MPEC 2023-S264 : COMET P/2023 S1
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M.P.E.C. 2023-S264 Issued 2023 September 29, 21:36 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 P/2023 S1
Y. Ramanjooloo reports the discovery of a comet in three 45-second w-band
survey images taken by Pan-STARRS 2 (F52) on Sep. 20 UT, noting a condensed
2".1 coma and a straight 11".5 tail at position angle 223-237 deg. Prediscovery
posiions were reported back to mid-September. Additional reports of cometary
features are as follows:
OC Date Reporter Coma Tail PA Exposures
G96 2023-09-15 D. Rankin 8"
G00 2023-09-20 M. Jaeger 10" 11" 260 25x50s
U94 2023-09-21 H. Sato 8" 8x120s
W62 2023-09-21 J. Maikner 20" 35" 240 117x60s
U94 2023-09-25 T. Prystavski 5".9 10".5 229 5x120s
Observations:
PK23S010 C2023 09 15.38802 02 30 19.94 +26 11 41.2 19.5 GVES264G96
PK23S010 C2023 09 15.39321 02 30 19.84 +26 11 41.7 19.7 GVES264G96
PK23S010 C2023 09 17.47702602 29 49.481+26 15 45.75 20.38GVES264F52
PK23S010 C2023 09 17.48725802 29 49.300+26 15 46.93 20.38GVES264F52
PK23S010 C2023 09 17.49751402 29 49.144+26 15 48.00 20.32GVES264F52
PK23S010 C2023 09 17.50784102 29 48.948+26 15 49.20 20.25GVES264F52
PK23S010 C2023 09 19.45747202 29 16.013+26 19 12.30 20.48GVES264F51
PK23S010 C2023 09 19.47127702 29 15.740+26 19 13.55 20.24GVES264F51
PK23S010 C2023 09 19.48507202 29 15.496+26 19 15.10 20.53GVES264F51
PK23S010 C2023 09 19.49894502 29 15.221+26 19 16.42 20.52GVES264F51
PK23S010 B2023 09 19.99232 02 29 06.20 +26 20 02.4 19.4 GXES264G03
PK23S010 B2023 09 20.00733 02 29 05.87 +26 20 04.0 18.4 GXES264G03
PK23S010 B2023 09 20.02244 02 29 05.51 +26 20 05.1 18.5 GXES264G03
PK23S010* C2023 09 20.60443802 28 54.430+26 21 00.35 20.36wXES264F52
PK23S010 C2023 09 20.61228802 28 54.258+26 21 01.29 20.57wXES264F52
PK23S010 C2023 09 20.62011502 28 54.116+26 21 01.87 20.53wXES264F52
PK23S010 KC2023 09 20.89132 02 28 49.01 +26 21 25.0 19.8 GXES264G02
PK23S010 KC2023 09 20.90799 02 28 48.70 +26 21 26.1 19.9 GXES264G02
PK23S010 KC2023 09 20.92559 02 28 48.34 +26 21 28.0 19.8 GXES264G02
PK23S010 KC2023 09 20.95884 02 28 47.65 +26 21 30.2 19.7 GVES264G00
PK23S010 KC2023 09 20.96582 02 28 47.48 +26 21 30.8 19.0 GVES264G00
PK23S010 KC2023 09 20.97279 02 28 47.36 +26 21 31.3 19.4 GVES264G00
PK23S010 KC2023 09 21.15589102 28 43.82 +26 21 48.2 19.8 GXES264W62
PK23S010 KC2023 09 21.17963502 28 43.32 +26 21 50.3 19.6 GXES264W62
PK23S010 KC2023 09 21.20302102 28 42.83 +26 21 52.5 19.7 GXES264W62
PK23S010 0C2023 09 21.31873 02 28 40.52 +26 22 02.9 VES264U94
PK23S010 0C2023 09 21.32482 02 28 40.39 +26 22 03.2 19.5 GVES264U94
PK23S010 KB2023 09 22.89317 02 28 07.53 +26 24 09.7 20.0 GXES264M45
PK23S010 KB2023 09 22.90636 02 28 07.23 +26 24 10.5 19.8 GXES264M45
PK23S010 KB2023 09 22.91844 02 28 06.95 +26 24 11.4 19.7 GXES264M45
PK23S010 KC2023 09 22.92684602 28 06.79 +26 24 11.2 19.4 GXES264C95
PK23S010 KC2023 09 22.95078302 28 06.20 +26 24 13.6 19.0 GXES264C95
PK23S010 KC2023 09 22.97468902 28 05.63 +26 24 15.7 19.1 GXES264C95
PK23S010 KC2023 09 23.87419 02 27 45.57 +26 25 20.2 19.1 RqES264C10
PK23S010 KC2023 09 23.92570 02 27 44.44 +26 25 24.3 19.3 RqES264C10
PK23S010 KB2023 09 23.96447 02 27 43.50 +26 25 27.6 19.3 GXES264M45
PK23S010 KB2023 09 23.97326 02 27 43.28 +26 25 28.1 19.5 GXES264M45
