MPEC 2017-E57 : COMET C/2017 E2 (XuYi)
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M.P.E.C. 2017-E57 Issued 2017 Mar. 7, 14:32 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/2017 E2 (XuYi)
Observations:
CK17E020 C2017 03 01.82132 13 32 26.43 +07 10 06.8 19.7 TqEE057D29
CK17E020 C2017 03 01.84135 13 32 25.01 +07 10 04.9 19.5 TqEE057D29
CK17E020 C2017 03 01.86138 13 32 23.57 +07 10 02.2 19.5 TqEE057D29
CK17E020 C2017 03 02.27132 13 31 54.91 +07 09 19.8 19.5 TqEE057I52
CK17E020 C2017 03 02.27612 13 31 54.51 +07 09 19.1 19.6 TqEE057I52
CK17E020 C2017 03 02.28092 13 31 54.19 +07 09 19.2 19.6 TqEE057I52
CK17E020 C2017 03 02.28571 13 31 53.89 +07 09 18.7 19.7 TqEE057I52
CK17E020 C2017 03 02.37650 13 31 47.32 +07 09 10.3 19.6 ToEE057691
CK17E020 C2017 03 02.38015 13 31 47.06 +07 09 09.4 19.7 ToEE057691
CK17E020 C2017 03 02.38379 13 31 46.80 +07 09 09.1 19.8 ToEE057691
CK17E020 C2017 03 02.40007 13 31 45.67 +07 09 07.1 qEE057G96
CK17E020 C2017 03 02.40434 13 31 45.34 +07 09 07.1 19.5 TqEE057G96
CK17E020 C2017 03 02.40865 13 31 45.00 +07 09 06.2 19.2 TqEE057G96
CK17E020 C2017 03 02.85994 13 31 12.81 +07 08 20.0 19.1 TqEE057D29
CK17E020 C2017 03 02.87997 13 31 11.36 +07 08 17.8 19.2 TqEE057D29
CK17E020 C2017 03 02.90000 13 31 09.93 +07 08 16.4 19.2 TqEE057D29
CK17E020 KC2017 03 03.01876 13 31 01.58 +07 08 03.2 20.0 TqEE057K65
CK17E020 KC2017 03 03.03376 13 31 00.51 +07 08 00.9 19.8 TqEE057K65
CK17E020 KC2017 03 03.04877 13 30 59.43 +07 07 59.6 19.5 TqEE057K65
CK17E020 C2017 03 03.37128713 30 36.32 +07 07 26.9 19.4 TUEE057H01
CK17E020 C2017 03 03.37651713 30 35.93 +07 07 26.5 19.4 TUEE057H01
CK17E020 C2017 03 03.39019713 30 34.94 +07 07 25.0 19.3 TUEE057H01
CK17E020 C2017 03 03.40405813 30 33.92 +07 07 23.5 19.3 TUEE057H01
CK17E020 C2017 03 03.42700613 30 32.25 +07 07 21.2 19.3 TUEE057H01
CK17E020 C2017 03 03.45436013 30 30.25 +07 07 18.3 19.4 TUEE057H01
CK17E020 C2017 03 03.49499613 30 27.29 +07 07 14.1 19.5 TUEE057H01
CK17E020 C2017 03 03.52132013 30 25.38 +07 07 11.3 19.4 TUEE057H01
CK17E020 C2017 03 04.38156 13 29 23.13 +07 05 43.1 19.3 TqEE057G96
CK17E020 C2017 03 04.38410 13 29 22.99 +07 05 43.5 19.0 TqEE057G96
CK17E020 C2017 03 04.38608 13 29 22.81 +07 05 42.9 19.4 TqEE057G96
CK17E020 C2017 03 04.44960 13 29 18.08 +07 05 35.8 19.4 ToEE057691
CK17E020 C2017 03 04.46600 13 29 16.91 +07 05 34.1 19.4 ToEE057691
CK17E020 C2017 03 04.48544 13 29 15.44 +07 05 32.8 19.6 ToEE057691
CK17E020 C2017 03 05.26757713 28 18.28 +07 04 10.2 19.6 TUEE057H01
CK17E020 C2017 03 05.28693713 28 16.83 +07 04 08.1 19.4 TUEE057H01
CK17E020 C2017 03 05.29756913 28 16.03 +07 04 07.1 19.5 TUEE057H01
CK17E020 C2017 03 05.30240713 28 15.67 +07 04 06.7 19.5 TUEE057H01
CK17E020 C2017 03 05.82396 13 27 36.85 +07 03 13.1 19.7 TqEE057D29
CK17E020 C2017 03 05.84524 13 27 35.26 +07 03 10.6 19.1 TqEE057D29
CK17E020 C2017 03 05.86653 13 27 33.67 +07 03 08.1 19.3 TqEE057D29
Observer details:
691 Steward Observatory, Kitt Peak. Observer R. S. McMillan. 0.9-m f/3
reflector + CCD.
