Contents  on 29 March '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 29 March '17

Twelve objects reported inside ten LD

Twelve transient natural objects are reported moving within ten lunar distances (LD) of Earth today. Nearest, inside or entering our planet's sphere of gravitational influence (SOI), are newly announced objects 2017 FY101, which comes its closest this time around, reaching 1.35 LD at 1650 UTC, and intruder 2017 FJ101, inbound from 3.46 to 1.18 LD on its way to a passage of 0.85 LD tomorrow.

Earth passage I D ~Size Distance Today  Notes
0.85 LD tomorrow2017 FJ101 8 m  1.18 from 3.46 LD NEW, enters Earth SOI, intruder - MPEC
1.35 LD today2017 FY101 11 m  1.35 LD NEW, inside Earth SOI, Earth closest at 1650 UTC - MPEC
1.70 LD March 232017 FZ2 16 m  9.88 to 11.76 LD exits ten LD, NHATS target, risk
2.37 LD April 12017 FX90 20 m  8.08 from 10.73 LD enters ten LD, risk
2.57 LD March 222017 FJ3 4 m  3.91 to 4.28 LD NHATS target
3.51 LD March 222017 FW90 9 m  6.98 to 7.84 LD NHATS target, risk - DOU
3.54 LD today2017 FR91 13 m  3.54 LD NHATS target, Earth closest at 2010 UTC - DOU
3.94 LD March 242017 FS91 19 m  8.70 to 10.25 LD exits ten LD, NHATS target - DOU
4.19 LD March 262017 FL63 21 m  9.00 to 12.60 LD exits ten LD
5.75 LD March 272017 FF3 15 m  5.87 to 6.03 LD NHATS target
7.63 LD March 262015 TC25 4 m  7.83 to 8.04 LD radar/NHATS target, risk
9.04 LD March 272017 FK3 20 m  9.32 to 9.99 LD

This report was generated at 1941 UTC with nine discoveries, of which four are detailed in the active traffic tables here. The five already departed objects are 2017 FB102 (MPEC, DOU), which went by at 5.79 LD on March 21st, 2017 FU101 (MPEC) 8.19 LD on the 24th, 2017 FT101 (MPEC, DOU) 9.58 LD on the 25th, 2017 FO101 (MPEC) 3.61 LD on the 21st, and 2017 FL101 (MPEC) 1.20 LD from Earth and 1.89 LD from the Moon on the 25th.
        Today's DOU MPEC has follow-up for six objects in the traffic tables and four others that have departed: 2017 FU90, NHATS targets 2017 FR63 and 2017 FR, and radar target 1998 SL36.

Approaching (sorted by 10-LD bubble entry date)
8.99 LD April 22017 FV 47 m  < 10 LD March 31, radar target, risk - DOU
6.99 LD April 42017 FM101 16 m  < 10 LD April 1, NEW - MPEC
3.74 LD April 62017 FU64 59 m  < 10 LD April 4, risk - DOU
9.91 LD April 52017 FX101 30 m  < 10 LD April 4, NEW - MPEC
4.57 LD April 192014 JO25 812 m  < 10 LD April 18, radar target
7.93 LD May 292017 CS 446 m  < 10 LD May 26, radar target - DOU



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 29 March '17

The MPC's NEO Confirmation Page has 68 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 68 objects listed. Of these, 45 were "one nighters." So far The Tracking News has counted a total of 115 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 29 March '17

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 37 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2017-F200 - "19:53 UT" - 2014 KV76


