M.P.E.C. 2020-A112 Issued 2020 January 10, 20:12 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/2019 Y4 (ATLAS)
This object was reported on 2019 Dec. 28 UT as possibly cometary
in appearance by L. Denneau on behalf of ATLAS-MLO (T08) and placed on
PCCP. Stacked observations taken on Dec. 31 by L. Buzzi at Schiaparelli
Observatory (204) revealed a 10" coma elongated toward the north-west.
The orbital elements for this object are very similar to those for C/1844 Y1
(Great Comet). The suggestion was initially made by M. Meyer when the
2019-2020 arc was ~three days. Additional reports of cometary features
are as follows:
OC Date Reporter Coma Tail PA Exposures
Q11 Dec. 31 H. Sato 18" 10x90s
K88 Jan. 1 K. Sarneczky 8" 3x120s
G40 Jan. 1 B. Lutkenhoener 10"
T08 Dec. 28 H. Flewelling 2"
T12 Jan. 1 D. J. Tholen 315
203 Jan. 6 G. Galli 4"
I89 Jan. 6 E. Bryssinck 21" 17" 280-287
A71 Jan. 3 M. Jaeger 10" 25" 270-275
H06 Jan. 4 H. Sato 8" 15" 280 10x60s
A77 Jan. 8 F. Kugel 20" 30" 280
G40 Jan. 9 G. Gasparovic 10" 20" 10 23x50s
Observations:
CK19Y040* C2019 12 28.59683411 44 23.74 +30 49 19.4 19.63oVEA112T08
CK19Y040 C2019 12 28.60028711 44 23.80 +30 49 22.0 19.61oVEA112T08
CK19Y040 C2019 12 28.60534311 44 23.83 +30 49 25.1 19.52oVEA112T08
CK19Y040 C2019 12 28.60822611 44 24.05 +30 49 27.0 19.33oVEA112T08
CK19Y040 C2019 12 28.62320111 44 24.58 +30 49 38.1 19.53oVEA112T08
CK19Y040 C2019 12 28.62504611 44 24.54 +30 49 40.3 19.26oVEA112T08
CK19Y040 C2019 12 29.00782 11 44 37.36 +30 54 26.9 18.7 VVEA112033
CK19Y040 C2019 12 29.00862 11 44 37.40 +30 54 27.5 18.5 VVEA112033
CK19Y040 C2019 12 29.00941 11 44 37.43 +30 54 28.0 18.7 VVEA112033
CK19Y040 C2019 12 29.01043 11 44 37.46 +30 54 29.0 18.7 VVEA112033
CK19Y040 IC2019 12 29.12709311 44 41.21 +30 55 58.8 19.3 GVEA112L01
CK19Y040 IC2019 12 29.13183811 44 41.39 +30 56 02.6 19.3 GVEA112L01
CK19Y040 C2019 12 29.17018111 44 42.58 +30 56 31.9 19.5 GVEA112L01
CK19Y040 C2019 12 29.17174711 44 42.68 +30 56 32.6 19.6 GVEA112L01
CK19Y040 C2019 12 29.19196 11 44 43.30 +30 56 47.5 18.6 VVEA112033
CK19Y040 C2019 12 29.19275 11 44 43.32 +30 56 48.0 18.6 VVEA112033
CK19Y040 C2019 12 29.19354 11 44 43.33 +30 56 48.7 19.0 VVEA112033
CK19Y040 C2019 12 29.19484 11 44 43.38 +30 56 49.8 18.8 VVEA112033
CK19Y040 KC2019 12 30.09442511 45 12.75 +31 08 25.5 17.9 GVEA112C95
CK19Y040 KC2019 12 30.10602611 45 13.11 +31 08 34.2 18.5 GVEA112C95
CK19Y040 KC2019 12 30.23141 11 45 16.94 +31 10 12.6 20.1 GVEA112K87
CK19Y040 KC2019 12 30.23558 11 45 17.06 +31 10 15.9 20.1 GVEA112K87
CK19Y040 KC2019 12 30.24703 11 45 17.48 +31 10 24.7 19.7 GVEA112K87