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J/A+A/567/A126      Warsaw Catalogue of cometary orbits      (Krolikowska, 2014)

Warsaw Catalogue of cometary orbits: 119 near-parabolic comets. Krolikowska M. <Astron. Astrophys. 567, A126 (2014)> =2014A&A...567A.126K
ADC_Keywords: Minor planets Keywords: catalogs - comets: general - Oort Cloud Abstract: The dynamical evolution of near-parabolic comets strongly depends on the starting values of the orbital elements derived from the positional observations. In addition, when drawing conclusions about the origin of these objects, it is crucial to control the uncertainties of orbital elements at each stage of the dynamical evolution. I apply a completely homogeneous approach to determine the cometary orbits and their uncertainties. The resulting catalogue is suitable for the investigation of the origin and future of near-parabolic comets. First, osculating orbits were determined on the basis of positional data. Second, the dynamical calculations were performed backwards and forwards up to 250AU from the Sun to derive original and future barycentric orbits for each comet. In the present investigation of dynamical evolution, the numerical calculations for a given object start from the swarm of virtual comets constructed using the previously determined osculating (nominal) orbit. In this way, the uncertainties of orbital elements were derived at the end of numerical calculations. Description: Description of observational material and the new orbital quality assessment for 119 near-parabolic comets mostly investigated in P1-P4 (see references below), and homogeneous sets of orbital elements for osculating, original and future orbits. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file tablea1.dat 184 135 Description of observational material and the new orbital quality assessment for 119 near-parabolic comets tableb.dat 198 134 Heliocentric orbital elements of osculating orbits for comets from Samples A1, A2 and B tablec.dat 198 128 Barycentric orbital elements of original orbits, i.e. before entering the planetary zone for near-parabolic comets of Samples A1, A2 and B tabled.dat 198 126 Barycentric orbital elements of future orbits, i.e. after leaving the planetary zone for near-parabolic comets of Samples A1, A2 and B tableb4.dat 115 54 NG parameters for comets with NG heliocentric orbital elements of osculating orbits in tableb.dat
See also: B/comets : Database of the orbital elements of comets (Rocher, 2007) Byte-by-byte Description of file (# headlines): tablea1.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Sample [A1 A2 B] Sample name (G1) 4- 15 A12 --- Desig Comet's designation 17- 40 A24 --- Cname Comet's name 41- 46 F6.3 AU qosc Occulating perihelion distance 53- 60 I8 "YYYYMMDD" Time Perihelion time 67- 74 I8 "YYYYMMDD" arc1 Date of the first observation 77- 84 I8 "YYYYMMDD" arc2 Date of the last observation 89- 93 I5 --- Nobs [7/5337] number of observations taken into account 98-102 F5.2 yr arcy interval of data (arc in years) 107-111 F5.2 AU dh1 heliocentric distance of the first observation 113-117 F5.2 AU dh2 heliocentric distance of the last observation 123-132 A10 --- datat Data type in the sense of time-distribution around perihelion: pre, post, full 133-140 A8 --- Model Model type (GR=pure gravitational, NG=non-gravitational) 141-143 F3.1 --- Q*GR ? Accuracy of gravitational orbit 149-151 F3.1 --- Q*NG ? Accuracy of non-gravitational orbit when determinable 157-159 A3 --- Qnew New quality orbit assessment (1a+ is best) 164-167 F4.2 arcsec RMS Root-mean-square error 168-173 I6 --- Nres [14/10589] Number of residuals taken for orbit determination for a given model 178-184 A7 --- Ref References to the solution (see the original article for the remaining symbols) (1)
