Contents  on 24 October '17

NOTE:  These A/CC news pages will update less often for a few days. All discoveries and observing credits will be reported, but we may miss some interim impact risk assessments and undercount NEOCP efforts, and there may be some days without a traffic report for Earth's Busy Neighborhood.

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 24 October '17

Report not compiled

(No Traffic Report was compiled for this day. Click on left and right arrows immediately above for yesterday and tomorrow's reports.)

NEOCP Activity  on 24 October '17

The MPC's NEO Confirmation Page has 103 listings

When last checked at 2359 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 103 objects listed. Of these, 44 were "one nighters." So far The Tracking News has counted a total of 109 listings on the NEOCP today.

New MPECs  on 24 October '17

Minor Planet Electronic Circulars

As of last check at 2359 UTC, there have been nine MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


<< DOU on 24 Oct. '17 >>  MPEC 2017-U179 - "12:06 UT" - Daily Orbit Update


MPEC 2017-U178 - "00:33 UT" - 2017 UK3


MPEC 2017-U177 - "00:28 UT" - 2017 UF3


MPEC 2017-U176 - "00:25 UT" - 2017 UJ3


MPEC 2017-U175 - "00:20 UT" - 2017 UH3


MPEC 2017-U174 - "00:17 UT" - 2017 UG3


MPEC 2017-U173 - "00:13 UT" - 2017 UE3


MPEC 2017-U172 - "00:10 UT" - 2017 UD3


MPEC 2017-U171 - "00:06 UT" - 2017 UC3

Observers  on 24 October '17

A total of 37 observers appear in today's MPECs.

