[Iaude] MPEC K128: COMET C/2024 J4 (Lemmon)
mpec at cfa.harvard.edu
mpec at cfa.harvard.edu
Wed May 29 21:28:42 EDT 2024
M.P.E.C. 2024-K128 Issued 2024 May 30, 01:25 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 J4 (Lemmon)
A. Tubbiolo reports cometary activity of an asteroidal NEOCP candidate
(first reported by Mt. Lemmon Survey - G96 on May 11 UT) in six 60-second
stacked follow-up images taken on May 17 UT by Kitt Peak (695), noting
a diffuse 6" coma and a broad 15" tail at position angle 120 - 160 deg.
Additional reports of cometary features are as follows:
OC Date Reporter Coma Tail PA Exposures
695 2024-05-19 A. Tubbiolo 6" 15" 110-120 9x60s
695 2024-05-28 A. Tubbiolo 6" 18" 110-169 30x60s
Observations:
CK24J040*1C2024 05 11.41593319 03 43.517+44 49 07.21 20.17GVEK128G96
CK24J040 1C2024 05 11.42072619 03 43.254+44 49 09.91 20.18GVEK128G96
CK24J040 1C2024 05 11.42553119 03 42.966+44 49 11.71 20.40GVEK128G96
CK24J040 KC2024 05 11.45175619 03 41.393+44 49 21.83 20.09GVEK128I52
CK24J040 KC2024 05 11.46037619 03 40.864+44 49 25.61 20.34GVEK128I52
CK24J040 KC2024 05 11.46757119 03 40.414+44 49 28.63 VEK128I52
CK24J040 1C2024 05 12.04407 19 03 05.47 +44 53 17.8 20.9 VXEK128033
CK24J040 1C2024 05 12.04485 19 03 05.44 +44 53 18.2 20.8 VXEK128033
CK24J040 1C2024 05 12.04563 19 03 05.39 +44 53 18.5 20.9 VXEK128033
CK24J040 1C2024 05 12.04673 19 03 05.29 +44 53 19.0 20.8 VXEK128033
CK24J040 1C2024 05 12.04782 19 03 05.24 +44 53 19.4 21.0 VXEK128033
CK24J040 1C2024 05 12.08176 19 03 03.10 +44 53 33.2 20.9 VXEK128033
CK24J040 1C2024 05 12.08255 19 03 03.03 +44 53 33.5 20.6 VXEK128033
CK24J040 1C2024 05 12.08334 19 03 03.04 +44 53 33.6 21.0 VXEK128033
CK24J040 KB2024 05 12.31700 19 02 48.715+44 55 05.66 20.5 GVEK128734
CK24J040 KC2024 05 12.32204419 02 48.45 +44 55 08.3 20.6 GVEK128H21
CK24J040 KB2024 05 12.32422 19 02 48.230+44 55 08.76 20.3 GVEK128734
CK24J040 C2024 05 12.32511119 02 48.303+44 55 09.39 20.3 GVEK128H01
CK24J040 KC2024 05 12.32763519 02 48.12 +44 55 10.2 20.5 GVEK128H21
CK24J040 mC2024 05 12.32862719 02 48.020+44 55 10.40 19.85GVEK128I52
CK24J040 KC2024 05 12.32903319 02 48.02 +44 55 10.7 20.4 GVEK128H21
CK24J040 KC2024 05 12.33182819 02 47.89 +44 55 12.2 20.5 GVEK128H21
CK24J040 mC2024 05 12.33498019 02 47.750+44 55 11.80 19.48GVEK128I52
CK24J040 C2024 05 12.33534819 02 47.664+44 55 13.54 20.2 GVEK128H01
CK24J040 KC2024 05 12.33760519 02 47.51 +44 55 14.5 20.7 GVEK128H21
CK24J040 C2024 05 12.33988719 02 47.387+44 55 15.30 20.2 GVEK128H01
CK24J040 mC2024 05 12.34139219 02 47.320+44 55 15.90 20.19GVEK128I52
CK24J040 C2024 05 12.34586619 02 47.007+44 55 17.64 20.1 GVEK128H01
CK24J040 mC2024 05 12.34790819 02 46.830+44 55 17.60 VEK128I52
CK24J040 0C2024 05 12.39347 19 02 44.07 +44 55 36.5 VEK128U94
CK24J040 0C2024 05 12.40105 19 02 43.61 +44 55 39.1 19.8 GVEK128U94
CK24J040 KB2024 05 13.09920019 02 00.43 +45 00 13.1 20.2 GXEK128I93
CK24J040 KB2024 05 13.10580019 02 00.02 +45 00 16.0 20.4 GXEK128I93
CK24J040 KB2024 05 13.11238619 01 59.61 +45 00 18.1 20.1 GXEK128I93
CK24J040 KC2024 05 13.26711419 01 49.96 +45 01 17.9 21.0 GVEK128H21
CK24J040 KC2024 05 13.26904219 01 49.86 +45 01 18.5 21.0 GVEK128H21
CK24J040 KC2024 05 13.27097119 01 49.72 +45 01 19.7 21.1 GVEK128H21
CK24J040 KC2024 05 13.27290019 01 49.59 +45 01 20.4 20.6 GVEK128H21
CK24J040 KC2024 05 13.27482819 01 49.46 +45 01 21.0 20.6 GVEK128H21
CK24J040 KC2024 05 13.41660819 01 40.616+45 02 16.80 20.38GVEK128I52
CK24J040 KC2024 05 13.42372119 01 40.141+45 02 19.46 19.87GVEK128I52
