Contents  on 9 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 9 October '19

Fourteen objects reported inside ten LD

Bulletin - 0000 UTC 28 Oct.:  Two new discoveries of close passers have been announced.

Earth passageI D~Size~Inside ten LDNotes
~2.5 LD ~Oct. 82019 TJ515 m Oct. 4 - 12MPEC
2.51 LD at 0919 UTC Oct. 192019 TK511 m tomorrow - Oct. 27MPEC


Fourteen minor objects are reported within ten lunar distances (LD) of Earth today, and three are flitting through Earth's gravitational sphere of influence (SOI). Risk-listed 2019 SL7 comes its closest to Earth this time around, reaching 1.41 LD, while two others leave the SOI. 2019 TM3 flies off from 1.91 to 3.87 LD and 2019 TW1 from 2.36 to 4.70 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
1.25 LD Oct. 4 2019 TX 6 m  6.60 to 8.18 LD Sept. 28 - Oct. 11 NHATS target, risk
1.25 LD yesterday 2019 TM3 11 m  1.91 to 3.87 LD Oct. 3 - 12 exits Earth SOI
1.41 LD today 2019 SL7 23 m  1.41 LD Oct. 7 - 12 Moon closest 2.01 LD at 0938 UTC, Earth closest at 1427 UTC, risk - DOU
1.5   LD yesterday* 2019 TW1 9 m  2.4 to 4.7 LD Oct. 4 - 12 EPU +/- 9 mins.*, exits Earth SOI
2.36 LD Sept. 24 2019 SU3 12 m  8.98 to 9.57 LD Sept. 6 - tomorrow NHATS target, risk - DOU
3.5   LD yesterday* 2019 TC1 12 m  3.8 to 5.7 LD Oct. 5 - 11 EPU +/- 50 mins.*
3.67 LD Oct. 6 2019 TF3 9 m  4.67 to 5.44 LD Sept. 28 - Oct. 14 NHATS target
4.11 LD Oct. 5 2019 TV 8 m  8.62 to 10.45 LD Sept. 30 - today exits ten LD
4.38 LD yesterday 2019 TU 21 m  4.67 to 5.80 LD Oct. 4 - 12 risk - DOU
4.50 LD Oct. 2 2019 TW 10 m  6.90 to 7.55 LD Sept. 21 - Oct. 13 NHATS target
7.75 LD yesterday 2019 SB6 15 m  7.80 to 8.19 LD Oct. 4 - 12 NHATS target
8.02 LD today 2019 TZ 17 m  8.02 LD Oct. 7 - 11 Earth closest at 1016 UTC
8.41 LD yesterday 2019 TS 28 m  8.43 to 8.75 LD Oct. 5 - 11 DOU
9.39 LD yesterday 2019 TM 36 m  9.50 to 10.35 LD Oct. 7 - 9 exits ten LD

This report was generated at 2126 UTC with follow-up in today's DOU MPEC for passing risk-listed 2019 SL7, outbound 2019 TS, outbound risk-listed 2019 TU and 2019 SU3, and departed risk-listed 2019 SD, plus astrometry from late September for 2019 SP2, 2019 SW1 (first follow-up, 1.11 days added to 0.58-day discovery arc), and risk-listed 2019 RQ2.

Approaching Traffic - sorted by 10-LD bubble entry date
Earth passage I D ~Size Distance today  Inside ten LD Notes
2.9   LD Oct. 13* 2019 TT1 22 m  11.6 from 14.5 LD tomorrow - Oct. 16 EPU +/- 2.02 hours*
9.3   LD Oct. 13* 2019 TH2 19 m  10.9 from 11.9 LD Oct. 11 - 15 EPU +/- 9 mins.*
8.57 LD Oct. 12 2019 SV9 28 m  12.30 from 14.63 LD Oct. 11 - 14
8.30 LD Oct. 18 2019 TE2 26 m  20.27 from 22.42 LD Oct. 15 - 20
*EPU = Earth passage uncertainty



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. 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 9 October '19

The MPC's NEO Confirmation Page has 83 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 83 objects listed. Of these, 27 were "one nighters." So far The Tracking News has counted a total of 126 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 9 October '19

Minor Planet Electronic Circulars

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


MPEC 2019-T184 - "23:32 UT" - 2019 TK5


MPEC 2019-T183 - "23:30 UT" - 2019 TJ5


MPEC 2019-T182 - "23:13 UT" - 2019 TH5


MPEC 2019-T181 - "22:48 UT" - 2019 TG5


MPEC 2019-T180 - "20:56 UT" - 2019 TD5


MPEC 2019-T179 - "17:30 UT" - 2019 TZ4


MPEC 2019-T178 - "17:13 UT" - 2019 TS4


MPEC 2019-T177 - "17:08 UT" - 2019 TR4


MPEC 2019-T176 - "16:46 UT" - 2019 TQ4


MPEC 2019-T175 - "16:39 UT" - 2019 TP4


MPEC 2019-T174 - "16:37 UT" - 2019 TO4


MPEC 2019-T173 - "16:33 UT" - 2019 TN4


MPEC 2019-T172 - "16:30 UT" - 2019 TM4


MPEC 2019-T171 - "16:26 UT" - 2019 TL4


MPEC 2019-T170 - "16:17 UT" - 2019 TK4


<< OOC on 9 October '19 -- MPEC 2019-T169 - "16:11 UT" - Observations and Orbits of Comets and A/ Objects


