MPEC 2024-C87 : COMET C/2024 B2 (Lemmon)
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M.P.E.C. 2024-C87 Issued 2024 February 8, 17:29 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/2024 B2 (Lemmon)
R. Weryk reports cometary activity of an asteroidal NEOCP candidate
(first reported by Mt. Lemmon Survey - G96 on Jan. 31 UT) in four 45-second
w-band incidental survey images taken on Feb. 3 by Pan-STARRS 2 (F52),
noting a diffuse 0".6 coma. Prediscovery positions were reported back
to May 2023. Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
T14 2023-05-15 S. Deen 1".5 8" 90-125
U94 2024-02-04 H. Sato 6" 24x60s
Observations:
CK24B020 5C2023 05 14.28221912 48 41.90 +82 55 47.5 22.6 rWEC087T14
CK24B020 5C2023 05 14.28706212 48 39.05 +82 55 44.8 22.3 rWEC087T14
CK24B020 5C2023 05 14.38950012 47 36.00 +82 54 48.1 22.2 rWEC087T14
CK24B020 5C2023 05 15.28306312 38 46.09 +82 46 09.4 22.4 rWEC087T14
CK24B020 5C2023 05 15.28731712 38 43.69 +82 46 07.1 22.3 rWEC087T14
CK24B020 5C2023 05 15.35214812 38 05.76 +82 45 27.4 22.5 rWEC087T14
CK24B020 C2023 12 29.49134710 13 42.662+58 00 24.14 21.21GVEC087F51
CK24B020 C2023 12 29.50108210 13 41.321+58 00 26.76 21.30GVEC087F51
CK24B020 C2023 12 29.51081710 13 39.945+58 00 29.96 21.52GVEC087F51
CK24B020 C2023 12 30.52375410 11 19.457+58 05 09.49 21.31GVEC087F51
CK24B020 C2023 12 30.53345810 11 17.972+58 05 11.89 20.55GVEC087F51
CK24B020 C2023 12 30.54415810 11 16.533+58 05 14.68 20.81GVEC087F51
CK24B020 C2023 12 30.55390910 11 15.106+58 05 17.09 21.16GVEC087F51
CK24B020 C2023 12 31.59095610 08 47.997+58 09 48.57 21.90GVEC087F51
CK24B020 C2023 12 31.60166510 08 46.469+58 09 51.23 22.20GVEC087F52
CK24B020 C2023 12 31.60198810 08 46.383+58 09 51.51 20.77GVEC087F51
CK24B020 C2023 12 31.61215110 08 44.913+58 09 53.76 20.91GVEC087F52
CK24B020 C2023 12 31.61303110 08 44.735+58 09 53.97 20.90GVEC087F51
CK24B020 C2023 12 31.62256710 08 43.318+58 09 56.80 22.14GVEC087F52
CK24B020 C2023 12 31.62406610 08 43.191+58 09 56.74 21.40GVEC087F51
CK24B020 C2023 12 31.63295610 08 41.932+58 09 59.45 20.82GVEC087F52
CK24B020 C2024 01 23.37439309 05 38.488+58 21 43.25 22.65GVEC087F52
CK24B020 C2024 01 23.38478609 05 36.623+58 21 40.59 21.40GVEC087F52
CK24B020 C2024 01 23.39047309 05 35.699+58 21 39.14 20.94GVEC087F51
CK24B020 C2024 01 23.39518009 05 34.802+58 21 38.26 21.32GVEC087F52
CK24B020 C2024 01 23.40154809 05 33.655+58 21 36.16 21.00GVEC087F51
CK24B020 C2024 01 23.40556209 05 32.927+58 21 35.00 21.26GVEC087F52
CK24B020 C2024 01 27.46626808 53 38.045+58 01 33.71 21.22GVEC087F52
CK24B020 C2024 01 27.47804608 53 35.949+58 01 29.39 20.79GVEC087F52
CK24B020 C2024 01 27.48982908 53 33.909+58 01 25.15 20.56GVEC087F52
CK24B020 C2024 01 27.50163508 53 31.708+58 01 21.03 21.53GVEC087F52
CK24B020*1C2024 01 31.25544508 42 46.001+57 36 25.63 20.60GVEC087G96
CK24B020 1C2024 01 31.26070708 42 45.076+57 36 24.26 VEC087G96
CK24B020 1C2024 01 31.26596808 42 44.255+57 36 21.20 20.35GVEC087G96
CK24B020 1C2024 01 31.27122808 42 43.276+57 36 18.86 20.80GVEC087G96
CK24B020 KC2024 01 31.37876708 42 24.930+57 35 29.90 20.82GVEC087I52
CK24B020 KC2024 01 31.38230208 42 24.296+57 35 28.75 21.40GVEC087I52
CK24B020 KC2024 01 31.38578608 42 23.753+57 35 27.60 VEC087I52
CK24B020 KC2024 01 31.38922308 42 23.083+57 35 25.51 21.11GVEC087I52
CK24B020 7C2024 02 01.98235308 37 55.866+57 22 59.09 20.4 GVEC087Z84
CK24B020 7C2024 02 01.98906108 37 54.750+57 22 55.79 20.8 GVEC087Z84
CK24B020 7C2024 02 01.99581008 37 53.573+57 22 52.50 20.4 GVEC087Z84
CK24B020 KB2024 02 02.15257 08 37 27.811+57 21 33.98 20.3 GXEC087H36
CK24B020 KB2024 02 02.16256 08 37 26.110+57 21 29.74 20.8 GXEC087H36
CK24B020 KB2024 02 02.18279 08 37 23.333+57 21 24.66 20.3 GXEC087H36
CK24B020 KC2024 02 03.16483308 34 40.42 +57 13 04.7 20.9 GVEC087H21
CK24B020 KC2024 02 03.16623208 34 40.20 +57 13 03.8 20.6 GVEC087H21
CK24B020 KC2024 02 03.17182908 34 39.32 +57 13 01.0 20.9 GVEC087H21
CK24B020 KC2024 02 03.17742608 34 38.37 +57 12 58.3 20.7 GVEC087H21
