Contents  on 16 February '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 16 February '17

Five objects reported inside ten LD

Five asteroids are known to be within ten lunar distances (LD) of our planet today. Nearest is inbound radar/NHATS target 2017 BW, which moves in from 4.79 to 4.64 LD. Newly announced NHATS target 2017 CF32 is outbound from 5.77 to 6.58 LD and new discovery 2017 CP32 leaves the ten LD space, passing from 9.07 to 11.32 LD.

Earth passage I D ~Size Distance Today  Notes
2.39 LD Feb. 122017 CP32 57 m  9.07 to 11.32 LD NEW, exits ten LD - MPEC
2.48 LD Feb. 52017 BG30 4 m  7.97 to 8.67 LD NHATS target
2.57 LD Feb. 102017 CF32 21 m  5.77 to 6.58 LD NEW, NHATS target - MPEC
3.58 LD Feb. 242017 CP1 39 m  8.41 from 9.35 LD NHATS target - DOU
4.64 LD tomorrow2017 BW 69 m  4.64 from 4.79 LD radar/NHATS target - DOU

This report was generated at 2023 UTC with the discoveries of 2017 CP32 (MPEC) and 2017 CF32 (MPEC), and with follow-up in today's DOU MPEC for 2017 BW, inbound 2017 CP1, and approaching 2017 BY93.

Approaching (10-LD bubble entry date order)
2.37 LD Feb. 232017 BY93 82 m  < 10 LD Feb. 21, risk - DOU
2.7   LD March 22012 DR32 41 m  < 10 LD Feb. 28, uncertainty +/- 4.1333 hours
8.34 LD March 161998 SL36 309 m  < 10 LD March 14
7.63 LD March 262015 TC25 4 m  < 10 LD March 17, radar/NHATS target, risk
4.57 LD April 192014 JO25 812 m  < 10 LD April 18
8.0   LD May 292017 CS 452 m  < 10 LD May 26, uncertainty +/- 1.6167 hours



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. 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 16 February '17

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, 25 were "one nighters." So far The Tracking News has counted a total of 67 listings on the NEOCP today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object at Suno Observatory by Birtwhistle et al.

New MPECs  on 16 February '17

Minor Planet Electronic Circulars

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


MPEC 2017-D08 - "18:15 UT" - 2017 CM32


MPEC 2017-D07 - "18:12 UT" - 2017 CP32


MPEC 2017-D06 - "18:09 UT" - 2017 CO32


MPEC 2017-D05 - "18:06 UT" - 2017 CN32


MPEC 2017-D04 - "17:59 UT" - 2017 CL32


<< DOU on 16 Feb. '17 >>  MPEC 2017-D03 - "13:03 UT" - Daily Orbit Update


MPEC 2017-D02 - "04:16 UT" - 2017 CF32


MPEC 2017-D01 - "04:07 UT" - 2017 CE32

Observers  on 16 February '17

A total of 51 observers appear in today's MPECs.

