Contents  on 17 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 17 November '17

Nine objects reported inside ten LD

Today nine planetesimals are known to be inside ten lunar distances (LD) of Earth. Nearest is risk-listed 2017 VC14, which enters our planet's sphere of gravitational influence (SOI), coming in from 2.97 to 1.27 LD.

Earth passage I D ~Size Distance Today  Notes
0.80 LD Nov. 132017 VF14 7 m  8.97 to 11.63 LD exits ten LD, intruder, risk
1.25 LD tomorrow2017 VC14 7 m  1.27 from 2.97 LD enters Earth SOI, risk - DOU
1.86 LD Nov. 152017 VV12 9 m  2.72 to 3.91 LD risk - DOU
1.86 LD Nov. 132017 WD 8 m  8.59 to 10.95 LD NEW, exits ten LD - MPEC
2.94 LD Nov. 202017 WC 21 m  4.65 from 6.06 LD NEW - MPEC
2.97 LD Nov. 152017 VN13 9 m  3.75 to 5.22 LD DOU
6.16 LD tomorrow2017 VN2 11 m  6.19 from 6.41 LD risk
7.36 LD Nov. 152017 WB 31 m  7.72 to 8.54 LD NEW - MPEC
8.66 LD today444584 2006 UK 309 m  8.66 LD Earth closest at 2108 UTC - DOU

This report was generated at 2010 UTC with six discoveries announced today, all of them appearing in the active traffic tables above (here now) and below (approaching): 2017 WD, 2017 WC, 2017 WB, 2017 VA15, 2017 VZ14, and, not least, risk-listed 2017 VT14, which Alan Hale notes on the Comets ML is "traveling in a distinctly cometary orbit," urging observers to watch for cometary activity. Also new, in the table below, is risk-listed 2017 VR12 (MPEC, DOU, DOU), which was announced three days ago and we just noticed is approaching an encounter with Earth next March, by when it will have become a bright target. (Several more objects will come by before then, and will be added soon to this table.)
        Today's DOU MPEC has the recovery of distant 2017 BS5, first follow-up for active objects 2017 VY13, 2017 VN13, and risk-listed 2017 VC14, and continuing follow-up for active 2017 VV12 and 444584 2006 UK, and seven departed objects: 2017 VD, 2017 VC, 171576 1999 VP11, 496817 1989 VB, and including three risk-listed: 2017 VJ, 2017 UP43, and intruder 2017 VL2, plus astrometry from June for 418094 2007 WV4.

Approaching (sorted by 10-LD bubble entry date)
8.04 LD Nov. 222017 VA15 35 m  < 10 LD tomorrow, NEW - MPEC
3.18 LD Nov. 242017 VZ14 36 m  < 10 LD Nov. 19, NEW - MPEC
2.0   LD Nov. 252017 VY13 17 m  < 10 LD Nov. 21, uncertainty +/- 17 mins. - DOU
3.8   LD Dec. 32008 WM61 15 m  < 10 LD Nov. 24, uncertainty +/- 2.985 days, NHATS target
9.71 LD Dec. 142015 XX169 11 m  < 10 LD Dec. 12, NHATS target
3.8   LD Dec. 172017 VT14 111 m  < 10 LD Dec. 13, NEW, uncertainty +/- 22.0667 hours, risk, comet? - MPEC
3.7   LD March 72017 VR12 287 m  < 10 LD Feb. 28, NEW, uncertainty +/- 9.6500 hours, risk - MPEC, DOU, DOU

Reading:  Nature reports that the National Science Foundation has decided to continue funding Arecibo Observatory in Puerto Rico after the damage the radio telescope sustained from Hurricane Maria, but will cut that funding from $8.2 million (about two thirds of the yearly budget) to $2 million, with the remaining support to come from "as-yet-to-be-decided partners." (NASA already kicks in $3.7 million.) Meanwhile, the report notes that, due to the ongoing power crisis on the island "the observatory cannot restart its planetary radar, which tracks and characterizes near-Earth asteroids."



