Contents  on 30 November '16

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 30 November '16

Eight objects reported inside ten LD

Today eight visitors are reported traveling with ten lunar distances (LD) of our home world. Nearest is NHATS target 2016 WQ3, moving in from 2.03 to 1.60 LD. Out further, 2016 WZ8 comes its closest to Earth this time around, reaching 4.15 LD at 1846 UTC, as does 2016 WQ -- 4.45 LD at 1055 UT, and NHATS target 2016 WB8 enters our ten-LD traffic reporting sphere, sliding in from 11.29 to 9.54 LD.

Earth passage I D ~Size Distance Today  Notes
1.46 LD Nov. 252016 WU2 11 m  8.26 to 9.91 LD NHATS target
1.48 LD Dec. 12016 WQ3 6 m  1.60 from 2.03 LD NHATS target, inside Earth SOI - DOU
1.73 LD Nov. 172016 WY 5 m  9.12 to 9.82 LD Moon buzzer, NHATS target, risk
2.61 LD Dec. 12016 WG7 22 m  2.78 from 3.58 LD NHATS target - DOU
3.61 LD Dec. 52016 WB8 23 m  9.54 from 11.29 LD enters ten LD, NHATS target - DOU
4.15 LD today2016 WZ8 7 m  4.15 LD NHATS target, Earth closest at 1846 UTC - DOU
4.18 LD Dec. 62016 WD7 12 m  5.38 from 5.80 LD NHATS target - DOU
4.45 LD today2016 WQ 26 m  4.45 LD Earth closest at 1055 UTC - DOU
Approaching
5.1   LD Dec. 82016 WQ8 39 m  < 10 LD Dec. 6, uncertainty +/- 17 mins.
6.2   LD Dec. 212015 YQ1 9 m  < 10 LD Dec. 18, uncertainty +/- 20 mins., NHATS target
7.43 LD Dec. 132015 XX169 11 m  < 10 LD Dec. 9, NHATS target
9.61 LD Dec. 132015 YA 11 m  < 10 LD Dec. 12, NHATS target

This report was updated at 1944 UTC with first follow-up for 2016 WZ8, 2016 WD7, and departed 2016 WR8 in today's DOU MPEC along with continuing follow-up for 2016 WB8, 2016 WG7, 2016 WQ3, 2016 WQ, and four departed objects: 2016 WA8, 2016 WV2, NHATS target 2016 WT7, and risk-listed 2016 WQ1, plus distant NHATS targets 2012 UK171 and 208023 1999 AQ10. Your first neighborhood natural objects traffic report was generated at 0511 UTC.



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

NEOCP Activity  on 30 November '16

The MPC's NEO Confirmation Page has 55 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 55 objects listed. Of these, 30 were "one nighters." The Tracking News counted a total of 75 listings on the NEOCP on this day.

New MPECs  on 30 November '16

Minor Planet Electronic Circulars

There were three MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 30 Nov. '16 >>  MPEC 2016-W127 - "13:04 UT" - Daily Orbit Update


