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I/245               Orbital Elements of Minor Planets 1998    (Batrakov+ 1997)

Catalogue of Orbital elements and Photometric parameters of 7316 Minor Planets numbered by 25 November, 1996 Batrakov Yu.V., Shor V.A. <Institute of Theoretical Astronomy, St. Petersburg, Russia (1997)>
ADC_Keywords: Minor planets Description: The catalogue contains osculating elements of all permanently numbered minor planets as of November 25, 1996. The elements are given with respect to the ecliptic plane and equinox J2000 for the standard epoch JD2451000.5 = 1998 July 6.0 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 in "Ephemerides of Minor Planets for 1998", St.Petersburg, 1997 (in print). Along with these data the catalogue incorporates some connected information. (C) Copyright 1997 ITA RAS File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 188 7316 The Elements
See also: Previous versions of the Orbital Elements are also available as catalogues I/233 (Novwember 7, 1995) 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 B/astorb : the Asteroid Orbital Elements Database (CDS version) Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 6 I6 --- Planet [1/7316]+ 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
Note (1): The elements are given with respect to the ecliptic plane and equinox J2000 for the standard epoch JD2451000.5 = 1998 July 6.0 (see Description above) Note (2): The predicted apparent magnitude V is computed by V = 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 Phi1 and Phi2 are related to the solar phase angle β (Phi1 = Phi2 = 1 when β=0; see details in Minor Planet Circulars 10193-10194 or Epemerides of Minor Planets). When the G column is blank, the default value of the slope parameter is equal to 0.15 . In the present catalogue the H and G values are given in accordance with new listing (see Minor Planet Circular 28103 - 28116) which updates that published in MPC 17256 - 17273 and in EMP for 1992 - 1997. 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) have 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 MP 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).
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) V.A.Shor [ITA], Francois Ochsenbein [CDS] 18-Jul-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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