MPEC 2020-C111 : COMET C/2020 B3 (Rankin)
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Read MPEC 2020-C110
M.P.E.C. 2020-C111 Issued 2020 February 6, 20:06 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. 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/2020 B3 (Rankin)
This object was reported on Jan. 29 UT as a comet by D. Rankin on behalf
of the Mt. Lemmon Survey (G96), noting a diffuse 12" coma and 9" tail at
PA 270. Following it being posted to MPC PCCP, R. Weryk reported on Jan. 30
his finding prediscovery images taken on Jan. 25 by Pan-STARRS 2 (F52),
displaying a 3".4 coma. Additional reports of cometary features are as
follows:
OC Date Reporter Coma Tail PA Exposures
Q62 Jan. 29 H. Sato 10" 14x60s
W87 Jan. 30 P. Breitenstein 280
G96 Jan. 31 D. Rankin 10" 12" 270
691 Jan. 31 J. V. Scotti 8" 2x150s
204 Feb. 2 L. Buzzi 10" 100x30s
X02 Feb. 3 E. Guido 5" 16x120s
204 Feb. 4 L. Buzzi 10" 196x20s
Observations:
CK20B030 C2020 01 25.55330912 21 25.431-08 18 58.85 20.5 GVEC111F52
CK20B030 C2020 01 25.56506412 21 25.634-08 18 57.56 20.5 GVEC111F52
CK20B030 C2020 01 25.57681012 21 25.876-08 18 56.40 20.5 GVEC111F52
CK20B030 C2020 01 25.58863712 21 26.092-08 18 54.89 20.5 GVEC111F52
CK20B030* C2020 01 29.44428 12 22 36.26 -08 10 01.5 19.3 GVEC111G96
CK20B030 C2020 01 29.44943 12 22 36.36 -08 10 00.9 19.5 GVEC111G96
CK20B030 C2020 01 29.45461 12 22 36.44 -08 10 00.2 19.4 GVEC111G96
CK20B030 C2020 01 29.45977 12 22 36.52 -08 09 59.1 19.4 GVEC111G96
CK20B030 C2020 01 29.50601 12 22 37.25 -08 09 51.9 19.6 GVEC111G96
CK20B030 C2020 01 29.52031 12 22 37.45 -08 09 49.8 19.5 GVEC111G96
CK20B030 C2020 01 29.53485 12 22 37.65 -08 09 47.4 19.5 GVEC111G96
CK20B030 1C2020 01 29.75247 12 22 41.21 -08 09 09.9 VEC111Q62
CK20B030 1C2020 01 29.75794 12 22 41.30 -08 09 08.7 19.2 GVEC111Q62
CK20B030 KC2020 01 30.08058812 22 46.44 -08 08 20.0 19.3 GVEC111C95
CK20B030 KC2020 01 30.09554312 22 46.66 -08 08 17.8 18.7 GVEC111C95
CK20B030 KC2020 01 30.11047312 22 46.85 -08 08 15.0 18.7 GVEC111C95
CK20B030 KC2020 01 30.16788612 22 47.73 -08 08 06.1 19.7 GVEC111L01
CK20B030 KC2020 01 30.19884612 22 48.25 -08 08 01.3 19.9 GVEC111L01
CK20B030 KC2020 01 30.26256 12 22 49.37 -08 07 47.4 19.2 VqEC111I47
CK20B030 KC2020 01 30.27578 12 22 49.58 -08 07 45.6 19.4 VqEC111I47
CK20B030 KC2020 01 30.27883 12 22 49.60 -08 07 44.2 19.5 RtEC111W87
CK20B030 KC2020 01 30.28320 12 22 49.67 -08 07 43.6 19.8 RtEC111W87
CK20B030 KC2020 01 30.28743 12 22 49.70 -08 07 43.3 19.3 VqEC111I47
CK20B030 KC2020 01 30.28755 12 22 49.74 -08 07 42.9 20.0 RtEC111W87
CK20B030 KC2020 01 30.29192 12 22 49.80 -08 07 42.0 19.7 RtEC111W87
CK20B030 C2020 01 31.50776 12 23 07.66 -08 04 18.9 19.4 GVEC111G96
CK20B030 C2020 01 31.52213 12 23 07.80 -08 04 16.4 19.3 GVEC111G96
CK20B030 C2020 01 31.53638 12 23 07.98 -08 04 14.1 19.7 GVEC111G96
CK20B030 KC2020 01 31.53849 12 23 08.11 -08 04 12.4 19.4 RoEC111691
CK20B030 KC2020 01 31.54367 12 23 08.11 -08 04 12.0 19.2 RoEC111691
CK20B030 KC2020 01 31.54886 12 23 08.15 -08 04 11.8 19.1 RoEC111691
CK20B030 KC2020 02 02.17861 12 23 29.94 -07 59 12.1 20.2 GVEC111204
CK20B030 KC2020 02 02.19887 12 23 30.19 -07 59 08.0 VEC111204
CK20B030 KC2020 02 02.38001 12 23 32.37 -07 58 31.9 20.0 VqEC111850
CK20B030 KC2020 02 02.39810 12 23 32.77 -07 58 29.0 19.3 VqEC111850
CK20B030 KC2020 02 03.19575 12 23 42.42 -07 55 48.8 19.8 GVEC111X02
CK20B030 KC2020 02 03.21124 12 23 42.57 -07 55 45.1 20.0 GVEC111X02
CK20B030 KC2020 02 03.29919 12 23 43.57 -07 55 30.5 20.3 VqEC111850
CK20B030 KC2020 02 03.31716 12 23 43.63 -07 55 26.9 20.2 VqEC111850
CK20B030 KC2020 02 04.07927 12 23 51.95 -07 52 50.6 20.0 GVEC111204
CK20B030 KC2020 02 04.10592 12 23 52.15 -07 52 45.9 VEC111204
CK20B030 C2020 02 05.41889 12 24 05.43 -07 48 02.4 19.8 GVEC111G96
CK20B030 C2020 02 05.43365 12 24 05.52 -07 47 58.6 19.6 GVEC111G96
CK20B030 C2020 02 05.44857 12 24 05.66 -07 47 55.3 19.3 GVEC111G96
CK20B030 C2020 02 06.34288 12 24 13.68 -07 44 32.9 19.3 GVEC111I52
CK20B030 C2020 02 06.35646 12 24 13.77 -07 44 30.4 20.4 GVEC111I52
Observer details:
