Contents  on 1 May '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.

Radar Astrometry  on 1 May '20

Radar observation of one object

The JPL Solar System Dynamics Group Radar Astrometry database has added or updated the following small-body radar observing work:


Data update noted at 2201 UTC when the database was dated 1 May



Photometry and some astrometry is needed for upcoming radar targets. See Arecibo and Goldstone schedules.

NEOCP Activity  on 1 May '20

The MPC's NEO Confirmation Page has 58 listings

When last checked at 2358 UTC today, the Minor Planet Center's Near Earth Object discovery Confirmation Page (NEOCP) had 58 objects listed. Of these, 34 were "one nighters." The Tracking News counted a total of 83 listings on the NEOCP on this day.

New MPECs  on 1 May '20

Minor Planet Electronic Circulars

There were sixteen MPECs posted this day from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.


MPEC 2020-J16 - "22:19 UT" - Comet C/2019 Y4 (ATLAS)


MPEC 2020-J15 - "22:11 UT" - 2020 HD10


MPEC 2020-J14 - "20:36 UT" - 2016 XG18


MPEC 2020-J13 - "17:33 UT" - 2020 HC10


MPEC 2020-J12 - "17:31 UT" - 2020 HB10


MPEC 2020-J11 - "16:38 UT" - 2020 HA10


MPEC 2020-J10 - "16:35 UT" - 2020 HZ9


MPEC 2020-J09 - "14:47 UT" - 2020 HY9


MPEC 2020-J08 - "14:45 UT" - 2020 HX9


<< DOU on 1 May '20 >>  MPEC 2020-J07 - "12:02 UT" - Daily Orbit Update


MPEC 2020-J06 - "11:38 UT" - 2020 HW9


MPEC 2020-J05 - "08:05 UT" - 2020 HV9


MPEC 2020-J04 - "08:04 UT" - 2020 HU9


MPEC 2020-J03 - "08:03 UT" - 2020 HT9


MPEC 2020-J02 - "08:03 UT" - 2020 HS9


MPEC 2020-J01 - "08:01 UT" - 2020 HR9

Observers  on 1 May '20

A total of 112 observers appeared in this day's MPECs.

