Contents  on 1 February '20

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 February '20

Report not compiled yet

Our regular Traffic Report has not yet been compiled for today. Click on the left arrow immediately above for yesterday's report, or check out our new traffic report page now in development.

NEOCP Activity  on 1 February '20

The MPC's NEO Confirmation Page has 80 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 80 objects listed. Of these, 49 were "one nighters." So far The Tracking News has counted a total of 119 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 February '20

Minor Planet Electronic Circulars

As of last check at 2358 UTC, there have been 24 MPECs posted today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-C24 - "22:41 UT" - 2020 CA


MPEC 2020-C23 - "22:35 UT" - 2020 BD15


MPEC 2020-C22 - "22:33 UT" - 2020 BC15


MPEC 2020-C21 - "22:30 UT" - 2020 BB15


MPEC 2020-C20 - "22:26 UT" - 2020 BA15


MPEC 2020-C19 - "21:11 UT" - 2020 BZ14


MPEC 2020-C18 - "21:09 UT" - 2020 BY14


MPEC 2020-C17 - "21:04 UT" - 2020 BX14


MPEC 2020-C16 - "21:01 UT" - 2020 BW14


MPEC 2020-C15 - "20:47 UT" - 2020 BV14


MPEC 2020-C14 - "20:44 UT" - 2020 BU14


MPEC 2020-C13 - "20:43 UT" - 2020 BT14


MPEC 2020-C12 - "18:26 UT" - 2020 BP14


MPEC 2020-C11 - "17:15 UT" - 2020 BN14


MPEC 2020-C10 - "16:59 UT" - 2020 BM14


MPEC 2020-C09 - "16:57 UT" - 2020 BL14


MPEC 2020-C08 - "16:43 UT" - 2020 BK14


MPEC 2020-C07 - "16:40 UT" - 2020 BJ14


MPEC 2020-C06 - "16:02 UT" - 2020 BH14


MPEC 2020-C05 - "15:00 UT" - 2015 BK


<< DOU on 1 February '20 >>  MPEC 2020-C04 - "12:25 UT" - Daily Orbit Update


MPEC 2020-C03 - "05:12 UT" - 2020 BF14


MPEC 2020-C02 - "02:48 UT" - 2015 DJ155


MPEC 2020-C01 - "02:32 UT" - 2020 BD14

Observers  on 1 February '20

A total of 53 observers appear in today's MPECs.

