MPEC 2023-F141 : COMET C/2023 C2 (ATLAS)
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M.P.E.C. 2023-F141 Issued 2023 March 26, 06:54 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 C2 (ATLAS)
J. Camarasa reports cometary activity of an asteroidal NEOCP candidate
(initialy reported by ATLAS Chile - W68 on Feb. 1 UT) in follow-up images
taken on Feb. 13 from Moonbase South Observatory (L87), noting a diffuse
5".6 coma. Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
X02 2023-02-28 E. Bryssinck 9" 13x180s
X02 2023-03-14 E. Bryssinck 9" 20x60s
Q62 2023-03-19 H. Sato 6" 20" 20 6x120s
Observations:
CK23C020* C2023 02 01.25410611 05 31.334-48 04 42.06 19.12oVEF141W68
CK23C020 C2023 02 01.27741611 05 30.458-48 04 50.05 19.24oVEF141W68
CK23C020 C2023 02 01.29240711 05 30.118-48 04 54.16 19.19oVEF141W68
CK23C020 C2023 02 01.30052911 05 29.798-48 04 55.34 19.07oVEF141W68
CK23C020 |C2023 02 03.25982 11 04 30.06 -48 14 54.3 19.7 GVEF141807
CK23C020 |C2023 02 03.26721 11 04 29.85 -48 14 56.3 19.6 GVEF141807
CK23C020 |C2023 02 03.27461 11 04 29.62 -48 14 58.6 19.6 GVEF141807
CK23C020 1C2023 02 03.74192 11 04 14.90 -48 17 16.9 VEF141Q62
CK23C020 1C2023 02 03.74631 11 04 14.76 -48 17 18.3 VEF141Q62
CK23C020 1C2023 02 03.75203 11 04 14.58 -48 17 19.8 20.0 GVEF141Q62
CK23C020 2C2023 02 05.17141211 03 29.13 -48 24 11.4 19.2 GVEF141W85
CK23C020 2C2023 02 05.17449811 03 29.02 -48 24 12.2 19.4 GVEF141W85
CK23C020 2C2023 02 05.17758211 03 28.92 -48 24 13.0 19.3 GVEF141W85
CK23C020 2C2023 02 05.18066411 03 28.82 -48 24 13.9 19.5 GVEF141W85
CK23C020 |C2023 02 12.12536 10 59 25.77 -48 54 07.8 19.7 GVEF141807
CK23C020 |C2023 02 12.12905 10 59 25.62 -48 54 08.6 19.8 GVEF141807
CK23C020 |C2023 02 12.13275 10 59 25.45 -48 54 09.8 19.8 GVEF141807
CK23C020 KC2023 02 12.98946 10 58 53.191-48 57 25.49 19.1 GXEF141L87
CK23C020 KC2023 02 12.99396 10 58 53.018-48 57 26.39 19.3 GXEF141L87
CK23C020 KC2023 02 12.99846 10 58 52.853-48 57 27.29 19.2 GXEF141L87
CK23C020 KC2023 02 17.90125 10 55 40.502-49 14 02.94 19.1 GXEF141L87
CK23C020 KC2023 02 17.90674 10 55 40.229-49 14 04.13 19.2 GXEF141L87
CK23C020 KC2023 02 17.91184 10 55 39.974-49 14 05.32 19.0 GXEF141L87
CK23C020 KC2023 02 19.09176 10 54 51.81 -49 17 32.8 18.7 GVEF141X03
CK23C020 KC2023 02 19.10291 10 54 51.31 -49 17 35.1 17.5 GVEF141X03
CK23C020 KC2023 02 19.11405 10 54 50.83 -49 17 36.9 17.2 GVEF141X03
CK23C020 KC2023 02 19.12521 10 54 50.35 -49 17 38.5 17.6 GVEF141X03
CK23C020 4C2023 02 21.12388 10 53 27.00 -49 23 02.8 19.2 VqEF141W88
CK23C020 4C2023 02 21.14815 10 53 25.98 -49 23 06.0 19.0 VqEF141W88
CK23C020 %C2023 02 21.17610 10 53 24.890-49 23 10.86 19.3 GVEF141W88
