6 November '17

The MPC's NEO Confirmation Page has 60 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 60 objects listed. Of these, 20 were "one nighters." So far The Tracking News has counted a total of 70 listings on the NEOCP today.

New MPECs  on 6 November '17

Minor Planet Electronic Circulars

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


MPEC 2017-V24 - "23:18 UT" - 2017 VE


MPEC 2017-V23 - "23:14 UT" - 2017 VD


MPEC 2017-V22 - "23:10 UT" - 2017 VC


MPEC 2017-V21 - "23:07 UT" - 2017 UE45


MPEC 2017-V20 - "23:03 UT" - 2017 UD45


MPEC 2017-V19 - "22:58 UT" - 2017 UC45


MPEC 2017-V18 - "22:45 UT" - 2017 VB


MPEC 2017-V17 - "21:00 UT" - New Designation Scheme for Interstellar Objects

"Correct forms for referring to [A/2017 U1] are therefore: 1I; 1I/2017 U1; 1I/'Oumuamua; and 1I/2017 U1 ('Oumuamua)."


<< DOU on 6 Nov. '17 >>  MPEC 2017-V16 - "13:03 UT" - Daily Orbit Update

Observers  on 6 November '17

A total of 34 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 2 in MPECs 2017-V16 & 2017-V19 -- 2017 UJ8, 2017 UC45
T05ATLAS Haleakala in Hawaii, 13 in MPECs 2017-V16 & 2017-V23 -- 2017 VD, 2017 UZ42, 90075, 65679, 497176, 411201, 171576, 162998, 7336, 5189, 3361, 1980, 1865
T08ATLAS Mauna Loa in Hawaii, 11 in MPECs 2017-V16, 2017-V23 & 2017-V24 -- 2017 VE, 2017 VD, 2014 YC15, 500749, 496005, 457768, 190208, 17182, 137062, 111253, 3200
160Castelmartini Obs. in Italy, 23 in MPEC 2017-V16 -- 2017 SO17, 2008 AX28, 99907, 96631, 96590, 68950, 65679, 497176, 496817, 496816, 495858, 457768, 333888, 265962, 162998, 162011, 143992, 142040, 140158, 137062, 8567, 3200, 1864
703Catalina Sky Survey in Arizona, 1 in MPEC 2017-V21 -- 2017 UE45
107Cavezzo Obs. in Italy, 2 in MPEC 2017-V16 -- 2014 YC15, 338292
K51Celado Obs. in Italy, 1 in MPEC 2017-V21 -- 2017 UE45
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2017-V19, 2017-V20 & 2017-V22 -- 2017 VC, 2017 UD45, 2017 UC45
970Chelmsford Obs. in England, 1 in MPEC 2017-V23 -- 2017 VD
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2017-V21 -- 2017 UE45
253Goldstone DSS-14 70m antenna in southern California, 2 in radar -- 496817, 310560
J95Great Shefford Obs. in England, 4 in MPECs 2017-V21, 2017-V22, 2017-V23 & 2017-V24 -- 2017 VE, 2017 VD, 2017 VC, 2017 UE45
G48Harlingten Research Obs. in New Mexico, 1 in MPEC 2017-V23 -- 2017 VD
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2017-V23 -- 2017 VD
K38M57 Obs. in Italy, 1 in MPEC 2017-V21 -- 2017 UE45
118Modra Obs. in Slovakia, 1 in MPEC 2017-V21 -- 2017 UE45
J69North Obs. in England, 3 in MPECs 2017-V16, 2017-V21 & 2017-V23 -- 2017 VD, 2017 UE45, 1998 WP7
Z80Northolt Branch Obs. in England, 8 in MPECs 2017-V16, 2017-V21 & 2017-V23 -- 2017 VD, 2017 UE45, 2017 SL2, 1998 WP7, 99907, 496817, 333888, 3200
C23Olmen Obs. in Belgium, 1 in MPEC 2017-V23 -- 2017 VD
