MPEC 1999-K43: 1998 HD14
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M.P.E.C. 1999-K43 Issued 1999 May 27, 15:36 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 ISSN 1523-6714
1998 HD14
Revision to MPEC 1998-H28
Observations:
J98H14D C1999 05 15.40382 17 47 54.48 +07 40 33.3 693
J98H14D C1999 05 15.40507 17 47 54.27 +07 40 35.5 693
J98H14D C1999 05 15.40631 17 47 54.02 +07 40 37.2 19.5 R 693
J98H14D C1999 05 22.42542 17 25 01.56 +10 13 00.8 693
J98H14D IC1999 05 22.42626 17 25 01.37 +10 13 01.7 693
J98H14D C1999 05 22.42707 17 25 01.19 +10 13 02.9 19.1 R 693
Observer details:
693 Catalina Station, Tucson. Observers C. W. Hergenrother, A. E. Gleason.
1.5-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc (or two decimals in degrees), reference and Delta-T
990515 693 0.10+ 0.03- 990522 693 0.11+ 0.02- MPC 32076 -0.069 day
Orbital elements:
1998 HD14 PHA 0.035
Id. C. W. Hergenrother (1999 observations)
Epoch 1999 Aug. 10.0 TT = JDT 2451400.5 Williams
M 226.98959 (2000.0) P Q
n 1.04074303 Peri. 260.46034 +0.09521595 -0.99540902
a 0.9643626 Node 184.11359 +0.95826403 +0.09430275
e 0.3130680 Incl. 7.80105 +0.26956255 +0.01636684
P 0.95 H 21.0 G 0.15 U 5
Residuals in seconds of arc
980425 566 0.3+ 0.3- 980426 557 0.7+ 0.3+ 980430 704 0.5+ 0.3+
980425 566 0.3+ 0.1+ 980426 557 0.3- 0.1+ 980430 704 1.6+ 0.0
980425 566 0.9- 1.4- 980427 568 0.7+ 0.9+ 980430 704 0.6+ 0.5+
980425 046 0.5- 0.1- 980427 568 0.3- 0.2- 980430 046 0.7- 0.4-
980425 046 0.3- 0.1+ 980427 568 0.3- 0.2- 980430 046 0.8- 0.1-
980425 046 0.3- 0.1- 980427 568 0.2- 0.1+ 980430 046 0.3+ 0.4+
980425 557 0.6+ 1.1+ 980427 568 0.0 0.2- 980430 046 0.2+ 0.1+
980425 046 0.7- 0.0 980427 568 0.5- 0.6- 980501 557 0.5- 0.3-
980425 046 0.5- 0.2- 980427 568 0.1- 0.3+ 980501 557 0.1- 0.2-
980425 046 0.8- 0.0 980427 568 0.2+ 0.0 980501 557 0.3+ 0.2-
980425 557 1.5- 0.0 980428 704 0.1+ 0.1- 980515 557 1.0- 1.0-
980426 816 0.2+ 0.3+ 980428 704 1.1+ 0.2+ 980515 557 0.7- 1.7-
980426 816 0.6+ 0.6+ 980428 704 0.2- 0.8+ 990515 693 0.1- 0.1+
980426 816 0.1+ 0.1- 980428 704 0.2+ 0.7+ 990515 693 0.4+ 0.5+
980426 046 0.5+ 0.5- 980428 704 (3.1- 0.5-) 990515 693 0.2+ 0.3+
980426 046 0.5+ 0.1+ 980428 402 0.3- 0.3+ 990522 693 0.1+ 0.1+
980426 046 0.0 0.3- 980428 402 0.2- 0.1+ 990522 693 0.0 0.1+
980426 557 0.4+ 0.5- 980428 402 0.1- 0.4- 990522 693 0.1- 0.4+
980426 046 0.0 0.2- 980430 704 1.6+ 0.0
Ephemeris:
1998 HD14 a,e,i = 0.96, 0.31, 8 q = 0.6625
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1999 05 22 17 26.50 +10 05.2 0.264 1.231 142.0 30.4 19.9
1999 06 01 16 51.31 +12 20.0 0.273 1.248 145.4 27.4 19.9
1999 06 11 16 18.70 +12 39.3 0.295 1.260 141.7 29.9 20.1
1999 06 21 15 53.78 +11 21.8 0.327 1.266 134.0 35.3 20.5
1999 07 01 15 38.18 +09 04.6 0.367 1.266 125.5 40.9 20.9
1999 07 11 15 30.90 +06 18.4 0.412 1.260 117.3 45.8 21.3
1999 07 21 15 30.41 +03 20.6 0.457 1.248 109.9 50.0 21.6
1999 07 31 15 35.21 +00 21.5 0.502 1.231 103.2 53.4 21.9
1999 08 10 15 44.07 -02 34.5 0.543 1.208 97.1 56.4 22.1
Gareth V. Williams (C) Copyright 1999 MPC M.P.E.C. 1999-K43
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