Contents  on 8 October '16

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 8 October '16

Fifteen objects reported inside ten LD

Fifteen asteroids are reported flying within ten lunar distances (LD) of our home world today. Nearest is risk-listed NHATS target 2016 SR2, outbound from 3.87 to 4.33 LD. Further away, 2016 TA11 comes its closest to Earth this time around, reaching 4.99 LD at 2142 UTC, as does NHATS target 2016 TC -- 7.22 LD at 1506 UTC, while 2016 TJ10 enters our ten-LD reporting "bubble," sliding in from 10.37 to 7.64 LD, as does newly announced 2016 TO11, coming in from 10.80 to 8.66 LD, and three objects exit: 2016 TM10 flies off from 8.40 to 11.68 LD, NHATS target 2016 TS2 from 9.23 to 10.31 LD, and risk-listed NHATS target from 9.40 to 10.39 LD.

Earth passage I D ~Size Distance Today  Notes
0.33 LD Oct. 32016 TH 4 m  7.23 to 8.90 LD intruder, NHATS target, risk
2.18 LD Sept. 262016 SX1 7 m  7.23 to 7.80 LD NHATS target
2.21 LD Oct. 62016 TP2 18 m  4.34 to 7.37 LD
2.33 LD Oct. 122016 TO11 13 m  8.66 from 10.80 LD NEW, enters ten LD - MPEC
2.57 LD Sept. 72016 RD34 11 m  8.54 to 8.78 LD NHATS target, risk
3.42 LD Sept. 292016 TM 11 m  9.40 to 10.39 LD exits ten LD, NHATS target, risk - DOU
3.77 LD yesterday2016 SR2 19 m  3.87 to 4.33 LD NHATS target, risk
4.24 LD Oct. 112016 TJ10 29 m  7.63 from 10.35 LD enters ten LD - DOU
4.99 LD today2016 TA11 13 m  4.99 LD NHATS target, Earth closest at 2142
5.21 LD yesterday2016 TX10 25 m  5.22 to 6.34 LD DOU
5.68 LD Oct. 112016 TD11 19 m  7.18 from 8.29 LD
6.78 LD Oct. 62016 TM10 18 m  8.40 to 11.68 LD exits ten LD
6.94 LD Oct. 42016 TS2 18 m  9.23 to 10.31 LD exits ten LD, NHATS target
7.22 LD today2016 TC 22 m  7.22 LD NHATS target, Earth closest at 1506
8.08 LD yesterday2016 TG 28 m  8.20 to 9.35 LD
Approaching
7.3   LD Oct. 162016 TH10 40 m  < 10 LD Oct. 14, uncertainty +/- 1.0000 hours

This report was updated at 2302 UTC with the discovery of already departed 2016 TJ17 (MPEC), which flew past Earth at 1.22 LD on October 4th.
        This report was previously updated at 1948 UTC with new discovery 2016 TO11 (MPEC) and with follow-up in today's DOU MPEC for 2016 TX10, 2016 TJ10, 2016 TM, and five departed objects: 2016 TK10, 2016 TQ2 (risk listed), 2016 TS, 2016 SF1 (Moon buzzer), and 2009 UG.
        Your first local flying rocks traffic report was generated at 0410 UTC.

Comment: We also note the discovery of 2016 TP11 (MPEC), which is currently calculated to have barely skimmed the edge of our ten-LD reporting zone on September 27th. Further observations may show that it actually entered.



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. "Moon buzzer" is used here to describe an object that passed the Moon at less than one Earth-Moon distance but did not intrude into the Earth-Moon system on this passage. 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 8 October '16

The MPC's NEO Confirmation Page has 89 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 89 objects listed. Of these, 45 were "one nighters." So far The Tracking News has counted a total of 115 listings on the NEOCP today.

New MPECs  on 8 October '16

Minor Planet Electronic Circulars

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


MPEC 2016-T83 - "20:20 UT" - 2016 TM17


MPEC 2016-T82 - "20:16 UT" - 2016 TJ17


MPEC 2016-T81 - "20:09 UT" - 2016 TL17


MPEC 2016-T80 - "20:06 UT" - 2016 TK17


MPEC 2016-T79 - "15:10 UT" - 2016 TR11


MPEC 2016-T78 - "15:07 UT" - 2016 TQ11


MPEC 2016-T77 - "14:52 UT" - 2016 TP11


MPEC 2016-T76 - "14:49 UT" - 2016 TO11


MPEC 2016-T75 - "14:45 UT" - 2016 TN11


MPEC 2016-T74 - "14:42 UT" - 2016 TM11


MPEC 2016-T73 - "14:38 UT" - 2016 TL11


MPEC 2016-T72 - "14:06 UT" - 2016 EE156


<< DOU on 8 Oct. '16 >>  MPEC 2016-T71 - "12:03 UT" - Daily Orbit Update

Observers  on 8 October '16

A total of 33 observers appear in today's MPECs.