J43Oukaimeden Obs. in Morocco, 5 in MPEC 2017-V16 -- 2017 QL18, 2017 HH, 85839, 154991, 2212
F51Pan-STARRS 1 (PS1) in Hawaii, 10 in MPECs 2017-V16, 2017-V18, 2017-V19, 2017-V20, 2017-V21 & 2017-V22 -- 2017 VC, 2017 VB, 2017 UE45, 2017 UD45, 2017 UC45, 2017 OD1, 53110, 253586, 162186, 13651
K63Pascoli Obs. in Italy, 1 in MPEC 2017-V21 -- 2017 UE45
B49Paus Obs. in Spain, 2 in MPECs 2017-V23 & 2017-V24 -- 2017 VE, 2017 VD
Z38Picoto Obs., 1 in MPEC 2017-V16 -- 8037
D29Purple Mtn. Obs. Xuyi Station in China, 9 in MPEC 2017-V16 -- 96631, 85709, 65679, 411201, 265962, 242211, 17182, 7977, 3200
L04ROASTERR-1 in Romania, 4 in MPECs 2017-V21, 2017-V22, 2017-V23 & 2017-V24 -- 2017 VE, 2017 VD, 2017 VC, 2017 UE45
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2017-V21 -- 2017 UE45
C95SATINO-1 in France, 1 in MPEC 2017-V21 -- 2017 UE45
204Schiaparelli Obs. in Italy, 26 in MPEC 2017-V16 -- 2017 UT, 2017 UJ5, 2017 TT1, 2017 TP2, 2017 TM2, 2017 TL2, 2017 TK1, 2017 TC1, 2017 SY20, 2017 SP12, 2017 SL2, 2017 RR15, 2017 QL35, 2017 PC27, 2017 PB27, 2017 PA27, 2017 OR19, 2017 OQ68, 2017 OJ7, 2017 OG68, 2017 NS6, 2017 MV2, 2017 MO7, 2014 VM, 2013 QH48, 2011 UG20
G40'program code "'" (16) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-V21 -- 2017 UE45
291Spacewatch 1.8m telescope in Arizona, 4 in MPECs 2017-V16, 2017-V18 & 2017-V19 -- 2017 VB, 2017 UY42, 2017 UC45, 2017 TH6
J22Tacande Obs. in the Canary Islands, 1 in MPEC 2017-V22 -- 2017 VC
926Tenagra II Obs. in Arizona, 9 in MPECs 2017-V16, 2017-V18, 2017-V21, 2017-V22, 2017-V23 & 2017-V24 -- 2017 VE, 2017 VD, 2017 VC, 2017 VB, 2017 UT, 2017 UE5, 2017 UE45, 2017 TY4, 2017 TD4
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-V16 -- 2011 GS60
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 6 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 TP2JPL Sentry16182090-209015.893e-08-7.18-7.180JPL: Computed at 07:48 today Pacific time based on 27 observations spanning 19.332 days (2017-Oct-11.17727 to 2017-Oct-30.50888). Diameter approximately 0.043 km. from weighted mean H=24.50.

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 6 November '17

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

2328Grabbed MPEC 2017-V21 - 2017 UE45 - see above
Grabbed MPEC 2017-V22 - 2017 VC - see above
Grabbed MPEC 2017-V23 - 2017 VD - see above
Grabbed MPEC 2017-V24 - 2017 VE - see above
2305Grabbed MPEC 2017-V17 - New Designation Scheme for Interstellar Objects - see above
Grabbed MPEC 2017-V18 - 2017 VB - see above
Grabbed MPEC 2017-V19 - 2017 UC45 - see above
Grabbed MPEC 2017-V20 - 2017 UD45 - see above
Noted Radar Astrometry database update - see above
2132Noted Radar Astrometry database update - see above
1752Generated Traffic Report
1618Noted that JPL Sentry has updated its 2017 TP2 risk assessment - see above
Grabbed MPEC 2017-V16 - Daily Orbit Update - see above