MPEC 2017-F199 - "19:51 UT" - 2012 HL31


MPEC 2017-F198 - "19:46 UT" - 2012 TZ79


MPEC 2017-F197 - "16:08 UT" - 2017 FN102


MPEC 2017-F196 - "16:05 UT" - 2017 FM102


MPEC 2017-F195 - "16:02 UT" - 2017 FL102


MPEC 2017-F194 - "15:58 UT" - 2017 FR102


MPEC 2017-F193 - "15:55 UT" - 2017 FQ102


MPEC 2017-F192 - "15:51 UT" - 2017 FP102


MPEC 2017-F191 - "15:41 UT" - 2017 FO102


MPEC 2017-F190 - "15:36 UT" - 2017 FK102


<< DOU on 29 Mar. '17 >>  MPEC 2017-F189 - "12:05 UT" - Daily Orbit Update


MPEC 2017-F188 - "03:37 UT" - 2017 FB102


MPEC 2017-F187 - "03:34 UT" - 2017 FA102


MPEC 2017-F186 - "03:30 UT" - 2017 FZ101


MPEC 2017-F185 - "03:26 UT" - 2017 FY101


MPEC 2017-F184 - "03:23 UT" - 2017 FX101


MPEC 2017-F183 - "03:20 UT" - 2017 FW101


MPEC 2017-F182 - "03:16 UT" - 2017 FV101


MPEC 2017-F181 - "03:13 UT" - 2017 FU101


MPEC 2017-F180 - "03:09 UT" - 2017 FT101


MPEC 2017-F179 - "03:06 UT" - 2017 FG101


MPEC 2017-F178 - "03:02 UT" - 2017 FS101


MPEC 2017-F177 - "02:59 UT" - 2017 FR101


MPEC 2017-F176 - "02:56 UT" - 2017 FQ101


MPEC 2017-F175 - "02:53 UT" - 2017 FP101


MPEC 2017-F174 - "02:49 UT" - 2017 FO101


MPEC 2017-F173 - "02:39 UT" - 2017 FN101


MPEC 2017-F172 - "02:35 UT" - 2017 FM101


MPEC 2017-F171 - "02:32 UT" - 2017 FL101


MPEC 2017-F170 - "02:29 UT" - 2017 FK101


MPEC 2017-F169 - "02:26 UT" - 2017 FJ101


MPEC 2017-F168 - "02:22 UT" - 2017 FH101


MPEC 2017-F167 - "02:18 UT" - 2017 FF101


MPEC 2017-F166 - "02:15 UT" - 2017 FE101


MPEC 2017-F165 - "02:12 UT" - 2017 FD101


MPEC 2017-F164 - "02:08 UT" - 2017 FC101

Observers  on 29 March '17

A total of 58 observers appear in today's MPECs.

