MPEC 2020-A112 : COMET C/2019 Y4 (ATLAS)
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Read MPEC 2020-A113
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
CK19Y040 |C2019 12 30.52186 11 45 26.21 +31 14 03.6 VEA112H06
CK19Y040 |C2019 12 30.52641 11 45 26.34 +31 14 06.7 19.4 GVEA112H06
CK19Y040 KC2019 12 30.97452 11 45 40.71 +31 20 03.0 19.8 GVEA112595
CK19Y040 KC2019 12 30.99035 11 45 41.08 +31 20 16.4 19.7 GVEA112595
CK19Y040 KC2019 12 30.99321 11 45 41.08 +31 20 17.6 18.4 VSEA112C43
CK19Y040 KC2019 12 30.99753 11 45 41.29 +31 20 22.7 19.4 VSEA112C43
CK19Y040 KC2019 12 30.99827 11 45 41.38 +31 20 21.6 19.5 GVEA112595
CK19Y040 KC2019 12 31.00176 11 45 41.40 +31 20 25.8 19.2 VSEA112C43
CK19Y040 C2019 12 31.13813 11 45 45.57 +31 22 13.9 20.2 VVEA112033
CK19Y040 C2019 12 31.13869 11 45 45.61 +31 22 14.5 19.9 VVEA112033
CK19Y040 C2019 12 31.13925 11 45 45.62 +31 22 14.9 19.5 VVEA112033
CK19Y040 C2019 12 31.14037 11 45 45.67 +31 22 15.7 19.8 VVEA112033
CK19Y040 KC2019 12 31.19678 11 45 47.36 +31 23 02.5 VEA112204
CK19Y040 KC2019 12 31.20806 11 45 47.69 +31 23 11.0 VEA112204
CK19Y040 KC2019 12 31.21934 11 45 48.02 +31 23 20.4 18.9 GVEA112204
CK19Y040 kC2019 12 31.36456 11 45 52.72 +31 25 18.6 18.8 RoEA112H06
CK19Y040 kC2019 12 31.36585 11 45 52.74 +31 25 19.5 19.1 RoEA112H06
CK19Y040 pC2019 12 31.53239 11 45 57.68 +31 27 35.1 18.7 VqEA112H06
CK19Y040 pC2019 12 31.53635 11 45 57.84 +31 27 39.0 18.7 VqEA112H06
CK19Y040 KC2019 12 31.73353 11 46 04.01 +31 30 19.0 18.1 RqEA112Q11
CK19Y040 KC2019 12 31.74421 11 46 04.33 +31 30 27.7 qEA112Q11
CK19Y040 KC2019 12 31.75491 11 46 04.63 +31 30 36.6 qEA112Q11
CK19Y040 KC2020 01 01.06957 11 46 14.14 +31 34 55.2 18.6 RqEA112C10
CK19Y040 KC2020 01 01.08333 11 46 14.55 +31 35 06.6 18.9 RqEA112C10
CK19Y040 KC2020 01 01.11675 11 46 15.53 +31 35 35.0 20.0 RoEA112K88
CK19Y040 KC2020 01 01.11869 11 46 15.57 +31 35 36.1 18.8 RqEA112C10
CK19Y040 KC2020 01 01.12098 11 46 15.66 +31 35 38.7 20.0 RoEA112K88
CK19Y040 KC2020 01 01.12521 11 46 15.81 +31 35 41.9 19.6 RoEA112K88
CK19Y040 KC2020 01 01.13366 11 46 16.01 +31 35 48.9 19.1 RoEA112K88
CK19Y040 9C2020 01 01.16012 11 46 16.88 +31 36 11.7 18.8 GVEA112G40
CK19Y040 9C2020 01 01.17028 11 46 17.23 +31 36 20.3 19.3 GVEA112G40
CK19Y040 9C2020 01 01.18021 11 46 17.46 +31 36 28.5 19.1 GVEA112G40
CK19Y040 KC2020 01 01.19469 11 46 17.78 +31 36 39.6 18.7 RqEA112L27
CK19Y040 C2020 01 01.20091 11 46 17.95 +31 36 43.9 20.3 VVEA112033
