[Iaude] MPEC D98: COMET C/2024 C4 (ATLAS)
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Wed Feb 21 03:43:27 EST 2024
M.P.E.C. 2024-D98 Issued 2024 February 21, 08:40 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 at CFA.HARVARD.EDU
URL https://www.minorplanetcenter.net/ ISSN 1523-6714
COMET C/2024 C4 (ATLAS)
S. Deen reports cometary activity of an asteroidal NEOCP candidate
(first reported by ATLAS South Africa - M22 on Feb. 14 UT) in follow-up
images taken on Feb. 14 by Deep Random Survey (X09), noting a diffuse
3".5 coma and a broad 9" tail at position angle 180-250 deg. Additional
reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
M22 2024-02-14 A. Fitzsimmons 14" 18" 220
X07 2024-02-14 K. Yoshimoto 13" 13" 225 20x30s
X07 2024-02-14 H. Sato 17" 10x30s
Q62 2024-02-14 H. Sato 15" 10" 230-260 7x60s
X07 2024-02-15 M. Mattiazzo 20" 10" 230
M49 2024-02-16 D. Husar 13"
Q38 2024-02-16 M. Mattiazzo 120"
X07 2024-02-16 T. Prystavski 24" 30" 189-261 7x50s
W88 2024-02-17 B. Lutkenhoner 5"
M49 2024-02-18 D. Husar 15" 10" 220
Observations:
CK24C040* C2024 02 14.08138116 55 01.649-48 34 21.22 17.45oVED098M22
CK24C040 C2024 02 14.08457716 55 01.826-48 34 16.28 17.50oVED098M22
CK24C040 C2024 02 14.10474216 55 03.010-48 33 43.92 16.50oVED098M22
CK24C040 C2024 02 14.10753816 55 03.221-48 33 39.64 17.31oVED098M22
CK24C040 C2024 02 14.20051916 55 09.18 -48 31 04.9 WED098X09
CK24C040 C2024 02 14.20404516 55 09.38 -48 30 59.7 WED098X09
CK24C040 C2024 02 14.20756716 55 09.65 -48 30 53.4 WED098X09
CK24C040 &C2024 02 14.28883 16 55 14.68 -48 28 44.3 16.9 TVED098X07
CK24C040 &C2024 02 14.29249 16 55 14.90 -48 28 38.5 VED098X07
CK24C040 &C2024 02 14.29620 16 55 15.15 -48 28 32.6 VED098X07
CK24C040 0C2024 02 14.36278 16 55 19.22 -48 26 45.5 VED098X07
CK24C040 0C2024 02 14.36709 16 55 19.45 -48 26 38.7 16.4 GVED098X07
CK24C040 ZC2024 02 14.74036 16 55 42.39 -48 16 30.7 15.9 TqED098Q62
CK24C040 ZC2024 02 14.74642 16 55 42.75 -48 16 20.6 qED098Q62
CK24C040 ZC2024 02 14.75197 16 55 43.07 -48 16 11.7 qED098Q62
CK24C040 1C2024 02 14.76719 16 55 44.00 -48 15 46.9 VED098Q62
CK24C040 1C2024 02 14.76932 16 55 44.10 -48 15 43.4 VED098Q62
CK24C040 1C2024 02 14.77103 16 55 44.24 -48 15 40.6 16.0 GVED098Q62
CK24C040 .C2024 02 15.23617 16 56 12.362-48 02 54.82 17.3 GVED098W88
CK24C040 .C2024 02 15.24478 16 56 12.905-48 02 40.74 17.0 GVED098W88
CK24C040 8C2024 02 15.25331 16 56 13.34 -48 02 26.9 17.1 GVED098X07
CK24C040 8C2024 02 15.25501 16 56 13.46 -48 02 23.8 17.1 GVED098X07
CK24C040 8C2024 02 15.25670 16 56 13.60 -48 02 21.2 17.3 GVED098X07
CK24C040 8C2024 02 15.25841 16 56 13.67 -48 02 18.7 17.4 GVED098X07
CK24C040 8C2024 02 15.25926 16 56 13.72 -48 02 17.3 15.8 GVED098X07
CK24C040 "C2024 02 15.26708 16 56 14.18 -48 02 04.0 16.5 GVED098W88
CK24C040 "C2024 02 15.26825 16 56 14.27 -48 02 02.1 16.4 GVED098W88
CK24C040 %C2024 02 15.28868 16 56 15.413-48 01 29.21 16.2 GVED098W88
CK24C040 %C2024 02 15.32027 16 56 17.273-48 00 37.73 15.8 GVED098W88