CodeObserver / observatory
705"Kristie Nault via Apache Point Obs. in New Mexico, 10 in MPEC 2016-T71 -- 2016 TQ2, 2016 TO, 2016 TK10, 2016 SG17, 2016 SF17, 2016 LX48, 2016 HC3, 2014 KD91, 2010 VB1, 2009 VY25
H21Astronomical Research Obs. Westfield in Illinois, 32 in MPECs 2016-T71, 2016-T74, 2016-T75, 2016-T76, 2016-T77, 2016-T79, 2016-T81, 2016-T82 & 2016-T83 -- 2016 TX10, 2016 TV10, 2016 TR11, 2016 TP11, 2016 TO11, 2016 TN11, 2016 TM17, 2016 TM11, 2016 TM, 2016 TL17, 2016 TK, 2016 TJ17, 2016 TJ10, 2016 ST3, 2016 SN2, 2016 SL3, 2016 SH35, 2016 SF2, 2016 SF17, 2016 RZ40, 2016 RY, 2016 RC41, 2016 RA18, 2016 NB39, 2012 US68, 2012 SZ49, 2010 CE55, 2007 DY40, 2005 TF, 2004 TK10, 2003 VG1, 2003 SJ215
T05ATLAS Haleakala in Hawaii, 8 in MPEC 2016-T71 -- 2016 LX48, 2016 HC3, 2010 EH43, 68950, 275611, 162911, 162269, 5143
300Bisei Spaceguard Center in Japan, 2 in MPECs 2016-T77 & 2016-T82 -- 2016 TP11, 2016 TJ17
703Catalina Sky Survey (CSS) in Arizona, 15 in MPECs 2016-T71, 2016-T77 & 2016-T82 -- 2016 TP11, 2016 TJ17, 2016 NF33, 2016 LZ10, 2005 TF, 252793, 252373, 251346, 248083, 16816, 140928, 7088, 5836, 5587, 3352
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 20 in MPEC 2016-T71 -- 2016 TS, 2016 TO2, 2016 TK, 2016 TG10, 2016 ST2, 2016 SS2, 2016 SQ2, 2016 SP2, 2016 SH45, 2016 SF1, 2016 RV, 2016 RU, 2016 RS33, 2016 RN40, 2016 RH40, 2016 QR44, 2016 QD45, 2016 PX38, 2016 PU, 2016 OJ
850Cordell-Lorenz Obs. in Tennessee, 2 in MPECs 2016-T77 & 2016-T82 -- 2016 TP11, 2016 TJ17
958Dax Obs. in France, 2 in MPECs 2016-T77 & 2016-T82 -- 2016 TP11, 2016 TJ17
Q60ISON Siding Spring Obs. in New South Wales, 1 in MPEC 2016-T71 -- 303250
H06#M. Suzuki in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2016-T82 -- 2016 TJ17
Q62`Steven M. Tilley in Louisiana via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2016-T82 -- 2016 TJ17
950.Ovidiu Vaduvescu via La Palma in the Canary Islands, 1 in MPEC 2016-T71 -- 2008 WK
W86LCOGT Cerro Tololo B in Chile, 1 in MPEC 2016-T79 -- 2016 TR11
J136Martin Altman in Germany via the Liverpool Telescope in the Canary Islands, 1 in MPEC 2016-T71 -- 2016 TV10
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2016-T82 -- 2016 TJ17
568_Marco Micheli on Mauna Kea in Hawaii, 4 in MPECs 2016-T79, 2016-T80, 2016-T81 & 2016-T83 -- 2016 TR11, 2016 TM17, 2016 TL17, 2016 TK17
900Moriyama Obs. in Japan, 2 in MPECs 2016-T77 & 2016-T82 -- 2016 TP11, 2016 TJ17
G96Mt. Lemmon Survey (MLS) in Arizona, 15 in MPECs 2016-T71, 2016-T73, 2016-T74, 2016-T75, 2016-T76 & 2016-T78 -- 2016 TQ11, 2016 TO11, 2016 TN11, 2016 TM11, 2016 TL11, 2016 SM2, 2016 GU216, 65674, 35396, 173232, 164206, 162269, 145656, 12923, 9058
227OrbitJet Obs. in New York, 1 in MPEC 2016-T71 -- 68950
I41Palomar Transient Factory in southern California, 1 in MPEC 2016-T71 -- 2016 LZ10
F51Pan-STARRS 1 (PS1) in Hawaii, 26 in MPECs 2016-T71, 2016-T73, 2016-T74, 2016-T79, 2016-T80, 2016-T81 & 2016-T83 -- 2016 TR11, 2016 TM17, 2016 TM11, 2016 TL17, 2016 TL11, 2016 TK17, 2016 TC11, 2016 RD20, 2016 PR, 2016 GB241, 2016 EL158, 2012 RG3, 2012 EZ11, 2011 SS25, 2009 UX19, 2009 SM, 2007 JF22, 2004 TK10, 1999 TW16, 54789, 378610, 374158, 217430, 12538, 103067, 1580
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 12 in MPEC 2016-T71 -- 2016 TL2, 2016 RZ40, 2016 RP33, 2016 LX48, 2016 HC3, 2014 KD91, 2010 EH43, 2009 UG, 2009 TB8, 2005 TF, 2001 UG18, 1999 SO5
A48Povegliano Veronese Obs. in Italy, 2 in MPEC 2016-T71 -- 2016 RP33, 2016 LX48
D29Purple Mtn. Obs. Xuyi Station in China, 10 in MPEC 2016-T71 -- 2016 GD135, 2014 KD91, 2005 UE, 2005 TF, 2005 CL, 96189, 152685, 9058, 5587, 1943
104San Marcello Pistoiese Obs. in Italy, 4 in MPECs 2016-T71, 2016-T74, 2016-T76 & 2016-T82 -- 2016 TO11, 2016 TM11, 2016 TJ17, 467963
H36Sandlot Obs. in Kansas, 2 in MPECs 2016-T78 & 2016-T82 -- 2016 TQ11, 2016 TJ17
G40!M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2016-T71 -- 2016 TP
691Spacewatch 0.9m telescope in Arizona, 5 in MPEC 2016-T71 -- 2016 SG2, 2016 RZ40, 2016 PP26, 2016 LZ10, 20460
291Spacewatch 1.8m telescope in Arizona, 6 in MPECs 2016-T71, 2016-T73, 2016-T76 & 2016-T79 -- 2016 TR11, 2016 TQ2, 2016 TO11, 2016 TL11, 2016 TL, 2016 RB41
V78Spirit Marsh Obs. in Minnesota, 1 in MPEC 2016-T71 -- 3200
I52Steward Obs. Mt. Lemmon Station in Arizona, 4 in MPECs 2016-T74, 2016-T76, 2016-T77 & 2016-T82 -- 2016 TP11, 2016 TO11, 2016 TM11, 2016 TJ17
926Tenagra II Obs. in Arizona, 5 in MPECs 2016-T71, 2016-T72, 2016-T73, 2016-T74 & 2016-T75 -- 2016 TX10, 2016 TN11, 2016 TM11, 2016 TL11, 2016 EE156
C51WISE in Earth polar orbit, 3 in MPEC 2016-T71 -- 2016 CQ195, 2010 TK7, 369264
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 8 October '16