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 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 17 November '17

The MPC's NEO Confirmation Page has 70 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 70 objects listed. Of these, 39 were "one nighters." So far The Tracking News has counted a total of 109 listings on the NEOCP today.

New MPECs  on 17 November '17

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 28 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2017-W46 - "22:42 UT" - 2012 QJ45


MPEC 2017-W45 - "22:40 UT" - 2007 BB50


MPEC 2017-W44 - "22:37 UT" - 2004 TL10


MPEC 2017-W43 - "16:54 UT" - 2017 WE


MPEC 2017-W42 - "16:51 UT" - 2017 WC


MPEC 2017-W41 - "16:47 UT" - 2017 VG15


MPEC 2017-W40 - "16:42 UT" - 2017 VF15


MPEC 2017-W39 - "16:38 UT" - 2017 VE15


MPEC 2017-W38 - "16:26 UT" - 2017 VD15


MPEC 2017-W37 - "16:22 UT" - 2017 VC15


MPEC 2017-W36 - "16:18 UT" - 2017 VB15


MPEC 2017-W35 - "16:14 UT" - 2017 VA15


MPEC 2017-W34 - "16:10 UT" - 2017 VZ14


MPEC 2017-W33 - "16:05 UT" - 2017 VY14


MPEC 2017-W32 - "16:01 UT" - 2017 WD


MPEC 2017-W31 - "15:56 UT" - 2017 VX14


MPEC 2017-W30 - "15:51 UT" - 2017 VT14


MPEC 2017-W29 - "15:47 UT" - 2017 VW14


MPEC 2017-W28 - "15:43 UT" - 2017 VU14


MPEC 2017-W27 - "15:38 UT" - 2017 VV14


MPEC 2017-W26 - "15:34 UT" - 2017 VS14


MPEC 2017-W25 - "15:30 UT" - 2017 VR14


MPEC 2017-W24 - "15:12 UT" - 2017 VQ14


MPEC 2017-W23 - "15:08 UT" - 2017 VP14


MPEC 2017-W22 - "15:03 UT" - 2017 VO14


MPEC 2017-W21 - "14:57 UT" - 2017 VN14


MPEC 2017-W20 - "14:35 UT" - 2017 WB


<< DOU on 17 Nov. '17 >>  MPEC 2017-W19 - "13:05 UT" - Daily Orbit Update

Observers  on 17 November '17

A total of 44 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 18 in MPECs 2017-W19, 2017-W29, 2017-W31, 2017-W33, 2017-W34, 2017-W35, 2017-W36, 2017-W38, 2017-W39, 2017-W42, 2017-W43 & 2017-W46 -- 2017 WE, 2017 WC, 2017 VZ14, 2017 VY14, 2017 VX14, 2017 VW14, 2017 VV1, 2017 VE15, 2017 VD15, 2017 VB15, 2017 VA15, 2017 UD8, 2017 UA8, 2017 SP12, 2017 OP68, 2012 QJ45, 2010 WQ7, 2000 UO30
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2017-W19 -- 411201
T08ATLAS Mauna Loa in Hawaii, 17 in MPEC 2017-W19 -- 1998 WP7, 85839, 68950, 505178, 497096, 496817, 495858, 420302, 415029, 162273, 154991, 152667, 144898, 140158, 8037, 2368, 2212
V03Big Water Obs. in Utah, 3 in MPECs 2017-W34, 2017-W35 & 2017-W36 -- 2017 VZ14, 2017 VB15, 2017 VA15
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2017-W38 -- 2017 VD15
160Castelmartini Obs. in Italy, 11 in MPECs 2017-W19, 2017-W34, 2017-W35 & 2017-W42 -- 2017 WC, 2017 VZ14, 2017 VC14, 2017 VA15, 90075, 68950, 444584, 333888, 142040, 100926, 1980