CodeObserver / observatory
E23Arcadia Obs. in New South Wales, 2 in MPECs 2017-F166 & 2017-F171 -- 2017 FL101, 2017 FE101
H21Astronomical Research Obs. Westfield in Illinois, 4 in MPEC 2017-F189 -- 2017 EU, 2017 CS, 2017 BU31, 137170
T05ATLAS Haleakala in Hawaii, 1 in MPEC 2017-F189 -- 143404
C77Bernezzo Obs. in Italy, 2 in MPECs 2017-F171 & 2017-F189 -- 2017 FL101, 2017 AC5
Z84Calar Alto Schmidt in Spain, 1 in MPEC 2017-F181 -- 2017 FU101
160Castelmartini Obs. in Italy, 11 in MPECs 2017-F171, 2017-F177, 2017-F180 & 2017-F189 -- 2017 FT101, 2017 FR101, 2017 FL101, 54789, 248083, 10636, 5653, 5131, 4179, 3352, 1627
703Catalina Sky Survey (CSS) in Arizona, 2 in MPECs 2017-F171 & 2017-F174 -- 2017 FO101, 2017 FL101
107Cavezzo Obs. in Italy, 3 in MPEC 2017-F189 -- 2017 AC5, 54789, 10636
K51Celado Obs. in Italy, 9 in MPECs 2017-F171, 2017-F173, 2017-F176, 2017-F177, 2017-F178, 2017-F180, 2017-F183, 2017-F184 & 2017-F196 -- 2017 FX101, 2017 FW101, 2017 FT101, 2017 FS101, 2017 FR101, 2017 FQ101, 2017 FN101, 2017 FM102, 2017 FL101
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 10 in MPECs 2017-F165, 2017-F166, 2017-F168, 2017-F170, 2017-F175, 2017-F189, 2017-F191 & 2017-F195 -- 2017 FP101, 2017 FO102, 2017 FL102, 2017 FK101, 2017 FH101, 2017 FE101, 2017 FD101, 2017 DT35, 2017 DO109, 2014 SO143
K65Cesena Obs. in Italy, 2 in MPECs 2017-F171 & 2017-F174 -- 2017 FO101, 2017 FL101
G58Chabot Obs. in northern California, 2 in MPEC 2017-F189 -- 2017 FV, 2017 FS101
958Dax Obs. in France, 3 in MPECs 2017-F169, 2017-F171 & 2017-F180 -- 2017 FT101, 2017 FL101, 2017 FJ101
J04ESA Optical Ground Station (ESA OGS) in the Canary Islands, 12 in MPECs 2017-F172, 2017-F173, 2017-F174, 2017-F184, 2017-F187, 2017-F188, 2017-F189, 2017-F192 & 2017-F196 -- 2017 FX101, 2017 FV, 2017 FU64, 2017 FP102, 2017 FO101, 2017 FN101, 2017 FM102, 2017 FM101, 2017 FC3, 2017 FC1, 2017 FB102, 2017 FA102
151Eschenberg Obs. in Switzerland, 2 in MPEC 2017-F189 -- 2017 CS, 143404
595Farra d'Isonzo Obs. in Italy, 3 in MPECs 2017-F168, 2017-F171 & 2017-F180 -- 2017 FT101, 2017 FL101, 2017 FH101
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2017-F171 -- 2017 FL101
203GiaGa Obs. in Italy, 2 in MPECs 2017-F171 & 2017-F180 -- 2017 FT101, 2017 FL101
K73Gravina Obs. in Italy, 2 in MPEC 2017-F189 -- 11398, 5604
J95Great Shefford Obs. in England, 3 in MPECs 2017-F171, 2017-F173 & 2017-F174 -- 2017 FO101, 2017 FN101, 2017 FL101
C43Hoyerswerda Obs. in Germany, 2 in MPECs 2017-F171 & 2017-F180 -- 2017 FT101, 2017 FL101
Q60ISON Siding Spring Obs. in New South Wales, 1 in MPEC 2017-F189 -- 1998 SL36
246KLENOT in the Czech Republic, 4 in MPECs 2017-F166, 2017-F168, 2017-F171 & 2017-F180 -- 2017 FT101, 2017 FL101, 2017 FH101, 2017 FE101
168Kourovskaya Obs. in Russia, 3 in MPEC 2017-F189 -- 2017 BM3, 4179, 3691
K92LCOGT Sutherland B in South Africa, 1 in MPEC 2017-F193 -- 2017 FQ102
K93LCOGT Sutherland C in South Africa, 1 in MPEC 2017-F175 -- 2017 FP101
K30Luscherz Obs. in Switzerland, 1 in MPEC 2017-F171 -- 2017 FL101
K38M57 Obs. in Italy, 2 in MPEC 2017-F189 -- 448003, 388838
H01Magdalena Ridge Obs. in New Mexico, 1 in MPEC 2017-F190 -- 2017 FK102