CodeObserver / observatory
T05ATLAS Haleakala in Hawaii, 14 in MPECs 2020-C04, 2020-C12, 2020-C16 & 2020-C17 -- 2020 BX14, 2020 BW14, 2020 BP14, 2013 BA74, 2011 CT4, 438452, 374188, 34613, 163373, 10145, 5626, 4450, 1864, 1627
T08ATLAS Mauna Loa in Hawaii, 21 in MPECs 2020-C04, 2020-C07 & 2020-C20 -- 2020 BX12, 2020 BJ14, 2020 BA15, 2019 UO, 2017 XD, 2016 LE9, 2006 DY, 96315, 66008, 65690, 504074, 437316, 349063, 329340, 144411, 143947, 143527, 138883, 138847, 8566, 3691
I47Auger Obs. in Argentina, 1 in MPEC 2020-C17 -- 2020 BX14
C77Bernezzo Obs. in Italy, 3 in MPECs 2020-C02, 2020-C07 & 2020-C19 -- 2020 BZ14, 2020 BJ14, 2015 DJ155
Z84Calar Alto Schmidt in Spain, 3 in MPECs 2020-C07, 2020-C19 & 2020-C20 -- 2020 BZ14, 2020 BJ14, 2020 BA15
703Catalina Sky Survey (CSS) in Arizona, 32 in MPECs 2020-C02, 2020-C04, 2020-C07, 2020-C19 & 2020-C20 -- 2020 BZ14, 2020 BV1, 2020 BJ14, 2020 BH11, 2020 BA15, 2019 XG1, 2019 WR2, 2015 OX78, 2015 DJ155, 2015 DE200, 2012 BE124, 2009 AH16, 2004 MD, 2002 EY2, 1996 AE2, 90367, 89830, 52768, 52762, 511523, 483878, 459386, 416591, 214088, 18172, 162080, 137199, 137064, 136993, 103067, 9400, 6047
V06Catalina Sky Survey Kuiper Telescope in Arizona, 1 in MPEC 2020-C08 -- 2020 BK14
807|Robert Holmes in Illinois via Cerro Tololo Inter-American Obs. (CTIO) in Chile, 21 in MPECs 2020-C01, 2020-C04, 2020-C18, 2020-C21, 2020-C22 & 2020-C23 -- 2020 BY14, 2020 BH2, 2020 BD15, 2020 BD14, 2020 BC15, 2020 BB15, 2020 BA6, 2019 YZ3, 2019 YS3, 2019 YQ3, 2019 YO6, 2019 YM6, 2019 YG3, 2019 YG1, 2019 YD1, 2019 XG3, 2019 WG4, 2019 WE5, 2019 UJ2, 2019 UA14, 2019 NE1
Z99Clixby Obs. in England, 2 in MPECs 2020-C12 & 2020-C16 -- 2020 BW14, 2020 BP14
958Dax Obs. in France, 4 in MPECs 2020-C02, 2020-C04, 2020-C07 & 2020-C19 -- 2020 BZ14, 2020 BJ14, 2017 BP32, 2015 DJ155
734Farpoint Obs. in Kansas, 12 in MPECs 2020-C04, 2020-C07, 2020-C09, 2020-C12, 2020-C13, 2020-C19 & 2020-C20 -- 2020 BZ14, 2020 BT14, 2020 BP14, 2020 BL14, 2020 BJ14, 2020 BE2, 2020 BA15, 2019 YE4, 2019 BO1, 2017 BP32, 2015 DE200, 2011 CT4
X31Galilei Obs., 1 in MPEC 2020-C17 -- 2020 BX14
E89Geyserland Obs. in New Zealand, 2 in MPEC 2020-C04 -- 5626, 1627