703Catalina Sky Survey (CSS) in Arizona, 35 in MPECs 2017-W19, 2017-W20, 2017-W35, 2017-W38 & 2017-W42 -- 2017 WC, 2017 WB, 2017 VW13, 2017 VD15, 2017 VA15, 2017 PS30, 2010 SA12, 65679, 53319, 53110, 505169, 497117, 495959, 483560, 448628, 422699, 339492, 338292, 244977, 192563, 17181, 171576, 16657, 15817, 154589, 141670, 138852, 137799, 137199, 11405, 10115, 7336, 5189, 3361, 2202
K51Celado Obs. in Italy, 5 in MPECs 2017-W20, 2017-W31, 2017-W34, 2017-W35 & 2017-W42 -- 2017 WC, 2017 WB, 2017 VZ14, 2017 VX14, 2017 VA15
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 2 in MPEC 2017-W19 -- 2017 GK4, 2017 BS5
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2017-W35 -- 2017 VA15
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 14 in MPECs 2017-W19, 2017-W20, 2017-W27, 2017-W28, 2017-W30, 2017-W32, 2017-W34 & 2017-W45 -- 2017 WD, 2017 WB, 2017 VZ14, 2017 VY13, 2017 VV14, 2017 VU14, 2017 VT14, 2017 VL2, 2017 VJ, 2017 UR51, 2017 UP43, 2017 UE43, 2017 UA45, 2007 BB50
595Farra d'Isonzo Obs. in Italy, 5 in MPECs 2017-W20, 2017-W34, 2017-W35, 2017-W38 & 2017-W42 -- 2017 WC, 2017 WB, 2017 VZ14, 2017 VD15, 2017 VA15
J95Great Shefford Obs. in England, 12 in MPECs 2017-W19, 2017-W20, 2017-W29, 2017-W31, 2017-W33, 2017-W34, 2017-W36, 2017-W38, 2017-W42, 2017-W43 & 2017-W44 -- 2017 WE, 2017 WC, 2017 WB, 2017 VZ14, 2017 VY14, 2017 VX14, 2017 VW14, 2017 VV12, 2017 VD15, 2017 VC14, 2017 VB15, 2004 TL10
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-W19 -- 2017 SO17
246KLENOT in the Czech Republic, 2 in MPECs 2017-W34 & 2017-W35 -- 2017 VZ14, 2017 VA15
K38M57 Obs. in Italy, 1 in MPEC 2017-W19 -- 444584
H01Magdalena Ridge Obs. (MRO) in New Mexico, 11 in MPECs 2017-W27, 2017-W28, 2017-W29, 2017-W31, 2017-W32, 2017-W33, 2017-W35, 2017-W36, 2017-W38, 2017-W40 & 2017-W41 -- 2017 WD, 2017 VY14, 2017 VX14, 2017 VW14, 2017 VV14, 2017 VU14, 2017 VG15, 2017 VF15, 2017 VD15, 2017 VB15, 2017 VA15
W92MASTER OAFA Obs., 3 in MPEC 2017-W19 -- 21374, 2368, 2212
568_Marco Micheli on Mauna Kea in Hawaii, 4 in MPECs 2017-W23, 2017-W24, 2017-W25 & 2017-W26 -- 2017 VS14, 2017 VR14, 2017 VQ14, 2017 VP14
474Mt. John Obs. in New Zealand, 10 in MPECs 2017-W19, 2017-W20, 2017-W38 & 2017-W42 -- 2017 WC, 2017 WB, 2017 VL2, 2017 VD15, 2017 VB13, 2017 UY4, 2017 UR51, 2017 UA45, 2017 ST20, 2016 TE93
G96Mt. Lemmon Survey (MLS) in Arizona, 43 in MPECs 2017-W19, 2017-W22, 2017-W27, 2017-W28, 2017-W29, 2017-W31, 2017-W32, 2017-W33, 2017-W34, 2017-W36, 2017-W37, 2017-W39, 2017-W40, 2017-W41, 2017-W43 & 2017-W44 -- 2017 WE, 2017 WD, 2017 VZ14, 2017 VY14, 2017 VX14, 2017 VW14, 2017 VV14, 2017 VU14, 2017 VO14, 2017 VG15, 2017 VF15, 2017 VE15, 2017 VC15, 2017 VB15, 2016 RN40, 2004 TL10, 88264, 497176, 496018, 495891, 495858, 486692, 418416, 381906, 376729, 351370, 333888, 331510, 30825, 285263, 262623, 220909, 194268, 143404, 142348, 141354, 140158, 136849, 136793, 112221, 9950, 8013, 6178
