MPEC 1998-B09 : 1994 GY
The following Minor Planet Electronic Circular may be linked-to from your own Web pages, but must not otherwise be redistributed electronically.A form allowing access to any MPEC is at the bottom of this page.
Read MPEC 1998-B08
Read MPEC 1998-B10
M.P.E.C. 1998-B09 Issued 1998 Jan. 22, 15:32 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
1994 GY
Revision to MPEC 1994-J08
Observations:
J94G00Y C1997 12 27.22811 07 13 07.12 +40 27 08.8 20.5 R 688
J94G00Y C1997 12 27.24589 07 13 05.71 +40 27 15.0 688
J94G00Y C1998 01 03.15280 07 03 14.08 +41 04 50.3 693
J94G00Y C1998 01 03.15689 07 03 13.72 +41 04 52.0 693
J94G00Y C1998 01 03.16101 07 03 13.35 +41 04 52.7 693
Observer details:
688 Lowell Observatory, Mesa Station. Observer B. A. Skiff. Measurer
M. W. Buie. 1.07-m reflector + CCD.
693 Catalina Station, Tucson. Observers C. W. Hergenrother, S. M. Larson.
Measurer C. W. Hergenrother. 1.5-m reflector + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
971227 688 9.2+ 0.5+ 980103 693 9.5+ 0.3+ MPC 25228 -0.0092 day
Orbital elements:
1994 GY
Epoch 1997 Dec. 18.0 TT = JDT 2450800.5 Williams
M 297.93270 (2000.0) P Q
n 0.22569424 Peri. 189.99341 -0.72045866 +0.68287157
a 2.6717084 Node 34.10313 -0.62045535 -0.55679817
e 0.5311679 Incl. 12.45632 -0.30979748 -0.47292940
P 4.37 H 17.0 G 0.15 U 1
Residuals in seconds of arc
940414 675 1.3+ 1.3+ 940417 871 (1.1- 2.2-) 940504 675 0.8+ 1.8+
940414 675 0.1- 0.9+ 940417 871 0.8+ 1.9- 940504 675 (0.5+ 3.3+)
940414 402 0.3+ 0.6+ 940417 900 1.1- 0.6+ 940504 413 0.7- 0.6+
940414 402 (0.8- 2.3-) 940417 900 0.7- 0.4- 940504 413 0.6- 0.6+
940415 675 1.0+ 1.2+ 940419 817 (2.7+ 1.5-) 940505 474 1.0+ 1.0-
940415 675 1.1+ 0.8+ 940419 817 (2.2+ 0.2-) 940505 474 0.8+ 0.9-
940415 897 0.2+ 0.2- 940419 817 0.1- 0.2- 940506 411 0.4- 0.1-
940415 897 0.4- 0.4- 940419 817 0.0 0.9+ 940506 411 0.2- 0.0
940415 897 0.2+ 0.2- 940419 557 0.5- 0.7- 940506 411 0.2+ 0.0
940415 896 (0.3+ 3.1+) 940419 557 0.2- 1.3- 940506 360 0.3- 0.2+
940415 893 0.2+ 0.3- 940419 557 0.3+ 0.3- 940506 360 0.3- 0.1+
940415 402 0.3+ 1.7- 940419 557 0.3+ 0.2- 940507 801 0.2- 0.1-
940415 893 0.2+ 0.1- 940419 557 0.2- 0.2- 940507 801 0.3- 0.5-
940415 402 0.2- 1.1+ 940419 557 0.1+ 0.3- 940511 801 0.6+ 0.8-
940415 893 0.0 0.2- 940420 557 0.2+ 0.3- 940511 801 0.2+ 0.0
940415 893 0.1+ 0.2- 940420 557 0.1+ 0.2- 940512 360 0.5+ 0.4-
940415 402 0.9+ 1.5+ 940420 557 0.3+ 0.4+ 940512 360 0.6+ 0.4-
940415 896 (0.4+ 2.1+) 940420 557 0.1- 0.3+ 940516 323 (1.3+ 2.2-)
940415 402 0.4+ 1.5+ 940420 557 0.2- 0.2+ 940607 474 0.5+ 0.1-
940415 900 0.8+ 0.4+ 940420 557 0.1- 0.4+ 940607 474 1.0+ 0.1-
