MPEC 2020-W170 : COMET P/2020 W1 (Rankin)
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M.P.E.C. 2020-W170 Issued 2020 November 27, 02:43 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 P/2020 W1 (Rankin)
D. Rankin reports the discovery of a comet in survey images obtained on
Nov 11. UT at the Mount Lemmon Survey (G96). He reports a condensed 4" coma
and a straight 5" tail at position angle 250 deg. Pre-discovery detections were
subsequently reported going back to Aug. 2020. Additional reports of cometary
features are as follows:
OC Date Reporter Coma Tail PA Exposures
H06 2020-11-17 H. Sato 8" 9x120s
204 2020-11-18 A. Aletti 6" 4" 270
Observations:
PK20W010 C2020 08 29.47465 03 35 28.33 +07 36 32.3 21.6 GVEW170G96
PK20W010 C2020 08 29.48035 03 35 28.39 +07 36 31.9 22.1 GVEW170G96
PK20W010 C2020 08 29.48604 03 35 28.44 +07 36 30.9 22.0 GVEW170G96
PK20W010 C2020 08 29.49173 03 35 28.50 +07 36 30.5 21.4 GVEW170G96
PK20W010 C2020 09 12.55821503 37 19.033+07 16 21.34 20.28GVEW170F52
PK20W010 C2020 09 12.57043203 37 19.075+07 16 19.79 20.18GVEW170F52
PK20W010 C2020 09 12.58272903 37 19.135+07 16 18.93 21.32GVEW170F52
PK20W010 C2020 09 12.59507303 37 19.141+07 16 18.33 20.32GVEW170F52
PK20W010 C2020 09 19.57410003 37 20.333+07 03 33.62 21.18GVEW170F51
PK20W010 C2020 10 09.51338503 34 12.374+06 20 52.18 21.52GVEW170F51
PK20W010 C2020 10 09.52462003 34 12.154+06 20 50.49 22.07GVEW170F51
PK20W010 C2020 10 09.53584803 34 11.932+06 20 48.94 21.45GVEW170F51
PK20W010 C2020 10 09.54714403 34 11.777+06 20 47.70 21.93GVEW170F51
PK20W010 C2020 10 16.33494 03 32 08.79 +06 05 23.0 21.5 GVEW170G96
PK20W010 C2020 10 16.34011 03 32 08.63 +06 05 22.8 21.5 GVEW170G96
PK20W010 C2020 10 16.34527 03 32 08.58 +06 05 22.3 21.0 GVEW170G96
PK20W010 C2020 10 19.48404403 31 03.092+05 58 21.60 21.04GVEW170F52
PK20W010 C2020 10 19.49586103 31 02.838+05 58 20.20 21.22GVEW170F52
PK20W010 C2020 10 19.50769103 31 02.576+05 58 18.25 21.55GVEW170F52
PK20W010 C2020 10 19.51947603 31 02.339+05 58 16.94 21.39GVEW170F52
PK20W010 C2020 10 24.51311803 29 08.409+05 47 23.24 21.06GVEW170F52
PK20W010 C2020 10 24.52483903 29 08.119+05 47 21.60 21.50GVEW170F52
PK20W010 C2020 10 24.53654403 29 07.839+05 47 20.17 21.87GVEW170F52
PK20W010 C2020 10 24.54821203 29 07.542+05 47 18.73 20.97GVEW170F52
PK20W010 C2020 11 05.44981 03 24 00.08 +05 23 54.0 21.9 GVEW170G96
PK20W010 C2020 11 05.46001 03 23 59.80 +05 23 52.1 VEW170G96
PK20W010 C2020 11 05.46512 03 23 59.70 +05 23 51.9 VEW170G96
PK20W010 KC2020 11 08.48191703 22 36.617+05 18 45.13 20.27GVEW170F52
PK20W010 C2020 11 12.47246403 20 45.197+05 12 35.80 21.09GVEW170F51
PK20W010 C2020 11 12.48457603 20 44.831+05 12 34.34 20.56GVEW170F51
PK20W010* C2020 11 16.34502203 18 56.65 +05 07 22.8 20.90GVEW170G96
PK20W010 C2020 11 16.35015503 18 56.49 +05 07 22.5 20.87GVEW170G96