W92MASTER OAFA Obs., 1 in MPEC 2017-F189 -- 3554
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2017-F189 -- 1998 HK1
568_Marco Micheli on Mauna Kea in Hawaii, 12 in MPECs 2017-F165, 2017-F169, 2017-F170, 2017-F186, 2017-F188, 2017-F189, 2017-F191, 2017-F192, 2017-F193, 2017-F194, 2017-F195 & 2017-F198 -- 2017 FZ101, 2017 FR102, 2017 FQ102, 2017 FP102, 2017 FO102, 2017 FL102, 2017 FK101, 2017 FJ101, 2017 FD101, 2017 FB102, 2012 TZ79, 1997 GC32
474Mt. John Obs. in New Zealand, 28 in MPECs 2017-F165, 2017-F177, 2017-F179, 2017-F180, 2017-F185, 2017-F187, 2017-F189, 2017-F191, 2017-F192, 2017-F193 & 2017-F195 -- 2017 FY101, 2017 FU90, 2017 FT90, 2017 FT101, 2017 FR91, 2017 FR101, 2017 FR, 2017 FQ91, 2017 FQ102, 2017 FP63, 2017 FP102, 2017 FO90, 2017 FO102, 2017 FN91, 2017 FM91, 2017 FL102, 2017 FK91, 2017 FJ1, 2017 FH1, 2017 FG101, 2017 FD101, 2017 FC1, 2017 FA102, 2017 EX2, 2017 ER13, 2017 EQ13, 2017 DV37, 2017 CO5
G96Mt. Lemmon Survey (MLS) in Arizona, 19 in MPECs 2017-F164, 2017-F166, 2017-F167, 2017-F172, 2017-F173, 2017-F174, 2017-F176, 2017-F177, 2017-F178, 2017-F179, 2017-F180, 2017-F181, 2017-F182, 2017-F183, 2017-F184, 2017-F185, 2017-F187, 2017-F189, 2017-F196 & 2017-F197 -- 2017 FY101, 2017 FX101, 2017 FW101, 2017 FV101, 2017 FU101, 2017 FT101, 2017 FS101, 2017 FR101, 2017 FQ101, 2017 FO101, 2017 FN102, 2017 FN101, 2017 FM102, 2017 FM101, 2017 FG101, 2017 FF101, 2017 FE101, 2017 FC101, 2017 FA102
C47Nonndorf Obs. in Austria, 2 in MPECs 2017-F171 & 2017-F180 -- 2017 FT101, 2017 FL101
Z80Northolt Branch Obs. in England, 3 in MPECs 2017-F171 & 2017-F189 -- 2017 FL101, 2017 DC38, 5604
G34Oberfrauendorf Obs. in Germany, 1 in MPEC 2017-F171 -- 2017 FL101
583Odessa-Mayaki Obs. in the Ukraine, 1 in MPEC 2017-F189 -- 370307
J43Oukaimeden Obs. in Morocco, 1 in MPEC 2017-F189 -- 428694
F51Pan-STARRS 1 (PS1) in Hawaii, 41 in MPECs 2017-F164, 2017-F165, 2017-F168, 2017-F169, 2017-F170, 2017-F175, 2017-F179, 2017-F186, 2017-F187, 2017-F188, 2017-F189, 2017-F190, 2017-F191, 2017-F192, 2017-F193, 2017-F194, 2017-F195 & 2017-F198 -- 2017 FZ101, 2017 FR63, 2017 FR102, 2017 FQ102, 2017 FP102, 2017 FP101, 2017 FO102, 2017 FL102, 2017 FK102, 2017 FK101, 2017 FJ101, 2017 FH101, 2017 FG101, 2017 FE1, 2017 FD101, 2017 FC101, 2017 FB102, 2017 FA102, 2017 DR36, 2017 DB36, 2014 HD3, 2012 TZ79, 2006 UM, 2002 FQ4, 1999 VQ6, 99935, 391275, 374038, 363116, 265482, 234061, 226198, 217807, 18109, 175189, 154988, 154652, 10636, 5626, 5189, 4954
L04ROASTERR-1 in Romania, 1 in MPEC 2017-F171 -- 2017 FL101
K61Rokycany Obs. in the Czech Republic, 6 in MPECs 2017-F166, 2017-F168, 2017-F171, 2017-F174, 2017-F177 & 2017-F180 -- 2017 FT101, 2017 FR101, 2017 FO101, 2017 FL101, 2017 FH101, 2017 FE101
104San Marcello Pistoiese Obs. in Italy, 12 in MPECs 2017-F171, 2017-F174, 2017-F176, 2017-F177, 2017-F178, 2017-F180, 2017-F181, 2017-F182, 2017-F184, 2017-F185, 2017-F188 & 2017-F189 -- 2017 FY101, 2017 FX101, 2017 FV101, 2017 FU101, 2017 FT101, 2017 FS101, 2017 FR101, 2017 FQ101, 2017 FO101, 2017 FL101, 2017 FC101, 2017 FB102
A29Santa Maria a Monte Obs. in Italy, 1 in MPEC 2017-F171 -- 2017 FL101
