MPEC 1998-V28 : 1997 BQ
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Read MPEC 1998-V27
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M.P.E.C. 1998-V28 Issued 1998 Nov. 14, 13:58 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 BQ
Revision to MPEC 1997-C06
Observations:
J97B00Q C1998 11 11.17203 03 14 42.37 +17 55 04.5 19.5 R 709
J97B00Q C1998 11 11.17585 03 14 41.98 +17 55 04.3 19.3 R 709
J97B00Q C1998 11 11.17992 03 14 41.58 +17 55 04.0 19.2 R 709
J97B00Q C1998 11 11.18391 03 14 41.21 +17 55 03.4 19.4 R 709
J97B00Q C1998 11 11.19809 03 14 39.72 +17 55 02.6 19.1 R 709
J97B00Q C1998 11 14.25012 03 09 31.90 +17 49 22.7 19.8 R 709
J97B00Q C1998 11 14.25348 03 09 31.52 +17 49 22.6 19.6 R 709
J97B00Q C1998 11 14.25809 03 09 30.98 +17 49 21.4 19.5 R 709
Observer details:
709 Cloudcroft. Observer W. Offutt. 0.6-m Ritchey-Chretien + CCD.
First and last observations above in comparison with prediction:
Residuals in seconds of arc, reference and Delta-T
981111 709 7.4+ 3.1+ 981114 709 6.1+ 1.5+ MPC 30473 -0.0067 day
Orbital elements:
1997 BQ PHA 0.038
Epoch 1999 Jan. 22.0 TT = JDT 2451200.5 Marsden
M 284.51929 (2000.0) P Q
n 0.42745307 Peri. 147.30609 -0.94548153 +0.29065916
a 1.7453281 Node 50.30599 -0.32444700 -0.80149323
e 0.4793529 Incl. 11.00658 -0.02826327 -0.52261444
P 2.31 H 18.0 G 0.15 U 1
Residuals in seconds of arc
970116 381 0.3+ 1.0- 970129 355 0.3- 0.3- 970219 360 0.7- 0.1+
970116 381 1.1+ 1.6+ 970129 355 0.4- 0.2- 970219 360 0.6- 0.2+
970116 381 0.3- 0.0 970129 355 0.8- 0.0 970221 118 0.6- 0.2+
970116 381 0.1- 0.9+ 970130 670 0.5- 0.7- 970221 118 0.1- 0.3-
970116 381 0.0 0.6+ 970130 670 0.4- 1.1+ 970221 118 0.4- 0.2+
970116 381 0.4- 0.1+ 970130 670 0.2+ 0.3- 970222 360 0.6- 0.7-
970116 381 0.2+ 1.8+ 970130 670 1.7+ 0.2+ 970222 360 0.7- 0.5-
970116 381 1.9+ 1.6+ 970130 897 0.4+ 0.6- 970222 360 0.5- 0.5-
970116 381 1.5- 1.4- 970130 897 0.2- 0.2+ 970223 658 0.5- 0.1+
970116 381 0.0 1.0+ 970130 897 0.3+ 0.2+ 970223 658 0.3- 0.2+
970120 327 0.6+ 0.3+ 970130 355 0.6- 0.9- 970223 658 0.5- 0.1+
970120 327 1.5+ 0.5+ 970130 355 0.3- 0.8- 970223 658 0.2- 0.3+
970120 327 0.7+ 0.2+ 970130 355 0.4- 0.6- 970223 658 0.5- 0.1-
970120 327 0.8+ 0.5+ 970131 670 0.6+ 0.3+ 970224 658 0.2- 0.3+
970121 046 0.1+ 0.1+ 970131 670 0.4- 0.1+ 970224 658 0.0 0.1-
970121 046 0.4- 0.4- 970201 540 1.4- 0.5+ 970224 658 0.3- 0.3-
970121 046 0.0 0.0 970201 540 1.2- 0.1- 970224 658 0.9- 0.5+
970121 046 0.3- 0.4+ 970201 540 (2.2- 0.3+) 970224 658 0.8- 0.3+
970121 046 0.2- 0.4- 970201 540 0.1+ 0.1+ 970301 118 0.9+ 0.2-
970122 817 0.6- 0.0 970202 540 0.6+ 0.4- 970301 118 0.8+ 0.1-
970124 817 0.4- 0.5- 970202 540 0.3+ 0.2+ 970301 118 0.4+ 0.2-
970124 817 0.6+ 0.3- 970202 540 0.3+ 0.2+ 970301 557 0.4+ 0.1-
970124 817 0.3- 0.8- 970203 557 0.1+ 0.5+ 970301 557 0.3+ 0.0
970124 658 0.7- 1.3- 970203 557 0.2+ 0.6+ 970305 557 0.3+ 1.2-
970124 658 0.8- 1.1- 970203 557 0.0 0.7+ 970305 557 0.2+ 1.2-
970124 658 1.1- 1.5- 970203 557 0.1+ 0.6+ 970305 557 0.3+ 1.1-
970125 355 0.8+ 1.0+ 970205 402 0.1- 0.3+ 970309 557 0.2+ 0.0
970125 355 0.1- 0.6+ 970205 402 0.5- 0.1+ 970309 557 0.2+ 0.4+
970125 355 0.3+ 0.9+ 970205 402 0.3- 0.6+ 970310 557 0.5+ 0.3-