MPEC 2016-W126 - "04:24 UT" - 2016 WG9


MPEC 2016-W125 - "04:19 UT" - 2016 WF9

Observers  on 30 November '16

A total of 39 observers appeared in this day's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2016-W127 -- 2016 UM5
T05ATLAS Haleakala in Hawaii, 7 in MPEC 2016-W127 -- 2016 WJ1, 2012 UK171, 2006 UM, 2005 WS3, 433953, 5836, 3360
U78Cedar Glen Obs. in southern California, 1 in MPEC 2016-W127 -- 2016 PZ66
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 14 in MPECs 2016-W125 & 2016-W127 -- 2016 WS7, 2016 WR7, 2016 WP, 2016 WN8, 2016 WF9, 2016 VU3, 2016 UW35, 2016 UT80, 2016 TH93, 2016 SF17, 2016 RU, 2016 QY10, 2016 PD1, 2016 JH17
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 8 in MPEC 2016-W127 -- 2016 WQ1, 2016 WN1, 2016 WJ7, 2016 WJ1, 2016 WD7, 2013 YE38, 2010 XO56, 2006 WO3
151Eschenberg Obs. in Switzerland, 2 in MPEC 2016-W127 -- 2016 WJ1, 2007 VM184
734Farpoint Obs. in Kansas, 1 in MPEC 2016-W126 -- 2016 WG9
E108program code 8 via Faulkes Telescope South in New South Wales, 1 in MPEC 2016-W127 -- 2016 WJ1
203GiaGa Obs. in Italy, 3 in MPEC 2016-W127 -- 2016 WU3, 2016 WJ1, 2016 WG7
J95Great Shefford Obs. in England, 4 in MPECs 2016-W126 & 2016-W127 -- 2016 WZ8, 2016 WY8, 2016 WJ8, 2016 WG9
H15ISON New Mexico Obs. in New Mexico, 2 in MPEC 2016-W127 -- 36236, 26760
Q60ISON Siding Spring Obs. in New South Wales, 2 in MPEC 2016-W127 -- 2016 UU80, 2016 CZ135
Q62|Sergio Foglia in Italy via iTelescope Obs. Siding Spring in New South Wales, 2 in MPEC 2016-W127 -- 2016 WJ1, 2013 YE38
C55Kepler Space Telescope in Earth-trailing heliocentric orbit, 1 in MPEC 2016-W127 -- 2015 BO859
246KLENOT in the Czech Republic, 17 in MPEC 2016-W127 -- 2016 WZ7, 2016 WU3, 2016 WO7, 2016 WO1, 2016 WL7, 2016 WJ1, 2016 WG7, 2016 WD7, 2016 WB8, 2016 VP4, 2012 WK4, 2012 UK171, 2010 XX72, 2010 XM69, 2007 VM184, 2006 WO3, 3200
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2016-W127 -- 2016 WG7
V37LCOGT Fort Davis in Texas, 1 in MPEC 2016-W127 -- 2016 WG7
Q64LCOGT Siding Spring B in New South Wales, 1 in MPEC 2016-W125 -- 2016 WF9
K91LCOGT Sutherland A in South Africa, 1 in MPEC 2016-W127 -- 2016 WG9
K38M57 Obs. in Italy, 2 in MPEC 2016-W127 -- 2006 UM, 345705
Z22MASTER IAC Obs. in the Canary Islands, 3 in MPEC 2016-W127 -- 154244, 5626, 1036
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2016-W127 -- 385343
474Mt. John Obs. in New Zealand, 7 in MPEC 2016-W127 -- 2016 WT7, 2016 WR8, 2016 WQ, 2016 WC8, 2016 VS5, 2016 VG3, 2013 YE38
A13Naef Obs. in Switzerland, 3 in MPEC 2016-W127 -- 2016 WU3, 2006 WO3, 378124
566NEAT's GEODSS Haleakala telescope in Hawaii, 1 in MPEC 2016-W127 -- 24445
644NEAT's Mt. Palomar telescope in southern California, 6 in MPEC 2016-W127 -- 2002 MU7, 40329, 24445, 16816, 137032, 7341
608NEAT's USAF Haleakala telescope in Hawaii, 5 in MPEC 2016-W127 -- 24445, 16816, 106589, 7341, 1943
C47Nonndorf Obs. in Austria, 2 in MPEC 2016-W127 -- 2016 WJ1, 2016 WG7
J69North Obs. in England, 1 in MPEC 2016-W127 -- 2013 YE38
Z80Northolt Branch Obs. in England, 7 in MPEC 2016-W127 -- 2016 WJ1, 2016 PZ66, 2006 UM, 36236, 345705, 326683, 5653
F51Pan-STARRS 1 (PS1) in Hawaii, 2 in MPECs 2016-W126 & 2016-W127 -- 2016 WG9, 2013 YE38
A53Peschiera del Garda Obs. in Italy, 2 in MPEC 2016-W127 -- 2016 WG7, 2006 UM
033Schwarzschild Obs. in Germany, 4 in MPECs 2016-W126 & 2016-W127 -- 2016 WZ8, 2016 WG9, 2016 WB9, 2013 YE38
691Spacewatch 0.9m telescope in Arizona, 1 in MPEC 2016-W127 -- 459386
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2016-W125 & 2016-W127 -- 2016 WP, 2016 WF9, 2016 LZ10, 2015 XF261, 2014 YS34, 2012 YK, 2010 AH30, 467309, 208023, 192559
I52Steward Obs. Mt. Lemmon Station in Arizona, 12 in MPEC 2016-W127 -- 2016 WV2, 2016 WS7, 2016 WN8, 2016 WM8, 2016 WM7, 2016 WL7, 2016 WJ7, 2016 WG9, 2016 WG7, 2016 WD7, 2016 WD3, 2016 VS5
926Tenagra II Obs. in Arizona, 10 in MPEC 2016-W127 -- 2016 WZ8, 2016 WV7, 2016 WR7, 2016 WQ3, 2016 WP1, 2016 WL7, 2016 WD7, 2016 WB8, 2016 WA8, 2015 ME54
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPECs 2016-W125 & 2016-W127 -- 2016 WJ1, 2016 WF9, 2016 UF101
C51WISE in Earth polar orbit, 2 in MPECs 2016-W125 & 2016-W127 -- 2016 WF9, 2015 QM3
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 30 November '16