MPEC 2019-T168 - "15:10 UT" - 2019 TC4


MPEC 2019-T167 - "14:04 UT" - 2019 TJ4


<< DOU on 9 October '19 >>  MPEC 2019-T166 - "12:00 UT" - Daily Orbit Update

Observers  on 9 October '19

A total of 149 observers appear in today's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 11 in MPEC 2019-T169 -- C/2018 W2, C/2018 U1, C/2018 N2, C/2017 M5, C/2017 K2, 260P, 160P, 68P, 36P, 29P, 2P
349Ageo Obs. in Japan, 23 in MPEC 2019-T169 -- P/2019 R1, C/2019 M3, C/2019 K7, C/2019 K5, C/2018 Y1, C/2018 W2, C/2018 U1, C/2018 N2, C/2018 L2, C/2017 T2, C/2017 K5, C/2017 K2, C/2016 R2, C/2015 XY1, 384P, 261P, 260P, 155P, 114P, 101P, 78P, 68P, 29P
C97Al-Fulaij Obs., 1 in MPEC 2019-T169 -- 68P
K40Altdorf Obs. in Germany, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 68P, 29P
A44Altschwendt Obs. in Austria, 1 in MPEC 2019-T169 -- C/2019 M3
L33Ananjev Obs. in Ukraine, 1 in MPEC 2019-T169 -- C/2019 M3
R57Aorangi Iti Obs., 3 in MPEC 2019-T169 -- C/2019 K7, C/2019 K1, 2017 U7
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2019-T168, 2019-T170, 2019-T172, 2019-T173, 2019-T174, 2019-T176, 2019-T177, 2019-T178, 2019-T179 & 2019-T182 -- 2019 TZ4, 2019 TS4, 2019 TR4, 2019 TQ4, 2019 TO4, 2019 TN4, 2019 TM4, 2019 TK4, 2019 TH5, 2019 TC4
T05ATLAS Haleakala in Hawaii, 34 in MPEC 2019-T169 -- C/2019 N1, C/2019 M3, P/2019 M2, C/2019 K8, C/2019 K5, C/2019 K4, C/2019 J1, C/2019 D1, C/2018 W2, 2018 V3, C/2018 U1, C/2018 N2, C/2018 L2, C/2018 DO4, C/2018 B1, C/2018 A3, C/2017 Y2, 2017 U7, C/2017 T2, C/2017 K2, C/2017 B3, C/2016 Q2, 384P, 381P, 261P, 260P, 215P, 173P, 160P, 114P, 101P, 74P, 68P, 29P
T08ATLAS Mauna Loa in Hawaii, 31 in MPEC 2019-T169 -- C/2019 N1, C/2019 K4, C/2019 D1, C/2018 W2, 2018 V3, C/2018 U1, C/2018 N2, C/2018 L2, C/2018 A3, C/2017 Y2, 2017 U7, C/2017 T2, C/2017 K5, C/2017 B3, C/2016 M1, C/2014 OE4, C/2011 KP36, 384P, 381P, 261P, 260P, 215P, 173P, 155P, 114P, 101P, 78P, 74P, 68P, 36P, 29P
I47Auger Obs. in Argentina, 1 in MPEC 2019-T169 -- 101P
069Baldone Obs. in Latvia, 1 in MPEC 2019-T169 -- 200P
C77Bernezzo Obs. in Italy, 1 in MPEC 2019-T169 -- C/2019 M3
B88Bigmuskie Obs. in Italy, 1 in MPEC 2019-T166 -- 2019 PA
Q68Blue Mountains Obs. in New South Wales, 4 in MPEC 2019-T169 -- 2018 V3, 2017 U7, C/2017 B3, 68P
B96Brixiis Obs. in Belgium, 14 in MPEC 2019-T169 -- C/2019 N1, C/2019 K4, C/2019 D1, C/2018 W2, C/2018 U1, C/2018 N2, C/2017 T2, C/2017 K2, C/2016 R2, C/2016 A1, 260P, 114P, 68P, 29P
073Bucharest Obs. in Romania, 2 in MPEC 2019-T169 -- C/2018 W2, 29P
215Buchloe Obs. in Germany, 32 in MPEC 2019-T169 -- 2019 O3, C/2019 N1, C/2019 M3, C/2019 K5, C/2019 F1, C/2018 Y1, C/2018 W2, 2018 V3, C/2018 N2, C/2018 L2, C/2018 A3, C/2017 T2, C/2017 K5, C/2016 Q2, C/2011 KP36, P/2008 Y1, P/2007 T4, P/2006 R1, 385P, 384P, 381P, 261P, 260P, 223P, 203P, 173P, 101P, 78P, 68P, 36P, 29P, 2P
Z84Calar Alto Schmidt in Spain, 3 in MPECs 2019-T169 & 2019-T182 -- 2019 TH5, 385P, 76P
X74Campo dos Amarais Obs., 2 in MPEC 2019-T169 -- 2017 U7, 215P
Z36Cancelada Obs., 2 in MPEC 2019-T166 -- 248926, 162082
Z46Cardiff Obs., 4 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, 260P
I72Carpe Noctem Obs. in Spain, 11 in MPEC 2019-T169 -- C/2018 W2, C/2018 U1, C/2018 N2, C/2017 T2, C/2017 K2, C/2016 R2, 261P, 260P, 114P, 78P, 29P
160Castelmartini Obs. in Italy, 15 in MPECs 2019-T166 & 2019-T169 -- C/2018 W2, C/2018 N2, 2014 PF68, 355256, 326777, 297418, 105140, 1620, 384P, 260P, 114P, 68P, 65P, 2I, 29P
