I/184C/ Minor Planets Nov. 2, 1990 (Batrakov+ 1991)
Catalogue of orbital elements and photometric parameters of 4646 minor planets
numbered by November 2, 1990
Batrakov Yu.V., Shor V.A.
<Institute of Theoretical Astronomy, St. Petersburg, Russia (1991)>
ADC_Keywords: Minor planets
CATALOGUE OF ORBITAL ELEMENTS AND PHOTOMETRIC PARAMETERS
OF 4646 MINOR PLANETS NUMBERED BY NOVEMBER 2, 1990
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
main 178 4646 The Catalogue
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Yu.V.Batrakov, V.A.Shor
Institute for Theoretical Astronomy of the Russian
Academy of Sciences, St.Petersburg
SUMMARY. The catalogue containing orbital elements and
photometric parameters of 4646 permanently numbered minor
planets is described. Some connected information is given.
Introduction:
The catalogue contains osculating elements of all
permanently numbered minor planets as of November 2, 1990.
The elements are given for the standard epoch JD 2448800.5 =
1992 June 27.0 E.T. except for two planets (719) Albert
and (878) Mildred which are considered to be lost. The
elements of these two planets are given for the epoch when the
planets was first discovered. The catalogue data, in general,
correspond to those published in "Ephemerides of Minor
Planets/ Ephemeridy Malykh Planet for 1992", Leningrad,
Nauka, 1991 (pp. 24-109, Table "Elements" and Table "Lost
minor planets"). Along with those data the catalogue
incorporates some connected information.
The catalogue is an ordinary conversion of the file with
the elements of minor planets maintained at the BESM-6
computer of the Institute for Theoretical Astronomy(ITA). The
original elements used when compiling the catalogue were
computed at a number of institutions and by some
individuals. The osculating elements for the standard epoch
has been obtained at the ITA. This year the elements are
given for the first time with respect to the ecliptic and
equinox J2000.0. The computation of elements has been carried
out as follows.
The existing FK4/B1950.0 orbits for the epoch 1991 Dec.
10 were first transformed to FK5/J2000.0 system by procedure
recommended by the Commission 20 Ad Hoc System Transition
Committee and then the osculating elements were moved to the
new standard epoch by forward integration using the DE200
coordinates and corresponding masses of the perturbing
planets.
Format of data:
Byte-per-byte Description of file: main
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Bytes Format Units Label Explanations
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1- 6 I6 --- N Minor Planet number
8- 11 I4 a Equinox equinox = 2000 (2000.0)
12- 15 I4 a EpY epoch (year)
16- 17 I2 month EpM epoch (month number)
18- 19 I2 day EpD epoch (day number)
In most cases epoch is written as 19920627
(month and day may contain leading zero);
it is supposed that epoch is given
for 0 E.T. even for dates before 1925
20- 29 F10.6 deg M mean anomaly
30- 39 F10.6 deg omega argument of perihelion
40- 49 F10.6 deg Node node
50- 59 F10.6 deg i inclination to the ecliptic
60- 69 F10.8 --- e eccentricity
70- 81 F12.10 deg dmotion mean daily motion
82- 87 F6.2 mag H absolute magnitude, H
89- 93 F5.2 --- G slope parameter, G
95-103 9I1 --- Pert nine-figure code consisting of zeros and ones;
one in i-th position of the code means
that perturbations from the i-th major
planet (counting from Mercury to Pluto)
has been taken into consideration when
determining the elements.
104-107 I4 --- Nopp number of oppositions used for improvement
108-111 I4 --- Nobs number of observations used for improvement
112-115 I4 a Y1 the first year of the time interval covered
by the observations used for improvement
116-119 I4 a Y2 the last year of the time interval covered
by the observations used for improvement
120-124 F5.1 --- rms mean-root-square residual or maximum
residual of observations with respect to
the set of elements fitted by least
squares. In the last case 50 is added to
the absolute value of the residual
125-130 A6 --- code code for the source of elements consisting of
one or two letters and four or five digits;
the letters MP and four digits or M and
five digits stand for the Minor Planet
Circular and the page; the letters EP and
four digits stand for the Ephemerides of
Minor Planets and the year.
131-146 A16 --- Name name or preliminary designation of the planet
155-172 A18 --- Author author of the elements
173-178 A6 YYMMDD Date six-figure code of the date when the elements
have been written on tape at ITA (two last
figures of the year, month, day)
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Values of H and G are given in this volume in accordance
with new listing. The most significant difference from the
previous listing is that the default value of G has been
reduced from 0.25 to 0.15, a value denoted in the Table by
blanks.
When photoelectric observations are available,
least-squares solution have frequently been obtained for both
H and G (also in some instances G has been selected),
and these are shown with H given to 0.01 mag and G
in units of 0.01. There are 113 nondefault values in
the present listing compared with 237 in the 1991
EMP. For six planets the value of G are negative. Magnitudes
based solely on photographic observations or for
photoelectrically observed asteroids with large lightcurve
and/ or aspect variations are given to 0.1 mag. In 9 cases
the data are so meagre and/ or discordant that H is given
only to the nearest integer.
Some of the data in the last line such as the number of
oppositions or observation, limits of time interval, the
mean-root-square error may be unknown. In this case
blank or 0.0 stands for them.
Authors' address:
Yu.V.Batrakov & V.A.Shor
Institute for Theoretical Astronomy
Russian Academy of Sciences
Naberezhnaya Kutuzova 10,
191187 St.Petersburg, Russia
Notes by Francois Ochsenbein (CDS, Strasbourg)
The following modifications were performed:
char o036 at line 439[80] => Deleted
char o036 at line 806[0] => Deleted
char o217 at line 6272[21] => A
char o224 at line 6272[22] => O
Mis-alignements in lines 7827 + 8484
The following errors were found:
Missing osculator elements for #118
Missing photometric data for #147
Further correction for #4020 and #4197
Error in minor planet 3404 mentioned by Wayne H. Warren, corrected 10-Apr-1993
Reformatted the complete catalogue (all data on a single line)
Added decimal point when missing in H parameter
Replaced the 'X' in G parameter by blanks
Rewrote the format.
Remark: See newer version as catalogue I/204 (June 1, 1993)
(End) 10-Apr-1993