CodeObserver / observatory
C97Al-Fulaij Obs., 6 in MPEC 2017-U179 -- 2014 YC15, 96631, 90075, 265962, 142040, 1980
E23Arcadia Obs. in New South Wales, 1 in MPEC 2017-U176 -- 2017 UJ3
H21Astronomical Research Obs. Westfield in Illinois, 30 in MPECs 2017-U172, 2017-U173 & 2017-U179 -- 2017 UE3, 2017 UD3, 2017 TX3, 2017 TW3, 2017 TV4, 2017 TS3, 2017 TS1, 2017 TR4, 2017 TR1, 2017 TQ4, 2017 TN4, 2017 TN2, 2017 TM2, 2017 TL4, 2017 TG4, 2017 SY20, 2017 SS19, 2017 SQ12, 2017 SO16, 2017 SL2, 2017 SL17, 2017 SH2, 2017 SE2, 2017 RX15, 2017 RR15, 2017 RL16, 2017 PN26, 2017 OH68, 2017 JU2, 2002 FD6
T05ATLAS Haleakala in Hawaii, 9 in MPEC 2017-U179 -- 2017 MV2, 2017 FJ90, 2015 KN120, 2012 SQ56, 66146, 16657, 162694, 15817, 154589
T08ATLAS Mauna Loa in Hawaii, 16 in MPECs 2017-U171, 2017-U176 & 2017-U179 -- 2017 UJ3, 2017 UC3, 2008 MH1, 2008 AX28, 2003 UV11, 99907, 496817, 495858, 435302, 420302, 333888, 159399, 143404, 11500, 2212, 1865
C77Bernezzo Obs. in Italy, 1 in MPEC 2017-U173 -- 2017 UE3
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2017-U173 -- 2017 UE3
160Castelmartini Obs. in Italy, 5 in MPECs 2017-U173, 2017-U178 & 2017-U179 -- 2017 UK3, 2017 UE3, 457768, 338292, 142040
703Catalina Sky Survey (CSS) in Arizona, 42 in MPECs 2017-U176, 2017-U178 & 2017-U179 -- 2017 US, 2017 UK3, 2017 UJ3, 2017 TL4, 2017 SY20, 2017 SO17, 2017 QT35, 2017 QL35, 2017 MV2, 2015 UM67, 2015 KN120, 2013 UM9, 2011 EB7, 2007 VO243, 96744, 90075, 85709, 65679, 55408, 498548, 496818, 441825, 416584, 411201, 408792, 253586, 242211, 220839, 21374, 190166, 185853, 17181, 162694, 162566, 15817, 143624, 11405, 10115, 8035, 7336, 5189, 2201
107Cavezzo Obs. in Italy, 1 in MPEC 2017-U173 -- 2017 UE3
309&Marco Micheli via Cerro Paranal in Chile, 2 in MPEC 2017-U179 -- 2017 SF20, 2017 RH16
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 27 in MPEC 2017-U179 -- 2017 UQ1, 2017 UD1, 2017 TZ3, 2017 TX3, 2017 TV4, 2017 TR3, 2017 TQ3, 2017 SX20, 2017 SQ21, 2017 SO21, 2017 SN17, 2017 SL14, 2017 SG14, 2017 RL15, 2017 RE16, 2017 RC15, 2017 QX34, 2017 QR17, 2017 QH18, 2017 QE18, 2017 OX18, 2017 MW7, 2017 MW2, 2017 MU7, 2017 KN4, 2017 HW1, 2017 GQ6
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2017-U179 -- 2017 TE2
J27El Guijo Obs. in Spain, 5 in MPEC 2017-U179 -- 2014 YC15, 2014 UR116, 500749, 496005, 1865
734Farpoint Obs. in Kansas, 1 in MPEC 2017-U172 -- 2017 UD3
G48Harlingten Research Obs. in New Mexico, 1 in MPEC 2017-U179 -- 2014 UR116
246KLENOT in the Czech Republic, 1 in MPEC 2017-U171 -- 2017 UC3
046Klet Obs. in the Czech Republic, 19 in MPEC 2017-U179 -- 2017 TR1, 2017 TJ4, 96744, 96631, 90075, 85709, 68950, 65679, 497176, 496818, 457768, 411201, 265962, 190166, 162998, 142464, 142040, 11500, 1865
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2017-U172, 2017-U175, 2017-U176, 2017-U177 & 2017-U178 -- 2017 UK3, 2017 UJ3, 2017 UH3, 2017 UF3, 2017 UD3
G96Mt. Lemmon Survey (MLS) in Arizona, 42 in MPECs 2017-U172, 2017-U173, 2017-U174, 2017-U175, 2017-U177 & 2017-U179 -- 2017 UH3, 2017 UG3, 2017 UF3, 2017 UE3, 2017 UD3, 2017 UA1, 2017 TQ6, 2017 TG6, 2017 TE2, 2017 TB5, 2017 SY20, 2017 SS17, 2017 SL2, 2017 PA27, 2017 OR18, 2017 MO7, 2015 XR128, 2015 VR1, 2013 RE21, 2006 KA40, 2005 UM5, 2003 UV11, 1998 WZ1, 87311, 499307, 496837, 496018, 420210, 351370, 338176, 30825, 285263, 265962, 262623, 20429, 159399, 152667, 143404, 141851, 112221, 8567, 8201
608NEAT's USAF Haleakala telescope in Hawaii, 1 in MPEC 2017-U179 -- 2005 RB
Z80Northolt Branch Obs. in England, 1 in MPEC 2017-U179 -- 2017 RR15
F51Pan-STARRS 1 (PS1) in Hawaii, 7 in MPECs 2017-U178 & 2017-U179 -- 2017 UK3, 96631, 456651, 162998, 162215, 143624, 2201
K63Pascoli Obs. in Italy, 3 in MPECs 2017-U172, 2017-U173 & 2017-U178 -- 2017 UK3, 2017 UE3, 2017 UD3
B49Paus Obs. in Spain, 1 in MPEC 2017-U173 -- 2017 UE3
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 11 in MPEC 2017-U179 -- 2017 SS19, 2017 SN14, 2017 RR15, 2012 WL4, 1998 WP7, 90075, 68950, 500749, 338292, 142040, 11500
D29Purple Mtn. Obs. Xuyi Station in China, 2 in MPEC 2017-U179 -- 374038, 7336
W25RMS Obs., 1 in MPEC 2017-U171 -- 2017 UC3
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2017-U171 & 2017-U179 -- 2017 UC3, 2007 DM41
691Spacewatch 0.9m telescope in Arizona, 6 in MPEC 2017-U179 -- 2017 UA1, 2017 TO5, 2017 QL33, 2017 PA27, 2017 OR18, 2011 QH21
291Spacewatch 1.8m telescope in Arizona, 5 in MPEC 2017-U179 -- 2017 SL14, 2017 RL16, 2012 OC1, 2010 GP67, 2007 TQ24
V78Spirit Marsh Obs. in Minnesota, 1 in MPEC 2017-U179 -- 171576
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2017-U179 -- 333888
I52Steward Obs. Mt. Lemmon Station in Arizona, 12 in MPECs 2017-U172, 2017-U173, 2017-U174, 2017-U175, 2017-U176, 2017-U177, 2017-U178 & 2017-U179 -- 2017 UR1, 2017 UK3, 2017 UJ3, 2017 UJ1, 2017 UH3, 2017 UG3, 2017 UF3, 2017 UE3, 2017 UD3, 2017 TQ5, 2017 TO5, 2017 TM6
926Tenagra II Obs. in Arizona, 9 in MPECs 2017-U171, 2017-U172, 2017-U173, 2017-U174, 2017-U175, 2017-U177 & 2017-U179 -- 2017 UU2, 2017 UQ2, 2017 UH3, 2017 UG3, 2017 UF3, 2017 UE3, 2017 UD3, 2017 UC3, 2017 TQ4
T14UH/Tholen NEO Follow-Up CFH Telescope in Hawaii, 1 in MPEC 2017-U179 -- 2017 RN2
C51WISE in Earth polar orbit, 2 in MPEC 2017-U179 -- 2017 TV4, 438017
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 24 October '17

