Contents  on 25 January '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 25 January '17

One object reported inside ten LD

One visitor is reported inside ten lunar distances (LD) of Earth today. NHATS target intruder 2017 BX is passing through the Earth-Moon system, coming in from 0.77 LD, swinging by Earth at 0.69 LD at 0453 UTC, and ending the day at a distance of 1.48 LD from us after coming within 0.81 LD of the Moon at 1954 UTC.

Earth passage I D ~Size Distance Today  Notes
0.69 LD today2017 BX 9 m  0.69 LD NHATS target, intruder today, Earth closest at 0453 UTC, Moon closest 0.81 LD at 1954 UTC - DOU
Approaching
4.6   LD Feb. 172017 BW 72 m  < 10 LD Feb. 9, uncertainty +/- 49 mins., NHATS target - DOU
7.10 LD Feb. 52013 FK 78 m  < 10 LD Feb. 2
9.1   LD Feb. 42005 VL1 13 m  < 10 LD Feb. 1, uncertainty +/- 15.0000 hours, NHATS target, risk

This report was generated at 1922 UTC with follow-up in today's DOU MPEC for 2017 BX and approaching NHATS target 2017 BW plus astrometry, from last November, for radar target 2016 UY56, and, from April 2014, for risk-listed 2014 FX32.



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 25 January '17

The MPC's NEO Confirmation Page has 28 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 28 objects listed. Of these, nineteen were "one nighters." So far The Tracking News has counted a total of 39 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 25 January '17