CK19Y040 C2020 01 01.20147 11 46 17.97 +31 36 44.4 20.2 VVEA112033
CK19Y040 C2020 01 01.20204 11 46 17.99 +31 36 44.8 20.3 VVEA112033
CK19Y040 KC2020 01 01.21214 11 46 18.31 +31 36 54.2 18.7 RqEA112L27
CK19Y040 KC2020 01 01.22960 11 46 18.81 +31 37 08.8 18.8 RqEA112L27
CK19Y040 KC2020 01 01.48856 11 46 26.56 +31 40 44.8 19.1 RqEA112H36
CK19Y040 KC2020 01 01.49626 11 46 26.79 +31 40 51.4 18.5 RqEA112H36
CK19Y040 KC2020 01 01.50375 11 46 27.02 +31 40 57.7 18.4 RqEA112H36
CK19Y040 C2020 01 01.59986511 46 29.978+31 42 19.31 20.38GVEA112T12
CK19Y040 C2020 01 01.60080111 46 30.007+31 42 20.12 20.43GVEA112T12
CK19Y040 C2020 01 01.60177111 46 30.032+31 42 20.93 20.48GVEA112T12
CK19Y040 C2020 01 01.60275911 46 30.060+31 42 21.76 20.39GVEA112T12
CK19Y040 C2020 01 01.60372011 46 30.087+31 42 22.56 20.52GVEA112T12
CK19Y040 C2020 01 01.62012611 46 30.57 +31 42 36.9 19.63oVEA112T08
CK19Y040 C2020 01 01.62341411 46 30.60 +31 42 39.8 19.48oVEA112T08
CK19Y040 C2020 01 01.63149611 46 30.87 +31 42 46.3 19.30oVEA112T08
CK19Y040 C2020 01 01.64160411 46 31.15 +31 42 53.9 19.37oVEA112T08
CK19Y040 KC2020 01 01.66206 11 46 32.00 +31 43 10.5 18.1 RqEA112Q11
CK19Y040 KC2020 01 01.66784 11 46 32.17 +31 43 15.4 qEA112Q11
CK19Y040 KC2020 01 01.67401 11 46 32.33 +31 43 20.3 qEA112Q11
CK19Y040 C2020 01 02.00133 11 46 41.85 +31 47 55.8 20.0 VVEA112033
CK19Y040 C2020 01 02.00190 11 46 41.86 +31 47 56.4 19.9 VVEA112033
CK19Y040 C2020 01 02.00245 11 46 41.88 +31 47 56.7 20.1 VVEA112033
CK19Y040 C2020 01 02.00850 11 46 42.07 +31 48 02.4 VEA112246
CK19Y040 C2020 01 02.00980 11 46 42.13 +31 48 03.8 VEA112246
CK19Y040 C2020 01 02.01052 11 46 42.12 +31 48 03.9 19.4 GVEA112246
CK19Y040 C2020 01 02.01115 11 46 42.16 +31 48 05.5 VEA112246
CK19Y040 C2020 01 02.01185 11 46 42.22 +31 48 05.6 VEA112246
CK19Y040 C2020 01 02.01361 11 46 42.22 +31 48 06.9 VEA112246
CK19Y040 C2020 01 02.01491 11 46 42.27 +31 48 08.0 VEA112246
CK19Y040 C2020 01 02.01635 11 46 42.32 +31 48 08.2 VEA112246
CK19Y040 KC2020 01 02.06213 11 46 43.59 +31 48 47.6 18.9 GVEA112K38
CK19Y040 KC2020 01 02.06547 11 46 43.71 +31 48 50.8 19.4 GVEA112L06
CK19Y040 KC2020 01 02.07647 11 46 44.01 +31 49 00.4 19.5 GVEA112L06
CK19Y040 KC2020 01 02.07738 11 46 44.03 +31 49 00.7 18.9 GVEA112K38
CK19Y040 KC2020 01 02.07741 11 46 44.03 +31 49 01.8 20.3 RoEA112K88
CK19Y040 KC2020 01 02.08586 11 46 44.27 +31 49 09.0 19.9 RoEA112K88
CK19Y040 KC2020 01 02.08746 11 46 44.33 +31 49 09.7 19.4 GVEA112L06