CK24J040 KC2024 05 13.43280719 01 39.565+45 02 22.70 20.16GVEK128I52
CK24J040 KC2024 05 13.44172719 01 38.996+45 02 26.52 20.18GVEK128I52
CK24J040 KB2024 05 13.66848 19 01 24.77 +45 03 52.7 20.0 GVEK128P13
CK24J040 KB2024 05 13.68113 19 01 23.96 +45 03 58.9 19.6 GVEK128P13
CK24J040 KB2024 05 13.69434 19 01 23.21 +45 04 02.9 19.7 GVEK128P13
CK24J040 DC2024 05 17.45906 18 57 17.72 +45 27 24.1 20.7 GVEK128695
CK24J040 DC2024 05 17.46372 18 57 17.40 +45 27 25.9 21.1 GVEK128695
CK24J040 DC2024 05 17.46837 18 57 17.09 +45 27 27.4 20.6 GVEK128695
CK24J040 KC2024 05 18.03662018 56 38.75 +45 30 48.2 20.1 GUEK128L06
CK24J040 KC2024 05 18.04220818 56 38.36 +45 30 50.1 20.2 GUEK128L06
CK24J040 KB2024 05 18.91038 18 55 39.02 +45 35 53.5 19.4 RZEK128106
CK24J040 KB2024 05 18.91683 18 55 38.48 +45 35 55.2 19.9 RZEK128106
CK24J040 KC2024 05 18.98455 18 55 33.82 +45 36 20.2 20.3 RqEK128L27
CK24J040 KC2024 05 19.00770 18 55 32.18 +45 36 27.6 20.4 RqEK128L27
CK24J040 KC2024 05 19.03086 18 55 30.51 +45 36 35.4 20.2 RqEK128L27
CK24J040 DC2024 05 19.30784 18 55 11.38 +45 38 10.6 20.5 GVEK128695
CK24J040 DC2024 05 19.31222 18 55 11.07 +45 38 12.1 20.5 GVEK128695
CK24J040 DC2024 05 19.31661 18 55 10.76 +45 38 13.7 20.8 GVEK128695
CK24J040 KB2024 05 20.12634 18 54 14.18 +45 42 47.8 qEK128Y66
CK24J040 KB2024 05 20.12808 18 54 14.02 +45 42 48.5 qEK128Y66
CK24J040 KB2024 05 20.12947 18 54 13.87 +45 42 48.8 qEK128Y66
CK24J040 KB2024 05 20.13086 18 54 13.78 +45 42 50.2 qEK128Y66
CK24J040 KB2024 05 20.85233 18 53 22.85 +45 46 47.6 20.5 GXEK128M45
CK24J040 KB2024 05 20.86467 18 53 21.96 +45 46 52.1 20.2 GXEK128M45
CK24J040 KB2024 05 22.12612 18 51 51.26 +45 53 40.6 qEK128Y66
CK24J040 B2024 05 22.12785 18 51 51.18 +45 53 41.4 qEK128Y66
CK24J040 KB2024 05 23.16800 18 50 35.11 +45 59 06.1 qEK128Y66
CK24J040 KB2024 05 23.16973 18 50 34.97 +45 59 06.8 qEK128Y66
CK24J040 KB2024 05 23.17112 18 50 34.87 +45 59 07.1 qEK128Y66
CK24J040 KB2024 05 23.17251 18 50 34.74 +45 59 07.8 qEK128Y66
CK24J040 KB2024 05 24.12641 18 49 24.08 +46 03 56.7 20.1 VqEK128Y66
CK24J040 KB2024 05 24.12849 18 49 23.93 +46 03 56.9 20.7 VqEK128Y66
CK24J040 KB2024 05 24.13058 18 49 23.77 +46 03 58.1 20.0 VqEK128Y66
CK24J040 KB2024 05 25.10565 18 48 10.50 +46 08 43.6 qEK128Y66
CK24J040 KB2024 05 25.10773 18 48 10.34 +46 08 44.4 qEK128Y66
CK24J040 KB2024 05 25.10982 18 48 10.18 +46 08 45.1 qEK128Y66
CK24J040 KB2024 05 26.10559 18 46 54.37 +46 13 27.7 qEK128Y66
CK24J040 KB2024 05 26.10768 18 46 54.19 +46 13 28.4 qEK128Y66
CK24J040 KB2024 05 26.10976 18 46 54.04 +46 13 28.9 qEK128Y66
CK24J040 KB2024 05 26.95999018 45 48.512+46 17 21.53 XEK128M45
CK24J040 KB2024 05 26.96548218 45 48.072+46 17 22.97 XEK128M45
CK24J040 KB2024 05 26.97124518 45 47.631+46 17 24.94 20.1 GXEK128M45
CK24J040 KB2024 05 27.10592 18 45 37.20 +46 18 01.5 qEK128Y66
CK24J040 KB2024 05 27.10835 18 45 36.96 +46 18 01.8 qEK128Y66
CK24J040 B2024 05 27.11043 18 45 36.82 +46 18 02.4 qEK128Y66
CK24J040 DC2024 05 28.34077 18 44 00.57 +46 23 24.5 20.6 GVEK128695
CK24J040 DC2024 05 28.34809 18 43 59.99 +46 23 26.4 20.6 GVEK128695
CK24J040 DC2024 05 28.35541 18 43 59.40 +46 23 28.2 20.6 GVEK128695
CK24J040 1C2024 05 28.43297818 43 53.231+46 23 47.76 19.81GVEK128G96
CK24J040 1C2024 05 28.43849618 43 52.784+46 23 49.27 19.90GVEK128G96
CK24J040 1C2024 05 28.44385818 43 52.381+46 23 50.71 19.83GVEK128G96
CK24J040 1C2024 05 28.44914918 43 51.953+46 23 52.12 20.10GVEK128G96
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, C.