Minor Planet Electronic Circulars

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


MPEC 2017-B64 - "15:38 UT" - 2016 YN13 = 2000 EC14


MPEC 2017-B63 - "15:09 UT" - 2016 YN13


<< DOU on 25 Jan. '17 >>  MPEC 2017-B62 - "13:02 UT" - Daily Orbit Update


MPEC 2017-B61 - "11:53 UT" - 2017 BP3


MPEC 2017-B60 - "11:50 UT" - 2017 BO3


MPEC 2017-B59 - "11:47 UT" - 2017 BN3


MPEC 2017-B58 - "04:09 UT" - 2001 BX15


MPEC 2017-B57 - "03:45 UT" - 2006 DX


MPEC 2017-B56 - "02:27 UT" - 2014 DH23

Observers  on 25 January '17

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

CodeObserver / observatory
H21Astronomical Research Obs. Westfield in Illinois, 1 in MPEC 2017-B58 -- 2001 BX15
T05ATLAS Haleakala in Hawaii, 18 in MPEC 2017-B62 -- 2017 AO13, 2017 AF5, 2011 WO41, 96590, 85990, 85804, 481904, 452389, 438955, 34613, 265482, 22753, 13651, 5693, 4179, 3200, 1862, 1627
300Bisei Spaceguard Center in Japan, 1 in MPEC 2017-B60 -- 2017 BO3
160Castelmartini Obs. in Italy, 7 in MPEC 2017-B62 -- 2005 TF, 380160, 378610, 370307, 265482, 248083, 154244
107Cavezzo Obs. in Italy, 2 in MPEC 2017-B62 -- 5693, 4179
309&Marco Micheli via Cerro Paranal in Chile, 1 in MPEC 2017-B62 -- 2014 FX32
B92Chinon Obs. in France, 1 in MPEC 2017-B62 -- 5693
Z99Clixby Obs. in England, 1 in MPEC 2017-B58 -- 2001 BX15
850Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2017-B60 -- 2017 BO3
958Dax Obs. in France, 3 in MPECs 2017-B57, 2017-B58 & 2017-B60 -- 2017 BO3, 2006 DX, 2001 BX15
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 11 in MPECs 2017-B56, 2017-B57, 2017-B59 & 2017-B62 -- 2017 BN3, 2017 BL3, 2017 AM4, 2017 AK3, 2017 AD5, 2016 YZ, 2016 YR8, 2016 YQ8, 2016 VZ18, 2014 DH23, 2006 DX
595Farra d'Isonzo Obs. in Italy, 1 in MPEC 2017-B58 -- 2001 BX15
K88GINOP-KHK in Hungary, 5 in MPECs 2017-B57, 2017-B58, 2017-B60, 2017-B61 & 2017-B62 -- 2017 BW, 2017 BP3, 2017 BO3, 2006 DX, 2001 BX15
J95Great Shefford Obs. in England, 2 in MPECs 2017-B58 & 2017-B62 -- 2017 BX, 2001 BX15
W85LCOGT Cerro Tololo A in Chile, 2 in MPECs 2017-B61 & 2017-B62 -- 2017 BP3, 2008 CE5
W86LCOGT Cerro Tololo B in Chile, 2 in MPECs 2017-B59 & 2017-B62 -- 2017 BN3, 192559
W87LCOGT Cerro Tololo C in Chile, 1 in MPEC 2017-B62 -- 265482
Q63LCOGT Siding Spring A in New South Wales, 1 in MPEC 2017-B62 -- 192559
K91LCOGT Sutherland A in South Africa, 1 in MPEC 2017-B60 -- 2017 BO3
K93LCOGT Sutherland C in South Africa, 1 in MPEC 2017-B62 -- 192559
K38M57 Obs. in Italy, 2 in MPECs 2017-B58 & 2017-B62 -- 2001 BX15, 252558
Z22MASTER IAC Obs. in the Canary Islands, 2 in MPEC 2017-B62 -- 452389, 4055
Z80Northolt Branch Obs. in England, 3 in MPEC 2017-B62 -- 2017 AF5, 2016 UU80, 2016 PR8
F51Pan-STARRS 1 (PS1) in Hawaii, 3 in MPECs 2017-B59 & 2017-B62 -- 2017 BN3, 433953, 1221
K63Pascoli Obs. in Italy, 2 in MPECs 2017-B60 & 2017-B62 -- 2017 BO3, 2005 TF
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPECs 2017-B57 & 2017-B62 -- 2014 DH23, 2006 DX
104San Marcello Pistoiese Obs. in Italy, 5 in MPECs 2017-B57, 2017-B58, 2017-B60, 2017-B61 & 2017-B62 -- 2017 BP3, 2017 BO3, 2014 DH23, 2006 DX, 2001 BX15
H36Sandlot Obs. in Kansas, 1 in MPEC 2017-B58 -- 2001 BX15
204Schiaparelli Obs. in Italy, 3 in MPECs 2017-B58, 2017-B60 & 2017-B61 -- 2017 BP3, 2017 BO3, 2001 BX15
Q11Shinshiro Obs., 1 in MPEC 2017-B62 -- 433
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2017-B62 -- 96744
G45Space Surveillance Telescope Atom Site (SST Atom Site) in New Mexico, 4 in MPECs 2017-B57, 2017-B58, 2017-B60 & 2017-B61 -- 2017 BP3, 2017 BO3, 2006 DX, 2001 BX15
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2017-B62 -- 4179
I93St. Pardon de Conques Obs. in France, 4 in MPECs 2017-B57, 2017-B58, 2017-B60 & 2017-B61 -- 2017 BP3, 2017 BO3, 2006 DX, 2001 BX15
926Tenagra II Obs. in Arizona, 4 in MPECs 2017-B56 & 2017-B62 -- 2017 BX, 2016 SM3, 2016 NF, 2014 DH23
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 7 in MPECs 2017-B62 & 2017-B63 -- 2017 AP20, 2017 AK3, 2016 YZ, 2016 YN13, 2016 YF11, 2016 UY56, 2016 SD
C51WISE in Earth polar orbit, 1 in MPEC 2017-B63 -- 2016 YN13
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 25 January '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 BL3JPL Sentry16222060-21141143.2e-06-3.04-3.610JPL: "Analysis based on 43 observations spanning 3.3826 days (2017-Jan-21.65427 to 2017-Jan-25.036887)." Diameter approximately 0.302 km. from mean, weighted H=20.2.
2017 AE21NEODyS16222023-2107521.14e-07-7.11-7.820NEODyS: "Based on 5 optical observations (of which 0 are rejected as outliers) from 2017-01-03.526 to 2017-01-04.564."
2017 AB21NEODyS16222019-2116618.86e-09-5.72-6.310NEODyS: "Based on 7 optical observations (of which 0 are rejected as outliers) from 2017-01-03.471 to 2017-01-04.445."
2017 AA21NEODyS16222020-2116731.02e-06-5.92-6.190NEODyS: "Based on 7 optical observations (of which 0 are rejected as outliers) from 2017-01-03.461 to 2017-01-04.441."
2017 AT20NEODyS16222028-2117222.34e-06-6.34-6.530NEODyS: "Based on 6 optical observations (of which 0 are rejected as outliers) from 2017-01-03.373 to 2017-01-04.416."
2017 AD5NEODyS1622R E M O V E D-
2017 AK3JPL Sentry1934208115.1e-08-7.28-7.280JPL #2 for the day: "Analysis based on 28 observations spanning 22.612 days (2017-Jan-02.46805 to 2017-Jan-25.080489)." Diameter approximately 0.040 km. from mean, weighted H=24.6.
NEODyS17042081-208236.57e-08-7.17-7.190NEODyS: "Based on 29 optical observations (of which 0 are rejected as outliers) from 2017-01-02.469 to 2017-01-25.081."
2014 FX32NEODyS17042076-211533.36e-06-5.69-5.690NEODyS: "Based on 68 optical observations (of which 0 are rejected as outliers) from 2014-03-14.566 to 2014-05-28.165."
JPL Sentry16222076-210833.1e-06-5.71-5.710JPL: "Analysis based on 68 observations spanning 74.599 days (2014-Mar-14.565659 to 2014-May-28.164672)." Diameter approximately 0.033 km. from mean, weighted H=25.1.

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 25 January '17

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

1934Noted that JPL Sentry has updated its 2017 AK3 risk assessment - see above
1922Generated Traffic Report
1704Noted that NEODyS has updated its 2014 FX32 risk assessment - see above
Noted that NEODyS has updated its 2017 AK3 risk assessment - see above
1622Noted that JPL Sentry has updated its 2014 FX32 risk assessment - see above
Noted that NEODyS has posted 2017 AA21 as an impact risk - see above
Noted that NEODyS has posted 2017 AB21 as an impact risk - see above
Noted that NEODyS has removed 2017 AD5 as an impact risk - see above
Noted that NEODyS has posted 2017 AE21 as an impact risk - see above
Noted that JPL Sentry has updated its 2017 AK3 risk assessment - see above
Noted that NEODyS has posted 2017 AT20 as an impact risk - see above
Noted that JPL Sentry has updated its 2017 BL3 risk assessment - see above
Grabbed MPEC 2017-B59 - 2017 BN3 - see above
Grabbed MPEC 2017-B60 - 2017 BO3 - see above
Grabbed MPEC 2017-B61 - 2017 BP3 - see above
Grabbed MPEC 2017-B62 - Daily Orbit Update - see above
Grabbed MPEC 2017-B63 - 2016 YN13 - see above
Grabbed MPEC 2017-B64 - 2016 YN13 = 2000 EC14 - see above
0440Grabbed MPEC 2017-B58 - 2001 BX15 - see above
0350Grabbed MPEC 2017-B56 - 2014 DH23 - see above
Grabbed MPEC 2017-B57 - 2006 DX - see above