MPEC 1998-X19: 1939 TN = 1998 WG22
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M.P.E.C. 1998-X19 Issued 1998 Dec. 5, 16:25 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
1939 TN = 1998 WG22
Observations:
J98W22G* C1998 11 18.25966 03 40 20.80 +19 53 48.8 19.0 704
J98W22G C1998 11 18.30431 03 40 18.84 +19 53 42.4 19.1 704
J98W22G C1998 11 18.34877 03 40 16.98 +19 53 33.7 19.2 704
J98W22G C1998 11 18.39379 03 40 15.06 +19 53 24.9 19.6 704
J98W22G C1998 11 21.24665 03 38 18.89 +19 45 12.7 18.6 704
J98W22G C1998 11 21.28462 03 38 17.24 +19 45 06.2 18.5 704
J98W22G C1998 11 21.35923 03 38 14.02 +19 44 53.7 19.1 704
Observer details:
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko. Measurers J. Stuart, H. Viggh, R. Sayer. 1.0-m f/2.15
reflector + CCD.
Orbital elements:
1939 TN = 1998 WG22
Epoch 1999 Jan. 22.0 TT = JDT 2451200.5 Nakano
M 12.05283 (2000.0) P Q
n 0.10324826 Peri. 165.33576 +0.67162480 -0.74000651
a 4.5000177 Node 242.45717 +0.67557713 +0.63174457
e 0.2463184 Incl. 2.33991 +0.30416387 +0.23084445
P 9.55 H 13.5 G 0.15 U 5
Residuals in seconds of arc
391007 062 0.5- 0.2- 981118 704 1.2+ 0.2- 981121 704 0.4+ 0.2-
391018 062 0.9- 0.4- 981118 704 0.2+ 1.0+ 981121 704 0.4- 0.1-
391020 062 0.9+ 0.8+ 981118 704 0.4+ 0.0 981121 704 1.7- 0.4+
391111 062 0.5+ 0.2- 981118 704 0.0 0.9-
Ephemeris:
1939 TN a,e,i = 4.50, 0.25, 2 q = 3.3916
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 12 03 03 30.68 +19 11.6 2.446 3.406 164.4 4.5 18.5
1998 12 13 03 25.25 +18 45.9 2.504 3.410 152.9 7.5 18.7
1998 12 23 03 21.35 +18 25.6 2.588 3.415 141.8 10.3 18.9
1999 01 02 03 19.34 +18 12.5 2.694 3.421 131.1 12.5 19.1
1999 01 12 03 19.36 +18 07.6 2.817 3.427 120.9 14.3 19.2
1999 01 22 03 21.38 +18 10.7 2.954 3.434 111.2 15.5 19.4
1999 02 01 03 25.32 +18 21.2 3.100 3.442 101.9 16.3 19.5
1999 02 11 03 31.00 +18 38.0 3.251 3.450 93.2 16.6 19.6
1999 02 21 03 38.23 +18 59.7 3.404 3.458 84.8 16.5 19.7
1999 03 03 03 46.83 +19 24.8 3.556 3.467 76.8 16.2 19.8
1999 03 13 03 56.61 +19 51.9 3.704 3.477 69.2 15.5 19.9
1999 03 23 04 07.41 +20 19.8 3.846 3.487 61.8 14.6 20.0
1999 04 02 04 19.07 +20 47.1 3.979 3.498 54.7 13.5 20.0
1939 TN approached Jupiter to 0.18 AU in 1935 May. Further approaches
to 1.07 AU and 1.10 AU occurred in 1981 Aug. and 1995 Nov., respectively.
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-X19
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