CK19Y040 KC2020 01 02.09264 11 46 44.41 +31 49 14.4 18.9 GVEA112K38
CK19Y040 KC2020 01 02.09431 11 46 44.50 +31 49 16.2 20.0 RoEA112K88
CK19Y040 C2020 01 02.14388 11 46 45.86 +31 49 57.4 19.7 VVEA112033
CK19Y040 C2020 01 02.14444 11 46 45.88 +31 49 58.2 19.5 VVEA112033
CK19Y040 C2020 01 02.14500 11 46 45.89 +31 49 58.4 19.3 VVEA112033
CK19Y040 C2020 01 02.14561 11 46 45.88 +31 49 59.1 19.3 VVEA112033
CK19Y040 C2020 01 02.82876 11 47 05.70 +31 59 48.0 19.4 RUEA112C42
CK19Y040 C2020 01 02.84017 11 47 06.02 +31 59 59.8 19.2 RUEA112C42
CK19Y040 C2020 01 02.85162 11 47 06.41 +32 00 09.4 19.5 RUEA112C42
CK19Y040 KC2020 01 03.03362 11 47 11.40 +32 02 46.9 19.2 VtEA112A71
CK19Y040 KC2020 01 03.04456 11 47 11.69 +32 02 55.6 19.3 VtEA112A71
CK19Y040 KC2020 01 03.05561 11 47 11.97 +32 03 06.2 19.1 VtEA112A71
CK19Y040 KC2020 01 03.21745 11 47 16.37 +32 05 27.9 18.7 GVEA112I89
CK19Y040 KC2020 01 03.22669 11 47 16.66 +32 05 35.8 18.6 GVEA112I89
CK19Y040 C2020 01 03.43289 11 47 22.45 +32 08 38.2 18.8 GVEA112I52
CK19Y040 C2020 01 03.45047 11 47 22.98 +32 08 53.6 18.9 GVEA112I52
CK19Y040 C2020 01 03.46188 11 47 23.29 +32 09 03.8 19.2 GVEA112G96
CK19Y040 C2020 01 03.46707 11 47 23.42 +32 09 08.2 18.9 GVEA112G96
CK19Y040 C2020 01 03.47225 11 47 23.57 +32 09 12.7 19.1 GVEA112G96
CK19Y040 C2020 01 03.47744 11 47 23.67 +32 09 17.2 18.9 GVEA112G96
CK19Y040 KC2020 01 03.73085 11 47 30.71 +32 13 02.2 qEA112Q11
CK19Y040 KC2020 01 03.73622 11 47 30.86 +32 13 07.1 qEA112Q11
CK19Y040 KC2020 01 03.74156 11 47 31.00 +32 13 11.7 18.2 RqEA112Q11
CK19Y040 C2020 01 04.11613 11 47 41.13 +32 18 45.5 20.4 VVEA112033
CK19Y040 C2020 01 04.11670 11 47 41.14 +32 18 46.5 20.2 VVEA112033
CK19Y040 C2020 01 04.11726 11 47 41.14 +32 18 46.4 20.1 VVEA112033
CK19Y040 |C2020 01 04.44730 11 47 50.03 +32 23 46.7 VEA112H06
CK19Y040 |C2020 01 04.45003 11 47 50.10 +32 23 49.4 VEA112H06
CK19Y040 |C2020 01 04.45275 11 47 50.18 +32 23 51.5 18.9 GVEA112H06
CK19Y040 KC2020 01 04.69645 11 47 56.68 +32 27 33.1 qEA112Q11
CK19Y040 KC2020 01 04.70342 11 47 56.85 +32 27 39.3 18.2 RqEA112Q11
CK19Y040 KC2020 01 04.71092 11 47 57.03 +32 27 46.1 qEA112Q11
CK19Y040 C2020 01 04.98497 11 48 04.22 +32 31 55.9 20.6 VVEA112033
CK19Y040 C2020 01 04.98552 11 48 04.24 +32 31 57.0 19.5 VVEA112033
CK19Y040 KC2020 01 05.12947 11 48 07.83 +32 34 11.4 18.8 RqEA112157
CK19Y040 KC2020 01 05.13946 11 48 08.11 +32 34 20.5 18.8 RqEA112157
CK19Y040 KC2020 01 05.14892 11 48 08.34 +32 34 29.7 18.6 RqEA112157
