Contents  on 27 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 27 October '17

Report not compiled

(No Traffic Report compiled for this day. Click on the right arrow immediately above for tomorrow's report. The previous report was on October 25th.)

NEOCP Activity  on 27 October '17

The MPC's NEO Confirmation Page has 105 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 105 objects listed. Of these, 53 were "one nighters." So far The Tracking News has counted a total of 114 listings on the NEOCP today.

New MPECs  on 27 October '17

Minor Planet Electronic Circulars

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


MPEC 2017-U234 - "20:23 UT" - A/2017 U1


<< DOU on 27 Oct. '17 >>  MPEC 2017-U233 - "12:06 UT" - Daily Orbit Update


MPEC 2017-U232 - "11:43 UT" - 2015 TO237


MPEC 2017-U231 - "01:04 UT" - 2017 UA6


MPEC 2017-U230 - "01:00 UT" - 2017 UX5


MPEC 2017-U229 - "00:49 UT" - 2017 UW5


MPEC 2017-U228 - "00:45 UT" - 2017 UK6


MPEC 2017-U227 - "00:41 UT" - 2017 UJ6


MPEC 2017-U226 - "00:37 UT" - 2017 UH6


MPEC 2017-U225 - "00:33 UT" - 2017 UG6


MPEC 2017-U224 - "00:29 UT" - 2017 UF6


MPEC 2017-U223 - "00:24 UT" - 2017 UE6


MPEC 2017-U222 - "00:20 UT" - 2017 UD6


MPEC 2017-U221 - "00:16 UT" - 2017 UC6


MPEC 2017-U220 - "00:11 UT" - 2017 UB6

Observers  on 27 October '17

A total of 32 observers appear in today's MPECs.