203GiaGa Obs. in Italy, 1 in MPEC 2020-C12 -- 2020 BP14
J95Great Shefford Obs. in England, 2 in MPECs 2020-C12 & 2020-C16 -- 2020 BW14, 2020 BP14
H06|Hidetaka Sato in Japan via iTelescope Obs. Mayhill in New Mexico, 1 in MPEC 2020-C16 -- 2020 BW14
Q62[M. Suzuki in Japan via iTelescope Obs. Siding Spring in New South Wales, 1 in MPEC 2020-C17 -- 2020 BX14
695^Spacewatch via Kitt Peak Natl. Obs. (KPNO) in Arizona, 5 in MPEC 2020-C04 -- 2020 BY11, 2020 BY1, 2020 BK3, 2020 AY1, 2019 YW2
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-C04 -- 163373
V37LCO McDonald Obs. in Texas, 1 in MPEC 2020-C13 -- 2020 BT14
Q63LCO Siding Spring A in New South Wales, 2 in MPECs 2020-C17 & 2020-C22 -- 2020 BX14, 2020 BC15
K92LCO Sutherland B in South Africa, 1 in MPEC 2020-C04 -- 2020 BX12
130Lumezzane Obs. in Italy, 11 in MPEC 2020-C04 -- 2020 BV, 2020 BE9, 2019 XN1, 2019 XG1, 2019 WB6, 2015 DE200, 2013 BA74, 2012 BE124, 458732, 331876, 281365
K38M57 Obs. in Italy, 2 in MPECs 2020-C07 & 2020-C19 -- 2020 BZ14, 2020 BJ14
H01Magdalena Ridge Obs. (MRO) in New Mexico, 6 in MPECs 2020-C08, 2020-C09, 2020-C11, 2020-C15, 2020-C18 & 2020-C24 -- 2020 CA, 2020 BY14, 2020 BV14, 2020 BN14, 2020 BL14, 2020 BK14
Z22MASTER IAC Obs. in the Canary Islands, 1 in MPEC 2020-C04 -- 137199
K95MASTER-II Sutherland in South Africa, 1 in MPEC 2020-C04 -- 4954
568^R. Wainscoat on Mauna Kea in Hawaii, 5 in MPECs 2020-C01, 2020-C03, 2020-C14, 2020-C21 & 2020-C22 -- 2020 BU14, 2020 BF14, 2020 BD14, 2020 BC15, 2020 BB15
118Modra Obs. in Slovakia, 1 in MPEC 2020-C16 -- 2020 BW14
474Mt. John Obs. in New Zealand, 11 in MPECs 2020-C03, 2020-C04 & 2020-C17 -- 2020 BY6, 2020 BX14, 2020 BU1, 2020 BO5, 2020 BM7, 2020 BH2, 2020 BF14, 2020 BE2, 2020 BC9, 2020 BA6, 2020 BA4
G96Mt. Lemmon Survey (MLS) in Arizona, 44 in MPECs 2020-C04, 2020-C09, 2020-C11, 2020-C15, 2020-C18 & 2020-C24 -- 2020 CA, 2020 BZ11, 2020 BY14, 2020 BW8, 2020 BV14, 2020 BV1, 2020 BS2, 2020 BN14, 2020 BL14, 2020 BK6, 2020 BJ6, 2020 BJ4, 2020 BC6, 2020 BC11, 2020 AR2, 2019 YP5, 2019 YM6, 2019 WB6, 2019 PY, 2017 DO34, 2016 QD, 2016 FG15, 2015 MN66, 2014 YV43, 2014 YU43, 2014 AD17, 2013 CA88, 2012 VN7, 2008 CZ21, 2006 WU29, 512245, 503880, 492143, 412976, 397471, 360192, 353947, 267221, 162038, 154652, 138175, 13651, 1916, 719