CodeObserver / observatory
K82Alphard Obs., 1 in MPEC 2017-D03 -- 2017 BW
705"Kristie Nault via Apache Point Obs. in New Mexico, 1 in MPEC 2017-D05 -- 2017 CN32
E23Arcadia Obs. in New South Wales, 1 in MPEC 2017-D07 -- 2017 CP32
H21Astronomical Research Obs. Westfield in Illinois, 17 in MPECs 2017-D03 & 2017-D04 -- 2017 CL32, 2017 BW, 2016 UU80, 2011 WO41, 54789, 475665, 40267, 153951, 138846, 137925, 11398, 5693, 5653, 5626, 3103, 1627, 1036
T05ATLAS Haleakala in Hawaii, 13 in MPECs 2017-D02, 2017-D03 & 2017-D07 -- 2017 CP32, 2017 CF32, 2003 CR1, 2002 LS32, 90075, 413002, 248083, 153951, 138846, 138155, 4954, 3199, 1036
T08ATLAS Mauna Loa in Hawaii, 6 in MPEC 2017-D03 -- 2011 WO41, 5693, 5653, 5131, 4179, 3103
B75Betelgeuse Station in Italy, 2 in MPECs 2017-D02 & 2017-D03 -- 2017 CF32, 2017 BW
B66Casasco Obs. in Italy, 2 in MPEC 2017-D03 -- 2016 UU80, 443103
160Castelmartini Obs. in Italy, 7 in MPECs 2017-D02 & 2017-D03 -- 2017 CP1, 2017 CF32, 2001 QE34, 54789, 5131, 4179, 3352
703Catalina Sky Survey (CSS) in Arizona, 3 in MPEC 2017-D03 -- 2006 EC1, 265482, 3103
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 9 in MPECs 2017-D03 & 2017-D07 -- 2017 CP32, 2017 BU31, 2017 BL123, 2017 BE29, 2017 AK4, 2017 AH13, 2016 YW7, 2016 WU3, 2016 PO8
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2017-D02 -- 2017 CF32
Z45Cosmos Obs., 3 in MPEC 2017-D03 -- 90075, 5693, 3103
958Dax Obs. in France, 1 in MPEC 2017-D02 -- 2017 CF32
151Eschenberg Obs. in Switzerland, 2 in MPEC 2017-D03 -- 2017 CP1, 2011 WO41
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2017-D02 -- 2017 CF32
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2017-D03 -- 2017 BW
203GiaGa Obs. in Italy, 4 in MPECs 2017-D02 & 2017-D03 -- 2017 CP1, 2017 CF32, 2017 BY93, 2017 BL30
240Herrenberg Obs. in Germany, 2 in MPEC 2017-D03 -- 68346, 438955
H15ISON New Mexico Obs. in New Mexico, 1 in MPEC 2017-D03 -- 10165
Q60ISON Siding Spring Obs. in New South Wales, 1 in MPEC 2017-D03 -- 310842
H06iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2017-D03 -- 2017 BW
Q62|Sergio Foglia in Italy via iTelescope Obs. Siding Spring in New South Wales, 2 in MPECs 2017-D03 & 2017-D07 -- 2017 CP32, 2017 BY93
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 2 in MPECs 2017-D05 & 2017-D06 -- 2017 CO32, 2017 CN32
246KLENOT in the Czech Republic, 20 in MPECs 2017-D02, 2017-D03 & 2017-D07 -- 2017 CP32, 2017 CP1, 2017 CG1, 2017 CF32, 2017 BY93, 2017 BM123, 2017 BL30, 2017 AF5, 2016 YM1, 2016 XD1, 2016 WX9, 2016 UU80, 2016 PR8, 2015 BY310, 2014 AD17, 2013 GL8, 2006 WS1, 2006 OH15, 7088, 4179
W85LCOGT Cerro Tololo A in Chile, 1 in MPEC 2017-D03 -- 2017 BY93
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2017-D08 -- 2017 CM32
V37LCOGT Fort Davis in Texas, 1 in MPEC 2017-D03 -- 2011 EP51
T04LCOGT Haleakala OGG B#2 in Hawaii, 1 in MPEC 2017-D05 -- 2017 CN32
K92LCOGT Sutherland B in South Africa, 2 in MPEC 2017-D03 -- 2011 EP51, 192559
K93LCOGT Sutherland C in South Africa, 2 in MPECs 2017-D03 & 2017-D08 -- 2017 CM32, 2017 BY93
B33Libbiano Obs. in Italy, 1 in MPEC 2017-D03 -- 2011 WO41
K30Luscherz Obs. in Switzerland, 1 in MPEC 2017-D02 -- 2017 CF32
H01Magdalena Ridge Obs. (MRO) in New Mexico, 2 in MPECs 2017-D05 & 2017-D06 -- 2017 CO32, 2017 CN32
K74Muensterschwarzach Obs. in Germany, 2 in MPEC 2017-D03 -- 2017 BW, 2016 UU80
G34Oberfrauendorf Obs. in Germany, 2 in MPECs 2017-D02 & 2017-D03 -- 2017 CF32, 2017 BW
C23Olmen Obs. in Belgium, 1 in MPEC 2017-D03 -- 2017 BW
F51Pan-STARRS 1 (PS1) in Hawaii, 5 in MPECs 2017-D01, 2017-D03, 2017-D04, 2017-D05 & 2017-D06 -- 2017 CO32, 2017 CN32, 2017 CL32, 2017 CJ1, 2017 CE32
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 16 in MPEC 2017-D03 -- 2017 CP1, 2017 BL30, 2016 UU80, 2016 PR8, 2011 WO41, 2005 YS165, 2002 LS32, 2001 QE34, 479325, 443103, 349507, 226198, 152931, 11398, 5653, 433
D29Purple Mtn. Obs. Xuyi Station in China, 4 in MPEC 2017-D03 -- 2013 GL8, 40267, 386298, 203471
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2017-D02 -- 2017 CF32
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2017-D01 & 2017-D02 -- 2017 CF32, 2017 CE32
H36Sandlot Obs. in Kansas, 3 in MPECs 2017-D02, 2017-D03 & 2017-D07 -- 2017 CP32, 2017 CF32, 2017 BL30
204Schiaparelli Obs. in Italy, 1 in MPEC 2017-D02 -- 2017 CF32
Y00SONEAR in Brazil, 1 in MPEC 2017-D03 -- 2017 BW
587Sormano Obs. in Italy, 1 in MPEC 2017-D02 -- 2017 CF32
291Spacewatch 1.8m telescope in Arizona, 7 in MPECs 2017-D03, 2017-D05, 2017-D06 & 2017-D08 -- 2017 CO32, 2017 CN32, 2017 CM32, 2017 BS31, 2017 BK123, 2016 UP41, 2016 SH45
W34Squirrel Valley Obs. in North Carolina, 2 in MPEC 2017-D03 -- 2017 CP1, 385343
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2017-D03 -- 2017 AE13
718Wiggins Obs. in Utah, 1 in MPEC 2017-D02 -- 2017 CF32
C51WISE in Earth polar orbit, 2 in MPECs 2017-D03 & 2017-D08 -- 2017 CM32, 364136
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 16 February '17