CodeObserver / observatory
L2729PREMOTE Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
349Ageo Obs. in Japan, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
M43Al Sadeem Obs. in Abu Dhabi, 5 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, 539940, 52768
C97Al-Fulaij Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-A
251Arecibo in Puerto Rico, 1 in radar -- 2020 HN5
H21Astronomical Research Obs. Westfield in Illinois, 10 in MPECs 2020-J01, 2020-J03, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J09, 2020-J12 & 2020-J15 -- 2020 HY9, 2020 HW9, 2020 HV9, 2020 HU9, 2020 HT9, 2020 HS5, 2020 HR9, 2020 HE3, 2020 HD10, 2020 HB10
T05ATLAS Haleakala in Hawaii, 30 in MPEC 2020-J07 -- 2020 HM7, 2020 HF1, 2020 HB6, 2020 GD2, 2010 JJ3, 2010 EC135, 2002 XQ40, 2001 GS2, 99935, 86667, 85628, 68278, 66251, 54401, 388838, 36183, 349063, 19764, 190166, 186822, 175189, 169675, 142555, 137064, 136923, 11066, 8014, 6050, 4954, 1685
T08ATLAS Mauna Loa in Hawaii, 27 in MPECs 2020-J07 & 2020-J16 -- 2020 HU2, 2020 HN5, 2020 HL7, 2020 GF3, 2020 FB6, C/2019 Y4-E, 2019 XG1, 2016 HP6, 2010 EC135, 68350, 539940, 522684, 425450, 388945, 35107, 318050, 30825, 276274, 237551, 184990, 18172, 115052, 11405, 8566, 7088, 6047, 1864
069Baldone Obs. in Latvia, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
C77Bernezzo Obs. in Italy, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
L54Berthelot Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
C86Blanes Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
G20Brignoles Obs., 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
B96Brixiis Obs. in Belgium, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
K47BSCR Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
215Buchloe Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C
Z36Cancelada Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
Z46Cardiff Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
B20Carmelita Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
I72Carpe Noctem Obs. in Spain, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
703Catalina Sky Survey (CSS) in Arizona, 23 in MPECs 2020-J06, 2020-J07 & 2020-J12 -- 2020 HW9, 2020 HB6, 2020 HB10, 2020 GF3, 2019 XG1, 2018 GX4, 2010 EC135, 86667, 85628, 68278, 66251, 539940, 388945, 388838, 374188, 190166, 184990, 145656, 142555, 137064, 136923, 136618, 7753
V06Catalina Sky Survey Kuiper Telescope (CSS-Kuiper) in Arizona, 5 in MPECs 2020-J01, 2020-J03, 2020-J05, 2020-J09 & 2020-J15 -- 2020 HY9, 2020 HV9, 2020 HT9, 2020 HR9, 2020 HD10
K51Celado Obs. in Italy, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
A77Chante-Perdrix Obs. in France, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
970Chelmsford Obs. in England, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
G10Clavier Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
Z99Clixby Obs. in England, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
178Collonges Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-B
B50Corner Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
N55Corona Borealis Obs. in Tibet, 1 in MPEC 2020-J16 -- C/2019 Y4-A
Z39Costa Teguise Obs. in the Canary Islands, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
P66Deokheung Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
K87Dettelbach Vineyard Obs. in Germany, 3 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-A
Z40El Manzanillo Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
F65Faulkes Telescope North in Hawaii, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-A
F652Lothar Kurtze in Germany via Faulkes Telescope North in Hawaii, 1 in MPEC 2020-J06 -- 2020 HW9
K56Foligno Obs. in Italy, 1 in MPEC 2020-J16 -- C/2019 Y4-A
G26Fushan Obs. in China, 1 in MPEC 2020-J16 -- C/2019 Y4-E
372Geisei Obs. in Japan, 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B
203GiaGa Obs. in Italy, 2 in MPECs 2020-J06 & 2020-J12 -- 2020 HW9, 2020 HB10
Z30Glyn Marsh Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
J77Golden Hill Obs. in England, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
K73Gravina Obs. in Italy, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
J95Great Shefford Obs. in England, 6 in MPECs 2020-J15 & 2020-J16 -- 2020 HD10, C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
P87Hirao Obs., 3 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A, 52768
C43Hoyerswerda Obs. in Germany, 1 in MPEC 2020-J16 -- C/2019 Y4-B
H06iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
H06*Rolando Ligustri in Italy via iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
H06>program code ">" (39) via iTelescope Obs. Mayhill in New Mexico, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
G19Kant Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
K85Kelmis Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
585Kiev Comet Station in Ukraine, 1 in MPEC 2020-J16 -- C/2019 Y4-C
1862program code 2 via Kitab Obs., 1 in MPEC 2020-J07 -- 2020 HS7
246KLENOT in the Czech Republic, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
L12Koksijde Obs., 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
C401program code 1 via Kuban State Univ. Obs. in Russia, 1 in MPEC 2020-J07 -- 388945
D95Kurihara Obs. in Japan, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
938Linhaceira Obs. in Portugal, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
K38M57 Obs. in Italy, 1 in MPEC 2020-J16 -- C/2019 Y4-A
C10Maisoncelles Obs. in France, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
232Masquefa Obs. in Spain, 2 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-B
152Moletai Obs. in Lithuania, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
213Montcabre Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
