I/233 Orbital Elements of Minor Planets 1997 (Batrakov+ 1996)
Catalogue of Orbital Elements and Photometric Parameters of 6678 Minor Planets
numbered by 7 November, 1995
Batrakov Yu.V., Shor V.A.
<Institute of Theoretical Astronomy, St. Petersburg, Russia (1996)>
ADC_Keywords: Minor planets
Description:
The catalogue contains osculating elements of all permanently numbered
minor planets as of November 7, 1995. The elements are given with
respect to the ecliptic plane and equinox J2000 for the standard epoch
JD2450800.5 = 1997 December 18.0 ET. The elements of (719) Albert
which is considered to be lost are given for the epoch when the planet
was discovered. The catalogue data, in general, correspond to those
published in "Ephemerides of Minor Planets for 1997", St.Petersburg,
1996. Along with these data the catalogue incorporates some connected
information.
(C) Copyright 1996 ITA RAS
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
catalog 188 6678 The Elements
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See also:
Previous versions of the Orbital Elements are also available as catalogues
I/217 (November 18, 1994)
I/204 (June 1, 1993)
I/184C (November 2, 1990)
I/183B (November 13, 1989)
I/145 (November 23, 1988)
http://www.lowell.edu/users/elgb/Welcome.html : the Asteroid
Orbital Elements Database, maintained by Ted Bowell,
Lowell Observatory
Byte-by-byte Description of file: catalog
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Bytes Format Units Label Explanations
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1- 6 I6 --- Planet [1/6678]+ Minor Planet number
8- 11 I4 a Equinox [2000] equinox = 2000 (2000.0)
12- 15 I4 a EpY epoch (year) (1)
16- 17 I2 "month" EpM epoch (month number) (1)
18- 19 I2 "day" EpD epoch (day number) (1)
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/d dmotion mean daily motion
82- 87 F6.2 mag H absolute magnitude, H (2)
89- 93 F5.2 --- G ? slope parameter, G (2)
95-106 12I1 --- Pert Perturbations of planets (3)
107-112 6I1 --- Pert2 [0] reserved for further indications
of perturbing bodies:
113-116 I4 --- Nopp number of oppositions used for improvement
117-120 I4 --- Nobs number of observations used for improvement
121-124 I4 a Year1 the first year of the time interval covered
by the observations used for improvement
125-128 I4 a Year2 the last year of the time interval covered
by the observations used for improvement
129-133 F5.1 arcsec rms ?=0.0 Mean-root-square or maximum residual (4)
134-139 A6 --- Source code for the source of elements (5)
140-156 A17 --- Name name or preliminary designation of the planet
164-181 A18 --- Author author of the elements
182 I1 --- Unum [0/9]? Uncertainty number (6)
183-188 A6 "YYMMDD" Date six-figure code of the date when the elements
have been recorded in the ITA
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Note (1): The elements are given with respect to the ecliptic plane and
equinox J2000 for the standard epoch JD2450800.5 = 1997 December 18.0
(see Description above)
Note (2): The predicted apparent magnitude is computed by
m = H + 5.log(R.r) - 2.5log((1-G)Phi1 + G.Phi2)
where r and R are the heliocentric and geocentric distances,
and the phase functions are related to the solar phase angle β
(Phi1 = Phi2 = 1 when β=0; see details in
Minor Planet Circulars 10193-10194).
When the G column is blank, the default value of the slope parameter
is equal to 0.15,
Note (3): code consisting of zeros and ones; 1 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 account when determining the
elements; 10-th to 12-th positions of the code are used for indication
of perturbations from Ceres, Pallas, Vesta.
Note (4): mean-root-square residual or maximum residual of
observations with respect to set of elements fitted by least
squares. In the last case 50 is added to the absolute value of the
residual
Note (5): code for the source of elements consisting of one or two letters
and four or five digits; the letters EP and four digits or M and five
digits stand for the Minor Planet Circular and the number of page; the
letters EP and four digits stand for the Ephemerides of Minor Planets
and the year.
Note (6): this quantity, introduced in Minor Planet Circular 24597
http://cfa-www.harvard.edu/cfa/ps/services/24597.html 1995 Feb. 15;
it is related, on a logarithmic scale, to the possible in-orbit
longitudinal runoff with time and is represented by an integer from
0 (for a superbly precise computation) to 9 (where the uncertainty
can cover the whole sky).
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Author's address:
Yu.V.Batrakov & V.A.Shor
Institute of Theoretical Astronomy
Russian Academy of Sciences
Naberezhnaya Kutuzova, 10,
191187 St.Petersburg, Russia
(End) Francois Ochsenbein [CDS] 11-Jul-1996