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-C19 -- 2020 BZ14
J69North Obs. in England, 2 in MPECs 2020-C13 & 2020-C19 -- 2020 BZ14, 2020 BT14
F51Pan-STARRS 1 (PS1) in Hawaii, 17 in MPECs 2020-C01, 2020-C03, 2020-C04, 2020-C06, 2020-C08, 2020-C10, 2020-C13, 2020-C14, 2020-C21, 2020-C22 & 2020-C23 -- 2020 BU14, 2020 BT14, 2020 BR5, 2020 BM14, 2020 BK14, 2020 BH14, 2020 BF14, 2020 BD15, 2020 BD14, 2020 BC15, 2020 BB15, 2016 CB194, 2000 BO28, 1999 DB2, 425450, 39796, 358453
F52Pan-STARRS 2 (PS2) in Hawaii, 12 in MPECs 2020-C01, 2020-C04, 2020-C09, 2020-C13 & 2020-C15 -- 2020 BV14, 2020 BT14, 2020 BL14, 2020 BD14, 2017 BP32, 2008 XP, 2004 MD, 2000 WO148, 231792, 203015, 163081, 137925
654Pomona College Table Mtn. Obs. in southern California, 1 in MPEC 2020-C04 -- 2013 BA74
104San Marcello Pistoiese Obs. in Italy, 1 in MPEC 2020-C16 -- 2020 BW14
H36Sandlot Obs. in Kansas, 2 in MPECs 2020-C07 & 2020-C22 -- 2020 BJ14, 2020 BC15
B74Santa Maria de Montmagastrell Obs. in Spain, 2 in MPECs 2020-C12 & 2020-C16 -- 2020 BW14, 2020 BP14
C95SATINO-1 in France, 7 in MPECs 2020-C02, 2020-C04, 2020-C07, 2020-C12, 2020-C13, 2020-C16 & 2020-C19 -- 2020 BZ14, 2020 BW14, 2020 BT14, 2020 BP14, 2020 BJ14, 2015 DJ155, 2004 MD
204Schiaparelli Obs. in Italy, 28 in MPECs 2020-C02, 2020-C04, 2020-C07, 2020-C10, 2020-C12, 2020-C13, 2020-C16 & 2020-C19 -- 2020 BZ14, 2020 BY4, 2020 BW14, 2020 BU3, 2020 BT3, 2020 BT14, 2020 BS1, 2020 BP14, 2020 BM14, 2020 BK3, 2020 BJ14, 2020 AV2, 2019 XW2, 2019 XO2, 2019 XO1, 2019 XC1, 2019 WT3, 2019 PR2, 2016 BC14, 2015 OX78, 2015 DJ155, 2014 NF64, 2014 AD17, 2012 BE124, 2012 BD124, 2011 CT4, 2009 AH16, 1996 AE2
033Schwarzschild Obs. in Germany, 14 in MPECs 2020-C02, 2020-C04, 2020-C07, 2020-C08, 2020-C10, 2020-C12, 2020-C13, 2020-C16, 2020-C19, 2020-C20 & 2020-C24 -- 2020 CA, 2020 BZ14, 2020 BW14, 2020 BT14, 2020 BP14, 2020 BM14, 2020 BK14, 2020 BJ14, 2020 BA15, 2019 BO1, 2017 BP32, 2016 WE1, 2015 DJ155, 2011 CT4
G40*program code "*" (19) via Slooh.com Canary Islands Obs. in the Canary Islands, 1 in MPEC 2020-C07 -- 2020 BJ14