PK20W010 C2020 11 16.35338803 18 56.509+05 07 22.46 20.09GVEW170F52
PK20W010 C2020 11 16.35529603 18 56.36 +05 07 22.1 20.23GVEW170G96
PK20W010 C2020 11 16.36043203 18 56.20 +05 07 21.5 20.54GVEW170G96
PK20W010 C2020 11 16.36428603 18 56.165+05 07 21.68 20.57GVEW170F52
PK20W010 C2020 11 16.37520803 18 55.901+05 07 21.16 21.12GVEW170F52
PK20W010 2C2020 11 16.96579403 18 39.369+05 06 37.69 20.3 GVEW170J04
PK20W010 2C2020 11 16.96909403 18 39.265+05 06 37.22 20.5 GVEW170J04
PK20W010 2C2020 11 16.97239703 18 39.221+05 06 37.46 20.1 GVEW170J04
PK20W010 KC2020 11 17.18771 03 18 33.21 +05 06 21.0 oEW170711
PK20W010 |C2020 11 17.19324 03 18 32.99 +05 06 21.5 VEW170H06
PK20W010 KC2020 11 17.19360 03 18 33.00 +05 06 21.5 oEW170711
PK20W010 |C2020 11 17.19797 03 18 32.86 +05 06 21.7 VEW170H06
PK20W010 |C2020 11 17.20272 03 18 32.71 +05 06 21.4 20.0 GVEW170H06
PK20W010 C2020 11 17.36470203 18 28.18 +05 06 09.1 20.46GVEW170I52
PK20W010 C2020 11 17.37655303 18 27.82 +05 06 08.2 20.59GVEW170I52
PK20W010 C2020 11 17.38561503 18 27.53 +05 06 07.3 20.52GVEW170I52
PK20W010 C2020 11 17.39487403 18 27.27 +05 06 06.4 20.60GVEW170I52
PK20W010 KC2020 11 17.86253 03 18 14.24 +05 05 33.5 20.0 rVEW170N51
PK20W010 KC2020 11 17.86624 03 18 14.13 +05 05 33.4 20.0 rVEW170N51
PK20W010 KC2020 11 17.86810 03 18 14.08 +05 05 33.3 20.1 rVEW170N51
PK20W010 KC2020 11 17.86996 03 18 14.06 +05 05 34.0 20.5 rVEW170N51
PK20W010 KC2020 11 17.94286103 18 12.08 +05 05 27.9 20.7 GVEW170L01
PK20W010 KC2020 11 17.96108903 18 11.58 +05 05 27.0 20.5 GVEW170L01
PK20W010 KC2020 11 18.19844 03 18 05.05 +05 05 11.6 oEW170711
PK20W010 KC2020 11 18.20599 03 18 04.83 +05 05 11.1 oEW170711
PK20W010 KC2020 11 18.95413 03 17 44.00 +05 04 20.4 VEW170204
PK20W010 1C2020 11 18.95898 03 17 43.95 +05 04 20.5 VEW170246
PK20W010 1C2020 11 18.96023 03 17 43.81 +05 04 20.2 VEW170246
PK20W010 1C2020 11 18.96115 03 17 43.87 +05 04 19.6 VEW170246
PK20W010 1C2020 11 18.96411 03 17 43.77 +05 04 19.1 20.9 GVEW170246
PK20W010 1C2020 11 18.96521 03 17 43.70 +05 04 18.7 VEW170246
PK20W010 KC2020 11 18.97671 03 17 43.33 +05 04 18.8 20.8 GVEW170204
PK20W010 KC2020 11 18.99928 03 17 42.70 +05 04 17.2 VEW170204
PK20W010 HC2020 11 20.29477 03 17 06.95 +05 02 56.9 21.0 RoEW170691
PK20W010 HC2020 11 20.30475 03 17 06.70 +05 02 56.5 21.2 RoEW170691
PK20W010 HC2020 11 20.31473 03 17 06.34 +05 02 56.0 20.6 RoEW170691
PK20W010 KC2020 11 26.18657303 14 28.19 +04 58 05.2 20.06GVEW170I52
PK20W010 KC2020 11 26.19603803 14 27.91 +04 58 04.5 20.37GVEW170I52
PK20W010 KC2020 11 26.20550303 14 27.63 +04 58 04.0 20.86GVEW170I52
Observer details:
204 Schiaparelli Observatory. Observer L. Buzzi. Measurer A. Aletti. 0.84-m
f/3.5 reflector + CCD.
246 Klet Observatory-KLENOT. Observers M. Tichy, J. Ticha. Measurer M.
Tichy. 1.06-m f/2.7 reflector + 2048x2048 CCD.
