MPEC 2023-R197 : COMET C/2023 R1 (PANSTARRS)
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M.P.E.C. 2023-R197 Issued 2023 September 14, 19:52 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets, routine data on comets and natural satellites,
and occasional editorial announcements. 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/2023 R1 (PANSTARRS)
R. Weryk reports the discovery of a comet in four 45-second w-band survey
images taken on Sep. 7 (UT) by Pan-STARRS 2 (F52), noting a condensed 0".5
coma. Prediscovery positions were reported back to July 2023. Additional
reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
F52 2023-07-30 R. Weryk 0".3 4x45s
246 2023-09-11 M. Tichy 4"
W62 2023-09-14 J. Maikner 5" 15" 215 90x60s
Observations:
CK23R010 C2023 07 29.61476901 18 25.209+31 04 35.79 21.59GVER197F52
CK23R010 C2023 07 30.57419801 18 09.441+31 06 37.66 20.92wXER197F52
CK23R010 C2023 07 30.58503601 18 09.257+31 06 39.14 21.02wXER197F52
CK23R010 C2023 07 30.59602301 18 09.069+31 06 40.50 20.96wXER197F52
CK23R010 C2023 07 30.60695901 18 08.871+31 06 41.91 20.92wXER197F52
CK23R010 C2023 08 03.60802401 16 57.194+31 14 43.86 21.76GVER197F51
CK23R010 C2023 08 04.61677901 16 37.658+31 16 38.62 20.65GVER197F51
CK23R010 C2023 08 04.62920601 16 37.411+31 16 40.46 22.06GVER197F52
CK23R010 C2023 08 19.62116301 10 35.795+31 38 45.94 21.47GVER197F52
CK23R010 C2023 08 23.62995101 08 36.724+31 42 21.51 19.43GVER197F51
CK23R010 C2023 08 24.49287801 08 09.976+31 42 58.49 20.16GVER197F52
CK23R010 C2023 08 24.50453701 08 09.609+31 42 59.07 20.28GVER197F52
CK23R010 C2023 08 28.63661201 05 55.398+31 45 14.85 21.63GVER197F52
CK23R010 C2023 08 29.63296101 05 21.673+31 45 36.28 20.57GVER197F51
CK23R010* C2023 09 07.57001500 59 56.436+31 45 19.49 20.17wXER197F52
CK23R010 C2023 09 07.58095100 59 56.011+31 45 19.20 20.32wXER197F52
CK23R010 C2023 09 07.59183200 59 55.582+31 45 18.87 20.55wXER197F52
CK23R010 C2023 09 07.60272700 59 55.153+31 45 18.75 19.79wXER197F52
CK23R010 1C2023 09 07.91475 00 59 43.17 +31 45 10.4 20.7 VXER197033
CK23R010 1C2023 09 07.91533 00 59 43.14 +31 45 10.2 20.7 VXER197033
CK23R010 1C2023 09 07.91590 00 59 43.13 +31 45 10.3 20.7 VXER197033
CK23R010 1C2023 09 07.91661 00 59 43.10 +31 45 10.3 20.7 VXER197033
CK23R010 KC2023 09 08.10993 00 59 35.54 +31 45 05.6 VER197204
CK23R010 KC2023 09 08.11287800 59 35.46 +31 45 05.6 20.5 GVER197L01
CK23R010 KC2023 09 08.11435100 59 35.39 +31 45 04.9 20.6 GVER197L01
CK23R010 KC2023 09 08.11645500 59 35.30 +31 45 05.0 20.5 GVER197L01
CK23R010 KC2023 09 08.12794 00 59 34.84 +31 45 05.1 20.2 GVER197204
CK23R010 0C2023 09 08.26998 00 59 29.36 +31 45 01.5 VER197U94
CK23R010 0C2023 09 08.27662 00 59 29.12 +31 45 01.7 19.4 GVER197U94
CK23R010 1C2023 09 08.34901600 59 26.309+31 44 58.83 LER197658
CK23R010 1C2023 09 08.35347200 59 26.125+31 44 58.66 LER197658
CK23R010 1C2023 09 08.35794000 59 25.943+31 44 58.57 LER197658
CK23R010 1C2023 09 08.36240700 59 25.765+31 44 58.38 LER197658
CK23R010 1C2023 09 08.36686300 59 25.584+31 44 58.37 LER197658
CK23R010 C2023 09 08.41772800 59 23.648+31 44 57.53 20.16wXER197F52
CK23R010 C2023 09 08.42916400 59 23.190+31 44 57.18 20.17wXER197F52
CK23R010 C2023 09 08.44062300 59 22.744+31 44 56.93 20.14wXER197F52
CK23R010 C2023 09 08.45209700 59 22.288+31 44 56.57 20.26wXER197F52
CK23R010 1C2023 09 08.86417800 59 06.280+31 44 43.70 VER197246
CK23R010 1C2023 09 08.86661000 59 05.820+31 44 44.00 VER197246
CK23R010 1C2023 09 08.86700900 59 05.730+31 44 42.30 VER197246