587Sormano Obs. in Italy, 7 in MPECs 2020-C02, 2020-C07, 2020-C12, 2020-C13, 2020-C16, 2020-C19 & 2020-C20 -- 2020 BZ14, 2020 BW14, 2020 BT14, 2020 BP14, 2020 BJ14, 2020 BA15, 2015 DJ155
691Spacewatch 0.9m telescope in Arizona, 17 in MPECs 2020-C04 & 2020-C06 -- 2020 BW7, 2020 BQ7, 2020 BK7, 2020 BK10, 2020 BJ3, 2020 BH14, 2020 BF5, 2020 BA4, 2020 BA10, 2019 YR6, 2019 YH4, 2019 XY2, 2019 WF3, 2019 VN6, 2017 WP28, 2011 UC292, 2011 CT4
291Spacewatch 1.8m telescope in Arizona, 12 in MPECs 2020-C04 & 2020-C06 -- 2020 BZ6, 2020 BX7, 2020 BW5, 2020 BR2, 2020 BQ1, 2020 BO3, 2020 BH14, 2020 BA13, 2020 AO3, 2020 AM1, 2019 MS3, 2015 BC92
W34Squirrel Valley Obs. in North Carolina, 1 in MPEC 2020-C07 -- 2020 BJ14
I52Steward Obs. Mt. Lemmon Station in Arizona, 36 in MPECs 2020-C02, 2020-C04, 2020-C07, 2020-C09, 2020-C10, 2020-C11, 2020-C12, 2020-C15, 2020-C16, 2020-C19, 2020-C20, 2020-C21, 2020-C22, 2020-C23 & 2020-C24 -- 2020 CA, 2020 BZ14, 2020 BW7, 2020 BW2, 2020 BW14, 2020 BW, 2020 BV14, 2020 BV, 2020 BS2, 2020 BS11, 2020 BR7, 2020 BP14, 2020 BP13, 2020 BP12, 2020 BO9, 2020 BN14, 2020 BN12, 2020 BM14, 2020 BL7, 2020 BL14, 2020 BL13, 2020 BL11, 2020 BJ6, 2020 BJ14, 2020 BJ13, 2020 BG6, 2020 BF10, 2020 BD7, 2020 BD15, 2020 BC15, 2020 BC10, 2020 BB15, 2020 BA15, 2020 BA10, 2020 AD3, 2015 DJ155
673!Jana Pittichova Chesley via Table Mtn. Obs. in southern California, 4 in MPECs 2020-C10, 2020-C12, 2020-C16 & 2020-C23 -- 2020 BW14, 2020 BP14, 2020 BM14, 2020 BD15
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 11 in MPECs 2020-C04, 2020-C05, 2020-C12 & 2020-C21 -- 2020 BX13, 2020 BW5, 2020 BQ12, 2020 BP14, 2020 BP12, 2020 BL8, 2020 BB15, 2020 BA13, 2019 BE5, 2018 PA20, 2015 BK
L01Visnjan Obs., 5 in MPECs 2020-C10, 2020-C12, 2020-C16, 2020-C18 & 2020-C23 -- 2020 BY14, 2020 BW14, 2020 BP14, 2020 BM14, 2020 BD15
C51WISE in Earth polar orbit, 2 in MPEC 2020-C04 -- 2006 XF2, 10115
I41Zwicky Transient Facility (ZTF) in southern California, 19 in MPEC 2020-C04 -- 2020 BU12, 2020 BN12, 2019 YG7, 2009 AH16, 2005 SQ, 1996 AE2, 539940, 52768, 511243, 409342, 374188, 34613, 331792, 248926, 163373, 137925, 12923, 1916, 1866
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 February '20

