Contents  on 1 October '19

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 1 October '19

Eighteen objects reported inside ten LD

There are Eighteen visitors reported to be less than ten lunar distances (LD) from Earth today. Three are inside our planet's sphere of gravitational influence (SOI). Nearest is newly announced risk-listed intruder 2019 SM8, which moves in from 1.88 LD to pass us at 0.41 LD and goes out to 1.40 LD. 2019 SD8, enters the SOI, flying in from 3.03 to 1.41 LD, while 2019 SN3 exits the SOI, slipping off from 2.37 to 3.40 LD.

Neighborhood Traffic - sorted by Earth passage distance, grouped by 1.0, 2.41, 5.0 & 10.0 LD boundaries
Earth passage I D ~Size Distance today  Inside ten LD Notes
0.41 LD today 2019 SM8 5 m  0.41 LD Sept. 28 - Oct. 4 NEW, intruder today, Earth closest at 1355 UTC,
Moon closest 0.85 LD at 1813 UTC, risk - MPEC
0.97 LD Oct. 3 2019 SP3 18 m  2.64 from 4.48 LD Sept. 28 - Oct. 8 intruder, risk
1.0   LD Sept. 28* 2019 SX8 6 m  5.1 to 6.9 LD Sept. 22 - Oct. 3 NEW, EPU +/- 8 mins.*, intruder, risk - MPEC
1.39 LD tomorrow 2019 SD8 11 m  1.41 from 3.03 LD Sept. 28 - Oct. 6 enters Earth SOI
2.20 LD Sept. 30 2019 SN3 16 m  2.37 to 3.40 LD Sept. 24 - Oct. 6 exits Earth SOI
2.36 LD Sept. 24 2019 SU3 13 m  4.59 to 5.10 LD Sept. 6 - Oct. 10 NHATS target, risk - DOU
2.5   LD Sept. 27* 2019 SB9 8 m  7.9 to 10.1 LD Sept. 23 - today NEW, EPU +/- 8 mins.*, exits ten LD - MPEC
2.82 LD today 2019 SE8 14 m  2.82 LD Sept. 29 - Oct. 3 Earth closest at 1510 UTC, risk
3.13 LD Sept. 30 2019 SH3 26 m  4.31 to 6.89 LD Sept. 27 - Oct. 3 DOU
4.22 LD Sept. 26 2017 KP27 23 m  6.09 to 6.89 LD Sept. 18 - Oct. 5 NHATS target
4.5   LD Oct. 3* 2019 SH9 9 m  6.3 from 9.0 LD Sept. 30 - Oct. 5 NEW, EPU +/- 43 mins.* - MPEC
5.65 LD Sept. 29 2019 SE5 15 m  6.18 to 6.93 LD Sept. 23 - Oct. 4 DOU
6.52 LD Sept. 29 2019 SN4 45 m  8.11 to 11.29 LD Sept. 28 - today exits ten LD
6.61 LD Sept. 30 2019 SP 44 m  6.67 to 7.87 LD Sept. 28 - tomorrow DOU
7.8   LD today* 2019 SJ9 12 m  7.8 LD Sept. 28 - Oct. 4 NEW, EPU +/- 11 mins.*, Earth closest at 1219
UTC - MPEC
7.87 LD Oct. 3 2019 SL8 23 m  8.53 from 10.08 LD today - Oct. 5 NEW, enters ten LD - MPEC
8.45 LD Sept. 20 2019 RP2 5 m  9.36 to 9.53 LD Sept. 7 - Oct. 4 NHATS target
8.63 LD tomorrow 2019 SX3 29 m  8.64 from 8.97 LD Sept. 29 - Oct. 4 DOU
Approaching Traffic - sorted by 10-LD bubble entry date
7.7   LD Oct. 8* 2019 SB6 16 m  13.8 from 15.3 LD Oct. 4 - 12 EPU +/- 10.32 hours*, NHATS target
1.4   LD Oct. 9* 2019 SL7 20 m  29.4 from 33.3 LD Oct. 7 - 12 EPU +/- 37 mins.*, risk - DOU
*EPU = Earth passage uncertainty