970125 355 1.5+ 0.9+ 970205 402 0.4- 0.2+ 970310 557 0.7+ 0.3+
970125 355 0.5+ 0.0 970206 657 0.6+ 0.1- 970310 557 0.7+ 0.2-
970125 557 0.2- 0.4- 970206 657 1.3+ 0.8+ 970312 557 0.5+ 0.2+
970125 557 0.1- 0.4- 970206 657 0.2+ 0.5- 970312 557 0.2+ 0.4+
970125 557 0.4- 0.7- 970206 657 0.2+ 0.3+ 970312 557 0.3+ 0.1+
970126 355 1.1+ 1.4+ 970206 657 0.1- 0.4- 970312 557 0.8+ 0.6+
970126 355 (2.7+ 2.4+) 970206 557 0.3- 0.2+ 970619 422 1.8- 0.1+
970126 046 0.0 0.2- 970206 557 0.3- 0.3+ 970627 422 0.8- 0.2-
970126 046 0.4+ 0.1+ 970206 557 0.2- 0.3+ 970627 422 0.2+ 0.4-
970126 046 0.4+ 0.1- 970206 540 0.3+ 0.3+ 970627 422 0.8+ 0.0
970126 046 0.4+ 0.2+ 970206 540 0.2- 0.3+ 970629 360 0.1- 0.2+
970127 557 0.2+ 0.1+ 970206 540 0.2+ 0.6+ 970629 360 0.3+ 0.3+
970127 557 0.1+ 0.1- 970208 566 0.4+ 0.2+ 970629 360 0.1+ 0.5+
970127 557 0.2+ 0.1- 970208 566 0.3+ 0.2+ 981111 709 0.3+ 0.1-
970127 557 0.2+ 0.0 970208 566 0.3+ 0.1+ 981111 709 0.3+ 0.0
970128 402 0.1- 0.2- 970209 360 0.5- 0.3+ 981111 709 0.5+ 0.1+
970128 587 0.2+ 0.1+ 970209 360 0.6- 0.3+ 981111 709 1.0+ 0.1-
970128 587 0.3- 0.2+ 970209 360 0.6- 0.2+ 981111 709 0.4+ 0.5+
970128 587 0.4+ 0.6- 970210 046 0.8- 0.0 981114 709 0.4+ 1.4-
970129 900 0.5- 0.0 970210 046 0.7- 0.1- 981114 709 0.1- 1.1-
970129 900 0.2- 1.1- 970219 360 0.6- 0.1+ 981114 709 0.9- 1.8-
Ephemeris:
1997 BQ a,e,i = 1.75, 0.48, 11 q = 0.9087
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
1998 11 13 03 11.64 +17 51.8 1.262 2.252 179.9 0.0 19.7
1998 11 18 03 03.15 +17 41.7 1.248 2.232 172.9 3.1 19.9
1998 11 23 02 54.70 +17 30.6 1.241 2.212 165.9 6.3 20.1
1998 11 28 02 46.54 +17 19.3 1.242 2.191 158.9 9.3 20.2
1998 12 03 02 38.93 +17 08.6 1.250 2.170 152.0 12.3 20.3
1998 12 08 02 32.05 +16 59.4 1.264 2.148 145.3 15.1 20.4
1998 12 13 02 26.06 +16 52.4 1.283 2.126 138.8 17.7 20.5
1998 12 18 02 21.07 +16 48.4 1.308 2.103 132.6 20.2 20.6
1998 12 23 02 17.14 +16 47.9 1.336 2.079 126.6 22.3 20.7
1998 12 28 02 14.32 +16 51.3 1.368 2.055 120.9 24.2 20.8
1999 01 02 02 12.58 +16 58.7 1.402 2.030 115.5 25.9 20.9
1999 01 07 02 11.88 +17 10.2 1.438 2.004 110.3 27.4 20.9
1999 01 12 02 12.19 +17 25.7 1.475 1.978 105.3 28.7 21.0
1999 01 17 02 13.46 +17 45.1 1.513 1.951 100.7 29.7 21.0
1999 01 22 02 15.65 +18 08.1 1.550 1.924 96.2 30.6 21.1
1999 01 27 02 18.70 +18 34.6 1.587 1.896 92.0 31.3 21.1
1999 02 01 02 22.54 +19 04.2 1.623 1.867 87.9 31.8 21.2
1999 02 06 02 27.15 +19 36.5 1.657 1.838 84.1 32.2 21.2
1999 02 11 02 32.48 +20 11.3 1.689 1.808 80.4 32.6 21.2
1999 02 16 02 38.50 +20 48.3 1.719 1.778 76.9 32.8 21.2
1999 02 21 02 45.18 +21 27.2 1.747 1.747 73.5 32.9 21.2
1999 02 26 02 52.51 +22 07.5 1.773 1.716 70.4 32.9 21.2
1999 03 03 03 00.46 +22 49.1 1.796 1.684 67.3 32.9 21.2
1999 03 08 03 09.02 +23 31.3 1.816 1.651 64.4 32.8 21.2
1999 03 13 03 18.19 +24 14.0 1.833 1.618 61.7 32.7 21.1
1999 03 18 03 27.96 +24 56.8 1.846 1.585 59.1 32.6 21.1
1999 03 23 03 38.36 +25 39.2 1.857 1.551 56.6 32.4 21.1
1999 03 28 03 49.36 +26 20.8 1.865 1.516 54.2 32.3 21.0
1999 04 02 04 00.99 +27 01.1 1.870 1.482 52.0 32.1 21.0
Brian G. Marsden (C) Copyright 1998 MPC M.P.E.C. 1998-V28
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