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
2020 BA15JPL Sentry23312051-205331.4723e-07-7.76-8.070JPL: Computed at 15:30 today Pacific time based on 26 observations spanning 1.7729 days (2020-Jan-30.463929 to 2020-Feb-01.23685). Diameter approximately 0.011 km. from weighted mean H=27.37.
2020 BW14NEODyS23002025-2118234.03e-07-2.70-2.850NEODyS: "Based on 65 optical observations (of which 1 are rejected as outliers) from 2020-01-28.247 to 2020-02-01.766."
JPL Sentry22002025-2118327.037275e-07-2.40-2.580JPL: Computed at 13:58 today Pacific time based on 65 observations spanning 4.5191 days (2020-Jan-28.246027 to 2020-Feb-01.7651). Diameter approximately 0.726 km. from weighted mean H=18.35.
2020 BV14NEODyS23002102-211252.1e-08-7.16-7.460NEODyS: "Based on 25 optical observations (of which 0 are rejected as outliers) from 2020-01-29.424 to 2020-02-01.465."
JPL Sentry22002102-210231.5793e-07-6.23-6.520JPL: Computed at 13:58 today Pacific time based on 25 observations spanning 3.0412 days (2020-Jan-29.42317 to 2020-Feb-01.46436). Diameter approximately 0.081 km. from weighted mean H=23.11.
2020 BJ14JPL Sentry18032082-208722.08552e-05-4.41-4.410JPL: Computed at 09:57 today Pacific time based on 56 observations spanning 1.8062 days (2020-Jan-30.399864 to 2020-Feb-01.20602). Diameter approximately 0.050 km. from weighted mean H=24.16.
2020 BA14NEODyS1610205512.91e-08-6.14-6.140NEODyS: "Based on 18 optical observations (of which 0 are rejected as outliers) from 2020-01-26.547 to 2020-01-30.464."
2020 BA13NEODyS23002088-211062.55e-07-8.70-9.280NEODyS: "Based on 27 optical observations (of which 1 are rejected as outliers) from 2020-01-28.326 to 2020-01-31.544."
JPL Sentry16102068-210591.035683e-06-8.01-8.580JPL: Computed at 07:18 today Pacific time based on 26 observations spanning 3.2091 days (2020-Jan-28.32485 to 2020-Jan-31.533913). Diameter approximately 0.006 km. from weighted mean H=28.81.
2020 BQ12NEODyS2300R E M O V E DNEODyS #2 for the day
JPL Sentry16102093-209317.488e-08-7.07-7.070JPL: Computed at 07:06 today Pacific time based on 33 observations spanning 3.0579 days (2020-Jan-28.235094 to 2020-Jan-31.292945). Diameter approximately 0.048 km. from weighted mean H=24.27.
2020 BP12JPL Sentry16102109-210911.308e-08-8.54-8.540JPL: Computed at 07:43 today Pacific time based on 69 observations spanning 3.2109 days (2020-Jan-28.32786 to 2020-Jan-31.53878). Diameter approximately 0.025 km. from weighted mean H=25.64.
2020 BY11NEODyS23002114-211843.76e-08-9.05-9.270NEODyS: "Based on 23 optical observations (of which 0 are rejected as outliers) from 2020-01-26.412 to 2020-02-01.369."
JPL Sentry16102118-211818.298e-09-9.71-9.710JPL: Computed at 07:08 today Pacific time based on 23 observations spanning 5.9569 days (2020-Jan-26.41131 to 2020-Feb-01.36818). Diameter approximately 0.009 km. from weighted mean H=27.83.
2020 BW5NEODyS23002046-2115212.09e-05-5.28-5.350NEODyS #2 for the day: "Based on 46 optical observations (of which 0 are rejected as outliers) from 2020-01-22.517 to 2020-02-01.441."
JPL Sentry16102046-2110112.0813803e-05-5.26-5.320JPL: Computed at 07:07 today Pacific time based on 46 observations spanning 9.9241 days (2020-Jan-22.516545 to 2020-Feb-01.44062). Diameter approximately 0.017 km. from weighted mean H=26.46.
2020 BY4NEODyS23002055-2118193.42e-06-5.85-6.370NEODyS: "Based on 32 optical observations (of which 3 are rejected as outliers) from 2020-01-20.414 to 2020-01-26.321."
JPL Sentry16102055-2117138.356951e-06-5.41-5.790JPL: Computed at 07:04 today Pacific time based on 29 observations spanning 5.9069 days (2020-Jan-20.412927 to 2020-Jan-26.31983). Diameter approximately 0.020 km. from weighted mean H=26.14.
2020 BK3NEODyS23002091-2107177.83e-04-4.23-4.230NEODyS: "Based on 84 optical observations (of which 0 are rejected as outliers) from 2020-01-22.396 to 2020-02-01.214."
JPL Sentry16102091-2113130.00067561087-4.29-4.290JPL: Computed at 07:06 today Pacific time based on 84 observations spanning 9.8179 days (2020-Jan-22.395303 to 2020-Feb-01.21324). Diameter approximately 0.014 km. from weighted mean H=26.91.
2020 BY1NEODyS2300R E M O V E D-
JPL Sentry16102049-204919.124e-07-6.30-6.300JPL: Computed at 06:41 today Pacific time based on 75 observations spanning 11.958 days (2020-Jan-20.460859 to 2020-Feb-01.41873). Diameter approximately 0.018 km. from weighted mean H=26.35.
2020 AY1NEODyS2300210317.14e-08-7.64-7.640NEODyS #2 for the day: "Based on 122 optical observations (of which 4 are rejected as outliers) from 2020-01-05.242 to 2020-02-01.177."
JPL Sentry16102103-210311.568e-07-7.29-7.290JPL: Computed at 07:57 today Pacific time based on 121 observations spanning 26.935 days (2020-Jan-05.24158 to 2020-Feb-01.17628). Diameter approximately 0.031 km. from weighted mean H=25.19.
2019 YW2NEODyS23002113-211722.7e-10-9.41-9.470NEODyS: "Based on 143 optical observations (of which 8 are rejected as outliers) from 2019-12-24.514 to 2020-02-01.312."
2011 CF66JPL Sentry16102020-21178291.41831956e-05-6.03-7.220JPL: Computed at 03:11 April 7th of 2017 Pacific time based on 11 observations spanning .17761 days (2011-Feb-13.33976 to 2011-Feb-13.51737). Diameter approximately 0.009 km. from weighted mean H=27.83.