This report was updated at 2317 UTC with four more discoveries: inbound 2019 SH9 (MPEC), passing 2019 SJ9 (MPEC), including two already departed -- 2019 SG9 (MPEC), which came to 9.54 LD on 25 September 25th, and risk-listed 2019 SK9 (MPEC), which passed us at about 3.1 LD* on September 25th (approach uncertainty +/- 14.23 hours.)
        Your first local minor planet traffic report was generated at 2000 UTC with seven discoveries: passing risk-listed intruder 2019 SM8 (MPEC), outbound risk-listed intruder 2019 SX8 (MPEC), which went by us just inside one LD on September 28th, inbound 2019 SL8 (MPEC), outbound 2019 SB9 (MPEC), and three already departed objects: 2019 SA9 (MPEC), which went by at 9.1 LD* on September 25th (uncertainty +/- 1.73 hours), 2019 ST8 (MPEC), at 7.30 LD on September 27th, and, on the same day, 2019 SO8 (MPEC) at 7.67 LD. Today's DOU MPEC has follow-up for seven objects in the above active traffic table, for five departed objects: 2019 SU6, 2019 SW5, 2019 SK1, and risk-listed 2019 SD and 2019 RT3, and for distant 2019 SY6, plus additional observation from January 2018 of risk-listed 2018 BX5, adding 1.94 days to its previous 2.88-day observing arc.



Notes: Ten times the distance to the Moon (ten LD) has no astronomical importance but is a useful boundary for reporting about transient natural objects that approach our planet's 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. "Distant" is used here to describe an object under observation that has come within ten LD since A/CC began this traffic reporting (2007) but is not now so close. Object temporal distances are derived by A/CC from JPL Horizons data. "LD*" indicates some uncertainty in object passage time and distance. See also current sky chart and object details (alt-details), ephemerides, and today's timeline.

NEOCP Activity  on 1 October '19

The MPC's NEO Confirmation Page has 86 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 86 objects listed. Of these, 46 were "one nighters." So far The Tracking News has counted a total of 127 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 1 October '19

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 26 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2019-T26 - "21:18 UT" - 2019 SK9


