MPEC 2021-P05 : COMET C/2021 O3 (PANSTARRS)
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M.P.E.C. 2021-P05 Issued 2021 August 1, 23:49 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Division F of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET C/2021 O3 (PANSTARRS)
R. Weryk reports the discovery of a comet in images taken by Pan-STARRS 1
(F51) on July 26 UT. Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
X02 2021-07-30 E. Guido 8" 15x240s
L81 2021-08-01 E. Bryssinck 8" 12x120s
Observations:
CK21O030* C2021 07 26.48098523 27 10.791+27 47 30.19 19.87iUEP005F51
CK21O030 C2021 07 26.49180623 27 10.501+27 47 31.94 20.07iUEP005F51
CK21O030 C2021 07 26.50264423 27 10.209+27 47 33.76 19.95iUEP005F51
CK21O030 C2021 07 26.60836923 27 07.400+27 47 48.39 19.67GVEP005F51
CK21O030 C2021 07 26.60901423 27 07.395+27 47 48.56 20.26GVEP005F51
CK21O030 KC2021 07 28.40407 23 26 19.66 +27 51 47.7 19.7 RqEP005H36
CK21O030 KC2021 07 28.41410 23 26 19.39 +27 51 48.2 20.0 RqEP005H36
CK21O030 KC2021 07 28.90153 23 26 05.93 +27 52 47.7 19.8 RqEP005L27
CK21O030 KC2021 07 28.91202 23 26 05.66 +27 52 49.0 19.8 RqEP005L27
CK21O030 KC2021 07 28.92288 23 26 05.36 +27 52 50.4 19.7 RqEP005L27
CK21O030 KC2021 07 28.94821 23 26 04.62 +27 52 53.5 19.9 RqEP005L27
CK21O030 KC2021 07 28.96996 23 26 03.99 +27 52 56.5 19.7 RqEP005L27
CK21O030 KC2021 07 28.98248 23 26 03.59 +27 52 58.0 19.0 RqEP005104
CK21O030 KC2021 07 28.99520 23 26 03.26 +27 53 00.0 19.8 RqEP005L27
CK21O030 KC2021 07 29.00578 23 26 02.92 +27 53 01.2 19.2 RqEP005104
CK21O030 KC2021 07 29.04225 23 26 01.88 +27 53 05.8 19.7 RqEP005L27
CK21O030 KC2021 07 29.05766923 26 01.43 +27 53 06.5 20.0 GVEP005J95
CK21O030 KC2021 07 29.09036623 26 00.47 +27 53 10.6 19.5 GVEP005J95
CK21O030 KC2021 07 29.26574 23 25 55.57 +27 53 32.3 19.6 RqEP005H36
CK21O030 KC2021 07 29.28514 23 25 55.03 +27 53 34.7 19.5 RqEP005H36
CK21O030 1C2021 07 29.85023 23 25 38.62 +27 54 39.5 20.9 VVEP005033
CK21O030 1C2021 07 29.85069 23 25 38.64 +27 54 39.4 20.8 VVEP005033
CK21O030 1C2021 07 29.85115 23 25 38.63 +27 54 39.3 20.7 VVEP005033
CK21O030 KC2021 07 29.85466123 25 38.53 +27 54 40.5 19.5 GVEP005587
CK21O030 KC2021 07 29.89742323 25 37.28 +27 54 45.0 19.1 GVEP005587
CK21O030 C2021 07 29.91325223 25 36.79 +27 54 46.9 19.2 GVEP005587
CK21O030 KV2021 07 30.00010 23 25 34.26 +27 54 56.6 20.5 GVEP005247
CK21O030 v2021 07 30.00010 1 009.1183 +44.7717 493 EP005247
CK21O030 KV2021 07 30.01535 23 25 33.94 +27 55 00.0 20.5 GVEP005247