CK19Y040 C2020 01 05.35141 11 48 13.79 +32 37 37.8 18.7 GVEA112703
CK19Y040 C2020 01 05.35686 11 48 13.83 +32 37 42.2 18.4 GVEA112703
CK19Y040 C2020 01 05.36230 11 48 14.01 +32 37 47.5 18.6 GVEA112703
CK19Y040 C2020 01 05.36775 11 48 14.02 +32 37 52.9 18.5 GVEA112703
CK19Y040 KC2020 01 05.73106 11 48 23.27 +32 43 32.9 qEA112Q11
CK19Y040 KC2020 01 05.73746 11 48 23.42 +32 43 38.8 18.1 RqEA112Q11
CK19Y040 KC2020 01 05.74333 11 48 23.55 +32 43 44.2 qEA112Q11
CK19Y040 KC2020 01 06.01417 11 48 30.32 +32 47 58.2 19.5 VtEA112A71
CK19Y040 KC2020 01 06.02545 11 48 30.61 +32 48 09.2 VEA112118
CK19Y040 KC2020 01 06.02733 11 48 30.67 +32 48 11.4 19.1 VtEA112A71
CK19Y040 KC2020 01 06.03467 11 48 30.89 +32 48 18.6 19.1 GVEA112203
CK19Y040 KC2020 01 06.03855 11 48 30.92 +32 48 21.8 VEA112118
CK19Y040 KC2020 01 06.04049 11 48 31.03 +32 48 23.2 18.9 VtEA112A71
CK19Y040 KC2020 01 06.05166 11 48 31.24 +32 48 34.3 VEA112118
CK19Y040 KC2020 01 06.05513 11 48 31.36 +32 48 37.9 19.3 VtEA112A71
CK19Y040 KC2020 01 06.05515 11 48 31.36 +32 48 37.7 18.6 GVEA112203
CK19Y040 KC2020 01 06.06142 11 48 31.50 +32 48 43.5 19.1 RoEA112K88
CK19Y040 KC2020 01 06.06788 11 48 31.65 +32 48 49.8 19.3 RoEA112K88
CK19Y040 KC2020 01 06.07434 11 48 31.81 +32 48 56.7 19.2 RoEA112K88
CK19Y040 2C2020 01 06.17230 11 48 34.16 +32 50 29.7 18.7 GVEA112I89
CK19Y040 2C2020 01 06.17591 11 48 34.32 +32 50 32.6 19.0 GVEA112I89
CK19Y040 2C2020 01 06.18106 11 48 34.40 +32 50 37.7 19.0 GVEA112I89
CK19Y040 2C2020 01 06.18791 11 48 34.57 +32 50 44.3 18.6 GVEA112I89
CK19Y040 C2020 01 06.39432 11 48 39.71 +32 54 01.9 18.9 GVEA112I52
CK19Y040 C2020 01 06.40331 11 48 39.91 +32 54 10.5 19.1 GVEA112I52
CK19Y040 C2020 01 06.40744 11 48 40.01 +32 54 13.7 18.2 GVEA112I52
CK19Y040 C2020 01 06.41557 11 48 40.26 +32 54 20.9 VEA112I52
CK19Y040 C2020 01 06.97016 11 48 53.42 +33 03 17.9 UEA112C42
CK19Y040 C2020 01 06.98144 11 48 53.65 +33 03 28.4 UEA112C42
CK19Y040 C2020 01 06.99271 11 48 53.88 +33 03 39.5 UEA112C42
CK19Y040 C2020 01 06.99734 11 48 54.17 +33 03 41.9 VEA112246
CK19Y040 C2020 01 06.99785 11 48 54.19 +33 03 42.3 VEA112246
CK19Y040 C2020 01 06.99890 11 48 54.14 +33 03 43.1 VEA112246
CK19Y040 C2020 01 06.99914 11 48 54.08 +33 03 43.2 VEA112246
CK19Y040 C2020 01 07.00398 11 48 54.17 +33 03 50.6 UEA112C42
CK19Y040 KC2020 01 07.02320211 48 54.75 +33 04 06.5 19.3 GVEA112Z99
CK19Y040 KC2020 01 07.02733011 48 54.85 +33 04 10.2 19.3 GVEA112Z99