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 14 in MPECs 2017-U222, 2017-U225, 2017-U226, 2017-U227, 2017-U228, 2017-U231 & 2017-U233 -- 2017 UK6, 2017 UJ6, 2017 UH6, 2017 UG6, 2017 UD6, 2017 UA6, 2017 TR3, 2017 TP4, 2017 SQ21, 2017 RX15, 2017 RM15, 2017 QW32, 2017 PN26, 2017 MN7
Z84Calar Alto Schmidt in Spain, 3 in MPECs 2017-U225, 2017-U226 & 2017-U231 -- 2017 UH6, 2017 UG6, 2017 UA6
160Castelmartini Obs. in Italy, 16 in MPECs 2017-U225, 2017-U231 & 2017-U233 -- 2017 US, 2017 UG6, 2017 UA6, 2017 QQ32, 2003 UV11, 96590, 87311, 85628, 496817, 496816, 495858, 337228, 162011, 159399, 137062, 2368
703Catalina Sky Survey (CSS) in Arizona, 39 in MPEC 2017-U233 -- 2017 US, 2017 SO17, 2017 QT35, 2017 MV2, 2015 UM67, 2015 KN120, 2013 UM9, 2011 EB7, 2010 SA12, 2003 UV11, 96744, 90075, 85709, 65679, 53319, 53110, 499998, 496818, 416584, 411201, 408792, 253586, 242211, 220839, 21374, 190166, 185853, 171576, 162694, 15817, 143624, 142464, 141670, 11405, 10115, 8035, 7336, 5189, 3361
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 12 in MPECs 2017-U222, 2017-U229, 2017-U233 & 2017-U234 -- 2017 UW5, 2017 UT, 2017 US, 2017 UQ, 2017 UD6, 2017 UA1, 2017 U1, 2017 TW4, 2017 TT6, 2017 TK6, 2017 CW1, 2000 WK107
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 17 in MPEC 2017-U233 -- 2017 UB1, 2017 TH4, 2017 TG5, 2017 TG1, 2017 TF1, 2017 SW20, 2017 ST11, 2017 SP12, 2017 SN17, 2017 QS35, 2017 OS18, 2017 OF7, 2017 MY2, 2017 MC5, 2017 KE5, 2017 HW48, 2017 BL92
G58Chabot Obs. in northern California, 2 in MPECs 2017-U225 & 2017-U227 -- 2017 UJ6, 2017 UG6
J27El Guijo Obs. in Spain, 3 in MPEC 2017-U233 -- 2014 YC15, 2014 UR116, 496005
006Fabra Obs. in Spain, 1 in MPEC 2017-U233 -- 2003 UV11
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-U233 -- 17511
P93JAXA Space Tracking & Communications Center (JAXA STCC) in Japan, 3 in MPECs 2017-U228, 2017-U231 & 2017-U233 -- 2017 UK6, 2017 UA6, 2003 UV11
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2017-U233 -- 376879
K93LCO Sutherland C in South Africa, 1 in MPEC 2017-U234 -- 2017 U1
130Lumezzane Obs. in Italy, 13 in MPEC 2017-U233 -- 2017 TR1, 2017 SN14, 2017 SL2, 2017 RR15, 2017 PJ26, 2017 OQ68, 2010 SA12, 2006 KA40, 498548, 497176, 333888, 265962, 244977
H01Magdalena Ridge Obs. (MRO) in New Mexico, 10 in MPECs 2017-U220, 2017-U221, 2017-U222, 2017-U223, 2017-U224, 2017-U225, 2017-U226, 2017-U227, 2017-U230 & 2017-U231 -- 2017 UX5, 2017 UJ6, 2017 UH6, 2017 UG6, 2017 UF6, 2017 UE6, 2017 UD6, 2017 UC6, 2017 UB6, 2017 UA6
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2017-U233 -- 159399
B67Mirasteilas Obs. in Switzerland, 2 in MPEC 2017-U233 -- 2017 UO, 2014 YC15
900Moriyama Obs. in Japan, 1 in MPEC 2017-U228 -- 2017 UK6
G96Mt. Lemmon Survey (MLS) in Arizona, 46 in MPECs 2017-U220, 2017-U221, 2017-U222, 2017-U223, 2017-U224, 2017-U225, 2017-U226, 2017-U227, 2017-U228, 2017-U229, 2017-U230, 2017-U231 & 2017-U233 -- 2017 UX5, 2017 UW5, 2017 US, 2017 UK6, 2017 UJ6, 2017 UJ3, 2017 UH6, 2017 UG6, 2017 UF6, 2017 UE6, 2017 UD6, 2017 UC6, 2017 UB6, 2017 UB5, 2017 UA6, 2017 UA5, 2017 TZ3, 2017 TX3, 2017 SP12, 2017 SO17, 2017 SL17, 2017 SK17, 2017 PC27, 2017 JU2, 2012 UU136, 2010 SA12, 2005 UJ159, 96536, 55408, 52768, 496818, 416584, 408792, 407653, 378124, 355770, 333480, 253586, 190166, 17181, 142464, 141670, 137799, 8035, 5189, 3288
J43Oukaimeden Obs. in Morocco, 3 in MPEC 2017-U233 -- 503293, 495511, 1865
I61Ourense Obs. in Spain, 1 in MPEC 2017-U233 -- 2003 UV11
F51Pan-STARRS 1 in Hawaii, 1 in MPEC 2017-U233 -- 455956
K63Pascoli Obs. in Italy, 4 in MPECs 2017-U225, 2017-U227, 2017-U228 & 2017-U231 -- 2017 UK6, 2017 UJ6, 2017 UG6, 2017 UA6
Z38Picoto Obs., 1 in MPEC 2017-U233 -- 496018
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 3 in MPECs 2017-U225 & 2017-U233 -- 2017 US4, 2017 UR4, 2017 UG6
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2017-U225, 2017-U226, 2017-U227 & 2017-U228 -- 2017 UK6, 2017 UJ6, 2017 UH6, 2017 UG6
691Spacewatch 0.9m telescope in Arizona, 18 in MPECs 2017-U223, 2017-U225 & 2017-U233 -- 2017 UQ, 2017 UG6, 2017 UE6, 2017 TZ3, 2017 TX3, 2017 TW3, 2017 TS1, 2017 TR1, 2017 TN6, 2017 SP12, 2017 SL14, 2017 SK17, 2017 RH15, 2017 PB27, 2016 TE93, 2013 UM9, 2008 ET7, 2006 VW2
291Spacewatch 1.8m telescope in Arizona, 10 in MPECs 2017-U233 & 2017-U234 -- 2017 UR4, 2017 U1, 2017 TR3, 2017 TJ4, 2017 SV20, 2017 SN17, 2017 OR18, 2017 GN4, 2017 BW, 2016 VO1
I52Steward Obs. Mt. Lemmon Station in Arizona, 17 in MPECs 2017-U220, 2017-U221, 2017-U222, 2017-U223, 2017-U224, 2017-U225, 2017-U226, 2017-U227, 2017-U228, 2017-U229, 2017-U230, 2017-U231 & 2017-U233 -- 2017 UX5, 2017 UW5, 2017 UT2, 2017 UK6, 2017 UJ6, 2017 UH6, 2017 UG6, 2017 UF6, 2017 UE6, 2017 UD6, 2017 UC6, 2017 UC, 2017 UB6, 2017 UA6, 2017 TK6, 2017 SV20, 5189
926Tenagra II Obs. in Arizona, 15 in MPECs 2017-U220, 2017-U221, 2017-U222, 2017-U223, 2017-U224, 2017-U225, 2017-U227, 2017-U228, 2017-U229, 2017-U230, 2017-U231, 2017-U232, 2017-U233 & 2017-U234 -- 2017 UX5, 2017 UW5, 2017 UM5, 2017 UK6, 2017 UJ6, 2017 UH, 2017 UG6, 2017 UF6, 2017 UE6, 2017 UD6, 2017 UC6, 2017 UB6, 2017 UA6, 2017 U1, 2015 TO237
W33Transit Dreams Obs., 1 in MPEC 2017-U233 -- 154589
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-U233 -- 2017 ET2
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 27 October '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 UW5NEODyS16242081-211145.05e-07-8.16-8.250NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2017-10-23.329 to 2017-10-26.325."
JPL Sentry03562081-211121.2378e-06-7.84-8.130JPL: Computed at 19:50 Oct. 26th Pacific time based on 18 observations spanning 2.9967 days (2017-Oct-23.32777 to 2017-Oct-26.32449). Diameter approximately 0.006 km. from weighted mean H=28.69.
2017 UL5NEODyS16242100-211148.7e-07-7.11-7.570NEODyS: "Based on 30 optical observations (of which 4 are rejected as outliers) from 2017-10-22.463 to 2017-10-26.416."
2017 UR4JPL Sentry1624R E M O V E DJPL: Risk listing removed at 1532 UTC today
2017 USJPL Sentry16242070-2117160.000511700713-4.18-4.560JPL: Computed at 08:20 today Pacific time based on 98 observations spanning 10.773 days (2017-Oct-16.34512 to 2017-Oct-27.11841). Diameter approximately 0.022 km. from weighted mean H=25.98.