CK21O030 v2021 07 30.01535 1 009.1183 +44.7717 493 EP005247
CK21O030 1C2021 07 30.09332 23 25 31.40 +27 55 07.4 20.2 VVEP005033
CK21O030 1C2021 07 30.09378 23 25 31.38 +27 55 07.6 20.1 VVEP005033
CK21O030 1C2021 07 30.09423 23 25 31.40 +27 55 07.8 20.1 VVEP005033
CK21O030 C2021 07 30.11191 23 25 30.88 +27 55 10.6 18.9 GVEP005Z17
CK21O030 C2021 07 30.11903 23 25 30.70 +27 55 11.6 18.8 GVEP005Z17
CK21O030 KC2021 07 30.13772623 25 30.14 +27 55 14.8 19.6 GXEP005Y00
CK21O030 KC2021 07 30.14159723 25 30.06 +27 55 16.2 19.9 GXEP005Y00
CK21O030 KC2021 07 30.14546923 25 29.90 +27 55 16.1 19.7 GXEP005Y00
CK21O030 KC2021 07 30.30420 23 25 25.12 +27 55 33.7 19.7 GVEP005X02
CK21O030 KC2021 07 30.33267 23 25 24.29 +27 55 36.6 18.8 GVEP005X02
CK21O030 KC2021 07 30.89898 23 25 07.34 +27 56 34.4 19.4 RqEP005L27
CK21O030 KC2021 07 30.92030 23 25 06.68 +27 56 36.9 19.2 RqEP005L27
CK21O030 KC2021 07 30.94610 23 25 05.88 +27 56 39.8 19.2 RqEP005L27
CK21O030 5C2021 07 31.46319 23 24 49.80 +27 57 33.4 VEP005U69
CK21O030 5C2021 07 31.46965 23 24 49.61 +27 57 33.9 19.7 GVEP005U69
CK21O030 1C2021 07 31.84766 23 24 37.89 +27 58 10.1 20.5 VVEP005033
CK21O030 1C2021 07 31.84806 23 24 37.89 +27 58 10.0 20.5 VVEP005033
CK21O030 1C2021 07 31.84846 23 24 37.87 +27 58 10.1 20.5 VVEP005033
CK21O030 1C2021 07 31.84912 23 24 37.81 +27 58 10.6 20.7 VVEP005033
CK21O030 KC2021 07 31.97288 23 24 33.90 +27 58 24.9 19.1 GVEP005L81
CK21O030 KC2021 07 31.98678 23 24 33.40 +27 58 26.2 VEP005L81
CK21O030 KC2021 08 01.04661 23 24 31.47 +27 58 32.3 19.6 GVEP005L81
CK21O030 KC2021 08 01.05642 23 24 31.11 +27 58 33.0 19.9 GVEP005L81
CK21O030 C2021 08 01.07356 23 24 30.68 +27 58 32.5 18.4 GVEP005Z21
CK21O030 C2021 08 01.08206 23 24 30.41 +27 58 33.8 18.5 GVEP005Z21
CK21O030 KC2021 08 01.62368 23 24 13.02 +27 59 22.3 19.3 VqEP005Q21
CK21O030 KC2021 08 01.62892 23 24 12.84 +27 59 23.5 19.5 VqEP005Q21
CK21O030 KC2021 08 01.63942 23 24 12.44 +27 59 24.7 19.2 VqEP005Q21
CK21O030 C2021 08 01.64776 23 24 12.23 +27 59 24.6 20.1 VrEP005P93
CK21O030 C2021 08 01.64972 23 24 12.03 +27 59 25.0 20.1 VrEP005P93
CK21O030 C2021 08 01.65170 23 24 12.01 +27 59 25.3 19.9 VrEP005P93
CK21O030 1C2021 08 01.85847 23 24 05.32 +27 59 42.7 21.3 VVEP005033
CK21O030 1C2021 08 01.85905 23 24 05.29 +27 59 42.9 20.7 VVEP005033
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, U. Laux, F. Ludwig, B. Stecklum. Measurer B. Stecklum. 1.34-m
f/3 Schmidt + CCD.