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 WF9NEODyS17072036-2114121.09e-08-5.50-5.80NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2016-11-27.270 to 2016-11-30.149."
JPL Sentry06362029-2114271.7e-07-3.91-4.290JPL: "Analysis based on 27 observations spanning 2.8798 days (2016-Nov-27.26884 to 2016-Nov-30.14865)." Diameter approximately 0.362 km. from mean, weighted H=19.9.
2016 WJ8NEODyS17302023-2113642.03e-07-3.30-4.070NEODyS: "Based on 32 optical observations (of which 1 are rejected as outliers) from 2016-11-24.244 to 2016-11-29.818."
JPL Sentry17072023-2113522.3e-07-3.18-3.850JPL: "Analysis based on 31 observations spanning 5.5743 days (2016-Nov-24.24332 to 2016-Nov-29.81765)." Diameter approximately 0.759 km. from mean, weighted H=18.3.
2016 WQ1JPL Sentry16432046-205822.0e-07-8.01-8.020JPL: "Analysis based on 52 observations spanning 9.7182 days (2016-Nov-20.40832 to 2016-Nov-30.126495)." Diameter approximately 0.009 km. from mean, weighted H=27.9.
2016 WN1NEODyS1707211214.14e-05-4.69-4.690NEODyS: "Based on 38 optical observations (of which 0 are rejected as outliers) from 2016-11-19.261 to 2016-11-29.961."
JPL Sentry1643211212.6e-05-4.89-4.890JPL: "Analysis based on 38 observations spanning 10.700 days (2016-Nov-19.26009 to 2016-Nov-29.96015)." Diameter approximately 0.030 km. from mean, weighted H=25.2.
2016 WJ1JPL Sentry18392030-2114572.3e-04-1.78-2.081JPL: "Analysis based on 184 observations spanning 10.552 days (2016-Nov-19.46522 to 2016-Nov-30.01769)." Diameter approximately 0.180 km. from mean, weighted H=21.4.
NEODyS17072030-21141112.35e-04-1.78-2.11NEODyS: "Based on 184 optical observations (of which 0 are rejected as outliers) from 2016-11-19.466 to 2016-11-30.018."
2016 UF101JPL Sentry1816209111.5e-07-5.43-5.430JPL #2 for the day: "Analysis based on 66 observations spanning 30.214 days (2016-Oct-30.06761 to 2016-Nov-29.281177)." Diameter approximately 0.160 km. from mean, weighted H=21.7.
NEODyS1707209112.94e-07-5.14-5.140NEODyS: "Based on 70 optical observations (of which 4 are rejected as outliers) from 2016-10-30.068 to 2016-11-29.282."

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 30 November '16

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

1944Updated Traffic Report
1839Noted that JPL Sentry has updated its 2016 WJ1 risk assessment - see above
1816Noted that JPL Sentry has updated its 2016 UF101 risk assessment - see above
1730Noted that NEODyS has updated its 2016 WJ8 risk assessment - see above
1707Noted that NEODyS has updated its 2016 UF101 risk assessment - see above
Noted that NEODyS has posted 2016 WF9 as an impact risk - see above
Noted that NEODyS has updated its 2016 WJ1 risk assessment - see above
Noted that JPL Sentry has updated its 2016 WJ8 risk assessment - see above
Noted that NEODyS has updated its 2016 WN1 risk assessment - see above
1643Noted that JPL Sentry has reposted 2016 UF101 as an impact risk - see above
Noted that JPL Sentry has updated its 2016 WN1 risk assessment - see above
Noted that JPL Sentry has updated its 2016 WQ1 risk assessment - see above
Grabbed MPEC 2016-W127 - Daily Orbit Update - see above
0636Noted that JPL Sentry has posted 2016 WF9 as an impact risk - see above
0430Grabbed MPEC 2016-W125 - 2016 WF9 - see above
Grabbed MPEC 2016-W126 - 2016 WG9 - see above