MPEC 2019-T25 - "21:09 UT" - 2019 SJ9


MPEC 2019-T24 - "21:06 UT" - 2019 SH9


MPEC 2019-T23 - "21:00 UT" - 2019 SG9


MPEC 2019-T22 - "20:56 UT" - 2019 SF9


MPEC 2019-T21 - "20:36 UT" - 2019 SE9


MPEC 2019-T20 - "19:05 UT" - 2019 SC9


MPEC 2019-T19 - "16:47 UT" - 2019 SB9


MPEC 2019-T18 - "16:34 UT" - 2019 SA9


MPEC 2019-T17 - "16:19 UT" - 2019 SZ8


MPEC 2019-T16 - "16:12 UT" - 2019 SY8


MPEC 2019-T15 - "14:01 UT" - 2019 SX8


MPEC 2019-T14 - "13:57 UT" - 2019 SW8


MPEC 2019-T13 - "13:53 UT" - 2019 SV8


MPEC 2019-T12 - "13:50 UT" - 2019 SU8


MPEC 2019-T11 - "13:46 UT" - 2019 ST8


<< DOU on 1 October '19 >>  MPEC 2019-T10 - "12:16 UT" - Daily Orbit Update


MPEC 2019-T09 - "11:50 UT" - 2019 SS8


MPEC 2019-T08 - "11:48 UT" - 2019 SR8


MPEC 2019-T07 - "05:08 UT" - 2019 SQ8


MPEC 2019-T06 - "05:05 UT" - 2019 SP8


MPEC 2019-T05 - "03:54 UT" - 2019 SO8


MPEC 2019-T04 - "00:48 UT" - 2019 SM8


MPEC 2019-T03 - "00:45 UT" - 2019 SL8


MPEC 2019-T02 - "00:41 UT" - 2019 SK8


MPEC 2019-T01 - "00:38 UT" - 2019 SJ8

Observers  on 1 October '19

A total of 42 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2019-T11 & 2019-T20 -- 2019 ST8, 2019 SC9
H21Astronomical Research Obs. Westfield in Illinois, 23 in MPECs 2019-T06, 2019-T07, 2019-T09, 2019-T10, 2019-T11, 2019-T12, 2019-T14, 2019-T15, 2019-T16, 2019-T17, 2019-T18, 2019-T21, 2019-T22 & 2019-T23 -- 2019 SZ8, 2019 SY8, 2019 SX8, 2019 SW8, 2019 SU8, 2019 ST8, 2019 SS8, 2019 SR1, 2019 SQ8, 2019 SP8, 2019 SP, 2019 SG9, 2019 SF9, 2019 SE9, 2019 SD3, 2019 SC1, 2019 SA9, 2016 WX9, 2015 FT344, 2014 SN143, 2011 VR5, 2004 EO20, 139211
T05ATLAS Haleakala in Hawaii, 73 in MPECs 2019-T10 & 2019-T22 -- 2019 SX3, 2019 SF9, 2019 LW1, 2016 PX66, 2015 RZ35, 2014 XX7, 2013 CK89, 2012 CK2, 2011 SG16, 2010 VW75, 2010 UH7, 2009 QB36, 2008 YR27, 2008 SR1, 2006 DY, 2004 FF29, 2002 SQ, 2001 QC34, 96536, 90403, 85839, 85709, 66146, 530743, 524603, 503960, 494880, 492143, 481985, 467475, 458745, 455432, 442243, 424089, 411201, 410778, 373428, 36236, 340666, 339714, 326742, 318411, 25330, 237805, 228502, 223456, 18172, 163760, 162273, 162162, 162082, 153842, 153814, 152942, 143527, 142555, 141593, 140333, 136993, 11885, 108906, 105140, 9400, 6455, 6047, 5786, 5626, 5189, 4183, 3200, 2100, 2059, 1620
T08ATLAS Mauna Loa in Hawaii, 42 in MPECs 2019-T10 & 2019-T20 -- 2019 SC9, 2019 LW1, 2015 VL142, 2014 XX7, 2013 CK89, 2010 UH7, 2008 YR27, 2004 FF29, 96536, 503960, 492143, 481985, 481394, 467317, 442243, 36236, 340666, 326777, 326742, 326291, 318411, 309203, 306462, 25330, 252793, 248926, 243025, 237805, 18172, 162273, 162082, 153842, 142555, 141593, 136993, 112221, 9202, 6455, 5131, 4183, 3200, 2100
C77Bernezzo Obs. in Italy, 1 in MPEC 2019-T22 -- 2019 SF9