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurers
P. Bacci, L. Tesi, G. Fagioli. 0.60-m reflector + CCD.
247 Roving Observer. Observer A. De Pieri. 0.23-m f/6.7 Schmidt-Cassegrain +
CCD.
587 Sormano. Observers S. Barni, E. Colzani. Measurer P. Sicoli. 0.5-m
f/6.8 reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, I.
Smith, K. Chambers. Measurers K. Chambers, S. Chastel, T. de Boer, J.
Fairlamb, H. Gao, M. Huber, C.-C. Lin, E. Magnier, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m reflector + CCD.
J95 Great Shefford. Observer P. Birtwhistle. 0.41-m f/6.3 Schmidt-Cassegrain
+ CCD.
L27 29PREMOTE Observatory, Dauban. Observer J.-F. Soulier. 0.25-m f/3.5
Newtonian reflector + CCD.
L81 Skygems Namibia Remote Observatory. Observers L. Buzzi, L. Demetz, E.
Bryssinck. Measurers A. Aletti, L. Buzzi, G. Galli, E. Bryssinck. 0.51-m
f/6.7 astrograph + CCD.
P93 Space Tracking and Communications Center, JAXA. Observers K. Nishiyama,
S. Urakawa. 1.0-m f/3.0 reflector + CCD.
Q21 Southern Utsunomiya. Observer H. Nohara. 0.4-m f/3.8 astrograph + CCD.
U69 iTelescope SRO Observatory, Auberry. Observer H. Sato. 0.61-m f/6.5
astrograph + CCD.
X02 Telescope Live, El Sauce. Observers E. Guido, M. Rocchetto, E. Bryssinck,
M. Fulle, G. Milani, C. Nassef, G. Savini, A. Valvasori. Measurer E.
Guido. 0.61-m f/6.5 astrograph + CCD.
Y00 SONEAR Observatory, Oliveira. Observers C. Jacques, E. Pimentel, J.
Barros. Measurer C. Jacques. 0.45-m f/2.9 reflector + CCD.
Z17 Tenerife-LCO Aqawan A #2. Observer A. Hale. 0.40-m f/10 Schmidt-
Cassegrain + CCD.
Z21 Tenerife-LCO Aqawan A #1. Observer A. Hale. 0.40-m f/10 Schmidt-
Cassegrain + CCD.
Orbital elements:
C/2021 O3 (PANSTARRS)
T 2022 Apr. 20.49806 TT Rudenko
q 0.2888063 (2000.0) P Q
Peri. 299.88349 -0.56671024 -0.81340873
Node 189.02692 +0.64769077 -0.53821683
e 1.0 Incl. 56.72241 -0.50925059 +0.22065558
From 61 observations 2021 July 26-Aug. 1.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2021 07 02 23 32 16.6 +26 19 39 4.3828 4.5771 94.6 12.8 20.3
...
2021 07 17 23 30 22.2 +27 19 55 4.0046 4.4106 107.0 12.7 20.0
...
2021 07 25 23 27 47.1 +27 43 52 3.8092 4.3205 113.8 12.4 19.8
...
2021 07 31 23 25 04.1 +27 56 46 3.6671 4.2524 119.0 12.1 19.6
2021 08 01 23 24 33.0 +27 58 26 3.6439 4.2411 119.8 12.0 19.6
2021 08 02 23 24 00.6 +27 59 56 3.6208 4.2296 120.7 11.9 19.6
...
2021 08 08 23 20 21.9 +28 05 32 3.4856 4.1609 125.8 11.4 19.4
...
2021 08 16 23 14 25.6 +28 02 32 3.3153 4.0683 132.5 10.6 19.2
...
2021 08 31 23 00 16.9 +27 17 39 3.0339 3.8922 143.5 8.9 18.8
M. P. C. Staff (C) Copyright 2021 MPC M.P.E.C. 2021-P05
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