Z80Northolt Branch Obs. in England, 5 in MPECs 2017-W19 & 2017-W35 -- 2017 VW13, 2017 VM2, 2017 VC, 2017 VA15, 444584
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2017-W19 -- 2017 VD
F51Pan-STARRS 1 (PS1) in Hawaii, 9 in MPECs 2017-W19, 2017-W21, 2017-W22, 2017-W23, 2017-W24, 2017-W25 & 2017-W26 -- 2017 VS14, 2017 VR14, 2017 VQ14, 2017 VP14, 2017 VO14, 2017 VN14, 2016 AZ8, 2003 SJ154, 5189
K63Pascoli Obs. in Italy, 4 in MPECs 2017-W31, 2017-W34, 2017-W35 & 2017-W38 -- 2017 VZ14, 2017 VX14, 2017 VD15, 2017 VA15
A53Peschiera del Garda Obs. in Italy, 4 in MPEC 2017-W19 -- 2017 VM2, 2017 VC, 2017 SO17, 2017 SL2
W98Polonia Obs. in Chile, 1 in MPEC 2017-W19 -- 140158
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 4 in MPEC 2017-W19 -- 2017 BM31, 422699, 418094, 190166
104San Marcello Pistoiese Obs. in Italy, 8 in MPECs 2017-W20, 2017-W31, 2017-W34, 2017-W35, 2017-W36, 2017-W38, 2017-W42 & 2017-W43 -- 2017 WE, 2017 WC, 2017 WB, 2017 VZ14, 2017 VX14, 2017 VD15, 2017 VB15, 2017 VA15
H36Sandlot Obs. in Kansas, 1 in MPEC 2017-W28 -- 2017 VU14
C48Sayn Solar Obs. in Russia, 1 in MPEC 2017-W19 -- 2010 VT11
204Schiaparelli Obs. in Italy, 32 in MPECs 2017-W19, 2017-W27, 2017-W28, 2017-W31, 2017-W33, 2017-W34, 2017-W35, 2017-W36 & 2017-W38 -- 2017 VZ14, 2017 VY14, 2017 VX14, 2017 VV14, 2017 VU14, 2017 VJ, 2017 VD15, 2017 VD, 2017 VB15, 2017 VA15, 2017 UZ4, 2017 UE45, 2017 SO17, 2017 RO2, 2017 RK1, 2017 QT35, 2017 QT17, 2017 QS17, 2017 QR17, 2017 QP17, 2017 QO17, 2017 QM18, 2017 QL18, 2017 QB, 2017 PT25, 2017 PS25, 2017 PL26, 2017 PE, 2017 NL6, 2014 GM1, 503966, 500749
Y28Sertao de Itaparica Obs. in Brazil, 1 in MPEC 2017-W19 -- 2017 UR51
E12Siding Spring Survey in New South Wales, 1 in MPEC 2017-W19 -- 2016 AZ8
Y00SONEAR in Brazil, 2 in MPEC 2017-W19 -- 99907, 1865
587Sormano Obs. in Italy, 7 in MPECs 2017-W19, 2017-W30, 2017-W31, 2017-W34, 2017-W35, 2017-W36 & 2017-W38 -- 2017 VZ14, 2017 VX14, 2017 VT14, 2017 VD15, 2017 VB15, 2017 VA15, 2015 BF4
691Spacewatch 0.9m telescope in Arizona, 5 in MPECs 2017-W19 & 2017-W25 -- 2017 VR14, 2013 UP8, 499490, 226514, 154988
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2017-W19, 2017-W21, 2017-W23, 2017-W24 & 2017-W26 -- 2017 VS14, 2017 VQ14, 2017 VP14, 2017 VN14, 2017 NK, 2015 FO124, 2010 TP55
W34Squirrel Valley Obs. in North Carolina, 3 in MPECs 2017-W19 & 2017-W34 -- 2017 VZ14, 438897, 8037