703Catalina Sky Survey (CSS) in Arizona, 33 in MPECs 2019-T10, 2019-T11, 2019-T20 & 2019-T23 -- 2019 ST8, 2019 SG9, 2019 SC9, 2017 MN8, 2015 VL142, 2014 XX7, 2010 VW75, 2010 UH7, 2009 QB36, 2001 QC34, 96536, 89830, 85839, 54071, 530743, 503960, 492143, 481985, 459200, 442243, 424089, 373428, 339714, 306462, 252373, 20826, 18882, 18172, 154278, 141593, 140333, 6455, 4183
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 3 in MPECs 2019-T09, 2019-T10 & 2019-T17 -- 2019 SZ8, 2019 SS8, 2006 WF129
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 3 in MPECs 2019-T02, 2019-T08 & 2019-T10 -- 2019 SR8, 2019 SK8, 2019 KE3
850Cordell-Lorenz Obs. in Tennessee, 4 in MPECs 2019-T11, 2019-T20, 2019-T21 & 2019-T23 -- 2019 ST8, 2019 SG9, 2019 SE9, 2019 SC9
958Dax Obs. in France, 2 in MPECs 2019-T04 & 2019-T11 -- 2019 ST8, 2019 SM8
W84%program code "%" (14) via DECam in Chile, 1 in MPEC 2019-T10 -- 2018 BX5
595Farra d'Isonzo Obs. in Italy, 4 in MPECs 2019-T10, 2019-T21, 2019-T22 & 2019-T23 -- 2019 SG9, 2019 SF9, 2019 SE9, 2019 SC8
C73Galati Obs. in Romania, 2 in MPEC 2019-T10 -- 2019 SX3, 2019 SV4
203GiaGa Obs. in Italy, 3 in MPECs 2019-T04, 2019-T22 & 2019-T23 -- 2019 SM8, 2019 SG9, 2019 SF9
K88GINOP-KHK in Hungary, 5 in MPECs 2019-T03, 2019-T04, 2019-T11, 2019-T22 & 2019-T23 -- 2019 ST8, 2019 SM8, 2019 SL8, 2019 SG9, 2019 SF9
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2019-T01, 2019-T04, 2019-T06, 2019-T12 & 2019-T18 -- 2019 SU8, 2019 SP8, 2019 SM8, 2019 SJ8, 2019 SA9
711McDonald Obs. in Texas, 2 in MPECs 2019-T12 & 2019-T21 -- 2019 SU8, 2019 SE9
U70MPC code U70, 1 in MPEC 2019-T10 -- 1620
G96Mt. Lemmon Survey (MLS) in Arizona, 49 in MPECs 2019-T01, 2019-T03, 2019-T04, 2019-T05, 2019-T06, 2019-T09, 2019-T10, 2019-T12, 2019-T13, 2019-T14, 2019-T15, 2019-T17, 2019-T18, 2019-T19, 2019-T21, 2019-T23, 2019-T24, 2019-T25 & 2019-T26 -- 2019 SZ8, 2019 SX8, 2019 SW8, 2019 SV8, 2019 SU8, 2019 SU6, 2019 SS8, 2019 SP8, 2019 SO8, 2019 SM8, 2019 SL8, 2019 SK9, 2019 SJ9, 2019 SJ8, 2019 SH9, 2019 SG9, 2019 SE9, 2019 SB9, 2019 SA9, 2019 RA2, 2019 PG3, 2018 TO2, 2018 PK21, 2017 MN8, 2015 VR1, 2015 GF27, 2012 VN7, 2010 VW75, 2010 CH55, 2009 QB36, 2008 TC4, 2002 VP69, 2001 QC34, 96536, 52768, 503960, 503871, 481985, 471956, 459200, 425047, 378124, 363505, 340048, 308043, 255501, 248926, 171839, 162004
K74Muensterschwarzach Obs. in Germany, 2 in MPECs 2019-T10 & 2019-T11 -- 2019 ST8, 248926
Z80Northolt Branch Obs. in England, 3 in MPEC 2019-T10 -- 2019 SU3, 2019 SH3, 140333
F51Pan-STARRS 1 (PS1) in Hawaii, 29 in MPECs 2019-T02, 2019-T03, 2019-T05, 2019-T07, 2019-T08, 2019-T09, 2019-T10, 2019-T14, 2019-T16, 2019-T20, 2019-T21 & 2019-T23 -- 2019 SY8, 2019 SW8, 2019 SS8, 2019 SR8, 2019 SQ8, 2019 SO8, 2019 SL8, 2019 SK8, 2019 SG9, 2019 SE9, 2019 SC9, 2015 CU58, 2011 SB16, 2006 RH7, 2001 SX269, 68548, 525477, 524603, 482798, 470975, 425047, 416224, 414772, 385497, 309203, 152685, 10145, 6047, 2212