Summary Risk Table for Risk Assessments Updated Today   (last checks: NEODyS at 2359 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 UK3JPL Sentry09112115-211536.2911e-06-6.51-6.710JPL: Computed at 19:51 Oct. 23rd Pacific time based on 27 observations spanning 1.4357 days (2017-Oct-22.38109 to 2017-Oct-23.81681). Diameter approximately 0.012 km. from weighted mean H=27.22.
2017 UJ2NEODyS20542079-211271.03e-06-9.27-9.610NEODyS: "Based on 27 optical observations (of which 3 are rejected as outliers) from 2017-10-21.361 to 2017-10-22.435."
2017 USJPL Sentry20542070-2117230.000489993-4.17-4.590JPL: Computed at 08:58 today Pacific time based on 82 observations spanning 6.9486 days (2017-Oct-16.34512 to 2017-Oct-23.29377). Diameter approximately 0.022 km. from weighted mean H=25.93.
2017 SF20JPL Sentry20542034-203413.164e-04-4.68-4.680JPL: Computed at 07:54 today Pacific time based on 29 observations spanning 17.884 days (2017-Sep-28.36701 to 2017-Oct-16.25147). Diameter approximately 0.007 km. from weighted mean H=28.35.
2017 RH16JPL Sentry20542026-2117490.0008543665357-2.59-2.590JPL: Computed at 08:34 today Pacific time based on 15 observations spanning 34.709 days (2017-Sep-13.33537 to 2017-Oct-18.044463). Diameter approximately 0.026 km. from weighted mean H=25.61.

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 24 October '17

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

2054Noted that JPL Sentry has updated its 2017 RH16 risk assessment - see above
Noted that JPL Sentry has updated its 2017 SF20 risk assessment - see above
Noted that NEODyS has updated its 2017 UJ2 risk assessment - see above
Noted that JPL Sentry has updated its 2017 US risk assessment - see above
Grabbed MPEC 2017-U179 - Daily Orbit Update - see above
0911Noted that JPL Sentry has posted 2017 UK3 as an impact risk - see above
0100Grabbed MPEC 2017-U177 - 2017 UF3 - see above
Grabbed MPEC 2017-U178 - 2017 UK3 - see above
0027Grabbed MPEC 2017-U171 - 2017 UC3 - see above
Grabbed MPEC 2017-U172 - 2017 UD3 - see above
Grabbed MPEC 2017-U173 - 2017 UE3 - see above
Grabbed MPEC 2017-U174 - 2017 UG3 - see above
Grabbed MPEC 2017-U175 - 2017 UH3 - see above
Grabbed MPEC 2017-U176 - 2017 UJ3 - see above