204 Schiaparelli Observatory. Observers L. Buzzi, A. Aletti. Measurer A.
Aletti. 0.84-m f/3.5 reflector + CCD, 0.36-m f/6 reflector + CCD.
691 Steward Observatory, Kitt Peak-Spacewatch. Observer J. V. Scotti. 0.9-m
f/3 reflector + CCD.
850 Cordell-Lorenz Observatory, Sewanee. Observers D. T. Durig, T. P.
McMichael, H. H. Sutherland, A. C. Truelove. 0.3-m f/7.8 Schmidt-Cassegrain
+ 2758x2208 CCD.
C95 SATINO Remote Observatory, Haute Provence. Observer J. Jahn. 0.60-m f/3.2
Newtonian reflector + CCD.
F52 Pan-STARRS 2, Haleakala. Observers J. Bulger, K. Chambers, T. Dukes, T.
Lowe, A. Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y.
Ramanjooloo, R. Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + CCD.
G96 Mt. Lemmon Survey. Observer D. Rankin. Measurers E. J. Christensen, G. A.
Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H. Groeller, R. A. Kowalski,
S. M. Larson, G. J. Leonard, T. A. Pruyne, D. Rankin, R. L. Seaman, F. C.
Shelly, K. W. Wierzchos. 1.5-m reflector + 10K CCD.
I47 Pierre Auger Observatory, Malargue. Observer M. Masek. 0.3-m f/6.8
reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer T. A. Pruyne. Measurers
E. J. Christensen, G. A. Farneth, D. C. Fuls, A. R. Gibbs, A. D. Grauer, H.
Groeller, R. A. Kowalski, S. M. Larson, G. J. Leonard, T. A. Pruyne, D.
Rankin, R. L. Seaman, F. C. Shelly, K. W. Wierzchos. 1.0-m reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, F. Valentine. Measurer
K. Korlevic. 1.0-m f/2.9 reflector + CCD.
Q62 iTelescope Observatory, Siding Spring. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
W87 Cerro Tololo-LCO C. Observer P. Breitenstein. 1.0-m Ritchey-Chretien +
CCD.
X02 Telescope Live, El Sauce. Observer E. Guido. 0.6-m f/6.5 astrograph + CCD.
Orbital elements:
C/2020 B3 (Rankin)
Epoch 2019 Oct. 4.0 TT = JDT 2458760.5
T 2019 Oct. 22.88444 TT Bell
q 3.3555463 (2000.0) P Q
z +0.0045064 Peri. 325.92425 -0.87698517 -0.47918215
+/-0.0024247 Node 185.79762 +0.48044894 -0.87568131
e 0.9848784 Incl. 20.75545 -0.00811291 -0.05972202
From 44 observations 2020 Jan. 25-Feb. 6, mean residual 0".5.
C/2020 B3 (Rankin)
Epoch 2020 May 31.0 TT = JDT 2459000.5
T 2019 Oct. 22.86080 TT Bell
q 3.3555579 (2000.0) P Q
z +0.0046259 Peri. 325.92292 -0.87696224 -0.47922451
+/-0.0024247 Node 185.79617 +0.48049061 -0.87566060
e 0.9844776 Incl. 20.75765 -0.00812417 -0.05968568
From 44 observations 2020 Jan. 25-Feb. 6, mean residual 0".5.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2020 01 07 12 12 22.0 -08 30 27 3.1261 3.4294 99.6 16.4 19.3
...
2020 01 22 12 20 07.3 -08 25 06 2.9549 3.4607 113.0 15.2 19.2
...
2020 01 30 12 22 45.1 -08 08 31 2.8723 3.4795 120.7 14.1 19.2
...
2020 02 05 12 24 01.4 -07 49 32 2.8161 3.4946 126.6 13.1 19.2
2020 02 06 12 24 10.6 -07 45 50 2.8073 3.4972 127.6 12.9 19.2
2020 02 07 12 24 18.9 -07 41 58 2.7987 3.4998 128.6 12.7 19.2
...
2020 02 13 12 24 48.2 -07 15 36 2.7505 3.5159 134.7 11.5 19.2
...
2020 02 21 12 24 35.5 -06 32 13 2.6972 3.5386 143.2 9.6 19.1
...
2020 03 07 12 21 58.0 -04 49 25 2.6381 3.5847 159.5 5.6 19.2
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-C111
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