B06Montseny Obs. in Spain, 4 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A, 52768
39MPC code 39, 1 in MPEC 2020-J16 -- C/2019 Y4-C
G22MPC code G22, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
474Mt. John Obs. in New Zealand, 2 in MPECs 2020-J02 & 2020-J08 -- 2020 HX9, 2020 HS9
G96Mt. Lemmon Survey (MLS) in Arizona, 30 in MPECs 2020-J01, 2020-J02, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J09, 2020-J10, 2020-J11, 2020-J12 & 2020-J15 -- 2020 HZ9, 2020 HY9, 2020 HY3, 2020 HX5, 2020 HW9, 2020 HV9, 2020 HU9, 2020 HS9, 2020 HR9, 2020 HL3, 2020 HD10, 2020 HB10, 2020 HA10, 2020 GN3, 2020 GD2, 2016 GT220, 2015 HB10, 2011 WC, 2010 JJ3, 2010 FC6, 2000 HO40, 99935, 515446, 394783, 329275, 275976, 159857, 141053, 9950, 4954
K74Muensterschwarzach Obs. in Germany, 1 in MPEC 2020-J16 -- C/2019 Y4-B
C82Nastro Verde Obs. in Italy, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
C47Nonndorf Obs. in Austria, 1 in MPEC 2020-J16 -- C/2019 Y4-A
J69North Obs. in England, 1 in MPEC 2020-J16 -- C/2019 Y4-A
Z80Northolt Branch Obs. in England, 6 in MPECs 2020-J07 & 2020-J16 -- 2020 HK3, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A, 539940
G34Oberfrauendorf Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B
C23Olmen Obs. in Belgium, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
F51Pan-STARRS 1 (PS1) in Hawaii, 19 in MPECs 2020-J01, 2020-J03, 2020-J04, 2020-J07, 2020-J08, 2020-J13 & 2020-J16 -- 2020 HY8, 2020 HX9, 2020 HU9, 2020 HT9, 2020 HS8, 2020 HR9, 2020 HQ3, 2020 HF4, 2020 HC10, C/2019 Y4-A, 2014 JS54, 2014 HO4, 2010 JK33, 2010 FC6, 2000 CR101, 500094, 494706, 433992, 333555
F52Pan-STARRS 2 (PS2) in Hawaii, 5 in MPECs 2020-J02, 2020-J03, 2020-J05 & 2020-J07 -- 2020 HV9, 2020 HT9, 2020 HS9, 436324, 184990
K63Pascoli Obs. in Italy, 2 in MPECs 2020-J06 & 2020-J12 -- 2020 HW9, 2020 HB10
K19PASTIS Obs. in France, 1 in MPEC 2020-J16 -- C/2019 Y4-A
B49Paus Obs. in Spain, 1 in MPEC 2020-J12 -- 2020 HB10
H45Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 9 in MPECs 2020-J07 & 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-A, 2015 TX143, 388838, 35107, 163243, 138847
658Plaskett 1.8m Telescope in British Columbia, 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-B, C/2019 Y4-A
6581Dave Balam via Plaskett 1.8m Telescope in British Columbia, 1 in MPEC 2020-J16 -- C/2019 Y4-A
L04ROASTERR-1 in Romania, 1 in MPEC 2020-J16 -- C/2019 Y4-B
L40Saarbruecken Rastpfuhl Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B
233San Vito Obs. in Italy, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
H36Sandlot Obs. in Kansas, 8 in MPECs 2020-J02, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J12, 2020-J13 & 2020-J15 -- 2020 HW9, 2020 HV9, 2020 HU9, 2020 HS9, 2020 HD10, 2020 HC10, 2020 HB9, 2020 HB10
B70Sant Celoni Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
B56Sant Pere Obs. in Spain, 4 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
C95SATINO-1 in France, 1 in MPEC 2020-J07 -- 2020 BX12
204Schiaparelli Obs. in Italy, 6 in MPECs 2020-J06, 2020-J12 & 2020-J16 -- 2020 HW9, 2020 HB10, C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
K24Schmelz Obs. in Germany, 2 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-B
K14Sencelles Obs. in Spain, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
G402program code 2 via Slooh.com Canary Islands Obs. in the Canary Islands, 5 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
G403Tony Evans in Portugal via Slooh.com Canary Islands Obs. in the Canary Islands, 2 in MPEC 2020-J07 -- 2020 HB6, 2020 FB6
Y00SONEAR in Brazil, 1 in MPEC 2020-J07 -- 20826
587Sormano Obs. in Italy, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
L39Spica Obs., 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
I93St. Pardon de Conques Obs. in France, 1 in MPEC 2020-J12 -- 2020 HB10
K21St. Saturnin les Avignon Obs. in France, 3 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
C36Starry Wanderer Obs. in Belarus, 2 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C
I52Steward Obs. Mt. Lemmon Station in Arizona, 20 in MPECs 2020-J01, 2020-J02, 2020-J04, 2020-J05, 2020-J06, 2020-J07, 2020-J08, 2020-J10, 2020-J11, 2020-J12, 2020-J13 & 2020-J15 -- 2020 HZ9, 2020 HX9, 2020 HW9, 2020 HV9, 2020 HU9, 2020 HT3, 2020 HS9, 2020 HR9, 2020 HR7, 2020 HQ7, 2020 HP7, 2020 HL6, 2020 HG5, 2020 HD10, 2020 HC10, 2020 HB10, 2020 HA10, 2020 GY2, 2020 FD3, 2019 WB6
Q23Sukagawa Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
I81Tarbatness Obs. in Scotland, 4 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B, C/2019 Y4-A
858Tebbutt Obs. in New Mexico, 2 in MPECs 2020-J06 & 2020-J12 -- 2020 HW9, 2020 HB10
C35Terrassa Obs. in Spain, 3 in MPEC 2020-J16 -- C/2019 Y4-E, C/2019 Y4-C, C/2019 Y4-B
W33Transit Dreams Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
V261program code 1 via UAS-ISON Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-C
T12UH/Tholen NEO Follow-Up 2.24m Telescope in Hawaii, 2 in MPECs 2020-J07 & 2020-J14 -- 2018 JN, 2016 XG18
Z55Uraniborg Obs., 1 in MPEC 2020-J16 -- C/2019 Y4-A
L01Visnjan Obs. in Croatia, 3 in MPECs 2020-J06, 2020-J12 & 2020-J15 -- 2020 HW9, 2020 HD10, 2020 HB10
G23Vulpecula Obs., 3 in MPEC 2020-J16 -- C/2019 Y4-D, C/2019 Y4-C, C/2019 Y4-B
Z92West Park Obs. in England, 1 in MPEC 2020-J16 -- C/2019 Y4-B
I15Wishing Star Obs. in Rhode Island, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
N88Xingming Obs. #3, 2 in MPEC 2020-J16 -- C/2019 Y4-B, C/2019 Y4-A
Z57Zuben Obs., 2 in MPEC 2020-J16 -- C/2019 Y4-C, C/2019 Y4-A
I41Zwicky Transient Facility (ZTF) in southern California, 3 in MPEC 2020-J07 -- 2019 LF6, 318050, 276274
For a list of all participating observatories that have Web addresses, see A/CC's Observatory Links page.

