MPEC 2023-J101 : COMET C/2023 H1 (PANSTARRS)
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M.P.E.C. 2023-J101 Issued 2023 May 12, 00:01 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 H1 (PANSTARRS)
Y. Ramanjooloo reports the discovery of a comet in four 45-second survey
images taken on Apr. 17 UT by Pan-STARRS 2 (F52), noting a diffuse 2".6 coma.
Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
X07 2023-04-18 H. Sato 4" 8x120s
T14 2023-04-21 R. Weryk 0".8 8" 315 3x60s
T12 2023-04-29 Y. Ramanjooloo 3" 4" 315 3x60s, 1x180s
Observations:
CK23H010* C2023 04 17.34826712 18 57.807-30 04 19.47 20.80wUEJ101F52
CK23H010 C2023 04 17.35977312 18 57.498-30 04 17.62 20.74wUEJ101F52
CK23H010 C2023 04 17.37125012 18 57.246-30 04 15.54 20.90wUEJ101F52
CK23H010 C2023 04 17.38278912 18 56.961-30 04 13.59 20.78wUEJ101F52
CK23H010 KC2023 04 18.21458212 18 37.940-30 01 55.20 VEJ101I52
CK23H010 KC2023 04 18.23138412 18 37.544-30 01 51.82 VEJ101I52
CK23H010 KC2023 04 18.24635512 18 37.213-30 01 49.62 20.63GVEJ101I52
CK23H010 KC2023 04 18.26059112 18 36.896-30 01 47.64 20.26GVEJ101I52
CK23H010 0C2023 04 18.27669 12 18 36.43 -30 01 42.4 VEJ101X07
CK23H010 0C2023 04 18.28307 12 18 36.29 -30 01 41.2 20.4 GVEJ101X07
CK23H010 !C2023 04 20.01533 12 17 57.43 -29 56 44.5 19.7 GVEJ101J04
CK23H010 !C2023 04 20.02195 12 17 57.25 -29 56 43.4 19.6 GVEJ101J04
CK23H010 3C2023 04 21.36885112 17 27.686-29 52 43.99 20.17GVEJ101T14
CK23H010 3C2023 04 21.37006012 17 27.657-29 52 43.77 20.23GVEJ101T14
CK23H010 3C2023 04 21.37126812 17 27.629-29 52 43.57 20.18GVEJ101T14
CK23H010 KC2023 04 22.10377 12 17 11.79 -29 50 29.4 20.3 GVEJ101X03
CK23H010 KC2023 04 22.12603 12 17 11.29 -29 50 25.3 20.3 GVEJ101X03
CK23H010 KC2023 04 22.14846 12 17 10.76 -29 50 21.6 20.6 GVEJ101X03
CK23H010 1C2023 04 29.30432712 14 47.217-29 27 23.50 20.41GVEJ101T12
CK23H010 1C2023 04 29.30579712 14 47.192-29 27 23.04 20.31GVEJ101T12
CK23H010 1C2023 04 29.30683712 14 47.177-29 27 22.84 20.26GVEJ101T12
CK23H010 1C2023 04 29.31019212 14 47.132-29 27 22.42 20.99GVEJ101T12
CK23H010 DC2023 05 06.19582 12 12 50.80 -29 03 29.6 21.1 GVEJ101695
CK23H010 DC2023 05 06.20468 12 12 50.65 -29 03 28.2 20.5 GVEJ101695
CK23H010 DC2023 05 06.21355 12 12 50.52 -29 03 25.8 VEJ101695
Observer details:
695 Kitt Peak. Observer C. Lejoly. 2.3-m f/9 reflector + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, I.
Smith. 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.
I52 Steward Observatory, Mt. Lemmon Station. Observer J. B. Fazekas.
Measurers E. J. Christensen, D. Fay, J. B. Fazekas, D. C. Fuls, A. R.
Gibbs, A. D. Grauer, H. Groeller, J. K. Hogan, R. A. Kowalski, S. M.
Larson, G. J. Leonard, D. Rankin, R. L. Seaman, A. Serrano, F. C. Shelly,
K. W. Wierzchos. 1.0-m prime focus + CCD.
J04 ESA Optical Ground Station, Tenerife. Observers P. Ruiz, M. Micheli, F.
Ocana, L. Conversi. Measurers R. Kresken, M. Micheli, F. Ocana, A.
Knofel, M. Busch, E. Schwab. 1.0-m f/4.4 reflector + CCD.
T12 University of Hawaii 88-inch telescope, Maunakea. Observer Y.
Ramanjooloo. Measurers R. Weryk, Y. Ramanjooloo, R. Wainscoat. 2.24-m
University of Hawaii reflector + CCD.
T14 Canada-France-Hawaii Telescope, Maunakea. Observers R. Wainscoat, C.
Cunningham, E. Bertin. Measurers R. Weryk, R. Wainscoat. 3.6-m Canada-
France-Hawaii Telescope + CCD.
X03 Observatoire SADR, Poroto. Observers J. L. Virlichie, P. Traverse, H.
Roy, G. Houdin. Measurer P. Traverse. 0.35-m f/4.7 Newtonian reflector +
CCD.
X07 iTelescope Deep Sky Chile, Rio Hurtado. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD.
Orbital elements:
C/2023 H1 (PANSTARRS)
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5
T 2024 Nov. 30.90277 TT Rudenko
q 4.4611676 (2000.0) P Q
z +0.0029732 Peri. 333.63289 -0.03422255 +0.93899026
+/-0.0008629 Node 292.72838 -0.83884365 -0.21314140
e 0.9867360 Incl. 21.78040 -0.54329564 +0.26994082
From 25 observations 2023 Apr. 17-May 6, mean residual 0".2.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 04 12 12 21 04.4 -30 18 06 5.5360 6.4528 154.2 3.9 20.3
...
2023 04 27 12 15 31.1 -29 35 01 5.4982 6.3740 148.0 4.8 20.2
...
2023 05 05 12 13 09.3 -29 07 43 5.5017 6.3322 142.6 5.6 20.2
...
2023 05 11 12 11 44.3 -28 46 12 5.5142 6.3010 138.0 6.2 20.2
2023 05 12 12 11 32.1 -28 42 35 5.5171 6.2958 137.2 6.3 20.2
2023 05 13 12 11 20.4 -28 38 56 5.5202 6.2906 136.4 6.4 20.2
...
2023 05 19 12 10 23.2 -28 17 06 5.5430 6.2595 131.5 6.9 20.2
...
2023 05 27 12 09 42.3 -27 48 36 5.5842 6.2183 124.8 7.7 20.2
...
2023 06 11 12 10 19.6 -27 00 23 5.6877 6.1415 112.1 8.8 20.2
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-J101
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