Hogner, F. Ludwig, M. Hartmann, B. Stecklum. Measurer B. Stecklum.
1.34-m f/3 Schmidt + CCD.
106 Crni Vrh. Observer H. Mikuz. 0.60-m f/3.3 reflector + CMO.
695 Kitt Peak. Observer A. F. Tubbiolo. 2.3-m f/9 reflector + CCD.
734 Farpoint Observatory, Eskridge. Observers D. Cromer, G. Hug, D. Goodin,
R. Valentine, P. Lessig. Measurer G. Hug. 0.69-m f/3.54 reflector + CMO.
G96 Mt. Lemmon Survey. Observer K. W. Wierzchos. 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.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 Ritchey-Chretien + CCD.
H21 Astronomical Research Observatory, Westfield. Observer R. Holmes.
Measurers T. Linder, R. Holmes, L. Horn. 0.81-m f/4.0 astrograph + CCD,
0.76-m f/3.0 astrograph + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer T. Beuden. 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. 1.0-m
prime focus + CCD.
I93 St Pardon de Conques. Observer F. Losse. 0.40-m f/3.7 reflector + CMO.
L06 Sormano 2 Observatory, Bellagio Via Lattea. Observer G. Ventre. 0.36m
Schmidt Cassegrain + CCD.
L27 29PREMOTE Observatory, Dauban. Observer J.-F. Soulier. 0.25-m f/3.5
Newtonian reflector + CCD.
M45 Starhopper Observatory, Sfantu Gheorghe. Observer F. Ursache. 0.41-m
f/7.5 reflector + CMO.
P13 Baihuashan Observatory, Beijing. Observers Z. Wang, B. Liu. Measurer Z.
Wang. 0.28-m f/2.2 reflector + CMO.
U94 iTelescope Observatory, Beryl Junction. Observer H. Sato. 0.43-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
Y66 Two-Meter Twin Telescope, TTT2, Teide. Observer M. R. Alarcon.
Measurer M. Serra-Ricart. 0.80-m f/4.38 reflector + CMO.
Orbital elements:
C/2024 J4 (Lemmon)
Epoch 2024 Mar. 31.0 TT = JDT 2460400.5
T 2025 Apr. 27.73030 TT Rudenko
q 5.6884803 (2000.0) P Q
z +0.0010205 Peri. 128.04847 -0.46100729 -0.83741116
+/-0.0003426 Node 19.33753 -0.78017725 +0.22481167
e 0.9941949 Incl. 117.53540 +0.42284244 -0.49819902
>From 93 observations 2024 May 11-28, mean residual 0".3.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2024 04 30 19 13 53.1 +43 27 01 6.1147 6.2492 93.0 9.3 19.9
...
2024 05 15 18 59 59.9 +45 12 21 5.9524 6.2063 99.9 9.2 19.8
...
2024 05 23 18 50 47.5 +45 58 14 5.8768 6.1840 103.0 9.2 19.8
...
2024 05 29 18 43 08.4 +46 26 10 5.8264 6.1676 105.0 9.1 19.7
2024 05 30 18 41 48.4 +46 30 13 5.8186 6.1648 105.3 9.1 19.7
2024 05 31 18 40 27.6 +46 34 04 5.8109 6.1621 105.6 9.1 19.7
...
2024 06 06 18 32 04.7 +46 53 05 5.7686 6.1460 107.2 9.1 19.7
...
2024 06 14 18 20 16.3 +47 06 29 5.7228 6.1249 108.7 9.0 19.7
...
2024 06 29 17 57 16.7 +46 51 18 5.6716 6.0864 109.5 9.1 19.6
M. P. C. Staff (C) Copyright 2024 MPC M.P.E.C. 2024-K128
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