B74Santa Maria de Montmagastrell Obs. in Spain, 4 in MPECs 2017-F168, 2017-F171, 2017-F177 & 2017-F178 -- 2017 FS101, 2017 FR101, 2017 FL101, 2017 FH101
204Schiaparelli Obs. in Italy, 4 in MPECs 2017-F171, 2017-F174, 2017-F180 & 2017-F185 -- 2017 FY101, 2017 FT101, 2017 FO101, 2017 FL101
033Schwarzschild Obs. in Germany, 15 in MPECs 2017-F164, 2017-F166, 2017-F176, 2017-F177, 2017-F178, 2017-F181, 2017-F182, 2017-F183, 2017-F184, 2017-F186, 2017-F189 & 2017-F197 -- 2017 FZ101, 2017 FX101, 2017 FW101, 2017 FV101, 2017 FU101, 2017 FT101, 2017 FS101, 2017 FR101, 2017 FQ101, 2017 FN102, 2017 FG101, 2017 FE101, 2017 FC101, 2017 FB102, 1997 GC32
G40%program code "%" (14) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-F189 -- 2017 AC5
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2017-F189 -- 2005 GB120
W881Tony Evans in Portugal via Slooh.com Chile Obs. in Chile, 1 in MPEC 2017-F171 -- 2017 FL101
W885M. Kumrucu-Lohmiller in Massachusetts via Slooh.com Chile Obs. in Chile, 1 in MPEC 2017-F189 -- 2017 FR90
587Sormano Obs. in Italy, 5 in MPECs 2017-F166, 2017-F171, 2017-F173, 2017-F177 & 2017-F180 -- 2017 FT101, 2017 FR101, 2017 FN101, 2017 FL101, 2017 FE101
691Spacewatch 0.9m telescope in Arizona, 14 in MPECs 2017-F168, 2017-F170, 2017-F174, 2017-F189, 2017-F193, 2017-F195 & 2017-F197 -- 2017 FW90, 2017 FQ64, 2017 FQ102, 2017 FP64, 2017 FP63, 2017 FO101, 2017 FN102, 2017 FL102, 2017 FK101, 2017 FJ1, 2017 FH63, 2017 FH101, 2017 DC109, 2016 XH2
291Spacewatch 1.8m telescope in Arizona, 8 in MPECs 2017-F170, 2017-F189, 2017-F190, 2017-F192 & 2017-F198 -- 2017 FP102, 2017 FK102, 2017 FK101, 2017 ER13, 2017 BR31, 2016 QJ44, 2014 GG17, 2012 TZ79
V78Spirit Marsh Obs. in Minnesota, 1 in MPEC 2017-F189 -- 143404
I93St. Pardon de Conques Obs. in France, 10 in MPECs 2017-F166, 2017-F171, 2017-F173, 2017-F174, 2017-F176, 2017-F177, 2017-F178, 2017-F180, 2017-F181 & 2017-F184 -- 2017 FX101, 2017 FU101, 2017 FT101, 2017 FS101, 2017 FR101, 2017 FQ101, 2017 FO101, 2017 FN101, 2017 FL101, 2017 FE101
I52Steward Obs. Mt. Lemmon Station in Arizona, 17 in MPECs 2017-F166, 2017-F167, 2017-F171, 2017-F172, 2017-F173, 2017-F174, 2017-F176, 2017-F177, 2017-F178, 2017-F179, 2017-F180, 2017-F183, 2017-F184, 2017-F185, 2017-F189, 2017-F195, 2017-F196 & 2017-F197 -- 2017 FY101, 2017 FX101, 2017 FW101, 2017 FT101, 2017 FS101, 2017 FR101, 2017 FQ101, 2017 FO101, 2017 FN102, 2017 FN101, 2017 FM102, 2017 FM101, 2017 FL102, 2017 FL101, 2017 FG101, 2017 FF101, 2017 FE101
926Tenagra II Obs. in Arizona, 32 in MPECs 2017-F166, 2017-F167, 2017-F168, 2017-F170, 2017-F171, 2017-F172, 2017-F173, 2017-F174, 2017-F175, 2017-F176, 2017-F177, 2017-F178, 2017-F179, 2017-F180, 2017-F181, 2017-F182, 2017-F183, 2017-F184, 2017-F185, 2017-F186, 2017-F189, 2017-F193, 2017-F194, 2017-F195, 2017-F196, 2017-F197, 2017-F199 & 2017-F200 -- 2017 FZ101, 2017 FY101, 2017 FX101, 2017 FW101, 2017 FV101, 2017 FU64, 2017 FU101, 2017 FT101, 2017 FS91, 2017 FS101, 2017 FR102, 2017 FR101, 2017 FQ102, 2017 FQ101, 2017 FP101, 2017 FO63, 2017 FO101, 2017 FN102, 2017 FN101, 2017 FM102, 2017 FM101, 2017 FL102, 2017 FL101, 2017 FK101, 2017 FH101, 2017 FG101, 2017 FF101, 2017 FE101, 2017 ES2, 2014 KV76, 2012 HL31, 1997 GC32