703Catalina Sky Survey (CSS) in Arizona, 13 in MPECs 2019-T169 & 2019-T183 -- 2019 TJ5, C/2019 M3, C/2019 K4, C/2018 N2, C/2018 DO4, C/2018 B1, P/2007 T4, 381P, 261P, 260P, 159P, 155P, 78P
010!program code "!" (10) via Caussols Obs., 1 in MPEC 2019-T169 -- C/2019 M3
107Cavezzo Obs. in Italy, 4 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 29P
470Ceccano Obs. in Italy, 1 in MPEC 2019-T169 -- 2I
A77Chante-Perdrix Obs. in France, 32 in MPEC 2019-T169 -- 2019 Q1, C/2019 K5, C/2019 D1, C/2018 W2, C/2018 N2, C/2017 T2, C/2017 K2, P/2008 Y1, P/2007 T4, 385P, 384P, 289P, 266P, 261P, 260P, 228P, 203P, 200P, 173P, 160P, 155P, 124P, 114P, 101P, 99P, 78P, 76P, 68P, 36P, 2I, 29P, 2P
970Chelmsford Obs. in England, 13 in MPEC 2019-T169 -- C/2019 N1, C/2019 D1, C/2018 W2, C/2018 U1, C/2018 N2, C/2017 Y2, C/2017 T2, C/2017 K2, C/2016 R2, 260P, 114P, 2I, 29P
W76ChileScope Obs., 1 in MPEC 2019-T169 -- 29P
B92Chinon Obs. in France, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, 260P, 68P
J01Cielo Profundo Obs. in Spain, 8 in MPEC 2019-T169 -- C/2019 K4, C/2018 W2, C/2018 N2, C/2017 T2, C/2017 K2, 260P, 68P, 29P
850Cordell-Lorenz Obs. in Tennessee, 8 in MPECs 2019-T166 & 2019-T169 -- 2019 SU3, C/2019 K4, C/2019 D1, C/2018 W2, C/2018 N2, C/2017 T2, 260P, 29P
822Cordoba Obs. in Argentina, 1 in MPEC 2019-T169 -- 68P
106Crni Vrh Obs. in Slovenia, 3 in MPEC 2019-T169 -- C/2018 W2, C/2017 K2, 384P
V16Dark Sky New Mexico Obs. in New Mexico, 1 in MPEC 2019-T169 -- 68P
K87Dettelbach Vineyard Obs. in Germany, 1 in MPEC 2019-T169 -- C/2018 W2
G37Discovery Channel Telescope (DCT) in Arizona, 2 in MPEC 2019-T169 -- C/2018 P5, 114P
L35DreamSky Obs., 4 in MPEC 2019-T169 -- C/2019 K5, C/2018 N2, C/2017 K2, 101P
113Drebach Obs. in Germany, 2 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2
L29Drebach-South Obs., 2 in MPEC 2019-T169 -- C/2018 W2, 381P
K02Eastwood Obs. in England, 12 in MPEC 2019-T169 -- C/2019 K5, C/2019 K4, C/2018 W2, C/2018 N2, C/2017 T2, C/2017 K2, 260P, 114P, 101P, 68P, 2I, 29P
K77EHB01 Obs., 4 in MPEC 2019-T169 -- C/2019 K8, C/2018 U1, 203P, 114P
J04ESA Optical Ground Station in the Canary Islands, 1 in MPEC 2019-T169 -- C/2019 M3
734Farpoint Obs. in Kansas, 1 in MPEC 2019-T170 -- 2019 TK4
595Farra d'Isonzo Obs. in Italy, 2 in MPECs 2019-T166 & 2019-T169 -- 2019 TB4, C/2018 W2
K83Forti Obs., 4 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 29P
I88Fuensanta de Martos Obs. in Spain, 3 in MPEC 2019-T169 -- C/2018 W2, C/2017 K2, 29P
C73Galati Obs. in Romania, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 101P, 29P
L34Galhassin Robotic Telescope, 1 in MPEC 2019-T169 -- 260P
372Geisei Obs. in Japan, 11 in MPEC 2019-T169 -- P/2019 R1, C/2019 N1, C/2019 L3, C/2019 K7, C/2019 K5, C/2019 K4, C/2018 W2, C/2018 N2, C/2017 T2, 260P, 29P
E89Geyserland Obs. in New Zealand, 3 in MPEC 2019-T169 -- C/2017 M4, C/2017 B3, 68P
203GiaGa Obs. in Italy, 2 in MPEC 2019-T169 -- 381P, 29P
B83Gieres Obs. in France, 3 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P
E94Gisborne Obs. in New Zealand, 1 in MPEC 2019-T169 -- 29P
K73Gravina Obs. in Italy, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, 260P, 68P
J95Great Shefford Obs. in England, 4 in MPECs 2019-T166, 2019-T169, 2019-T182 & 2019-T183 -- 2019 TJ5, 2019 TH5, 2019 SL7, C/2019 M3
134Groszschwabhausen Obs. in Germany, 1 in MPEC 2019-T169 -- C/2018 W2
458Guadarrama Obs. in Spain, 1 in MPEC 2019-T169 -- C/2018 W2
A17Guidestar Obs. in Germany, 1 in MPEC 2019-T169 -- 381P