I93St. Pardon de Conques Obs. in France, 5 in MPECs 2017-W31, 2017-W34, 2017-W35, 2017-W36 & 2017-W38 -- 2017 VZ14, 2017 VX14, 2017 VD15, 2017 VB15, 2017 VA15
I52Steward Obs. Mt. Lemmon Station in Arizona, 29 in MPECs 2017-W19, 2017-W20, 2017-W22, 2017-W25, 2017-W27, 2017-W28, 2017-W29, 2017-W31, 2017-W32, 2017-W33, 2017-W34, 2017-W35, 2017-W36, 2017-W37, 2017-W38, 2017-W39, 2017-W40, 2017-W41, 2017-W42, 2017-W43 & 2017-W44 -- 2017 WE, 2017 WD, 2017 WC, 2017 WB, 2017 VZ14, 2017 VY14, 2017 VX14, 2017 VW14, 2017 VV14, 2017 VV, 2017 VU14, 2017 VR14, 2017 VR12, 2017 VO14, 2017 VK13, 2017 VJ13, 2017 VH13, 2017 VG15, 2017 VF15, 2017 VE15, 2017 VD15, 2017 VD13, 2017 VC15, 2017 VB15, 2017 VB13, 2017 VA15, 2017 SO16, 2017 SE19, 2004 TL10
926Tenagra II Obs. in Arizona, 17 in MPECs 2017-W19, 2017-W20, 2017-W22, 2017-W27, 2017-W29, 2017-W30, 2017-W31, 2017-W32, 2017-W33, 2017-W34, 2017-W35, 2017-W36, 2017-W37, 2017-W38, 2017-W39, 2017-W40 & 2017-W41 -- 2017 WD, 2017 WB, 2017 VZ14, 2017 VY14, 2017 VX14, 2017 VW14, 2017 VV14, 2017 VT14, 2017 VO14, 2017 VN13, 2017 VG15, 2017 VF15, 2017 VE15, 2017 VD15, 2017 VC15, 2017 VB15, 2017 VA15
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-W19 -- 2010 JH87
C51WISE in Earth polar orbit, 1 in MPEC 2017-W30 -- 2017 VT14
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 17 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 VT14JPL Sentry18072024-2116253.1096949e-06-3.44-3.450JPL: Computed at 09:46 today Pacific time based on 18 observations spanning 3.0742 days (2017-Nov-13.76517 to 2017-Nov-16.839382). Diameter approximately 0.110 km. from weighted mean H=22.36.
2017 VF14NEODyS1600208727.83e-09-9.88-9.930NEODyS: "Based on 24 optical observations (of which 1 are rejected as outliers) from 2017-11-15.336 to 2017-11-16.419."
2017 VC14JPL Sentry17002102-211121.75616e-07-8.75-8.760JPL: Computed at 08:37 today Pacific time based on 37 observations spanning 1.7778 days (2017-Nov-15.24643 to 2017-Nov-17.024206). Diameter approximately 0.007 km. from weighted mean H=28.57.
NEODyS16002081-210437.22e-08-9.03-9.30NEODyS: "Based on 30 optical observations (of which 5 are rejected as outliers) from 2017-11-15.247 to 2017-11-16.286."
2017 VW13JPL Sentry17002085-209733.4427e-07-4.57-4.660JPL: Computed at 08:39 today Pacific time based on 80 observations spanning 3.8029 days (2017-Nov-13.64011 to 2017-Nov-17.44297). Diameter approximately 0.260 km. from weighted mean H=20.60.
NEODyS1600209727.89e-07-4.25-4.30NEODyS: "Based on 70 optical observations (of which 2 are rejected as outliers) from 2017-11-13.641 to 2017-11-16.470."
2017 VV12JPL Sentry17002062-2116127.27044e-06-6.91-7.480JPL: Computed at 08:54 today Pacific time based on 74 observations spanning 2.9429 days (2017-Nov-14.20121 to 2017-Nov-17.144138). Diameter approximately 0.009 km. from weighted mean H=28.00.