940415 900 1.3+ 1.1+ 940421 557 0.4- 0.3+ 940612 474 0.7- 0.7+
940415 900 0.1+ 0.3- 940421 557 0.4- 0.4+ 940612 474 0.9- 0.3-
940416 411 0.4- 1.2- 940421 900 0.5+ 1.0+ 940617 413 0.6+ 0.8-
940416 411 0.5- 0.4- 940421 900 0.8+ 0.7+ 940618 413 0.4+ 0.7-
940416 411 1.2- 1.4- 940421 391 (2.4+ 7.7+) 940618 413 0.5+ 0.9-
940416 391 1.9- 0.7- 940423 816 0.1- 0.1- 940620 413 0.2- 1.1-
940416 402 (1.2- 2.8-) 940423 816 0.4- 0.3+ 940620 413 0.1- 0.6-
940416 897 0.0 0.5- 940423 816 0.2+ 0.8+ 940725 413 0.8- 0.2+
940416 897 0.0 0.3- 940423 817 0.8- 0.4+ 940725 413 0.9- 0.2+
940416 402 1.2- 0.7+ 940429 111 0.5- 0.7+ 940726 413 0.1+ 0.1+
940416 897 0.2- 0.3- 940429 111 1.3- 1.0+ 940726 413 0.0 0.2+
940416 896 (2.0+ 6.7+) 940429 111 (2.3- 1.5+) 940815 413 0.3- 0.3+
940416 893 0.4- 0.5- 940429 111 1.5+ 0.1+ 940815 413 0.5+ 0.2+
940416 893 0.4- 0.4- 940429 111 1.2- 1.1- 940816 413 0.7- 0.3+
940416 893 0.5- 0.2- 940429 111 0.5- 1.2- 940827 413 0.6+ 0.1-
940416 893 0.1- 0.5- 940429 111 0.6- 0.9- 940827 413 0.3+ 0.1-
940416 896 (1.4- 5.9+) 940429 111 0.0 1.0+ 940828 413 0.4+ 0.1+
940416 893 1.5+ 0.6+ 940430 111 0.7+ 0.8+ 940828 413 0.3+ 0.2+
940417 411 0.4- 0.9- 940430 111 1.0+ 1.7+ 940917 413 1.3- 0.2+
940417 411 0.4- 0.9- 940501 413 0.3- 0.7+ 940917 413 0.4- 0.6-
940417 411 0.3- 0.6- 940501 413 0.4- 0.7+ 940918 413 0.5- 0.3+
940417 893 0.2- 0.8- 940502 413 0.2- 0.7+ 940918 413 0.3- 1.0+
940417 893 0.5- 0.6- 940502 413 0.2- 0.6+ 971227 688 0.2- 0.5+
940417 893 0.0 1.0- 940503 413 0.3- 0.5+ 971227 688 0.5+ 0.0
940417 372 1.2+ 0.8+ 940503 413 0.3- 0.6+ 980103 693 0.2- 0.1-
940417 893 0.1- 0.9- 940503 474 0.1+ 0.2+ 980103 693 0.1- 0.4+
940417 871 0.8+ 1.6- 940503 474 0.1+ 0.1+ 980103 693 0.0 0.1-
Ephemeris:
1994 GY a,e,i = 2.67, 0.53, 12 q = 1.2526
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 01 17 06 41.97 +41 46.3 1.643 2.564 154.0 9.7 20.8
1998 01 27 06 27.71 +41 44.9 1.641 2.505 144.0 13.3 20.8
1998 02 06 06 16.37 +41 20.6 1.661 2.446 133.4 17.0 20.9
1998 02 16 06 09.06 +40 40.3 1.699 2.385 122.9 20.4 21.0
1998 02 26 06 06.19 +39 51.1 1.750 2.323 113.0 23.1 21.1
1998 03 08 06 07.70 +38 58.0 1.808 2.260 103.8 25.2 21.2
1998 03 18 06 13.21 +38 03.8 1.868 2.196 95.3 26.8 21.3
1998 03 28 06 22.25 +37 08.9 1.928 2.132 87.5 27.9 21.3
1998 04 07 06 34.38 +36 12.2 1.984 2.067 80.4 28.5 21.3
1998 04 17 06 49.14 +35 12.1 2.034 2.001 73.8 28.8 21.3
1998 04 27 07 06.16 +34 05.9 2.076 1.935 67.8 28.8 21.3
Gareth V. Williams (C) Copyright 1998 MPC M.P.E.C. 1998-B09
Read MPEC 1998-B08
Read MPEC 1998-B10
Enter an MPEC number in one of the following forms:
- 1997-B01 (the full form)
- J97B01 (the packed version of the full form)
- B01 (the abbreviated form)