PK23S010 KC2023 09 23.97620 02 27 43.22 +26 25 27.6 19.2 RqES264C10
PK23S010 KB2023 09 23.98178 02 27 43.04 +26 25 29.1 19.2 GXES264M45
PK23S010 KB2023 09 24.01137902 27 42.39 +26 25 30.6 19.2 GVES264I93
PK23S010 KB2023 09 24.02210402 27 42.14 +26 25 30.9 19.4 GVES264I93
PK23S010 KB2023 09 24.03246902 27 41.90 +26 25 31.9 19.6 GVES264I93
PK23S010 KC2023 09 24.14581802 27 39.11 +26 25 39.4 19.2 GVES264L06
PK23S010 KC2023 09 24.15706002 27 38.85 +26 25 40.3 19.4 GVES264L06
PK23S010 KC2023 09 24.16619302 27 38.66 +26 25 40.4 19.1 GVES264L06
PK23S010 KC2023 09 24.59985902 27 28.692+26 26 10.50 19.5 VqES264Q21
PK23S010 KC2023 09 24.61035102 27 28.471+26 26 10.82 20.0 VqES264Q21
PK23S010 KB2023 09 24.82093902 27 23.490+26 26 23.04 19.4 GXES264B72
PK23S010 KB2023 09 24.83262502 27 23.182+26 26 22.70 19.0 GXES264B72
PK23S010 KC2023 09 24.91899002 27 21.11 +26 26 29.2 18.9 GVES264203
PK23S010 KC2023 09 24.94051302 27 20.56 +26 26 30.3 18.8 GVES264203
PK23S010 KB2023 09 25.02339 02 27 18.499+26 26 35.88 19.0 GXES264L38
PK23S010 KB2023 09 25.03041 02 27 18.314+26 26 36.64 19.0 GXES264L38
PK23S010 :C2023 09 25.04132 02 27 18.16 +26 26 37.7 19.1 VqES264950
PK23S010 :C2023 09 25.06971 02 27 17.44 +26 26 39.6 19.1 VqES264950
PK23S010 KC2023 09 25.07586602 27 17.18 +26 26 38.9 19.3 RqES264215
PK23S010 KC2023 09 25.07909502 27 17.11 +26 26 39.3 19.4 RqES264215
PK23S010 KC2023 09 25.08232502 27 17.05 +26 26 39.7 19.3 RqES264215
PK23S010 KB2023 09 25.12777 02 27 15.871+26 26 41.86 19.3 GXES264K87
PK23S010 KB2023 09 25.14534 02 27 15.415+26 26 43.15 19.2 GXES264K87
PK23S010 1C2023 09 25.44041 02 27 08.27 +26 27 01.8 19.7 TVES264U94
PK23S010 1C2023 09 25.44715 02 27 08.13 +26 27 01.9 VES264U94
PK23S010 KC2023 09 26.10344 02 26 51.79 +26 27 38.8 19.4 V ES264A77
PK23S010 KC2023 09 26.12994 02 26 51.09 +26 27 40.2 19.3 V ES264A77
PK23S010 KC2023 09 26.15509 02 26 50.44 +26 27 41.4 19.2 V ES264A77
PK23S010 KC2023 09 26.95941902 26 29.878+26 28 22.04 19.2 GVES264K38
PK23S010 KC2023 09 26.95969 02 26 29.61 +26 28 23.4 19.6 rVES264N51
PK23S010 KC2023 09 26.96454 02 26 29.48 +26 28 23.4 19.7 rVES264N51
PK23S010 KB2023 09 26.96534002 26 29.717+26 28 22.08 19.6 GXES264K74
PK23S010 KC2023 09 26.96937 02 26 29.34 +26 28 23.9 19.6 rVES264N51
PK23S010 KB2023 09 26.97294 02 26 29.49 +26 28 23.3 19.3 GXES264M45
PK23S010 KB2023 09 26.97935802 26 29.369+26 28 23.02 19.7 GXES264K74
PK23S010 KB2023 09 26.97980 02 26 29.29 +26 28 23.9 19.4 GXES264M45
PK23S010 KB2023 09 26.99337502 26 28.963+26 28 23.63 19.5 GXES264K74
PK23S010 KC2023 09 27.00514902 26 28.596+26 28 23.84 19.3 GVES264K38
PK23S010 KC2023 09 27.04666902 26 27.514+26 28 26.18 19.1 GVES264K38
PK23S010 BC2023 09 28.90399302 25 37.08 +26 29 41.4 19.7 GVES264L01
PK23S010 BC2023 09 28.90750902 25 36.95 +26 29 43.3 19.8 GVES264L01
PK23S010 BC2023 09 28.93606402 25 36.09 +26 29 44.3 19.6 GVES264L01
PK23S010 0B2023 09 29.00425 02 25 34.17 +26 29 48.8 20.2 VZES264M49
PK23S010 0B2023 09 29.03908 02 25 33.15 +26 29 50.8 19.6 VZES264M49
Observer details:
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
215 Buchloe. Observer W. Hasubick. 0.44-m f/4.6 reflector + CCD.
950 La Palma. Observer M. Masek. 0.25-m f/6.8 reflector + CCD.
A77 Observatoire Chante-Perdrix, Dauban. Observer F. Kugel. 0.40-m f/2.8
reflector + CCD.