K63Pascoli Obs. in Italy, 8 in MPECs 2019-T01, 2019-T03, 2019-T04, 2019-T11, 2019-T20, 2019-T21, 2019-T22 & 2019-T23 -- 2019 ST8, 2019 SM8, 2019 SL8, 2019 SJ8, 2019 SG9, 2019 SF9, 2019 SE9, 2019 SC9
K19PASTIS Obs. in France, 1 in MPEC 2019-T22 -- 2019 SF9
586Pic du Midi Obs. in France, 2 in MPECs 2019-T11 & 2019-T22 -- 2019 ST8, 2019 SF9
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 3 in MPECs 2019-T10, 2019-T21 & 2019-T22 -- 2019 SF9, 2019 SE9, 2007 TQ24
L04ROASTERR-1 in Romania, 1 in MPEC 2019-T21 -- 2019 SE9
K61Rokycany Obs. in the Czech Republic, 5 in MPECs 2019-T10, 2019-T11, 2019-T21, 2019-T22 & 2019-T23 -- 2019 ST8, 2019 SH8, 2019 SG9, 2019 SF9, 2019 SE9
104San Marcello Pistoiese Obs. in Italy, 2 in MPECs 2019-T22 & 2019-T23 -- 2019 SG9, 2019 SF9
C95SATINO-1 in France, 2 in MPECs 2019-T10 & 2019-T22 -- 2019 SF9, 2019 RT3
204Schiaparelli Obs. in Italy, 1 in MPEC 2019-T11 -- 2019 ST8
033Schwarzschild Obs. in Germany, 1 in MPEC 2019-T22 -- 2019 SF9
587Sormano Obs. in Italy, 4 in MPECs 2019-T01, 2019-T04, 2019-T21 & 2019-T22 -- 2019 SM8, 2019 SJ8, 2019 SF9, 2019 SE9
691Spacewatch 0.9m telescope in Arizona, 14 in MPECs 2019-T10, 2019-T12 & 2019-T16 -- 2019 SY8, 2019 SU8, 2019 SL4, 2019 SE3, 2019 NC1, 2019 GD3, 2019 FV2, 2015 OL35, 2015 HB10, 2014 XX7, 2014 PF68, 2010 TX168, 2006 SE6, 106589
291Spacewatch 1.8m telescope in Arizona, 11 in MPECs 2019-T08, 2019-T10 & 2019-T13 -- 2019 SV8, 2019 SR8, 2019 SP1, 2019 SL7, 2019 SK1, 2019 SD, 2019 OQ2, 2019 LX4, 2018 EB, 2014 MC55, 2005 WD
W34Squirrel Valley Obs. in North Carolina, 2 in MPECs 2019-T21 & 2019-T22 -- 2019 SF9, 2019 SE9
I93St. Pardon de Conques Obs. in France, 10 in MPECs 2019-T01, 2019-T03, 2019-T04, 2019-T05, 2019-T10, 2019-T11, 2019-T20, 2019-T21, 2019-T22 & 2019-T23 -- 2019 ST8, 2019 SO8, 2019 SM8, 2019 SL8, 2019 SJ8, 2019 SG9, 2019 SF9, 2019 SE9, 2019 SC9, 2019 SC8
I52Steward Obs. Mt. Lemmon Station in Arizona, 41 in MPECs 2019-T01, 2019-T03, 2019-T04, 2019-T05, 2019-T06, 2019-T07, 2019-T10, 2019-T11, 2019-T12, 2019-T13, 2019-T14, 2019-T15, 2019-T18, 2019-T19, 2019-T20, 2019-T21, 2019-T22, 2019-T23, 2019-T24, 2019-T25 & 2019-T26 -- 2019 SY6, 2019 SX8, 2019 SX3, 2019 SW8, 2019 SW5, 2019 SV8, 2019 SU8, 2019 SU6, 2019 SU3, 2019 ST8, 2019 ST2, 2019 SQ8, 2019 SQ6, 2019 SP8, 2019 SO8, 2019 SM8, 2019 SM4, 2019 SL8, 2019 SK9, 2019 SK4, 2019 SJ9, 2019 SJ8, 2019 SH9, 2019 SG9, 2019 SG4, 2019 SF9, 2019 SE9, 2019 SE5, 2019 SC9, 2019 SB9, 2019 SA9, 2019 RH1, 2019 RE3, 2019 QX, 2019 QK6, 2019 QC1, 2019 PE2, 2019 OP2, 2019 OA5, 2019 GT3, 2017 AN19
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2019-T10 -- 2019 SU2
L01Visnjan Obs., 4 in MPECs 2019-T01, 2019-T06, 2019-T07 & 2019-T14 -- 2019 SW8, 2019 SQ8, 2019 SP8, 2019 SJ8
C51WISE in Earth polar orbit, 2 in MPEC 2019-T10 -- 2014 PF68, 380160
I41Zwicky Transient Facility (ZTF) in southern California, 2 in MPEC 2019-T10 -- 89830, 340666
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 October '19