691 Steward Observatory, Kitt Peak-Spacewatch. Observer R. A. Mastaler.
0.9-m f/3 reflector + CCD.
711 McDonald Observatory, Fort Davis. Observers J. W. Kuehne, J. G. Ries, B.
P. Roman. Measurer J. G. Ries. 2.1-m reflector + CCD + focal reducer.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, K. Chambers, T. Lowe, A.
Schultz, M. Willman. Measurers S. Chastel, M. Huber, Y. Ramanjooloo, R.
Wainscoat, R. Weryk. 1.8-m Ritchey-Chretien + 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. Observers D. Rankin, K. W. Wierzchos, G. J. Leonard.
Measurers D. Rankin, B. Gray, F. C. Shelly, 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, R. L. Seaman, K. W.
Wierzchos. 1.5-m reflector + 10K CCD.
H06 iTelescope Observatory, Mayhill. Observer H. Sato. 0.43-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
I52 Steward Observatory, Mt. Lemmon Station. Observers G. J. Leonard, 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. 1.0-m reflector + CCD.
J04 ESA Optical Ground Station, Tenerife. Observer P. Ruiz. Measurers M.
Micheli, D. Koschny, L. Conversi, A. Knofel, M. Busch, E. Schwab. 1.0-m
f/4.4 reflector + CCD.
L01 Visnjan Observatory, Tican. Observers K. Korlevic, V. Dobos, D. Pujagic,
I. Lyon. Measurer K. Korlevic. 1.0-m f/2.9 reflector + CCD.
N51 GROWTH India Telescope, IAO, Hanle. Observers K. Sharma, H. Kumar, J.
Stanzin, V. Bhalerao, G. C. Anupama, S. Barway. Measurers K. Sharma, B.
T. Bolin. 0.70-m f/6.5 Corrected Dall-Kirkham + CCD.
Orbital elements:
P/2020 W1 (Rankin)
Epoch 2020 Apr. 21.0 TT = JDT 2458960.5
T 2020 Apr. 4.25226 TT Veres
q 5.2877303 (2000.0) P Q
n 0.05114869 Peri. 264.78018 +0.85973413 -0.48673055
a 7.1875306 Node 124.25854 +0.51042261 +0.80809219
e 0.2643189 Incl. 10.79210 +0.01805495 +0.33178364
P 19.3
From 71 observations 2020 Aug. 29-Nov. 26, mean residual 0".4.
P/2020 W1 (Rankin)
Epoch 2039 July 31.0 TT = JDT 2466000.5
T 2039 July 31.01389 TT Veres
q 5.2823269 (2000.0) P Q
n 0.05128019 Peri. 265.23891 +0.85730464 -0.49091927
a 7.1752374 Node 124.08225 +0.51443042 +0.80536699
e 0.2638115 Incl. 10.78669 +0.01975115 +0.33223830
P 19.2
From 71 observations 2020 Aug. 29-Nov. 26, mean residual 0".4.
P/2020 W1 (Rankin)
Epoch 2020 Dec. 17.0 TT = JDT 2459200.5
T 2020 Apr. 4.60732 TT Veres
q 5.2878338 (2000.0) P Q
n 0.05108417 Peri. 264.81224 +0.85948190 -0.48717437
a 7.1935817 Node 124.25610 +0.51084115 +0.80782549
e 0.2649234 Incl. 10.79210 +0.01822599 +0.33178173
P 19.3
From 71 observations 2020 Aug. 29-Nov. 26, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2020 10 28 03 27 42.9 +05 40 06 4.4052 5.3468 159.4 3.7 20.5
...
2020 11 12 03 20 58.5 +05 13 17 4.3857 5.3555 167.2 2.3 20.5
...
2020 11 20 03 17 15.1 +05 03 15 4.4031 5.3604 164.2 2.9 20.5
...
2020 11 26 03 14 33.0 +04 58 14 4.4287 5.3642 159.5 3.7 20.5
2020 11 27 03 14 06.8 +04 57 37 4.4340 5.3649 158.6 3.8 20.5
2020 11 28 03 13 40.9 +04 57 04 4.4396 5.3655 157.7 4.0 20.5
...
2020 12 04 03 11 12.4 +04 55 12 4.4790 5.3694 152.0 4.9 20.6
...
2020 12 12 03 08 17.9 +04 56 36 4.5466 5.3748 144.0 6.2 20.6
...
2020 12 27 03 04 26.9 +05 11 32 4.7144 5.3852 128.8 8.2 20.7
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-W170
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