CK19Y040 KC2020 01 07.03140811 48 54.95 +33 04 14.2 18.9 GVEA112Z99
CK19Y040 C2020 01 07.38271 11 49 03.22 +33 09 59.0 20.0 GVEA112I52
CK19Y040 C2020 01 07.38636 11 49 03.32 +33 10 02.8 18.7 GVEA112I52
CK19Y040 C2020 01 07.39001 11 49 03.39 +33 10 06.5 19.1 GVEA112I52
CK19Y040 C2020 01 07.39372 11 49 03.45 +33 10 10.2 19.1 GVEA112I52
CK19Y040 KC2020 01 08.21206 11 49 21.74 +33 23 42.7 19.4 VvEA112A77
CK19Y040 KC2020 01 08.21964 11 49 21.97 +33 23 51.0 19.2 VvEA112A77
CK19Y040 KC2020 01 08.22722 11 49 22.10 +33 23 58.2 18.7 VvEA112A77
CK19Y040 "C2020 01 09.17943 11 49 42.66 +33 40 06.5 18.7 VqEA112G40
CK19Y040 "C2020 01 09.19470 11 49 42.97 +33 40 22.0 18.8 VqEA112G40
CK19Y040 "C2020 01 09.20850 11 49 43.21 +33 40 36.5 18.8 VqEA112G40
CK19Y040 C2020 01 09.38304 11 49 46.67 +33 43 34.3 19.3 VtEA112449
CK19Y040 C2020 01 09.40720 11 49 47.33 +33 44 00.6 19.0 VtEA112449
Observer details:
033 Karl Schwarzschild Observatory, Tautenburg. Observers S. Melnikov, U. Laux,
B. Stecklum, F. Ludwig. Measurer B. Stecklum. 1.34-m f/3 Schmidt + CCD.
118 Astronomical and Geophysical Observatory, Modra. Observer S. Gajdos.
0.6-m f/5.5 reflector + CCD.
157 Frasso Sabino. Observers R. Haver, R. Gorelli. Measurer R. Haver. 0.37-m
f/6.70 Cassegrain + CCD.
203 GiaGa Observatory. Observers S. Foglia, G. Galli. Measurer G. Galli.
0.36-m f/5.76 Schmidt-Cassegrain + CCD.
204 Schiaparelli Observatory. Observer L. Buzzi. 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.
449 Griffin Hunter Observatory, Bethune. Observer P. Hyseni. Measurer L.
Griffin.
595 Farra d'Isonzo. Observers E. Pettarin, G. Ierman. Measurer E. Pettarin.
0.61-m f/4.5 reflector + CCD.
703 Catalina Sky Survey. Observer G. J. Leonard. 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. 0.68-m Schmidt + 10K CCD.
A71 Stixendorf. Observers M. Jaeger, E. Prosperi, S. Prosperi. Measurer M.
Jaeger. 0.28-m f/2.2 reflector + CCD.
A77 Observatoire Chante-Perdrix, Dauban. Observers C. Rinner, F. Kugel.
Measurer F. Kugel. 0.4-m f/2.8 reflector + CCD.
C10 Maisoncelles. Observer J.-F. Soulier. 0.30-m f/3.8 Newtonian reflector +
CCD.
C42 Xingming Observatory, Mt. Nanshan. Observers H.-J. Tan, X. Gao. Measurer
H.-J. Tan. 0.6-m f/8 Ritchey-Chretien + CCD.
C43 Hoyerswerda. Observer P. Lindner. 0.30-m f/6.3 Schmidt-Cassegrain + CCD.
C95 SATINO Remote Observatory, Haute Provence. Observer J. Jahn. 0.60-m f/3.2
Newtonian reflector + CCD.
G40 Slooh.com Canary Islands Observatory. Observers B. Lutkenhoner, G.