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 and NEODyS listings is 100 years, and both post impact solutions beyond that for some 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
2019 SK9JPL Sentry22312034-2119282.628547e-06-6.46-6.940JPL: Computed at 15:30 today Pacific time based on 10 observations spanning 1.0527 days (2019-Sep-30.29928 to 2019-Oct-01.35202). Diameter approximately 0.012 km. from weighted mean H=27.21.
2019 SX8JPL Sentry16002110-211669.0264e-07-8.25-8.690JPL: Computed at 07:59 today Pacific time based on 16 observations spanning .96556 days (2019-Sep-30.34802 to 2019-Oct-01.31358). Diameter approximately 0.006 km. from weighted mean H=28.81.
2019 SQ8JPL Sentry16002032-2118333.857997e-07-5.38-6.100JPL: Computed at 23:32 Sept. 30th Pacific time based on 14 observations spanning 1.7459 days (2019-Sep-29.42055 to 2019-Oct-01.16648). Diameter approximately 0.080 km. from weighted mean H=23.13.
NEODyS16002032-2117364.04e-07-5.32-5.730NEODyS: "Based on 14 optical observations (of which 0 are rejected as outliers) from 2019-09-29.421 to 2019-10-01.167."
2019 SM8NEODyS16002058-206132.75e-06-7.44-7.480NEODyS: "Based on 34 optical observations (of which 0 are rejected as outliers) from 2019-09-30.236 to 2019-09-30.999."
JPL Sentry04092058-206121.5822e-06-7.67-7.700JPL: Computed at 19:02 Sept. 30th Pacific time based on 34 observations spanning .76356 days (2019-Sep-30.23527 to 2019-Sep-30.99883). Diameter approximately 0.005 km. from weighted mean H=29.19.
2019 SE8NEODyS16002075-210868.75e-07-6.77-7.080NEODyS: "Based on 22 optical observations (of which 0 are rejected as outliers) from 2019-09-30.218 to 2019-09-30.830."
2019 SL7JPL Sentry16002049-206531.7340257e-06-5.99-6.000JPL: Computed at 07:50 today Pacific time based on 15 observations spanning 4.9781 days (2019-Sep-26.43402 to 2019-Oct-01.41207). Diameter approximately 0.019 km. from weighted mean H=26.22.
NEODyS16002049-208941.22e-06-6.16-6.180NEODyS: "Based on 15 optical observations (of which 0 are rejected as outliers) from 2019-09-26.435 to 2019-10-01.413."
2019 SL4JPL Sentry1600R E M O V E DJPL: Risk listing removed at 1433 UTC today
NEODyS1600R E M O V E D-
2019 SU3JPL Sentry16002078-2119440.00324819161-3.85-3.930JPL: Computed at 07:40 today Pacific time based on 69 observations spanning 8.1347 days (2019-Sep-23.249638 to 2019-Oct-01.38436). Diameter approximately 0.013 km. from weighted mean H=27.03.
NEODyS16002084-21181722.79e-03-3.90-3.930NEODyS: "Based on 70 optical observations (of which 1 are rejected as outliers) from 2019-09-23.250 to 2019-10-01.385."
2019 SP3JPL Sentry23352046-204615.374e-05-4.70-4.700JPL: Computed at 16:28 today Pacific time based on 24 observations spanning 8.8111 days (2019-Sep-22.2851 to 2019-Oct-01.09619). Diameter approximately 0.019 km. from weighted mean H=26.30.
2019 SU2JPL Sentry16002095-209622.4707e-07-9.24-9.370JPL: Computed at 07:30 today Pacific time based on 16 observations spanning 4.1296 days (2019-Sep-22.37234 to 2019-Sep-26.501941). Diameter approximately 0.003 km. from weighted mean H=30.05.
NEODyS16002069-210462.66e-07-9.24-9.430NEODyS: "Based on 16 optical observations (of which 0 are rejected as outliers) from 2019-09-22.373 to 2019-09-26.503."
2019 SDJPL Sentry16002080-208011.127e-04-4.31-4.310JPL: Computed at 07:31 today Pacific time based on 113 observations spanning 14.229 days (2019-Sep-17.240317 to 2019-Oct-01.46964). Diameter approximately 0.028 km. from weighted mean H=25.44.
NEODyS1600208014.08e-05-4.76-4.760NEODyS: "Based on 113 optical observations (of which 1 are rejected as outliers) from 2019-09-17.241 to 2019-10-01.470."
2019 RT3JPL Sentry16002075-2117198.10933573e-05-4.36-4.440JPL: Computed at 07:33 today Pacific time based on 97 observations spanning 17.493 days (2019-Sep-11.603747 to 2019-Sep-29.096948). Diameter approximately 0.032 km. from weighted mean H=25.13.
NEODyS16002075-2118451.57e-04-4.08-4.150NEODyS: "Based on 97 optical observations (of which 0 are rejected as outliers) from 2019-09-11.605 to 2019-09-29.098."
2018 BX5JPL Sentry16002090-2118102.0132045e-06-7.95-8.360JPL: Computed at 07:38 today Pacific time based on 30 observations spanning 4.8152 days (2018-Jan-22.47374 to 2018-Jan-27.28892). Diameter approximately 0.005 km. from weighted mean H=28.97.
NEODyS16002084-2117261.74e-06-8.02-8.610NEODyS: "Based on 30 optical observations (of which 0 are rejected as outliers) from 2018-01-22.475 to 2018-01-27.290."
2010 VR139NEODyS16002021-2109774.76e-08-8.03-9.140NEODyS: "Based on 7 optical observations (of which 0 are rejected as outliers) from 2010-11-14.338 to 2010-11-14.402."
2007 DJ48JPL Sentry2130R E M O V E DJPL: Risk listing removed at 2106 UTC today. Specified object removed as 2012B G96.