N502program code 2 via Himalayan Chandra Telescope, 1 in MPEC 2019-T169 -- 2I
750Hobbs Obs. in Wisconsin, 1 in MPEC 2019-T169 -- C/2018 N2
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2019-T169 -- C/2018 W2
U695Hidetaka Sato in Japan via iTelescope Obs. Auberry in northern California, 2 in MPEC 2019-T169 -- C/2019 M3, P/2019 M2
U69_program code "_" (29) via iTelescope Obs. Auberry in northern California, 1 in MPEC 2019-T169 -- C/2019 K5
H06iTelescope Obs. Mayhill in New Mexico, 5 in MPEC 2019-T169 -- C/2019 K4, C/2018 W2, C/2018 N2, C/2017 T2, 260P
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 19 in MPEC 2019-T169 -- 2019 O4, C/2019 N1, C/2019 M3, P/2019 M2, C/2019 K8, C/2019 K4, C/2019 JU6, C/2019 H1, C/2019 D1, C/2019 A9, C/2018 P5, C/2018 M1, C/2017 K5, 378P, 200P, 155P, 114P, 78P, 2P
Q62iTelescope Obs. Siding Spring in New South Wales, 2 in MPEC 2019-T169 -- 2017 U7, C/2017 B3
Q621Hidetaka Sato in Japan via iTelescope Obs. Siding Spring in New South Wales, 21 in MPEC 2019-T169 -- 2019 Q2, C/2019 K4, C/2019 J3, C/2019 A9, C/2018 W1, 2018 V3, C/2018 A6, C/2017 B3, C/2016 N6, C/2016 M1, C/2015 XY1, C/2015 V2, 384P, 313P, 289P, 209P, 173P, 101P, 76P, 36P, 29P
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 2 in MPECs 2019-T169 & 2019-T183 -- 2019 TJ5, 2017 U7
Z32Javalambre Obs., 1 in MPEC 2019-T169 -- C/2017 Y1
585Kiev Comet Station in Ukraine, 6 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, C/2017 K2, 260P, 68P
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 4 in MPECs 2019-T166, 2019-T173, 2019-T174 & 2019-T180 -- 2019 TO4, 2019 TN4, 2019 TD5, 2019 SD
L12Koksijde Obs., 2 in MPEC 2019-T169 -- C/2018 W2, 260P
D95Kurihara Obs. in Japan, 12 in MPEC 2019-T169 -- C/2019 F1, C/2019 D1, C/2018 Y1, C/2018 W2, C/2018 N2, C/2017 T2, C/2015 O1, 380P, 260P, 74P, 68P, 29P
J38La Vara Obs. in Spain, 2 in MPEC 2019-T169 -- C/2018 W2, 29P
W85LCO Cerro Tololo A in Chile, 1 in MPEC 2019-T166 -- 2019 TU
W87LCO Cerro Tololo C in Chile, 1 in MPEC 2019-T166 -- 2019 TS
H01Magdalena Ridge Obs. (MRO) in New Mexico, 5 in MPECs 2019-T175, 2019-T181, 2019-T182, 2019-T183 & 2019-T184 -- 2019 TP4, 2019 TK5, 2019 TJ5, 2019 TH5, 2019 TG5
C10Maisoncelles Obs. in France, 6 in MPEC 2019-T169 -- C/2018 W2, C/2017 T2, 155P, 78P, 76P, 29P
232Masquefa Obs. in Spain, 1 in MPEC 2019-T169 -- 68P
568^R. Wainscoat on Mauna Kea in Hawaii, 1 in MPEC 2019-T174 -- 2019 TO4
Z50Mazariegos Obs., 3 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 29P
711McDonald Obs. in Texas, 1 in MPEC 2019-T169 -- 2019 Q1
K06Montagut Obs., 1 in MPEC 2019-T169 -- 68P
213Montcabre Obs. in Spain, 7 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, C/2017 K2, 260P, 2I, 29P
108Montelupo Obs. in Italy, 2 in MPEC 2019-T169 -- C/2018 N2, 260P
V01Mountainville Obs. in Utah, 2 in MPEC 2019-T169 -- C/2019 M3, 381P
474Mt. John Obs. in New Zealand, 8 in MPEC 2019-T169 -- 2019 Q2, C/2019 L1, C/2019 K7, C/2019 K1, C/2019 J1, 2018 V3, 2017 U7, C/2017 B3
G96Mt. Lemmon Survey (MLS) in Arizona, 30 in MPECs 2019-T169, 2019-T171, 2019-T172, 2019-T175, 2019-T176, 2019-T177, 2019-T178, 2019-T179, 2019-T181, 2019-T182 & 2019-T184 -- 2019 TZ4, 2019 TS4, 2019 TR4, 2019 TQ4, 2019 TP4, 2019 TM4, 2019 TL4, 2019 TK5, 2019 TH5, 2019 TG5, C/2019 M3, P/2019 M2, C/2019 K5, C/2018 DO4, C/2018 B1, C/2017 T2, C/2015 H2, 381P, 372P, 266P, 200P, 172P, 155P, 129P, 114P, 105P, 65P, 36P, 26P, 2P
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2019-T169 -- C/2018 W2