CK23R010 KB2023 09 08.91919 00 59 04.070+31 44 42.47 19.6 GXER197L38
CK23R010 KC2023 09 08.92569600 59 03.76 +31 44 42.0 20.3 GXER197595
CK23R010 KB2023 09 08.92872 00 59 03.667+31 44 42.04 19.2 GXER197L38
CK23R010 KC2023 09 08.94937000 59 02.86 +31 44 41.0 19.9 GXER197595
CK23R010 KC2023 09 08.97266600 59 01.93 +31 44 40.3 19.8 GXER197595
CK23R010 KC2023 09 08.98506900 59 01.48 +31 44 40.6 19.7 GXER197C95
CK23R010 KB2023 09 08.99033900 59 01.217+31 44 40.02 20.0 GXER197K74
CK23R010 KB2023 09 09.00435400 59 00.648+31 44 39.37 20.2 GXER197K74
CK23R010 KC2023 09 09.01502900 59 00.23 +31 44 39.7 20.1 GXER197C95
CK23R010 KB2023 09 09.01836800 59 00.137+31 44 39.08 20.2 GXER197K74
CK23R010 KC2023 09 09.04078 00 58 59.22 +31 44 39.2 20.2 GVER197104
CK23R010 KC2023 09 09.05780 00 58 58.54 +31 44 38.4 VER197104
CK23R010 KC2023 09 09.85382 00 58 27.25 +31 44 11.4 20.0 RqER197C10
CK23R010 KC2023 09 09.87755 00 58 26.27 +31 44 10.8 20.2 V ER197A77
CK23R010 1C2023 09 09.88477900 58 26.050+31 44 09.10 VER197246
CK23R010 1C2023 09 09.88546200 58 26.010+31 44 09.70 VER197246
CK23R010 KC2023 09 09.90431 00 58 25.23 +31 44 09.6 20.0 RqER197C10
CK23R010 KC2023 09 09.90982 00 58 25.01 +31 44 09.6 20.3 V ER197A77
CK23R010 KC2023 09 09.94210 00 58 23.71 +31 44 08.5 19.8 V ER197A77
CK23R010 KC2023 09 09.95512 00 58 23.21 +31 44 07.9 19.9 RqER197C10
CK23R010 KC2023 09 10.00437 00 58 21.24 +31 44 06.1 19.9 RqER197C10
CK23R010 KC2023 09 10.79559400 57 49.63 +31 43 35.2 20.1 ER197N51
CK23R010 KC2023 09 10.80067100 57 49.43 +31 43 35.1 20.1 ER197N51
CK23R010 KC2023 09 10.80567200 57 49.22 +31 43 34.9 20.2 ER197N51
CK23R010 1C2023 09 10.85852800 57 47.210+31 43 33.60 20.1 GVER197246
CK23R010 1C2023 09 10.85921200 57 47.190+31 43 32.90 20.0 GVER197246
CK23R010 KC2023 09 10.89032 00 57 45.91 +31 43 32.9 20.1 GVER197C82
CK23R010 KC2023 09 10.91437 00 57 45.03 +31 43 31.6 19.8 GVER197C82
CK23R010 KB2023 09 10.97261500 57 42.634+31 43 28.67 19.9 GXER197K74
CK23R010 KB2023 09 10.98312400 57 42.204+31 43 28.16 20.0 GXER197K74
CK23R010 KB2023 09 10.99363200 57 41.777+31 43 27.55 19.7 GXER197K74
CK23R010 KB2023 09 11.00414200 57 41.398+31 43 27.59 19.8 GXER197K74
CK23R010 KB2023 09 11.01465300 57 40.932+31 43 26.76 19.9 GXER197K74
CK23R010 KC2023 09 11.03844 00 57 39.92 +31 43 25.3 19.8 GXER197G02
CK23R010 KC2023 09 11.04423 00 57 39.73 +31 43 25.4 19.7 GXER197G02
CK23R010 KC2023 09 11.05002 00 57 39.47 +31 43 25.4 19.8 GXER197G02
CK23R010 KC2023 09 11.06790800 57 38.79 +31 43 24.9 20.0 GUER197L06
CK23R010 KC2023 09 11.08422500 57 38.13 +31 43 24.0 19.9 GUER197L06
CK23R010 KC2023 09 11.10054200 57 37.47 +31 43 23.1 19.8 GUER197L06
CK23R010 1C2023 09 11.85035800 57 07.440+31 42 50.70 VER197246
CK23R010 KC2023 09 11.85090 00 57 07.36 +31 42 49.9 19.3 GVER197C82
CK23R010 1C2023 09 11.85192700 57 07.390+31 42 50.40 VER197246
CK23R010 1C2023 09 11.85261100 57 07.260+31 42 50.40 VER197246
CK23R010 KC2023 09 11.87318 00 57 06.43 +31 42 49.7 19.5 GVER197C82
CK23R010 KC2023 09 13.97864 00 55 40.30 +31 41 00.8 19.2 GVER197C23
CK23R010 KC2023 09 14.00576 00 55 39.15 +31 40 59.0 19.3 GVER197C23
CK23R010 KC2023 09 14.07539 00 55 36.28 +31 40 55.0 19.3 GVER197C23
CK23R010 KC2023 09 14.12042500 55 34.45 +31 40 52.8 20.1 GXER197W62
CK23R010 KC2023 09 14.14167700 55 33.56 +31 40 51.5 19.8 GXER197W62
CK23R010 KC2023 09 14.16293400 55 32.70 +31 40 50.0 19.8 GXER197W62
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hoegner, F. Ludwig, M. Hartmann, B. Stecklum. Measurer B. Stecklum.
