[Iaude] MPEC X226: COMET C/2023 X2 (Lemmon)
mpec at marsden.cfa.harvard.edu
mpec at marsden.cfa.harvard.edu
Mon Dec 11 22:23:05 EST 2023
M.P.E.C. 2023-X226 Issued 2023 December 12, 03:20 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/2023 X2 (Lemmon)
R. Weryk reports the cometary activity of NEOCP candidate (first reported
by Mt. Lemmon Survey - G96 on Dec. 4 UT) in independent survey images taken
on Dec. 4 by Pan-STARRS 1 (F51), noting a condensed 0".7 coma and a straight 6"
tail at position angle 210 deg. Prediscovery positions were reported back to
Aug. 2023 UT. Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
F52 2023-12-07 Y. Ramanjooloo 2".1 2".2 227 4x45s
204 2023-12-07 L. Buzzi 7" 12" 265 99x30s
Observations:
CK23X020 C2023 08 18.60582304 43 22.868+12 35 12.29 21.79GVEX226F52
CK23X020 C2023 08 18.61097204 43 22.937+12 35 13.14 22.09GVEX226F52
CK23X020 C2023 08 18.61608604 43 22.991+12 35 13.56 21.69GVEX226F52
CK23X020 C2023 08 18.62120304 43 23.043+12 35 14.40 21.97GVEX226F52
CK23X020 C2023 09 20.55756904 44 41.892+13 36 34.55 21.77GVEX226F52
CK23X020 C2023 09 20.56972404 44 41.809+13 36 35.84 21.35GVEX226F52
CK23X020 C2023 09 20.58192104 44 41.734+13 36 37.03 21.52GVEX226F52
CK23X020 C2023 10 07.49368404 41 35.363+14 06 48.92 21.06GVEX226F52
CK23X020 C2023 10 07.50541804 41 35.149+14 06 50.35 21.44GVEX226F52
CK23X020 C2023 10 07.51704204 41 34.996+14 06 51.57 21.30GVEX226F52
CK23X020 C2023 10 07.52866904 41 34.811+14 06 52.90 21.54GVEX226F52
CK23X020 C2023 10 12.47050504 40 09.081+14 15 48.74 21.48wXEX226F51
CK23X020 C2023 10 12.48463104 40 08.803+14 15 50.25 21.61wXEX226F51
CK23X020 C2023 10 12.49638504 40 08.575+14 15 51.79 21.32wXEX226F51
CK23X020 C2023 10 12.50809404 40 08.348+14 15 52.56 21.59wXEX226F51
CK23X020 C2023 10 17.46998004 38 28.173+14 24 57.03 21.53wXEX226F52
CK23X020 C2023 10 17.48108404 38 27.905+14 24 58.24 21.60wXEX226F52
CK23X020 C2023 10 17.49217504 38 27.684+14 24 59.50 21.70wXEX226F52
CK23X020 C2023 10 17.50321404 38 27.462+14 25 00.89 21.82wXEX226F52
CK23X020 1C2023 11 04.44621904 30 37.184+14 59 06.29 20.44GVEX226G96
CK23X020 1C2023 11 04.45142204 30 37.033+14 59 06.68 20.31GVEX226G96
CK23X020 1C2023 11 04.45663004 30 36.886+14 59 07.15 20.62GVEX226G96
CK23X020 1C2023 11 04.46183004 30 36.731+14 59 07.98 20.37GVEX226G96
CK23X020 C2023 11 16.39019904 24 07.580+15 23 14.91 20.78wXEX226F52
CK23X020 C2023 11 16.40332404 24 07.130+15 23 16.71 20.75wXEX226F52
CK23X020 C2023 11 16.41628904 24 06.654+15 23 18.11 20.75wXEX226F52
CK23X020 C2023 12 04.31664504 13 21.529+16 02 18.39 20.51wXEX226F51
CK23X020 C2023 12 04.33254704 13 20.947+16 02 20.61 20.88wXEX226F51
CK23X020 C2023 12 04.34673104 13 20.410+16 02 22.51 20.63wXEX226F51
CK23X020*1C2023 12 04.35197304 13 20.172+16 02 22.60 19.74GVEX226G96
CK23X020 1C2023 12 04.35709804 13 19.978+16 02 23.24 20.24GVEX226G96
CK23X020 C2023 12 04.36088104 13 19.894+16 02 24.28 20.59wXEX226F51