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 1 October '19

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

2335Noted that JPL Sentry has updated its 2019 SP3 risk assessment - see above
2317Updated Traffic Report
2231Noted that JPL Sentry has posted 2019 SK9 as an impact risk - see above
2130Noted that JPL Sentry has removed 2007 DJ48 as an impact risk - see above
Grabbed MPEC 2019-T23 - 2019 SG9 - see above
Grabbed MPEC 2019-T24 - 2019 SH9 - see above
Grabbed MPEC 2019-T25 - 2019 SJ9 - see above
Grabbed MPEC 2019-T26 - 2019 SK9 - see above
2100Grabbed MPEC 2019-T21 - 2019 SE9 - see above
Grabbed MPEC 2019-T22 - 2019 SF9 - see above
1950Grabbed MPEC 2019-T20 - 2019 SC9 - see above
1700Grabbed MPEC 2019-T18 - 2019 SA9 - see above
Grabbed MPEC 2019-T19 - 2019 SB9 - see above
1630Grabbed MPEC 2019-T16 - 2019 SY8 - see above
Grabbed MPEC 2019-T17 - 2019 SZ8 - see above
1600Noted that NEODyS has updated its 2010 VR139 risk assessment - see above
Noted that JPL Sentry has updated its 2018 BX5 risk assessment - see above
Noted that NEODyS has updated its 2018 BX5 risk assessment - see above
Noted that JPL Sentry has updated its 2019 RT3 risk assessment - see above
Noted that NEODyS has updated its 2019 RT3 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SD risk assessment - see above
Noted that NEODyS has updated its 2019 SD risk assessment - see above
Noted that NEODyS has posted 2019 SE8 as an impact risk - see above
Noted that JPL Sentry has removed 2019 SL4 as an impact risk - see above
Noted that NEODyS has removed 2019 SL4 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 SL7 risk assessment - see above
Noted that NEODyS has updated its 2019 SL7 risk assessment - see above
Noted that NEODyS has posted 2019 SM8 as an impact risk - see above
Noted that JPL Sentry has posted 2019 SQ8 as an impact risk - see above
Noted that NEODyS has posted 2019 SQ8 as an impact risk - see above
Noted that JPL Sentry has updated its 2019 SU2 risk assessment - see above
Noted that NEODyS has updated its 2019 SU2 risk assessment - see above
Noted that JPL Sentry has updated its 2019 SU3 risk assessment - see above
Noted that NEODyS has updated its 2019 SU3 risk assessment - see above
Noted that JPL Sentry has posted 2019 SX8 as an impact risk - see above
Grabbed MPEC 2019-T08 - 2019 SR8 - see above
Grabbed MPEC 2019-T09 - 2019 SS8 - see above
Grabbed MPEC 2019-T10 - Daily Orbit Update - see above
Grabbed MPEC 2019-T11 - 2019 ST8 - see above
Grabbed MPEC 2019-T12 - 2019 SU8 - see above
Grabbed MPEC 2019-T13 - 2019 SV8 - see above
Grabbed MPEC 2019-T14 - 2019 SW8 - see above
Grabbed MPEC 2019-T15 - 2019 SX8 - see above
0610Grabbed MPEC 2019-T06 - 2019 SP8 - see above
Grabbed MPEC 2019-T07 - 2019 SQ8 - see above
0409Noted that JPL Sentry has posted 2019 SM8 as an impact risk - see above
Grabbed MPEC 2019-T01 - 2019 SJ8 - see above
Grabbed MPEC 2019-T02 - 2019 SK8 - see above
Grabbed MPEC 2019-T03 - 2019 SL8 - see above
Grabbed MPEC 2019-T04 - 2019 SM8 - see above
Grabbed MPEC 2019-T05 - 2019 SO8 - see above