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
2016 TV10JPL Sentry1614R E M O V E DJPL: Risk listing removed at 1502 UTC.
2016 TQ2JPL Sentry16142110-211573.7e-06-6.32-6.600JPL: "Analysis based on 81 observations spanning 4.1632 days (2016-Oct-04.26195 to 2016-Oct-08.4252)." Diameter approximately 0.017 km. from mean, weighted H=26.5.
NEODyS16142110-211583.86e-06-6.31-6.560NEODyS: "Based on 81 optical observations (of which 0 are rejected as outliers) from 2016-10-04.263 to 2016-10-08.426."
2016 TTNEODyS16142074-209681.8e-06-6.42-6.560NEODyS: "Based on 47 optical observations (of which 1 are rejected as outliers) from 2016-10-02.318 to 2016-10-07.452."
2016 TMJPL Sentry16142093-211632.2e-06-7.22-7.280JPL: "Analysis based on 66 observations spanning 5.0068 days (2016-Oct-02.12337 to 2016-Oct-07.13015)." Diameter approximately 0.011 km. from mean, weighted H=27.4.
NEODyS16142093-211632.06e-06-7.24-7.260NEODyS: "Based on 68 optical observations (of which 2 are rejected as outliers) from 2016-10-02.124 to 2016-10-07.131."
2016 SJ35NEODyS16142086-210921.78e-05-4.81-4.820NEODyS: "Based on 36 optical observations (of which 0 are rejected as outliers) from 2016-09-28.536 to 2016-10-06.342."

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 8 October '16

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

2302Updated Traffic Report
2104Grabbed MPEC 2016-T83 - 2016 TM17 - see above
2020Grabbed MPEC 2016-T80 - 2016 TK17 - see above
Grabbed MPEC 2016-T81 - 2016 TL17 - see above
Grabbed MPEC 2016-T82 - 2016 TJ17 - see above
1614Noted that NEODyS has updated its 2016 SJ35 risk assessment - see above
Noted that JPL Sentry has updated its 2016 TM risk assessment - see above
Noted that NEODyS has updated its 2016 TM risk assessment - see above
Noted that JPL Sentry has updated its 2016 TQ2 risk assessment - see above
Noted that NEODyS has updated its 2016 TQ2 risk assessment - see above
Noted that NEODyS has updated its 2016 TT risk assessment - see above
Noted that JPL Sentry has removed 2016 TV10 as an impact risk - see above
Grabbed MPEC 2016-T71 - Daily Orbit Update - see above
Grabbed MPEC 2016-T72 - 2016 EE156 - see above
Grabbed MPEC 2016-T73 - 2016 TL11 - see above
Grabbed MPEC 2016-T74 - 2016 TM11 - see above
Grabbed MPEC 2016-T75 - 2016 TN11 - see above
Grabbed MPEC 2016-T76 - 2016 TO11 - see above
Grabbed MPEC 2016-T77 - 2016 TP11 - see above
Grabbed MPEC 2016-T78 - 2016 TQ11 - see above
Grabbed MPEC 2016-T79 - 2016 TR11 - see above