J47Nazaret Obs. in Spain, 6 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, 260P, 68P, 29P
C53NEOSSat in Earth orbit, 6 in MPEC 2019-T169 -- C/2019 K5, C/2019 A9, C/2018 W1, C/2018 F4, C/2017 T2, 2I
C47Nonndorf Obs. in Austria, 8 in MPEC 2019-T169 -- C/2019 K4, C/2018 W2, C/2018 N2, C/2018 L2, C/2017 K2, 261P, 260P, 29P
J69North Obs. in England, 2 in MPEC 2019-T166 -- 2019 SL7, 2016 EX27
Z80Northolt Branch Obs. in England, 6 in MPEC 2019-T169 -- C/2018 N2, C/2017 K2, C/2010 U3, 260P, 68P, 29P
G34Oberfrauendorf Obs. in Germany, 2 in MPEC 2019-T169 -- C/2019 M3, C/2018 W2
C23Olmen Obs. in Belgium, 20 in MPEC 2019-T169 -- C/2019 N1, C/2019 M3, C/2019 L3, C/2019 K8, C/2019 K5, C/2019 K4, C/2019 D1, C/2018 W2, C/2018 U1, C/2018 N2, C/2018 A3, C/2017 T2, C/2017 K2, C/2016 R2, C/2014 OE4, 260P, 114P, 68P, 2I, 29P
J43Oukaimeden Obs. in Morocco, 2 in MPEC 2019-T169 -- 158P, 29P
F51Pan-STARRS 1 (PS1) in Hawaii, 34 in MPECs 2019-T166, 2019-T167, 2019-T168, 2019-T169, 2019-T170, 2019-T171, 2019-T173, 2019-T174, 2019-T180 & 2019-T182 -- 2019 TO4, 2019 TN4, 2019 TL4, 2019 TK4, 2019 TJ4, 2019 TH5, 2019 TD5, 2019 TC4, P/2019 M2, C/2019 K5, C/2019 K4, 2019 CZ4, 2018 JF, C/2018 B1, C/2017 K2, 2016 SG1, P/2011 U1, 2008 TC2, 2004 KF15, 2001 QJ, 455432, 354332, 26663, 381P, 261P, 178P, 173P, 172P, 143P, 105P, 101P, 65P, 36P, 29P
F52Pan-STARRS 2 (PS2) in Hawaii, 11 in MPECs 2019-T166, 2019-T168, 2019-T169, 2019-T181 & 2019-T184 -- 2019 TK5, 2019 TG5, 2019 TC4, C/2019 M3, 2019 JY6, C/2018 U1, C/2018 P5, 2009 SP, 173P, 172P, 29P
K63Pascoli Obs. in Italy, 3 in MPECs 2019-T166, 2019-T169 & 2019-T182 -- 2019 TH5, 492143, 2I
K19PASTIS Obs. in France, 2 in MPEC 2019-T169 -- C/2018 N2, 260P
B49Paus Obs. in Spain, 1 in MPEC 2019-T166 -- 2019 TA4
323Perth Obs. in Western Australia, 2 in MPEC 2019-T169 -- 2018 V3, 2017 U7
J52Pinsoro Obs. in Spain, 4 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, 260P
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 2 in MPEC 2019-T169 -- C/2019 M3, P/2019 M2
K80Platanus Obs., 1 in MPEC 2019-T169 -- C/2019 F1
654Pomona College Table Mtn. Obs. (PCTMO) in southern California, 2 in MPEC 2019-T166 -- 2019 MK2, 2019 LW1
D29Purple Mtn. Obs. Xuyi Station in China, 1 in MPEC 2019-T169 -- C/2019 K5
G39ROAD in Chile, 1 in MPEC 2019-T169 -- 260P
L04ROASTERR-1 in Romania, 3 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 K2
K61Rokycany Obs. in the Czech Republic, 1 in MPEC 2019-T169 -- C/2018 W2
L40Saarbruecken Rastpfuhl Obs., 1 in MPEC 2019-T169 -- 68P
104San Marcello Pistoiese Obs. in Italy, 3 in MPECs 2019-T169 & 2019-T182 -- 2019 TH5, C/2018 W2, 260P
H36Sandlot Obs. in Kansas, 3 in MPECs 2019-T169 & 2019-T170 -- 2019 TK4, C/2019 M3, 2I
A29Santa Maria a Monte Obs. in Italy, 3 in MPEC 2019-T169 -- C/2018 N2, 260P, 29P
C95SATINO-1 in France, 20 in MPECs 2019-T166 & 2019-T169 -- 2019 O4, 2019 O3, 2019 O2, 2019 K6, C/2018 W2, C/2018 N2, C/2017 T2, C/2016 Q2, 2012 CK2, 384P, 260P, 203P, 173P, 155P, 114P, 101P, 76P, 68P, 65P, 29P
K96Savelli Obs., 1 in MPEC 2019-T169 -- C/2018 W2
204Schiaparelli Obs. in Italy, 22 in MPECs 2019-T166 & 2019-T169 -- 2019 SZ, 2019 SW1, 2019 ST2, 2019 SS8, 2019 SP2, 2019 RV, 2019 RU3, 2019 RQ2, 2019 RE2, 2019 QO6, 2019 PR2, 2019 LK5, C/2018 W2, C/2018 N2, C/2017 T2, 2016 EL158, 2015 RZ35, 2002 UZ30, 260P, 78P, 2I, 29P
033Schwarzschild Obs. in Germany, 2 in MPECs 2019-T170 & 2019-T179 -- 2019 TZ4, 2019 TK4
K14Sencelles Obs. in Spain, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 114P, 29P