CK23C020 %C2023 02 21.18740 10 53 24.442-49 23 13.38 19.2 GVEF141W88
CK23C020 KC2023 02 24.05466 10 51 21.91 -49 29 50.9 19.1 VqEF141I47
CK23C020 KC2023 02 24.07412 10 51 20.91 -49 29 53.4 19.0 VqEF141I47
CK23C020 C2023 02 25.17347210 50 33.031-49 32 07.01 19.45cVEF141W68
CK23C020 C2023 02 25.19653310 50 31.975-49 32 08.45 19.41cVEF141W68
CK23C020 C2023 02 25.19833510 50 31.903-49 32 08.88 19.28cVEF141W68
CK23C020 C2023 02 25.20149010 50 31.776-49 32 10.57 19.57cVEF141W68
CK23C020 KC2023 02 26.13563710 49 50.707-49 33 53.02 20.0 GXEF141Y00
CK23C020 KC2023 02 26.14230010 49 50.434-49 33 54.46 19.2 GXEF141Y00
CK23C020 KC2023 02 26.14873510 49 50.165-49 33 54.66 19.1 GXEF141Y00
CK23C020 3C2023 02 26.16439 10 49 49.548-49 33 55.51 19.2 GVEF141W88
CK23C020 3C2023 02 26.18168 10 49 48.710-49 33 56.81 19.1 GVEF141W88
CK23C020 KC2023 02 27.24842 10 49 01.50 -49 35 45.2 19.6 GVEF141X03
CK23C020 KC2023 02 27.25734 10 49 01.09 -49 35 45.8 19.5 GVEF141X03
CK23C020 KC2023 02 27.26736 10 49 00.65 -49 35 46.9 19.7 GVEF141X03
CK23C020 C2023 02 28.03663 10 48 26.53 -49 36 57.1 19.7 GVEF141M28
CK23C020 C2023 02 28.04107 10 48 26.33 -49 36 57.4 19.7 GVEF141M28
CK23C020 KC2023 02 28.11820 10 48 22.88 -49 37 04.6 18.9 GVEF141X02
CK23C020 KC2023 02 28.13482 10 48 22.15 -49 37 06.5 19.0 GVEF141X02
CK23C020 KC2023 03 11.02707 10 40 06.58 -49 43 27.0 19.1 VqEF141I47
CK23C020 KC2023 03 11.04652 10 40 05.54 -49 43 25.0 19.0 VqEF141I47
CK23C020 "C2023 03 11.33065 10 39 52.45 -49 43 21.1 18.9 GVEF141W88
CK23C020 "C2023 03 11.36864 10 39 50.68 -49 43 20.2 18.8 GVEF141W88
CK23C020 KC2023 03 14.23489 10 37 39.55 -49 41 41.9 19.8 GVEF141X02
CK23C020 KC2023 03 14.24511 10 37 39.06 -49 41 41.9 19.6 GVEF141X02
CK23C020 KC2023 03 14.25294 10 37 38.72 -49 41 41.2 19.2 GVEF141X02
CK23C020 C2023 03 17.19799710 35 25.138-49 38 37.82 19.08oVEF141W68
CK23C020 C2023 03 17.20115410 35 24.931-49 38 38.29 19.29oVEF141W68
CK23C020 C2023 03 17.20658410 35 24.746-49 38 36.49 19.21oVEF141W68
CK23C020 C2023 03 17.21944210 35 24.204-49 38 36.60 19.16oVEF141W68
CK23C020 hC2023 03 17.44451 10 35 14.14 -49 38 19.4 19.2 VZEF141Q62
CK23C020 hC2023 03 17.44844 10 35 14.01 -49 38 18.9 19.1 VZEF141Q62
CK23C020 hC2023 03 17.45238 10 35 13.76 -49 38 18.7 19.3 VZEF141Q62
CK23C020 rC2023 03 18.41694 10 34 30.463-49 36 58.07 18.4 GVEF141Q62
CK23C020 rC2023 03 18.43057 10 34 29.882-49 36 57.20 19.0 GVEF141Q62
CK23C020 1C2023 03 19.51950 10 33 41.16 -49 35 16.2 VEF141Q62
CK23C020 1C2023 03 19.52255 10 33 41.03 -49 35 15.8 VEF141Q62
CK23C020 1C2023 03 19.52560 10 33 40.89 -49 35 15.5 18.6 GVEF141Q62
Observer details:
807 Cerro Tololo Observatory, La Serena. Observers T. Linder, R. Holmes, L.
Horn. 1.00-m f/10.0 astrograph + CCD.