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 3 in MPEC 2017-F189 -- 2017 ED3, 2017 EB3, 2016 VS5
C42Xingming Obs. in China, 1 in MPEC 2017-F171 -- 2017 FL101
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 29 March '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 FR102JPL Sentry19042089-2117166.7e-06-5.20-5.440JPL: "Analysis based on 10 observations spanning 1.8830 days (2017-Mar-27.55657 to 2017-Mar-29.43962)." Diameter approximately 0.042 km. from mean, weighted H=24.5.
2017 FB102NEODyS19042054-211393.6e-06-6.43-7.00NEODyS: "Based on 13 optical observations (of which 0 are rejected as outliers) from 2017-03-27.552 to 2017-03-29.072."
JPL Sentry16332063-211185.1e-05-5.36-5.620JPL #2 for the day: "Analysis based on 18 observations spanning 1.5482 days (2017-Mar-27.55104 to 2017-Mar-29.09926)." Diameter approximately 0.016 km. from mean, weighted H=26.6.
2017 FE101NEODyS19042033-2117191.95e-08-4.17-4.570NEODyS #2 for the day: "Based on 53 optical observations (of which 0 are rejected as outliers) from 2017-03-25.286 to 2017-03-28.946."
JPL Sentry16332033-2104111.7e-08-4.19-4.520JPL #2 for the day: "Analysis based on 53 observations spanning 3.6604 days (2017-Mar-25.28533 to 2017-Mar-28.94568)." Diameter approximately 0.568 km. from mean, weighted H=18.9.
2017 FX90NEODyS1520209514.07e-08-8.12-8.120NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2017-03-25.347 to 2017-03-27.921."
2017 FW90JPL Sentry16332101-210341.1e-05-6.80-7.120JPL: "Analysis based on 40 observations spanning 3.9557 days (2017-Mar-25.34512 to 2017-Mar-29.30081)." Diameter approximately 0.009 km. from mean, weighted H=27.9.
NEODyS15202101-211771.69e-05-6.62-6.90NEODyS: "Based on 40 optical observations (of which 3 are rejected as outliers) from 2017-03-25.346 to 2017-03-27.911."
2017 FU64NEODyS1520R E M O V E D-
JPL Sentry16332043-206723.1e-09-7.46-7.470JPL: "Analysis based on 39 observations spanning 6.9956 days (2017-Mar-21.35113 to 2017-Mar-28.34674)." Diameter approximately 0.059 km. from mean, weighted H=23.8.
2017 FO63JPL Sentry1633210411.2e-08-6.94-6.940JPL: "Analysis based on 52 observations spanning 7.7749 days (2017-Mar-21.38988 to 2017-Mar-29.16481)." Diameter approximately 0.070 km. from mean, weighted H=23.4.
2017 FC3NEODyS19042053-205737.14e-07-5.23-5.290NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2017-03-19.326 to 2017-03-28.077."
JPL Sentry15202044-2060128.6e-07-5.10-5.420JPL: "Analysis based on 23 observations spanning 8.7511 days (2017-Mar-19.32518 to 2017-Mar-28.076303)." Diameter approximately 0.068 km. from mean, weighted H=23.5.
2017 FC1JPL Sentry1520206417.3e-07-6.70-6.700JPL: "Analysis based on 69 observations spanning 14.164 days (2017-Mar-14.415078 to 2017-Mar-28.579197)." Diameter approximately 0.021 km. from mean, weighted H=26.0.
2017 FVJPL Sentry1520R E M O V E DJPL: Risk listing removed at 1511 UTC.
NEODyS15202103-211672.78e-07-6.56-6.780NEODyS: "Based on 63 optical observations (of which 0 are rejected as outliers) from 2017-03-17.266 to 2017-03-28.247."