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
2017 CM32JPL Sentry2034210633.2e-08-4.90-5.160JPL: "Analysis based on 18 observations spanning 8.5104 days (2017-Feb-07.94124 to 2017-Feb-16.45162)." Diameter approximately 0.430 km. from mean, weighted H=19.5.
2017 BY93NEODyS1844205712.81e-09-7.32-7.320NEODyS #2 for the day: "Based on 67 optical observations (of which 0 are rejected as outliers) from 2017-01-26.500 to 2017-02-16.079."
JPL Sentry1643205714.5e-08-6.12-6.120JPL: "Analysis based on 67 observations spanning 20.579 days (2017-Jan-26.49954 to 2017-Feb-16.078528)." Diameter approximately 0.082 km. from mean, weighted H=23.1.
2017 BL30NEODyS18442029-2116142.5e-04-2.33-2.330NEODyS #2 for the day: "Based on 153 optical observations (of which 0 are rejected as outliers) from 2017-01-28.379 to 2017-02-16.169."
JPL Sentry16432029-205264.8e-05-3.06-3.060JPL: "Analysis based on 153 observations spanning 18.790 days (2017-Jan-28.37792 to 2017-Feb-16.16819)." Diameter approximately 0.073 km. from mean, weighted H=23.3.

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 16 February '17

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

2034Noted that JPL Sentry has posted 2017 CM32 as an impact risk - see above
2023Generated Traffic Report
1844Noted that NEODyS has updated its 2017 BL30 risk assessment - see above
Noted that NEODyS has updated its 2017 BY93 risk assessment - see above
Grabbed MPEC 2017-D05 - 2017 CN32 - see above
Grabbed MPEC 2017-D06 - 2017 CO32 - see above
Grabbed MPEC 2017-D07 - 2017 CP32 - see above
Grabbed MPEC 2017-D08 - 2017 CM32 - see above
1804Grabbed MPEC 2017-D04 - 2017 CL32 - see above
1643Noted that JPL Sentry has updated its 2017 BL30 risk assessment - see above
Noted that NEODyS has updated its 2017 BL30 risk assessment - see above
Noted that JPL Sentry has updated its 2017 BY93 risk assessment - see above
Noted that NEODyS has updated its 2017 BY93 risk assessment - see above
Grabbed MPEC 2017-D03 - Daily Orbit Update - see above
0515Grabbed MPEC 2017-D01 - 2017 CE32 - see above
Grabbed MPEC 2017-D02 - 2017 CF32 - see above