Q11Shinshiro Obs., 45 in MPEC 2019-T169 -- 2019 O3, C/2019 N1, C/2019 M3, C/2019 L3, C/2019 L1, C/2019 K7, C/2019 K5, C/2019 K4, C/2019 J3, C/2019 D1, C/2018 Y1, C/2018 W2, C/2018 U1, C/2018 N2, C/2018 L2, C/2018 A3, C/2017 Y2, C/2017 T2, C/2017 K5, C/2017 K2, C/2016 R2, C/2016 A1, C/2015 XY1, C/2014 OE4, C/2011 KP36, P/2007 T4, P/2006 R1, 385P, 384P, 289P, 261P, 260P, 215P, 203P, 200P, 160P, 159P, 155P, 143P, 114P, 101P, 76P, 68P, 29P, 2P
G40"G. Gasparovic in Croatia via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-T169 -- 203P
G40-program code "-" (22) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-T169 -- 384P
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2019-T169 -- 260P
G409B. Lutkenhoner in Germany via Slooh.com Canary Islands Obs. in the Canary Islands, 19 in MPEC 2019-T169 -- P/2019 R1, C/2019 L3, C/2019 K7, C/2019 K4, C/2018 Y1, C/2018 W2, C/2018 N2, C/2017 T2, C/2017 K2, C/2015 O1, 384P, 261P, 260P, 173P, 160P, 155P, 114P, 78P, 2I
W883B. Lutkenhoner in Germany via Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-T169 -- 2017 U7
W884G. Gasparovic in Croatia via Slooh.com Chile Obs. in Chile, 1 in MPEC 2019-T169 -- C/2018 A6
L06Sormano2 Obs. in Italy, 6 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2018 DO4, 260P, 2I, 29P
Q21Southern Utsunomiya in Japan, 4 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 29P
691Spacewatch 0.9m telescope in Arizona, 2 in MPEC 2019-T169 -- 101P, 2P
291Spacewatch 1.8m telescope in Arizona, 2 in MPECs 2019-T166 & 2019-T167 -- 2019 TJ4, 2019 SU3
L39Spica Obs., 1 in MPEC 2019-T169 -- C/2019 N1
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2019-T169 -- C/2019 M3
I52Steward Obs. Mt. Lemmon Station in Arizona, 13 in MPECs 2019-T166, 2019-T167, 2019-T169, 2019-T171, 2019-T175, 2019-T176, 2019-T177, 2019-T179, 2019-T181, 2019-T182 & 2019-T183 -- 2019 TZ4, 2019 TR4, 2019 TQ4, 2019 TP4, 2019 TL4, 2019 TJ5, 2019 TJ4, 2019 TH5, 2019 TG5, 2019 SU8, 2019 SG5, C/2019 M3, 155P
A71Stixendorf Obs. in Austria, 12 in MPEC 2019-T169 -- C/2019 L3, C/2018 W2, C/2018 N2, C/2017 T2, P/2008 Y1, 384P, 381P, 261P, 260P, 114P, 2I, 29P
Q23Sukagawa Obs., 7 in MPEC 2019-T169 -- C/2019 K5, C/2018 W2, C/2018 N2, C/2017 T2, 260P, 114P, 68P
461SZTE Asteroid Program in Hungary, 19 in MPEC 2019-T169 -- 2019 Q1, 2019 O4, 2019 O3, 2019 O2, C/2019 M3, P/2019 M2, 2019 K6, C/2018 U1, C/2018 B1, C/2017 T2, C/2017 M5, C/2017 K2, C/2016 R2, C/2016 Q2, C/2016 A1, C/2015 X5, C/2015 T2, C/2015 H2, C/2014 OE4
J22Tacande Obs. in the Canary Islands, 33 in MPEC 2019-T169 -- C/2019 N1, C/2019 M3, P/2019 M2, C/2019 K8, C/2019 K7, C/2019 K5, C/2019 K4, C/2019 J3, C/2019 D1, C/2018 Y1, C/2018 W2, C/2018 U1, C/2018 N2, C/2018 L2, C/2018 A3, C/2017 T2, C/2016 M1, C/2016 A1, C/2011 KP36, 385P, 384P, 381P, 289P, 261P, 260P, 223P, 215P, 200P, 160P, 155P, 114P, 68P, 29P
I81Tarbatness Obs. in Scotland, 21 in MPEC 2019-T169 -- C/2019 N1, C/2019 K8, C/2019 K5, C/2019 K4, C/2019 D1, C/2018 Y1, C/2018 W2, C/2018 N2, C/2018 L2, C/2018 A3, C/2017 T2, C/2017 K2, C/2016 R2, 384P, 261P, 260P, 155P, 114P, 101P, 76P, 29P
A98Taurus-1 Obs. in Belarus, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2018 A3, C/2017 T2, 260P
A16Tentlingen Obs. in Switzerland, 4 in MPECs 2019-T166 & 2019-T169 -- C/2017 K2, 85709, 537342, 297418
W33Transit Dreams Obs., 6 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 260P, 209P, 123P, 29P
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 1 in MPEC 2019-T166 -- 2018 MQ5