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 29 March '17

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

2005Grabbed MPEC 2017-F198 - 2012 TZ79 - see above
Grabbed MPEC 2017-F199 - 2012 HL31 - see above
Grabbed MPEC 2017-F200 - 2014 KV76 - see above
1941Generated Traffic Report
1904Noted that NEODyS has posted 2017 FB102 as an impact risk - see above
Noted that NEODyS has updated its 2017 FC3 risk assessment - see above
Noted that NEODyS has updated its 2017 FE101 risk assessment - see above
Noted that JPL Sentry has posted 2017 FR102 as an impact risk - see above
1633Noted that JPL Sentry has updated its 2017 FB102 risk assessment - see above
Noted that JPL Sentry has updated its 2017 FE101 risk assessment - see above
Noted that JPL Sentry has updated its 2017 FO63 risk assessment - see above
Noted that JPL Sentry has updated its 2017 FU64 risk assessment - see above
Noted that JPL Sentry has updated its 2017 FW90 risk assessment - see above
Grabbed MPEC 2017-F195 - 2017 FL102 - see above
Grabbed MPEC 2017-F196 - 2017 FM102 - see above
Grabbed MPEC 2017-F197 - 2017 FN102 - see above
1601Grabbed MPEC 2017-F190 - 2017 FK102 - see above
Grabbed MPEC 2017-F191 - 2017 FO102 - see above
Grabbed MPEC 2017-F192 - 2017 FP102 - see above
Grabbed MPEC 2017-F193 - 2017 FQ102 - see above
Grabbed MPEC 2017-F194 - 2017 FR102 - see above
1520Noted that JPL Sentry has posted 2017 FB102 as an impact risk - see above
Noted that JPL Sentry has updated its 2017 FC1 risk assessment - see above
Noted that JPL Sentry has updated its 2017 FC3 risk assessment - see above
Noted that NEODyS has posted 2017 FE101 as an impact risk - see above
Noted that NEODyS has removed 2017 FU64 as an impact risk - see above
Noted that JPL Sentry has removed 2017 FV as an impact risk - see above
Noted that NEODyS has updated its 2017 FV risk assessment - see above
Noted that NEODyS has updated its 2017 FW90 risk assessment - see above
Noted that NEODyS has updated its 2017 FX90 risk assessment - see above
Grabbed MPEC 2017-F189 - Daily Orbit Update - see above
0430Noted that JPL Sentry has posted 2017 FE101 as an impact risk - see above
0352Grabbed MPEC 2017-F164 - 2017 FC101 - see above
Grabbed MPEC 2017-F165 - 2017 FD101 - see above
Grabbed MPEC 2017-F166 - 2017 FE101 - see above
Grabbed MPEC 2017-F167 - 2017 FF101 - see above
Grabbed MPEC 2017-F168 - 2017 FH101 - see above
Grabbed MPEC 2017-F169 - 2017 FJ101 - see above
Grabbed MPEC 2017-F170 - 2017 FK101 - see above
Grabbed MPEC 2017-F171 - 2017 FL101 - see above
Grabbed MPEC 2017-F172 - 2017 FM101 - see above
Grabbed MPEC 2017-F173 - 2017 FN101 - see above
Grabbed MPEC 2017-F174 - 2017 FO101 - see above
Grabbed MPEC 2017-F175 - 2017 FP101 - see above
Grabbed MPEC 2017-F176 - 2017 FQ101 - see above
Grabbed MPEC 2017-F177 - 2017 FR101 - see above
Grabbed MPEC 2017-F178 - 2017 FS101 - see above
Grabbed MPEC 2017-F179 - 2017 FG101 - see above
Grabbed MPEC 2017-F180 - 2017 FT101 - see above
Grabbed MPEC 2017-F181 - 2017 FU101 - see above
Grabbed MPEC 2017-F182 - 2017 FV101 - see above
Grabbed MPEC 2017-F183 - 2017 FW101 - see above
Grabbed MPEC 2017-F184 - 2017 FX101 - see above
Grabbed MPEC 2017-F185 - 2017 FY101 - see above
Grabbed MPEC 2017-F186 - 2017 FZ101 - see above
Grabbed MPEC 2017-F187 - 2017 FA102 - see above
Grabbed MPEC 2017-F188 - 2017 FB102 - see above