B72 Soerth. Observer B. Koch. 0.36-m f/7.6 reflector + CMO.
C10 Maisoncelles. Observer J.-F. Soulier. 0.30-m f/3.8 Newtonian reflector +
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. Dukes, 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.
G00 AZM Martinsberg, Oed. Observers M. Jaeger, E. Prosperi, S. Prosperi.
Measurer M. Jaeger. 0.4-m f/3.2 reflector + CCD.
G02 KYSUCE Observatory, Kysucke Nove Mesto. Observer M. Urbanik. 0.40-m
f/6.8 Corrected Dall-Kirkham + CCD.
G03 Capricornus Observatory, Csokako. Observer T. Maroti. 0.28-m f/2.2
reflector + CMO.
G96 Mt. Lemmon Survey. Observer J. K. Hogan. Measurers B. Gray, D. Rankin,
F. C. Shelly. 1.5-m reflector + 10K CCD.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/3.7 reflector + CMO.
K38 M57 Observatory, Saltrio. Observer G. Baj. 0.35-m f/5.3 Ritchey-Chretien
+ CCD.
K74 Muensterschwarzach Observatory, Schwarzach. Observer C. Gerhard. 0.30-m
f/3.75 reflector + CMO.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.30-m f/8.0
0.30-m Schmidt-Cassegrain + CMOS + CMO.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, L. Poropat, G.
Kervina, M. Juric. Measurer K. Korlevic. 1.0-m f/2.9 reflector + CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea. Observer G. Ventre.
Measurers P. Sicoli, G. Ventre. 0.36m Schmidt Cassegrain + CCD.
L38 Gartensternwarte Schafsweide, Sehlde. Observer A. Opitz. 0.35-m f/5.2
Newton + CMO.
M45 Starhopper Observatory, Sfantu Gheorghe. Observer F. Ursache. 0.41-m
f/7.5 reflector + CMO.
M49 IAS Remote Observatory, Hakos. Observers D. Husar, M. Junius. Measurer
D. Husar. 0.25-m f/4.6 reflector + CMO.
N51 GROWTH India Telescope, IAO, Hanle. Observers Y. Wagh, R. Kumar, R.
Sharma, V. Swain, K. Angail, V. Bhalerao, G. C. Anupama, S. Barway.
Measurers Y. Wagh, R. Kumar. 0.70-m f/6.5 Corrected Dall-Kirkham + CCD.
Q21 Southern Utsunomiya. Observer H. Nohara. 0.4-m f/3.8 Astrograph + CCD.
U94 iTelescope Observatory, Beryl Junction. Observers H. Sato, T. Prystavski.
0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer, 0.51-m f/4.5
Corrected Dall-Kirkham + CCD.
W62 Comet Hunter Observatory2, New Ringgold. Observer J. Maikner. 0.30-m
f/3.8 Riccardi-Honders + CCD.
Orbital elements:
P/2023 S1
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2025 Feb. 26.75903 TT Rudenko
q 2.6398821 (2000.0) P Q
n 0.13064992 Peri. 179.41967 -0.73507201 -0.66953615
a 3.8464783 Node 317.88631 +0.62139984 -0.60235904
e 0.3136886 Incl. 9.15753 +0.27116671 -0.43460894
P 7.54
From 81 observations 2023 Sept. 15-29, mean residual 0".1.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 08 30 02 31 28.5 +25 26 04 3.3384 3.8340 112.1 14.1 20.0
...
2023 09 14 02 30 37.5 +26 08 45 3.1103 3.7924 126.2 12.4 19.8
...
2023 09 22 02 28 26.5 +26 23 00 3.0021 3.7701 134.1 11.0 19.7
...
2023 09 28 02 26 02.0 +26 29 10 2.9288 3.7532 140.1 9.9 19.6
2023 09 29 02 25 34.3 +26 29 47 2.9173 3.7504 141.1 9.7 19.6
2023 09 30 02 25 05.5 +26 30 17 2.9060 3.7476 142.1 9.4 19.6
...
2023 10 06 02 21 52.4 +26 30 44 2.8432 3.7307 148.2 8.1 19.5
...
2023 10 14 02 16 46.7 +26 24 11 2.7732 3.7081 156.2 6.2 19.4
...
2023 10 29 02 05 38.5 +25 50 10 2.6898 3.6654 167.3 3.4 19.3
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-S264
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