1.34-m f/3 Schmidt + CCD.
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurer P.
Bacci. 0.60-m f/4.0 reflector + CCD.
204 Schiaparelli Observatory. Observers L. Buzzi, G. Galli. 0.84-m f/3.5
reflector + CCD.
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha, M. Janda, M.
Honkova. Measurer M. Tichy. 1.06-m f/2.7 Reflector + 2048x2048 CCD.
595 Farra d'Isonzo. Observer E. Pettarin. 0.61-m f/4.5 reflector + CCD.
658 National Research Council of Canada. Observers D. D. Balam, C. E. Spratt.
Measurers D. D. Balam, D. W. E. Green. 1.82-m Reflector + CCD.
A77 Observatoire Chante-Perdrix, Dauban. Observer F. Kugel. 0.40-m f/2.8
reflector + CCD.
C10 Maisoncelles. Observer J.-F. Soulier. 0.30-m f/3.8 Newtonian reflector +
CCD.
C23 Olmen. Observer A. Diepvens. Refractor + CCD.
C82 Osservatorio Astronomico Nastro Verde, Sorrento. Observer N. Ruocco.
0.35-m f/6.3 Schmidt-Cassegrain + CCD.
C95 SATINO Remote Observatory, Haute Provence. Observer J. Jahn. 0.60-m
f/3.2 Newtonian reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M.
Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien +
CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, P.
Minguez, A. Schultz, I. Smith. Measurers S. Chastel, J. Fairlamb, M.
Huber, Y. Ramanjooloo, R. Wainscoat, R. Weryk, K. Chambers, T. de Boer, J.
Bulger, H. Gao, C.-C. Lin, T. Lowe, E. Magnier, P. Minguez, A. Schultz, I.
Smith. 1.8-m Ritchey-Chretien + CCD.
G02 KYSUCE Observatory, Kysucke Nove Mesto. Observer M. Urbanik. 0.40-m
f/6.8 Corrected Dall-Kirkham + CCD.
K74 Muensterschwarzach Observatory, Schwarzach. Observer C. Gerhard. 0.30-m
f/3.75 reflector + CMO.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea. Observer G. Ventre. 0.36m
Schmidt Cassegrain + CCD.
L38 Gartensternwarte Schafsweide, Sehlde. Observer A. Opitz. 0.35-m f/5.2
Newton + CMO.
N51 GROWTH India Telescope, IAO, Hanle. Observers R. Kumar, Y. Wagh, R.
Sharma, V. Swain, K. Angail, V. Bhalerao, G. C. Anupama, S. Barway.
Measurers R. Kumar, Y. Wagh. 0.70-m f/6.5 Corrected Dall-Kirkham + CCD.
U94 iTelescope Observatory, Beryl Junction. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
W62 Comet Hunter Observatory2, New Ringgold. Observer J. Maikner. 0.30-m
f/3.8 Riccardi-Honders + CCD.
Orbital elements:
C/2023 R1 (PANSTARRS)
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2026 Apr. 17.83229 TT Rudenko
q 3.5672340 (2000.0) P Q
z +0.0017602 Peri. 144.54168 +0.06681540 -0.88905632
+/-0.0015371 Node 62.52721 -0.99197709 -0.01036848
e 0.9937211 Incl. 149.30550 -0.10731802 -0.45768040
From 91 observations 2023 July 29-Sept. 14, mean residual 0".3.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 08 15 01 12 41.5 +31 33 20 8.2246 8.6354 110.7 6.3 19.9
...
2023 08 30 01 05 09.2 +31 45 43 7.9225 8.5407 124.9 5.6 19.8
...
2023 09 07 01 00 18.4 +31 45 32 7.7785 8.4901 132.3 5.0 19.7
...
2023 09 13 00 56 20.5 +31 41 54 7.6802 8.4521 137.7 4.6 19.7
2023 09 14 00 55 39.4 +31 41 00 7.6647 8.4458 138.6 4.5 19.7
2023 09 15 00 54 57.9 +31 40 00 7.6495 8.4395 139.5 4.4 19.7
...
2023 09 21 00 50 41.5 +31 32 08 7.5639 8.4015 144.5 4.0 19.6
...
2023 09 29 00 44 44.0 +31 16 36 7.4664 8.3508 150.2 3.4 19.6
...
2023 10 14 00 33 11.9 +30 32 27 7.3382 8.2556 155.4 2.9 19.5
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-R197
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