MPEC 2020-M26 : COMET P/2020 K9 (Lemmon-PANSTARRS)
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M.P.E.C. 2020-M26 Issued 2020 June 18, 19:41 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 K9 (Lemmon-PANSTARRS)
This object was initially reported by the Mount Lemmon Survey (G96) on
May 22 UT as part of their incidental astrometry. It was independently reported
on May 26 by Pan-STARRS 1 (F51) as an NEO candidate. On June 16, G. V. Williams
communicated that he was able to link the G96 and F51 tracklets, along with
that of an object submitted by ATLAS (T05) on May 29 also as an NEO candidate.
None of the tracklets met the minimum requirements to appear on the NEOCP, but
Williams was able to compute a possible comet-like orbit and the object was then
listed on the PCCP. In a set of 12-stacked 60 second images taken on June 16
from iTelescope (Q62), H. Sato noted the object was strongly condensed with an
asymmetrical coma. R. Weryk examined images taken by the Canada-France-Hawaii
Telescope (568) on June 17, and reported that the object was clearly cometary
in appearance with a FWHM of 1".83 +/- 0".02 versus that of neighboring stars
(0".93 +/- 0".04).
Observations:
PK20K090* C2020 05 22.43234 21 34 47.09 +02 38 13.0 20.5 GVEM026G96
PK20K090 C2020 05 22.43752 21 34 47.26 +02 38 14.3 20.6 GVEM026G96
PK20K090 C2020 05 22.44269 21 34 47.45 +02 38 15.8 20.7 GVEM026G96
PK20K090 C2020 05 22.44788 21 34 47.63 +02 38 17.0 20.7 GVEM026G96
PK20K090 C2020 05 26.58036121 37 12.942+02 54 17.96 19.54wUEM026F51
PK20K090 C2020 05 26.59479521 37 13.418+02 54 21.16 19.68wUEM026F51
PK20K090 C2020 05 26.60203721 37 13.645+02 54 22.72 19.59wUEM026F51
PK20K090 C2020 05 29.54392421 38 48.12 +03 04 53.7 19.30cVEM026T05
PK20K090 C2020 05 29.54808221 38 48.32 +03 04 54.9 19.14cVEM026T05
PK20K090 C2020 05 29.55540021 38 48.46 +03 04 56.2 19.40cVEM026T05
PK20K090 C2020 05 29.56690521 38 48.77 +03 04 58.2 19.19cVEM026T05
PK20K090 C2020 06 14.55674821 45 02.552+03 46 35.41 19.7 GVEM026F51
PK20K090 C2020 06 14.55942921 45 02.596+03 46 35.47 19.2 GVEM026F51
PK20K090 1C2020 06 16.73668 21 45 33.90 +03 49 54.0 VEM026Q62
PK20K090 1C2020 06 16.73965 21 45 33.94 +03 49 54.1 VEM026Q62
PK20K090 1C2020 06 16.74263 21 45 33.99 +03 49 54.2 19.4 GVEM026Q62
PK20K090 ^C2020 06 17.54288221 45 44.364+03 50 53.09 19.40GVEM026568
PK20K090 ^C2020 06 17.54405921 45 44.379+03 50 53.18 19.43GVEM026568
PK20K090 ^C2020 06 17.54523721 45 44.393+03 50 53.28 19.45GVEM026568
PK20K090 KC2020 06 18.35599421 45 54.18 +03 51 48.9 19.4 GVEM026858
PK20K090 KC2020 06 18.38221521 45 54.44 +03 51 50.9 19.5 GVEM026858
PK20K090 KC2020 06 18.40982121 45 54.73 +03 51 52.9 18.9 GVEM026858
Observer details:
568 Mauna Kea. Observers R. Wainscoat, C. Wipper, T. Burdullis. Measurers R.
Weryk, R. Wainscoat. 3.6-m Canada-France-Hawaii Telescope + CCD.
858 Tebbutt Observatory, Edgewood. Observer F. B. Zoltowski. 0.51-m Schmidt-
Cassegrain + CCD.
F51 Pan-STARRS 1, Haleakala. Observers J. Bulger, T. Lowe, A. Schultz, M.
Willman, K. Chambers. Measurers K. Chambers, S. Chastel, T. de Boer, L.
Denneau, J. Fairlamb, H. Flewelling, M. Huber, C.-C. Lin, E. Magnier, 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.
Q62 iTelescope Observatory, Siding Spring. Observer H. Sato. 0.51-m f/6.8
astrograph + CCD + f/4.5 focal reducer.
T05 ATLAS-HKO, Haleakala. Observers L. Denneau, J. Tonry, A. Heinze, H.
Weiland, H. Flewelling. Measurers L. Denneau, J. Tonry, A. Heinze, H.
Weiland, H. Flewelling, B. Stalder, A. Fitzsimmons, J. Robinson, N.
Erasmus. 0.5-m reflector + CCD.
Orbital elements:
P/2020 K9 (Lemmon-PANSTARRS)
Epoch 2021 Jan. 26.0 TT = JDT 2459240.5
T 2021 Feb. 13.60346 TT Rudenko
q 2.8423749 (2000.0) P Q
n 0.11478347 Peri. 197.42919 +0.99220527 -0.08172817
a 4.1932410 Node 166.19916 +0.08341941 +0.99641360
e 0.3221532 Incl. 23.22517 -0.09257376 +0.02191894
P 8.59
From 22 observations 2020 May 22-June 18, mean residual 0".3.
P/2020 K9 (Lemmon-PANSTARRS)
Epoch 2029 Sept. 21.0 TT = JDT 2462400.5
T 2029 Sept. 22.67371 TT Rudenko
q 2.8594162 (2000.0) P Q
n 0.11415872 Peri. 197.46836 +0.99217090 -0.08221221
a 4.2085257 Node 166.19013 +0.08395489 +0.99636071
e 0.3205658 Incl. 23.19392 -0.09245797 +0.02250527
P 8.63
From 22 observations 2020 May 22-June 18, mean residual 0".3.
P/2020 K9 (Lemmon-PANSTARRS)
Epoch 2020 May 31.0 TT = JDT 2459000.5
T 2021 Feb. 13.26431 TT Rudenko
q 2.8426330 (2000.0) P Q
n 0.11456202 Peri. 197.34758 +0.99231831 -0.08050144
a 4.1986429 Node 166.21199 +0.08220297 +0.99651185
e 0.3229639 Incl. 23.21236 -0.09245018 +0.02199226
P 8.60
From 22 observations 2020 May 22-June 18, mean residual 0".3.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2020 05 19 21 32 35.5 +02 23 59 3.0241 3.2193 91.8 18.3 20.0
...
2020 06 03 21 40 56.5 +03 19 19 2.7917 3.1832 103.4 18.1 19.8
...
2020 06 11 21 44 00.7 +03 39 55 2.6720 3.1644 109.9 17.6 19.6
...
2020 06 17 21 45 37.4 +03 50 13 2.5853 3.1505 114.9 17.0 19.5
2020 06 18 21 45 49.9 +03 51 27 2.5711 3.1483 115.7 16.9 19.5
2020 06 19 21 46 01.3 +03 52 32 2.5571 3.1460 116.6 16.8 19.5
...
2020 06 25 21 46 47.5 +03 55 48 2.4751 3.1324 121.8 16.0 19.4
...
2020 07 03 21 46 48.9 +03 50 44 2.3727 3.1146 129.0 14.7 19.3
...
2020 07 18 21 43 49.4 +03 08 14 2.2084 3.0824 143.1 11.4 19.1
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-M26
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