CK24B020 C2024 02 03.41041808 34 00.110+57 10 57.84 21.01wXEC087F52
CK24B020 C2024 02 03.42357408 33 57.920+57 10 51.14 20.85wXEC087F52
CK24B020 C2024 02 03.43660508 33 55.784+57 10 44.29 20.90wXEC087F52
CK24B020 C2024 02 03.44961208 33 53.603+57 10 37.66 20.94wXEC087F52
CK24B020 KC2024 02 03.83751 08 32 50.54 +57 07 10.9 20.4 VvEC087A77
CK24B020 KC2024 02 03.86383 08 32 46.24 +57 06 58.5 20.5 VvEC087A77
CK24B020 KC2024 02 03.93304108 32 34.911+57 06 21.41 20.7 GVEC087K63
CK24B020 KC2024 02 03.94527208 32 32.961+57 06 14.82 20.4 GVEC087K63
CK24B020 KC2024 02 03.94747908 32 32.529+57 06 13.54 20.2 GVEC087K63
CK24B020 KC2024 02 04.13872808 32 01.57 +57 04 30.9 20.1 GXEC087W62
CK24B020 KC2024 02 04.15113108 31 59.54 +57 04 24.2 19.8 GXEC087W62
CK24B020 KC2024 02 04.16318008 31 57.56 +57 04 17.7 19.9 GXEC087W62
CK24B020 0C2024 02 04.25917 08 31 42.02 +57 03 25.6 VEC087U94
CK24B020 0C2024 02 04.26907 08 31 40.39 +57 03 20.4 20.1 GVEC087U94
CK24B020 KC2024 02 04.77694 08 30 18.65 +56 58 41.4 20.6 GVEC087587
CK24B020 KC2024 02 04.78431 08 30 17.47 +56 58 37.3 VEC087587
CK24B020 KC2024 02 06.02922308 26 58.83 +56 46 50.0 19.8 GUEC087L06
CK24B020 KC2024 02 06.03623308 26 57.73 +56 46 45.9 20.1 GUEC087L06
Observer details:
587 Sormano. Observers A. Fumagalli, A. Testa. Measurer A. Testa. 0.5-m
f/6.8 reflector + CCD.
A77 Observatoire Chante-Perdrix, Dauban. Observer F. Kugel. 0.4-m f/2.8
reflector+CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, 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.
F52 Pan-STARRS 2, Haleakala. Observers J. Herman, T. Lowe, P. Minguez, A.
Schultz, I. Smith. Measurers K. Chambers, 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.
G96 Mt. Lemmon Survey. Observer J. K. Hogan. Measurers T. Beuden, V. F.
Carvajal, 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, F. C. Shelly, K. W. Wierzchos. 1.5-m reflector +
10K CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.76-m f/3.0 astrograph + CCD.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m f/4.8 reflector +
CMO.
I52 Steward Observatory, Mt. Lemmon Station. Observer R. A. Kowalski.
Measurers E. C. Beshore, 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, F. C. Shelly, K. W. Wierzchos. 1.0-m
prime focus + CCD.
K63 G. Pascoli Observatory, Castelvecchio Pascoli. Observer R. Bacci. 0.41-m
f/3.75 Reflector + CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea. Observer G. Ventre. 0.36m
Schmidt Cassegrain + CCD.
T14 Canada-France-Hawaii Telescope, Maunakea. Observer J. Cuillandre.
Measurer S. Deen. 3.58-m Canada-France-Hawaii Telescope + CCD.
U94 iTelescope Observatory, Beryl Junction. Observer H. Sato. 0.43-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.
Z84 Calar Alto-Schmidt. Observers F. Ocana, R. Kresken, M. Micheli, L.
Conversi. Measurers F. Ocana, M. Micheli. 0.8-m f/3 Schmidt + CCD.
Orbital elements:
C/2024 B2 (Lemmon)
Epoch 2023 Oct. 23.0 TT = JDT 2460240.5
T 2023 Oct. 6.13738 TT Veres
q 4.0768497 (2000.0) P Q
z +0.0000067 Peri. 130.33437 -0.38578884 -0.21392359
+/-0.0000000 Node 294.37899 +0.19280692 +0.93257196
e 0.9999729 Incl. 99.83734 +0.90221531 -0.29076835
From 67 observations 2023 May 14-2024 Feb. 6, mean residual 1".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2024 01 09 09 47 11.7 +58 35 56 3.4028 4.1559 134.9 9.6 20.3
...
2024 01 24 09 03 47.8 +58 19 05 3.3768 4.1824 140.4 8.6 20.4
...
2024 02 01 08 40 40.5 +57 30 45 3.3971 4.1980 139.8 8.7 20.4
...
2024 02 07 08 24 27.0 +56 37 14 3.4282 4.2104 137.7 9.1 20.4
2024 02 08 08 21 52.6 +56 27 01 3.4347 4.2125 137.2 9.1 20.4
2024 02 09 08 19 20.8 +56 16 26 3.4416 4.2147 136.7 9.2 20.4
...
2024 02 15 08 05 08.0 +55 06 26 3.4904 4.2278 133.2 9.8 20.5
...
2024 02 23 07 48 58.6 +53 19 04 3.5746 4.2462 127.2 10.7 20.5
...
2024 03 09 07 27 21.7 +49 35 01 3.7830 4.2832 113.9 12.2 20.7
M. P. C. Staff (C) Copyright 2024 MPC M.P.E.C. 2024-C87
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