Gasparovic, Y. Chen. Measurers B. Lutkenhoner, G. Gasparovic, Y. Chen, G.
Y. Gasparovic. 0.5-m f/6.8 Corrected Dall-Kirkham + CCD, 0.43-m f/6.8
Corrected Dall-Kirkham + CCD.
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. 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.
H06 iTelescope Observatory, Mayhill. Observers H. Sato, R. Fidrich, K.
Yoshimoto. Measurers H. Sato, K. Sarneczky, K. Yoshimoto. 0.43-m f/6.8
astrograph + CCD + f/4.5 focal reducer, 0.51-m f/4.5 reflector + CCD, 0.43-m
f/6.8 reflector + CCD + f/4.5 focal reducer.
H36 Sandlot Observatory, Scranton. Observer G. Hug. 0.56-m f/5.1 reflector +
CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observers D. C. Fuls, G. J.
Leonard. 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.
I89 iTelescope Observatory, Nerpio. Observers C. W. Hergenrother, E.
Bryssinck. 0.43-m f/6.8 reflector + CCD.
K38 M57 Observatory, Saltrio. Observer G. Baj. 0.3-m f/5.5 Ritchey-Chretien +
CCD.
K87 Dettelbach Vineyard Observatory. Observer B. Haeusler. 0.3-m f/5.7
Schmidt-Cassegrain + CCD.
K88 GINOP-KHK, Piszkesteto. Observer K. Sarneczky. 1.02-m Ritchey-Chretien
+ CCD, 0.60-m Schmidt + CCD.
L01 Visnjan Observatory, Tican. Observer K. Korlevic. 1.0-m f/2.9 reflector +
CCD.
L06 Sormano 2 Observatory, Bellagio Via Lattea. Observer G. Ventre. 0.28-m
f/10 reflector + CCD.
L27 29PREMOTE Observatory, Dauban. Observer J.-F. Soulier. 0.20-m f/4
Newtonian reflector + CCD.
Q11 Shinshiro. Observer T. Ikemura. Measurer H. Sato. 0.35-m f/5 reflector +
CCD.
T08 ATLAS-MLO, Mauna Loa. 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.
T12 Mauna Kea-UH/Tholen NEO Follow-Up (2.24-m). Observer M.-T. Hui. Measurer
D. J. Tholen. 2.24-m f/10.1 reflector + CCD.
Z99 Clixby Observatory, Cleethorpes. Observer A. Mickleburgh. 0.36-m f/8
Schmidt-Cassegrain + CCD.
Orbital elements:
C/2019 Y4 (ATLAS)
Epoch 2020 May 31.0 TT = JDT 2459000.5
T 2020 May 30.99149 TT Bell
q 0.2522871 (2000.0) P Q
z +0.0052736 Peri. 177.54315 +0.48067371 +0.62763038
+/-0.0005749 Node 120.47328 -0.81617007 +0.57558163
e 0.9986695 Incl. 45.27974 -0.32065433 -0.52420025
From 171 observations 2019 Dec. 28-2020 Jan. 9, mean residual 0".4.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2019 12 11 11 32 40.5 +27 59 41 2.9095 3.1638 95.8 18.0 20.3
...
2019 12 26 11 42 53.8 +30 18 03 2.5056 2.9649 108.3 18.4 19.7
...
2020 01 03 11 47 10.3 +32 02 17 2.2988 2.8564 115.0 18.2 19.4
...
2020 01 09 11 49 38.8 +33 37 01 2.1497 2.7737 119.9 17.9 19.1
2020 01 10 11 49 59.2 +33 54 18 2.1254 2.7598 120.7 17.8 19.0
2020 01 11 11 50 18.3 +34 12 03 2.1013 2.7459 121.5 17.8 19.0
...
2020 01 17 11 51 41.7 +36 08 13 1.9607 2.6617 126.1 17.4 18.7
...
2020 01 25 11 51 51.5 +39 10 47 1.7852 2.5475 131.6 16.8 18.3
...
2020 02 09 11 44 30.9 +46 21 08 1.5017 2.3269 137.6 16.6 17.6
M. P. C. Staff (C) Copyright 2020 MPC M.P.E.C. 2020-A112
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