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 27 October '17

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

2138Grabbed MPEC 2017-U234 - A/2017 U1 - see above
1624Noted that NEODyS has posted 2017 UL5 as an impact risk - see above
Noted that JPL Sentry has removed 2017 UR4 as an impact risk - see above
Noted that JPL Sentry has updated its 2017 US risk assessment - see above
Noted that NEODyS has posted 2017 UW5 as an impact risk - see above
Grabbed MPEC 2017-U232 - 2015 TO237 - see above
Grabbed MPEC 2017-U233 - Daily Orbit Update - see above
0356Noted that JPL Sentry has posted 2017 UW5 as an impact risk - see above
Grabbed MPEC 2017-U222 - 2017 UD6 - see above
Grabbed MPEC 2017-U223 - 2017 UE6 - see above
Grabbed MPEC 2017-U224 - 2017 UF6 - see above
Grabbed MPEC 2017-U225 - 2017 UG6 - see above
Grabbed MPEC 2017-U226 - 2017 UH6 - see above
Grabbed MPEC 2017-U227 - 2017 UJ6 - see above
Grabbed MPEC 2017-U228 - 2017 UK6 - see above
Grabbed MPEC 2017-U229 - 2017 UW5 - see above
Grabbed MPEC 2017-U230 - 2017 UX5 - see above
Grabbed MPEC 2017-U231 - 2017 UA6 - see above
0017Grabbed MPEC 2017-U220 - 2017 UB6 - see above
Grabbed MPEC 2017-U221 - 2017 UC6 - see above