CK23X020 1C2023 12 04.36221504 13 19.780+16 02 24.14 20.11GVEX226G96
CK23X020 1C2023 12 04.36733304 13 19.603+16 02 24.47 19.88GVEX226G96
CK23X020 4B2023 12 05.05930604 12 54.276+16 04 01.42 19.8 GVEX226X06
CK23X020 4B2023 12 05.07861104 12 53.645+16 04 03.72 19.9 GVEX226X06
CK23X020 0C2023 12 06.16035 04 12 13.96 +16 06 31.8 VEX226U94
CK23X020 0C2023 12 06.16813 04 12 13.67 +16 06 32.4 20.2 GVEX226U94
CK23X020 KC2023 12 06.74708704 11 52.40 +16 07 53.1 19.9 GVEX226587
CK23X020 KC2023 12 06.75233404 11 52.23 +16 07 53.5 20.1 GVEX226587
CK23X020 KC2023 12 06.75758104 11 52.06 +16 07 54.2 19.9 GVEX226587
CK23X020 KC2023 12 06.81843 04 11 49.87 +16 08 03.3 20.5 GVEX226204
CK23X020 KC2023 12 06.84939 04 11 48.71 +16 08 06.4 VEX226204
CK23X020 KC2023 12 06.87963 04 11 47.58 +16 08 11.5 VEX226204
CK23X020 KC2023 12 07.00317 04 11 42.99 +16 08 28.7 20.5 GVEX226204
CK23X020 KC2023 12 07.02101 04 11 42.31 +16 08 31.0 VEX226204
CK23X020 C2023 12 07.33053504 11 31.086+16 09 15.02 20.61wXEX226F52
CK23X020 C2023 12 07.34287604 11 30.625+16 09 16.60 20.53wXEX226F52
CK23X020 C2023 12 07.35516304 11 30.164+16 09 18.49 20.60wXEX226F52
CK23X020 C2023 12 07.36749704 11 29.719+16 09 20.19 20.56wXEX226F52
CK23X020 KB2023 12 07.79322 04 11 14.19 +16 10 19.0 19.9 GXEX226G00
CK23X020 KC2023 12 07.79469 04 11 14.18 +16 10 19.0 20.2 GVEX226G00
CK23X020 KB2023 12 07.80055 04 11 13.97 +16 10 19.9 19.4 GXEX226G00
CK23X020 KC2023 12 07.80055 04 11 13.96 +16 10 20.0 20.1 GVEX226G00
CK23X020 KC2023 12 07.80641 04 11 13.71 +16 10 20.2 19.9 GVEX226G00
CK23X020 KB2023 12 07.80787 04 11 13.67 +16 10 21.1 19.5 GXEX226G00
CK23X020 KC2023 12 07.92904 04 11 09.19 +16 10 38.6 19.8 GVEX226104
CK23X020 KC2023 12 07.94477 04 11 08.66 +16 10 39.4 20.1 GVEX226104
CK23X020 KC2023 12 08.00491404 11 06.38 +16 10 48.5 20.5 GVEX226L01
CK23X020 KC2023 12 08.01699904 11 05.92 +16 10 50.0 21.0 GVEX226L01
CK23X020 KC2023 12 08.01952604 11 05.86 +16 10 51.2 20.8 GVEX226L01
CK23X020 1C2023 12 08.27181704 10 56.684+16 11 26.10 LEX226658
CK23X020 1C2023 12 08.27628504 10 56.526+16 11 26.76 LEX226658
CK23X020 1C2023 12 08.28075204 10 56.360+16 11 27.37 LEX226658
CK23X020 1C2023 12 08.28520804 10 56.198+16 11 27.81 LEX226658
CK23X020 1C2023 12 08.28967604 10 56.040+16 11 28.47 LEX226658
CK23X020 KC2023 12 08.79429 04 10 37.68 +16 12 38.6 19.5 VZEX226M63
CK23X020 KC2023 12 08.80638 04 10 37.23 +16 12 40.6 20.1 VZEX226M63
CK23X020 KC2023 12 08.81807 04 10 36.84 +16 12 43.0 20.6 VZEX226M63
CK23X020 KC2023 12 09.05892604 10 28.04 +16 13 16.4 20.1 GXEX226W62
CK23X020 KC2023 12 09.07296104 10 27.52 +16 13 18.3 19.9 GXEX226W62
CK23X020 KC2023 12 09.08699504 10 27.01 +16 13 20.4 19.9 GXEX226W62
CK23X020 KC2023 12 11.19060 04 09 10.62 +16 18 20.2 19.7 GVEX226X03
CK23X020 KC2023 12 11.20396 04 09 10.14 +16 18 21.2 19.8 GVEX226X03
CK23X020 KC2023 12 11.21622 04 09 09.70 +16 18 23.1 19.7 GVEX226X03
Observer details:
104 San Marcello Pistoiese. Observers P. Bacci, M. Maestripieri. Measurer P.
Bacci. 0.60-m f/4.0 reflector + CCD.
204 Schiaparelli Observatory. Observers A. Aletti, L. Buzzi, G. Galli.
Measurers A. Aletti, M. Auteri, L. Buzzi, G. Galli. 0.36-m f/7.5
reflector + CCD, 0.84-m f/3.5 reflector + CCD.
587 Sormano. Observers E. Colzani, G. Ventre. Measurer P. Sicoli. 0.5-m
f/6.8 reflector + CCD.
658 National Research Council of Canada. Observers D. D. Balam, C. E. Spratt.
Measurers D. D. Balam, D. W. E. Green. 1.82-m Reflector + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, P. Minguez, A.
Schultz, I. Smith, J. Herman. 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, J. Bulger. 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.
G00 AZM Martinsberg, Oed. Observers M. Jaeger, E. Prosperi, S. Prosperi.
Measurer M. Jaeger. 0.30-m f/4.0 reflector + CMO, 0.3-m f/4.0 reflector +
CCD.
G96 Mt. Lemmon Survey. Observers J. B. Fazekas, J. K. Hogan. 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. 1.5-m reflector +
10K CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector
+ CCD.
M63 RPF Observatory, Gagliano del Capo. Observer D. Licchelli. 0.30-m f/5.3
reflector + CCD.
U94 iTelescope Observatory, Beryl Junction. Observer H. Sato. 0.43-m f/6.8
astrograph + CCD.
W62 Comet Hunter Observatory2, New Ringgold. Observer J. Maikner. 0.30-m
f/3.8 Riccardi-Honders + CCD.
X03 Observatoire SADR, Poroto. Observers J. L. Virlichie, P. Traverse, H.
Roy. Measurer J. L. Virlichie. 0.36-m f/4.8 reflector + CCD.
X06 Skygems Chile, Rio Hurtado. Observer J. Camarasa. 0.40-m f/6.6 reflector
+ CMO.
Orbital elements:
C/2023 X2 (Lemmon)
Epoch 2023 Sept. 13.0 TT = JDT 2460200.5
T 2025 Dec. 26.29303 TT Veres
q 5.1048631 (2000.0) P Q
z +0.0000088 Peri. 64.41124 -0.01269381 -0.45151571
+/-0.0000699 Node 66.31255 +0.08830966 -0.88926448
e 0.9999551 Incl. 76.97025 +0.99601218 +0.07309066
>From 75 observations 2023 Aug. 18-Dec. 11, mean residual 0".3.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2023 11 12 04 26 36.4 +15 14 13 6.6812 7.6221 160.6 2.5 19.9
...
2023 11 27 04 17 49.6 +15 45 55 6.5636 7.5463 174.4 0.7 19.9
...
2023 12 05 04 12 56.5 +16 03 52 6.5320 7.5061 170.6 1.2 19.8
...
2023 12 11 04 09 17.6 +16 17 52 6.5227 7.4760 164.4 2.0 19.8
2023 12 12 04 08 41.5 +16 20 15 6.5223 7.4709 163.3 2.2 19.8
2023 12 13 04 08 05.5 +16 22 38 6.5222 7.4659 162.2 2.3 19.8
...
2023 12 19 04 04 34.1 +16 37 19 6.5288 7.4359 155.6 3.1 19.8
...
2023 12 27 04 00 07.8 +16 57 45 6.5550 7.3960 146.6 4.2 19.8
...
2024 01 11 03 52 58.5 +17 39 02 6.6515 7.3215 129.9 5.9 19.8
M. P. C. Staff (C) Copyright 2023 MPC M.P.E.C. 2023-X226
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