Impact Risk Monitoring  on 1 May '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 HY8NEODyS1900207311.0e-08-6.64-6.640NEODyS: "Based on 31 optical observations (of which 0 are rejected as outliers) from 2020-04-27.388 to 2020-04-30.516."
JPL Sentry16012056-207327.9121e-08-5.72-5.740JPL: Computed at 06:29 today Pacific time based on 31 observations spanning 3.1279 days (2020-Apr-27.38722 to 2020-Apr-30.515145). Diameter approximately 0.095 km. from weighted mean H=22.76.
2020 HM7NEODyS1900208811.87e-08-8.31-8.310NEODyS: "Based on 52 optical observations (of which 0 are rejected as outliers) from 2020-04-25.559 to 2020-04-30.419."
2020 HL6NEODyS19002069-2115105.2e-07-8.02-8.270NEODyS: "Based on 31 optical observations (of which 1 are rejected as outliers) from 2020-04-19.446 to 2020-05-01.413."
JPL Sentry16012069-211537.568e-07-7.89-8.100JPL: Computed at 06:34 today Pacific time based on 30 observations spanning 11.967 days (2020-Apr-19.44533 to 2020-May-01.41195). Diameter approximately 0.008 km. from weighted mean H=28.02.
2020 HK3NEODyS1900207314.0e-09-7.74-7.740NEODyS: "Based on 83 optical observations (of which 0 are rejected as outliers) from 2020-04-19.547 to 2020-04-30.921."
2020 GY2NEODyS19002093-211729.07e-08-6.45-6.450NEODyS: "Based on 92 optical observations (of which 1 are rejected as outliers) from 2020-04-15.350 to 2020-05-01.440."
JPL Sentry16012093-209315.320e-07-5.66-5.660JPL: Computed at 06:29 today Pacific time based on 92 observations spanning 16.090 days (2020-Apr-15.34915 to 2020-May-01.43888). Diameter approximately 0.064 km. from weighted mean H=23.63.
2018 JNNEODyS19002100-211861.11e-05-5.37-5.440NEODyS: "Based on 147 optical observations (of which 1 are rejected as outliers) from 2018-05-05.424 to 2018-06-21.449."
JPL Sentry16012100-212041.16215e-05-5.39-5.530JPL: Computed at 06:31 today Pacific time based on 147 observations spanning 47.025 days (2018-May-05.42349 to 2018-Jun-21.448319). Diameter approximately 0.033 km. from weighted mean H=25.09.
2016 AZ193JPL Sentry16012020-21144922.1894676e-06-6.31-7.220JPL: Computed at 14:28 April 6th of 2017 Pacific time based on 9 observations spanning .15930 days (2016-Jan-03.25638 to 2016-Jan-03.41568). Diameter approximately 0.016 km. from weighted mean H=26.62.