I47 Pierre Auger Observatory, Malargue. Observer M. Masek. 0.3-m f/6.8
reflector + CCD.
L87 Moonbase South Observatory, Hakos. Observer G. Duszanowicz. Measurer J.
Camarasa. 0.36-m f/7.7 reflector + CCD.
M28 Lesedi Telescope-SAAO Observatory, Sutherland. Observers N. Erasmus, S.
Potter, C. van Gend, S. Chandra. Measurer N. Erasmus. 1.0-m f/8
Reflector + CCD.
Q62 iTelescope Observatory, Siding Spring. Observers H. Sato, D. Husar, M. G.
J. Breukers. 0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer, 0.43-m
f/6.8 reflector + CCD, 0.32-m f/9.0 Ritchey-Chretien + CCD.
W68 ATLAS Chile, Rio Hurtado. Observers L. Denneau, R. Siverd, J. Tonry, H.
Weiland. Measurers L. Denneau, N. Erasmus, A. Fitzsimmons, A. Lawrence,
J. Robinson, R. Siverd, J. Tonry, H. Weiland. 0.5-m Reflector + CCD.
W85 Cerro Tololo-LCO A. Observer J. D. Armstrong. 1.0-m f/8 modified
Ritchey-Chretien + CCD.
W88 Slooh.com Chile Observatory, La Dehesa. Observers G. Gasparovic, Y. Chen,
G. Y. Gasparovic, N. Paul, B. Lutkenhoner, K. Dankov. 0.43-m f/6.8
Corrected Dall-Kirkham + CCD, 0.35-m f/11 Schmidt-Cassegrain + CCD.
X02 Telescope Live, El Sauce. Observers E. Bryssinck, M. Rocchetto, E. Guido,
G. Milani, A. Valvasori. Measurer E. Bryssinck. 0.61-m f/6.7 reflector +
CCD.
X03 Observatoire SADR, Poroto. Observers J. L. Virlichie, P. Traverse, H.
Roy, G. Houdin. Measurers J. L. Virlichie, P. Traverse. 0.36-m f/4.8
reflector + CCD, 0.35-m f/4.7 Newtonian reflector + CCD.
Y00 SONEAR Observatory, Oliveira. Observer C. Jacques. 0.45-m f/2.9
reflector + CCD.
Orbital elements:
C/2023 C2 (ATLAS)
Epoch 2023 Feb. 25.0 TT = JDT 2460000.5
T 2024 Nov. 16.74304 TT Rudenko
q 2.3681140 (2000.0) P Q
z +0.0002401 Peri. 357.44310 +0.48959319 +0.59224974
+/-0.0001715 Node 301.03268 -0.78616202 -0.01763268
e 0.9994313 Incl. 48.31787 -0.37715753 +0.80556150
From 68 observations 2023 Feb. 1-Mar. 19, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 02 24 10 51 24.1 -49 29 44 5.9848 6.5428 120.5 7.5 19.0
...
2023 03 11 10 40 07.7 -49 43 27 5.8013 6.4287 125.5 7.2 18.9
...
2023 03 19 10 34 04.3 -49 36 05 5.7210 6.3676 126.8 7.2 18.8
...
2023 03 25 10 29 42.3 -49 24 05 5.6691 6.3218 127.2 7.2 18.8
2023 03 26 10 29 00.0 -49 21 34 5.6611 6.3141 127.2 7.2 18.8
2023 03 27 10 28 18.2 -49 18 55 5.6534 6.3065 127.2 7.2 18.8
...
2023 04 02 10 24 18.3 -49 00 11 5.6110 6.2605 126.8 7.3 18.7
...
2023 04 10 10 19 34.3 -48 28 26 5.5653 6.1992 125.4 7.6 18.7
...
2023 04 25 10 13 00.3 -47 13 03 5.5110 6.0838 120.5 8.2 18.5
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-F141
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