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M.P.E.C. 1997-Y11 Issued 1997 Dec. 23, 14:22 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
BMARSDEN@CFA.HARVARD.EDU or GWILLIAMS@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html
1997 XF11
Observations:
J97X11F* C1997 12 06.47227 07 58 29.75 +13 31 16.3 19.1 V 691
J97X11F C1997 12 06.49324 07 58 27.95 +13 31 16.0 19.4 V 691
J97X11F C1997 12 06.51496 07 58 26.12 +13 31 15.6 19.3 V 691
J97X11F C1997 12 09.67727 07 53 51.89 +13 31 36.0 18.4 V 402
J97X11F C1997 12 09.67935 07 53 51.71 +13 31 36.1 402
J97X11F C1997 12 09.68144 07 53 51.50 +13 31 37.1 402
J97X11F C1997 12 09.68352 07 53 51.32 +13 31 36.5 402
J97X11F C1997 12 09.68560 07 53 51.10 +13 31 37.0 402
J97X11F C1997 12 09.68769 07 53 50.94 +13 31 37.0 402
J97X11F C1997 12 18.69766 07 38 14.33 +13 42 02.3 18.0 V 402
J97X11F C1997 12 18.69975 07 38 13.90 +13 42 03.7 402
J97X11F C1997 12 18.70183 07 38 13.71 +13 42 01.4 402
J97X11F C1997 12 18.70391 07 38 13.46 +13 42 03.0 402
J97X11F C1997 12 21.60906 07 32 32.42 +13 48 05.0 18.1 V 897
J97X11F C1997 12 21.63285 07 32 29.58 +13 48 08.7 897
J97X11F C1997 12 21.63734 07 32 28.91 +13 48 07.7 897
J97X11F C1997 12 21.64517 07 32 27.88 +13 48 10.0 897
J97X11F C1997 12 21.64939 07 32 27.34 +13 48 10.6 897
J97X11F C1997 12 21.65311 07 32 26.80 +13 48 10.9 897
Observer details:
402 Dynic Astronomical Observatory. Observer A. Sugie. 0.60-m f/3.7 reflector
+ CCD.
691 Steward Observatory, Kitt Peak. Observer J. V. Scotti. 0.9-m Spacewatch
telescope.
897 Chiyoda. Observer T. Kojima. 0.25-m f/6.0 reflector + CCD.
Orbital elements:
1997 XF11
Epoch 1997 Nov. 28.0 TT = JDT 2450780.5 Williams
M 85.18836 (2000.0) P Q
n 0.56933087 Peri. 102.69821 +0.72681599 +0.68567310
a 1.4417597 Node 214.03784 -0.65457207 +0.67392006
e 0.4823930 Incl. 4.08628 -0.20802382 +0.27510755
P 1.73 H 17.0 G 0.15
From 19 observations 1997 Dec. 6-21.
Ephemeris:
1997 XF11 a,e,i = 1.44, 0.48, 4 q = 0.7463
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1997 12 18 07 39.56 +13 40.8 0.869 1.794 150.8 15.5 18.8
1997 12 23 07 29.73 +13 51.4 0.868 1.817 157.9 11.8 18.7
1997 12 28 07 19.34 +14 05.0 0.873 1.840 164.7 8.1 18.6
1998 01 02 07 08.76 +14 20.8 0.885 1.862 170.3 5.1 18.5
1998 01 07 06 58.40 +14 38.1 0.904 1.883 171.6 4.4 18.5
1998 01 12 06 48.62 +14 56.2 0.931 1.903 167.4 6.5 18.7
1998 01 17 06 39.71 +15 14.7 0.964 1.922 161.3 9.4 19.0
1998 01 22 06 31.89 +15 33.3 1.004 1.940 154.8 12.5 19.2
1998 01 27 06 25.30 +15 51.6 1.049 1.958 148.5 15.3 19.4
1998 02 01 06 20.02 +16 09.6 1.100 1.974 142.3 17.8 19.6
1998 02 06 06 16.06 +16 27.2 1.156 1.990 136.4 20.0 19.8
1998 02 11 06 13.37 +16 44.2 1.216 2.005 130.8 21.9 20.0
1998 02 16 06 11.87 +17 00.5 1.279 2.019 125.5 23.5 20.2
1998 02 21 06 11.47 +17 16.1 1.345 2.033 120.4 24.8 20.3
1998 02 26 06 12.09 +17 30.8 1.413 2.045 115.5 25.9 20.5
1998 03 03 06 13.64 +17 44.5 1.483 2.057 110.9 26.8 20.6
1998 03 08 06 16.02 +17 57.0 1.554 2.068 106.5 27.4 20.8
1998 03 13 06 19.15 +18 08.4 1.626 2.078 102.3 27.9 20.9
1998 03 18 06 22.94 +18 18.3 1.698 2.087 98.2 28.2 21.0
Gareth V. Williams (C) Copyright 1997 MPC M.P.E.C. 1997-Y11
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