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 May '20

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

0351 5/2Grabbed MPEC 2020-J16 - Comet C/2019 Y4 (ATLAS) - see above
2301Grabbed MPEC 2020-J15 - 2020 HD10 - see above
2201Noted Radar Astrometry database update - see above
2100Grabbed MPEC 2020-J14 - 2016 XG18 - see above
1900Noted that NEODyS has updated its 2018 JN risk assessment - see above
Noted that NEODyS has updated its 2020 GY2 risk assessment - see above
Noted that NEODyS has reposted 2020 HK3 as an impact risk - see above
Noted that NEODyS has updated its 2020 HL6 risk assessment - see above
Noted that NEODyS has updated its 2020 HM7 risk assessment - see above
Noted that NEODyS has updated its 2020 HY8 risk assessment - see above
1735Grabbed MPEC 2020-J12 - 2020 HB10 - see above
Grabbed MPEC 2020-J13 - 2020 HC10 - see above
1700Grabbed MPEC 2020-J10 - 2020 HZ9 - see above
Grabbed MPEC 2020-J11 - 2020 HA10 - see above
1601Noted that JPL Sentry has updated its 2016 AZ193 risk assessment - see above
Noted that JPL Sentry has updated its 2018 JN risk assessment - see above
Noted that JPL Sentry has updated its 2020 GY2 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HL6 risk assessment - see above
Noted that JPL Sentry has updated its 2020 HY8 risk assessment - see above
Grabbed MPEC 2020-J07 - Daily Orbit Update - see above
1600Grabbed MPEC 2020-J01 - 2020 HR9 - see above
Grabbed MPEC 2020-J02 - 2020 HS9 - see above
Grabbed MPEC 2020-J03 - 2020 HT9 - see above
Grabbed MPEC 2020-J04 - 2020 HU9 - see above
Grabbed MPEC 2020-J05 - 2020 HV9 - see above
Grabbed MPEC 2020-J06 - 2020 HW9 - see above
Grabbed MPEC 2020-J08 - 2020 HX9 - see above
Grabbed MPEC 2020-J09 - 2020 HY9 - see above