Z55Uraniborg Obs., 6 in MPEC 2019-T169 -- C/2019 K5, C/2018 W2, C/2018 N2, C/2017 T2, 260P, 29P
K41Vegaquattro Obs. in Italy, 1 in MPEC 2019-T169 -- C/2018 N2
H47Vicksburg Obs. in Mississippi, 8 in MPEC 2019-T169 -- C/2019 K5, C/2018 W2, C/2018 N2, C/2017 T2, 261P, 260P, 155P, 29P
C90Vinyols Obs. in Spain, 2 in MPEC 2019-T169 -- C/2018 W2, 260P
L01Visnjan Obs., 7 in MPECs 2019-T167, 2019-T168, 2019-T169, 2019-T170, 2019-T179 & 2019-T182 -- 2019 TZ4, 2019 TK4, 2019 TJ4, 2019 TH5, 2019 TC4, C/2019 M3, 381P
G33Wickede Obs. in Germany, 1 in MPEC 2019-T169 -- C/2018 W2
C51WISE in Earth polar orbit, 3 in MPEC 2019-T169 -- C/2017 T2, 160P, 68P
I15Wishing Star Obs. in Rhode Island, 3 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, 68P
367Yatsuka Obs. in Japan, 5 in MPEC 2019-T169 -- C/2018 W2, C/2018 N2, C/2017 T2, 260P, 78P
Z57Zuben Obs., 1 in MPEC 2019-T169 -- C/2018 W2
I41Zwicky Transient Facility (ZTF) in southern California, 16 in MPECs 2019-T166 & 2019-T169 -- 2019 SZ2, 2019 PA, P/2019 M2, C/2018 U1, 2015 YL10, 2010 UH7, 2006 MA, 530743, 491565, 442243, 326742, 326291, 243025, 162273, 141593, 7889
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 9 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 TS4JPL Sentry19052117-211713.561e-10-8.60-8.600JPL: Computed at 11:28 today Pacific time based on 17 observations spanning 2.0716 days (2019-Oct-07.40779 to 2019-Oct-09.47942). Diameter approximately 0.110 km. from weighted mean H=22.51.
2019 TUJPL Sentry15452088-2119118.890346e-05-4.81-4.810JPL: Computed at 06:43 today Pacific time based on 43 observations spanning 4.9504 days (2019-Oct-03.26434 to 2019-Oct-08.214722). Diameter approximately 0.021 km. from weighted mean H=26.02.
NEODyS15452079-2115226.49e-05-4.95-4.960NEODyS: "Based on 43 optical observations (of which 0 are rejected as outliers) from 2019-10-03.265 to 2019-10-08.216."
2019 SL7JPL Sentry15452097-210523.904e-07-6.87-7.000JPL: Computed at 06:37 today Pacific time based on 63 observations spanning 12.500 days (2019-Sep-26.43402 to 2019-Oct-08.933532). Diameter approximately 0.023 km. from weighted mean H=25.85.
NEODyS15452097-210522.18e-07-7.13-7.240NEODyS: "Based on 63 optical observations (of which 0 are rejected as outliers) from 2019-09-26.435 to 2019-10-08.934."
2019 SU3JPL Sentry15452084-2119640.0080337043-3.51-3.560JPL: Computed at 06:47 today Pacific time based on 124 observations spanning 15.926 days (2019-Sep-23.249638 to 2019-Oct-09.17609). Diameter approximately 0.012 km. from weighted mean H=27.17.
NEODyS15452084-21181977.65e-03-3.53-3.570NEODyS: "Based on 125 optical observations (of which 1 are rejected as outliers) from 2019-09-23.250 to 2019-10-09.177."
2019 SDJPL Sentry15452080-208012.917e-05-4.88-4.880JPL: Computed at 06:37 today Pacific time based on 134 observations spanning 21.945 days (2019-Sep-17.240317 to 2019-Oct-09.18493). Diameter approximately 0.028 km. from weighted mean H=25.40.
NEODyS1545208012.98e-06-5.88-5.880NEODyS: "Based on 134 optical observations (of which 1 are rejected as outliers) from 2019-09-17.241 to 2019-10-09.186."
2019 RQ2JPL Sentry15452105-210518.314e-08-7.42-7.420JPL: Computed at 06:35 today Pacific time based on 35 observations spanning 8.7115 days (2019-Sep-05.33361 to 2019-Sep-14.045088). Diameter approximately 0.028 km. from weighted mean H=25.44.
NEODyS15452056-210533.69e-07-6.68-6.940NEODyS: "Based on 35 optical observations (of which 0 are rejected as outliers) from 2019-09-05.334 to 2019-09-14.046."