D29 Purple Mountain Observatory, XuYi Station. Observers H. B. Zhao, B. Li,
G. Zhaori, R. Q. Hong, L. F. Hu. Measurers H. B. Zhao, B. Li. H. Lu,
G. Zhaori. 1.04-m f/1.8 Schmidt + CCD.
G96 Mt. Lemmon Survey. Observer R. A. Kowalski. Measurers E. J. Christensen,
D. C. Fuls, A. R. Gibbs, A. D. Grauer, J. A. Johnson, R. A. Kowalski,
S. M. Larson, G. J. Leonard, R. G. Matheny, R. L. Seaman, F. C. Shelly.
1.5-m reflector + 10K CCD.
H01 Magdalena Ridge Observatory, Socorro. Observers W. H. Ryan, E. V. Ryan.
Measurer W. H. Ryan. 2.4-m f/8.9 reflector + CCD.
I52 Steward Observatory, Mt. Lemmon Station. Observer J. A. Johnson.
Measurers E. J. Christensen, D. C. Fuls, A. R. Gibbs, A. D. Grauer,
J. A. Johnson, R. A. Kowalski, S. M. Larson, G. J. Leonard, R. G. Matheny,
R. L. Seaman, F. C. Shelly. 1.0-m reflector + CCD.
K65 Cesena. Observers V. Tinella, N. A. R. O. Nicolini Astronomical Robotic
Observatory. Measurer V. Tinella. 0.40-m f/7 Schmidt-Cassegrain + CCD.
Orbital elements:
C/2017 E2 (XuYi)
T 2016 July 17.63572 TT MPCW
q 1.5288688 (2000.0) P Q
Peri. 72.91899 +0.15647102 -0.96291491
Node 14.89459 +0.18353338 -0.19031777
e 1.0 Incl. 58.77207 +0.97048046 +0.19124336
From 40 observations 2017 Mar. 1-5.
Ephemeris:
C/2017 E2 (XuYi)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2017 02 05 13 54 36.1 +08 01 41 2.5082 3.0098 111.3 17.8 19.3
...
2017 02 20 13 42 58.1 +07 27 38 2.4488 3.1574 128.2 14.2 19.4
...
2017 02 28 13 34 32.7 +07 13 17 2.4341 3.2360 137.7 11.9 19.5
...
2017 03 06 13 27 23.9 +07 02 56 2.4336 3.2949 144.9 10.0 19.6
2017 03 07 13 26 09.1 +07 01 11 2.4345 3.3047 146.1 9.6 19.6
2017 03 08 13 24 53.3 +06 59 26 2.4357 3.3145 147.3 9.3 19.6
...
2017 03 14 13 17 04.2 +06 48 23 2.4494 3.3733 154.4 7.3 19.7
...
2017 03 22 13 06 13.8 +06 31 43 2.4860 3.4516 163.1 4.8 19.9
...
2017 04 06 12 46 11.6 +05 51 21 2.6148 3.5979 167.3 3.5 20.1
Gareth V. Williams (C) Copyright 2017 MPC M.P.E.C. 2017-E57
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