CK24C040 KC2024 02 15.35948 16 56 19.61 -47 59 34.0 15.8 GVED098X03
CK24C040 KC2024 02 15.36780 16 56 20.06 -47 59 20.5 15.6 GVED098X03
CK24C040 KC2024 02 15.37611 16 56 20.53 -47 59 06.8 15.6 GVED098X03
CK24C040 KC2024 02 15.38441 16 56 20.98 -47 58 53.1 15.7 GVED098X03
CK24C040 KC2024 02 15.39211 16 56 21.37 -47 58 40.7 15.8 GVED098X03
CK24C040 S2024 02 15.82038416 56 46.189-47 46 53.23 LED098C53
CK24C040 s2024 02 15.8203841 - 3541.5809 - 5954.4237 - 1791.9495 ED098C53
CK24C040 S2024 02 15.82872116 56 46.789-47 46 43.60 LED098C53
CK24C040 s2024 02 15.8287211 - 3831.3007 - 5018.6290 + 3366.6647 ED098C53
CK24C040 S2024 02 15.83150016 56 46.977-47 46 38.25 LED098C53
CK24C040 s2024 02 15.8315001 - 3442.3401 - 4031.5352 + 4804.7582 ED098C53
CK24C040 0B2024 02 16.13986 16 57 04.867-47 37 58.51 17.5 VZED098M49
CK24C040 0B2024 02 16.14697 16 57 05.239-47 37 46.49 17.6 VZED098M49
CK24C040 0B2024 02 16.15407 16 57 05.640-47 37 34.82 17.6 VZED098M49
CK24C040 5C2024 02 16.31479 16 57 14.875-47 33 03.82 16.7 GVED098W88
CK24C040 C2024 02 16.31567716 57 14.933-47 33 01.98 16.65oVED098W68
CK24C040 C2024 02 16.31886316 57 15.101-47 32 56.72 17.38oVED098W68
CK24C040 5C2024 02 16.31927 16 57 15.108-47 32 56.15 16.9 GVED098W88
CK24C040 5C2024 02 16.32856 16 57 15.622-47 32 40.56 17.1 GVED098W88
CK24C040 C2024 02 16.33827916 57 16.188-47 32 24.68 17.43oVED098W68
CK24C040 3C2024 02 16.35525 16 57 17.08 -47 31 56.4 15.7 TVED098X07
CK24C040 3C2024 02 16.35594 16 57 17.11 -47 31 55.3 VED098X07
CK24C040 C2024 02 16.35742116 57 17.153-47 31 53.29 16.65oVED098W68
CK24C040 3C2024 02 16.35787 16 57 17.23 -47 31 52.1 VED098X07
CK24C040 3C2024 02 16.35916 16 57 17.30 -47 31 50.1 VED098X07
CK24C040 KC2024 02 16.57492 16 57 29.39 -47 25 44.8 17.7 RqED098E94
CK24C040 KC2024 02 16.61878 16 57 31.87 -47 24 32.5 17.7 RqED098E94
CK24C040 KC2024 02 16.63078 16 57 32.57 -47 24 12.4 17.6 RqED098E94
CK24C040 KC2024 02 16.64278 16 57 33.12 -47 23 51.1 17.6 RqED098E94
CK24C040 C2024 02 16.76700 16 57 39.98 -47 20 22.9 14.3 GVED098Q38
CK24C040 C2024 02 16.77061 16 57 40.28 -47 20 18.6 15.7 GVED098Q38
CK24C040 C2024 02 16.77421 16 57 40.37 -47 20 10.6 16.2 GVED098Q38
CK24C040 C2024 02 17.07416 16 57 56.87 -47 11 41.9 17.8 GVED098L09
CK24C040 C2024 02 17.07628 16 57 56.96 -47 11 38.2 17.9 GVED098L09
CK24C040 C2024 02 17.07840 16 57 57.12 -47 11 34.6 17.8 GVED098L09
CK24C040 3C2024 02 17.31927 16 58 10.102-47 04 44.58 16.8 GVED098W88
CK24C040 3C2024 02 17.32803 16 58 10.603-47 04 29.71 17.1 GVED098W88
CK24C040 0B2024 02 18.13155 16 58 52.709-46 41 31.24 17.3 VZED098M49
CK24C040 0B2024 02 18.13512 16 58 52.865-46 41 24.58 17.4 VZED098M49
CK24C040 0B2024 02 18.13867 16 58 53.064-46 41 17.99 17.4 VZED098M49
CK24C040 C2024 02 20.34259017 00 39.245-45 36 29.81 17.47oVED098W68
CK24C040 C2024 02 20.37041817 00 40.409-45 35 40.52 17.50oVED098W68
CK24C040 C2024 02 20.38484017 00 41.011-45 35 15.04 17.44oVED098W68
Observer details:
C53 NEOSSat. Observer A. MacDougall. Measurers D. D. Balam, D. W. E. Green,
C. E. Spratt. 0.15-m Maksutov Reflector + CCD.
E94 Possum Observatory, Gisborne. Observer J. Drummond. 0.41-m f/4.5
Newtonian + CCD.
L09 Sutherland-LCO Aqawan A #1. Observer A. Hale. 0.35-m f/3 Cassegrain +
CCD.
M22 ATLAS South Africa, Sutherland. 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.
M49 IAS Remote Observatory, Hakos. Observers D. Husar, M. Junius. Measurer
D. Husar. 0.25-m f/4.5 reflector + CMO.
Q38 Swan Hill. Observer M. Mattiazzo. C11 RASA at f/2.2 + Canon 6d.
Q62 iTelescope Observatory, Siding Spring. Observers T. Prystavski, H. Sato.
0.32-m f/9.0 Ritchey-Chretien + CCD, 0.51-m f/6.8 astrograph + 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.
W88 Slooh.com Chile Observatory, La Dehesa. Observers E. Cortes, K. Dankov,
N. Paul, M. Kumrucu-Lohmiller, B. Lutkenhoner. 0.43-m f/6.8 Corrected
Dall-Kirkham + CCD, 0.35-m f/11 Schmidt-Cassegrain + CCD, 0.35-m f/11.0
reflector + CCD.
X03 Observatoire SADR, Poroto. Observers J. L. Virlichie, P. Traverse, H.
Roy. Measurer H. Roy. 0.36-m f/4.8 reflector + CCD.
X07 iTelescope Deep Sky Chile, Rio Hurtado. Observers K. Yoshimoto, H. Sato,
M. Mattiazzo, T. Prystavski. 0.36-m f/7.2 Corrected Dall-Kirkham + CMO,
0.51-m f/6.8 astrograph + CCD, T73 Planewave CDK14 + CMOS CCD, 0.51-m
f/6.8 Corrected Dall-Kirkham + CCD.
X09 Deep Random Survey, Rio Hurtado. Observers A. Schnabel, D. Ruhela.
Measurer S. Deen. 0.43-m reflector + CMOS.
Orbital elements:
C/2024 C4 (ATLAS)
Epoch 2024 Jan. 11.0 TT = JDT 2460320.5
T 2024 Jan. 30.86308 TT Rudenko
q 1.4784344 (2000.0) P Q
z +0.0000001 Peri. 322.05036 -0.67042676 -0.37120274
+/-0.0000000 Node 220.80447 -0.15413922 -0.77729025
e 0.9999999 Incl. 79.45615 -0.72578858 +0.50796496
>From 69 observations 2024 Feb. 14-20, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2024 01 22 16 17 32.9 -57 23 02 1.7741 1.4838 56.8 33.7 17.5
...
2024 02 06 16 44 58.9 -51 59 01 1.6243 1.4810 63.7 36.7 17.3
...
2024 02 14 16 54 56.0 -48 36 34 1.5309 1.4919 68.8 38.1 17.2
...
2024 02 20 17 00 23.2 -45 46 46 1.4563 1.5055 73.2 39.0 17.1
2024 02 21 17 01 07.8 -45 16 42 1.4436 1.5083 74.0 39.1 17.1
2024 02 22 17 01 49.6 -44 46 05 1.4308 1.5111 74.8 39.2 17.1
...
2024 02 28 17 05 00.8 -41 29 48 1.3531 1.5308 79.9 39.6 17.0
...
2024 03 07 17 06 33.1 -36 28 16 1.2494 1.5635 87.7 39.4 16.9
...
2024 03 22 17 00 29.7 -24 19 38 1.0730 1.6430 105.1 35.8 16.8
M. P. C. Staff (C) Copyright 2024 MPC M.P.E.C. 2024-D98
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