NEODyS16002062-210891.99e-06-7.52-7.660NEODyS: "Based on 71 optical observations (of which 15 are rejected as outliers) from 2017-11-14.202 to 2017-11-16.008."
2017 VR12JPL Sentry17002029-207022.926e-10-7.02-7.090JPL: Computed at 08:39 today Pacific time based on 35 observations spanning 6.8460 days (2017-Nov-10.58175 to 2017-Nov-17.42775). Diameter approximately 0.280 km. from weighted mean H=20.39.
2017 VN2NEODyS16002099-2116102.01e-06-7.30-7.680NEODyS: "Based on 51 optical observations (of which 17 are rejected as outliers) from 2017-11-12.230 to 2017-11-16.084."
2017 VL2JPL Sentry16302087-2115690.000145420179-4.71-5.210JPL: Computed at 08:06 today Pacific time based on 34 observations spanning 6.6396 days (2017-Nov-10.47521 to 2017-Nov-17.11478). Diameter approximately 0.020 km. from weighted mean H=26.11.
NEODyS16002085-2115511.93e-04-4.58-4.640NEODyS: "Based on 27 optical observations (of which 0 are rejected as outliers) from 2017-11-10.476 to 2017-11-15.538."
2017 VJJPL Sentry16302094-2117391.96201787e-05-4.76-5.060JPL: Computed at 08:05 today Pacific time based on 32 observations spanning 11.498 days (2017-Nov-05.41077 to 2017-Nov-16.908323). Diameter approximately 0.041 km. from weighted mean H=24.61.
2017 UR51JPL Sentry16002037-2099112.06987768e-05-3.37-3.430JPL: Computed at 07:56 today Pacific time based on 33 observations spanning 17.656 days (2017-Oct-30.52142 to 2017-Nov-17.17781). Diameter approximately 0.110 km. from weighted mean H=22.49.
NEODyS16002041-2117256.99e-06-4.00-4.150NEODyS: "Based on 23 optical observations (of which 1 are rejected as outliers) from 2017-10-30.522 to 2017-11-15.551."
2017 UA45JPL Sentry16302078-2115447.9113345e-05-5.00-5.190JPL: Computed at 08:16 today Pacific time based on 29 observations spanning 20.417 days (2017-Oct-27.47452 to 2017-Nov-16.891214). Diameter approximately 0.021 km. from weighted mean H=26.09.
NEODyS16002078-2116618.37e-05-4.96-5.050NEODyS: "Based on 24 optical observations (of which 4 are rejected as outliers) from 2017-10-27.475 to 2017-11-15.500."
2017 UP43JPL Sentry16302110-211657.2405e-06-6.19-6.480JPL: Computed at 08:05 today Pacific time based on 48 observations spanning 18.442 days (2017-Oct-29.48637 to 2017-Nov-16.927928). Diameter approximately 0.018 km. from weighted mean H=26.36.
2017 UE43JPL Sentry16002045-211388.2322e-06-4.79-5.260JPL: Computed at 07:54 today Pacific time based on 27 observations spanning 19.621 days (2017-Oct-28.36401 to 2017-Nov-16.984669). Diameter approximately 0.058 km. from weighted mean H=23.83.
2006 WP1JPL Sentry1600R E M O V E DJPL