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 9 October '19

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

2358Grabbed MPEC 2019-T183 - 2019 TJ5 - see above
Grabbed MPEC 2019-T184 - 2019 TK5 - see above
2330Grabbed MPEC 2019-T182 - 2019 TH5 - see above
2301Grabbed MPEC 2019-T181 - 2019 TG5 - see above
2126Generated Traffic Report
2100Grabbed MPEC 2019-T180 - 2019 TD5 - see above
1905Noted that JPL Sentry has posted 2019 TS4 as an impact risk - see above
Grabbed MPEC 2019-T177 - 2019 TR4 - see above
Grabbed MPEC 2019-T178 - 2019 TS4 - see above
Grabbed MPEC 2019-T179 - 2019 TZ4 - see above
1701Grabbed MPEC 2019-T169 - Observations and Orbits of Comets and A/ Objects - see above
Grabbed MPEC 2019-T170 - 2019 TK4 - see above
Grabbed MPEC 2019-T171 - 2019 TL4 - see above
Grabbed MPEC 2019-T172 - 2019 TM4 - see above
Grabbed MPEC 2019-T173 - 2019 TN4 - see above
Grabbed MPEC 2019-T174 - 2019 TO4 - see above
Grabbed MPEC 2019-T175 - 2019 TP4 - see above
Grabbed MPEC 2019-T176 - 2019 TQ4 - see above
1545Noted that JPL Sentry has updated its 2019 RQ2 risk assessment - see above
Noted that NEODyS has updated its 2019 RQ2 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 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 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 updated its 2019 TU risk assessment - see above
Noted that NEODyS has updated its 2019 TU risk assessment - see above
Grabbed MPEC 2019-T166 - Daily Orbit Update - see above
Grabbed MPEC 2019-T167 - 2019 TJ4 - see above
Grabbed MPEC 2019-T168 - 2019 TC4 - see above