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 February '20

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

2331Noted that JPL Sentry has posted 2020 BA15 as an impact risk - see above
2300Noted that NEODyS has updated its 2019 YW2 risk assessment - see above
Noted that NEODyS has updated its 2020 AY1 risk assessment - see above
Noted that NEODyS has updated its 2020 BA13 risk assessment - see above
Noted that NEODyS has updated its 2020 BK3 risk assessment - see above
Noted that NEODyS has removed 2020 BQ12 as an impact risk - see above
Noted that NEODyS has posted 2020 BV14 as an impact risk - see above
Noted that NEODyS has posted 2020 BW14 as an impact risk - see above
Noted that NEODyS has updated its 2020 BW5 risk assessment - see above
Noted that NEODyS has removed 2020 BY1 as an impact risk - see above
Noted that NEODyS has updated its 2020 BY11 risk assessment - see above
Noted that NEODyS has updated its 2020 BY4 risk assessment - see above
Grabbed MPEC 2020-C21 - 2020 BB15 - see above
Grabbed MPEC 2020-C22 - 2020 BC15 - see above
Grabbed MPEC 2020-C23 - 2020 BD15 - see above
Grabbed MPEC 2020-C24 - 2020 CA - see above
2230Grabbed MPEC 2020-C20 - 2020 BA15 - see above
2200Noted that JPL Sentry has posted 2020 BV14 as an impact risk - see above
Noted that JPL Sentry has posted 2020 BW14 as an impact risk - see above
2139Grabbed MPEC 2020-C16 - 2020 BW14 - see above
Grabbed MPEC 2020-C17 - 2020 BX14 - see above
Grabbed MPEC 2020-C18 - 2020 BY14 - see above
Grabbed MPEC 2020-C19 - 2020 BZ14 - see above
2100Grabbed MPEC 2020-C13 - 2020 BT14 - see above
Grabbed MPEC 2020-C14 - 2020 BU14 - see above
Grabbed MPEC 2020-C15 - 2020 BV14 - see above
1831Grabbed MPEC 2020-C12 - 2020 BP14 - see above
1803Noted that JPL Sentry has posted 2020 BJ14 as an impact risk - see above
1730Grabbed MPEC 2020-C11 - 2020 BN14 - see above
1701Grabbed MPEC 2020-C06 - 2020 BH14 - see above
Grabbed MPEC 2020-C07 - 2020 BJ14 - see above
Grabbed MPEC 2020-C08 - 2020 BK14 - see above
Grabbed MPEC 2020-C09 - 2020 BL14 - see above
Grabbed MPEC 2020-C10 - 2020 BM14 - see above
1610Noted that JPL Sentry has updated its 2011 CF66 risk assessment - see above
Noted that JPL Sentry has reposted 2020 AY1 as an impact risk - see above
Noted that NEODyS has updated its 2020 AY1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BA13 risk assessment - see above
Noted that NEODyS has posted 2020 BA14 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 BK3 risk assessment - see above
Noted that JPL Sentry has reposted 2020 BP12 as an impact risk - see above
Noted that JPL Sentry has updated its 2020 BQ12 risk assessment - see above
Noted that NEODyS has updated its 2020 BQ12 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BW5 risk assessment - see above
Noted that NEODyS has updated its 2020 BW5 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BY1 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BY11 risk assessment - see above
Noted that JPL Sentry has updated its 2020 BY4 risk assessment - see above
Grabbed MPEC 2020-C04 - Daily Orbit Update - see above
Grabbed MPEC 2020-C05 - 2015 BK - see above
0550Grabbed MPEC 2020-C01 - 2020 BD14 - see above
Grabbed MPEC 2020-C02 - 2015 DJ155 - see above
Grabbed MPEC 2020-C03 - 2020 BF14 - see above