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 17 November '17

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

2300Grabbed MPEC 2017-W44 - 2004 TL10 - see above
Grabbed MPEC 2017-W45 - 2007 BB50 - see above
Grabbed MPEC 2017-W46 - 2012 QJ45 - see above
2010Generated Traffic Report
1807Noted that JPL Sentry has posted 2017 VT14 as an impact risk - see above
1700Noted that JPL Sentry has updated its 2017 VC14 risk assessment - see above
Noted that JPL Sentry has updated its 2017 VR12 risk assessment - see above
Noted that JPL Sentry has updated its 2017 VV12 risk assessment - see above
Noted that JPL Sentry has updated its 2017 VW13 risk assessment - see above
Grabbed MPEC 2017-W38 - 2017 VD15 - see above
Grabbed MPEC 2017-W39 - 2017 VE15 - see above
Grabbed MPEC 2017-W40 - 2017 VF15 - see above
Grabbed MPEC 2017-W41 - 2017 VG15 - see above
Grabbed MPEC 2017-W42 - 2017 WC - see above
Grabbed MPEC 2017-W43 - 2017 WE - see above
1630Noted that JPL Sentry has updated its 2017 UA45 risk assessment - see above
Noted that JPL Sentry has updated its 2017 UP43 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 VL2 risk assessment - see above
Grabbed MPEC 2017-W32 - 2017 WD - see above
Grabbed MPEC 2017-W33 - 2017 VY14 - see above
Grabbed MPEC 2017-W34 - 2017 VZ14 - see above
Grabbed MPEC 2017-W35 - 2017 VA15 - see above
Grabbed MPEC 2017-W36 - 2017 VB15 - see above
Grabbed MPEC 2017-W37 - 2017 VC15 - see above
1600Noted that JPL Sentry has removed 2006 WP1 as an impact risk - see above
Noted that NEODyS has updated its 2017 UA45 risk assessment - see above
Noted that JPL Sentry has updated its 2017 UE43 risk assessment - see above
Noted that JPL Sentry has updated its 2017 UR51 risk assessment - see above
Noted that NEODyS has updated its 2017 UR51 risk assessment - see above
Noted that NEODyS has posted 2017 VC14 as an impact risk - see above
Noted that NEODyS has posted 2017 VF14 as an impact risk - see above
Noted that NEODyS has updated its 2017 VL2 risk assessment - see above
Noted that NEODyS has updated its 2017 VN2 risk assessment - see above
Noted that NEODyS has updated its 2017 VV12 risk assessment - see above
Noted that NEODyS has posted 2017 VW13 as an impact risk - see above
Grabbed MPEC 2017-W19 - Daily Orbit Update - see above
Grabbed MPEC 2017-W20 - 2017 WB - see above
Grabbed MPEC 2017-W21 - 2017 VN14 - see above
Grabbed MPEC 2017-W22 - 2017 VO14 - see above
Grabbed MPEC 2017-W23 - 2017 VP14 - see above
Grabbed MPEC 2017-W24 - 2017 VQ14 - see above
Grabbed MPEC 2017-W25 - 2017 VR14 - see above
Grabbed MPEC 2017-W26 - 2017 VS14 - see above
Grabbed MPEC 2017-W27 - 2017 VV14 - see above
Grabbed MPEC 2017-W28 - 2017 VU14 - see above
Grabbed MPEC 2017-W29 - 2017 VW14 - see above
Grabbed MPEC 2017-W30 - 2017 VT14 - see above
Grabbed MPEC 2017-W31 - 2017 VX14 - see above