Note (1): References to the solution are: P1 = Krolikowska and Dybczynski, 2010MNRAS.404.1886K P2 = Dybczynski and Krolikowska, 2011MNRAS.416...51D P3 = Krolikowska, Dybczynski and Sitarski, 2012A&A...544A.119K P4 = Krolikowska and Dybczynski, 2013MNRAS.435..440K
Byte-by-byte Description of file: table[bcd].dat
Bytes Format Units Label Explanations
1- 2 A2 --- Sample [A1 A2 B] Sample name (G1) 4 A1 --- Com [a-l] Comments (1) 6- 17 A12 --- Desig Comet's designation 18- 25 I8 "YYYYMMDD" Epoch Epoch, year 28- 31 I4 yr T.Y Perihelion time, year 32- 33 I2 "month" T.M Perihelion time, month 34- 42 F9.6 d T.D Perihelion time, day 43- 56 F14.8 AU q Perihelion distance 57- 70 F14.8 --- e [0.96/1.06] Eccentricity 71- 82 F12.6 deg ARG [0/360] Argument of perihelion ω (J2000) 83- 94 F12.6 deg LONG [0/360] Longitude of the ascending node Ω (J2000) 95-106 F12.6 deg i Inclination of the orbit in degrees (J2000) 107-115 F9.2 10-6/AU 1/a Inverse of semimajor axis 116-125 F10.6 d e_T.D Uncertainty of Perihelion time in days 126-139 F14.8 AU e_q Uncertainty of perihelion distance 140-153 F14.8 --- e_e Uncertainty of eccentricity 154-165 F12.6 deg e_ARG Uncertainty of argument of perihelion 166-177 F12.6 deg e_LONG Uncertainty of longitude of the ascending node 178-189 F12.6 deg e_i Uncertainty of inclination 190-198 F9.2 10-6/AU e_1/a Uncertainty of inverse of semimajor axis
Note (1): Comments as follows: a = Osculating barycentric orbits based on the entire data sets (tableb) or Original barycentric orbits based on the entire data sets (tablec) b = Osculating orbits based on DIST or pre-perihelion data sets c = Osculating orbits based on post-perihelion data sets d = Osculating orbits from the entire data sets e = Osculating orbits from pre-perihelion data sets for investigating the past dynamical evolution or Original barycentric orbits based on pre-perihelion data sets f = Osculating orbits from post-perihelion data sets for investigating the future dynamical evolution g = Osculating orbits based on the entire data sets h = Original orbits based on the osculating orbits determined from the entire data sets i = Future barycentric orbits based on the entire data sets j = Future barycentric orbits based on DIST or post-perihelion data sets k = Future barycentric orbits based on post-perihelion data sets l = Future orbits based on the osculating orbits determined from the entire data sets
Byte-by-byte Description of file (# headlines): tableb4.dat
Bytes Format Units Label Explanations
1- 2 A2 --- Sample [A1 A2 B] Sample name (G1) 4- 15 A12 --- Desig Comet's designation 18- 29 F12.5 10-8AU/d2 A1 Radial non-gravitational (NG) parameter 30- 41 F12.5 10-8AU/d2 e_A1 Uncertainy of radial NG parameter 42- 52 F11.5 10-8AU/d2 A2 Transverse non-gravitational (NG) parameter 54- 64 F11.5 10-8AU/d2 e_A2 Uncertainy of transverse NG parameter 67- 77 F11.5 10-8AU/d2 A3 Normal non-gravitational (NG) parameter 78- 86 F9.5 10-8AU/d2 e_A3 Uncertainy of normal NG parameter 90- 96 F7.2 d tau Time shift of maximum of g(r) relative to perihelion time (2) 97-103 F7.2 d e_tau ? Uncertainty of perihelion time (3) 112-115 A4 --- Model Type of model (STD, PRE, POST, or DIST)
Note (2): negative value means that maximum of g(r) is before perihelion passage Note (3): for C/1959 Y1 tau was assumed
Global notes: Note (G1): Samples as follows: A1 = Years 1885-2005. 28 near-parabolic comets of qosc<3.1AU and original inverse semi-major axes (1/aori) less than 0.000150/AU A2 = Years 2006-2010. Complete sample of near-parabolic comets of qosc<3.1AU and original inverse semi-major axes (1/aori) less than 0.000150/AU B = Years 1970-2010. Almost complete sample of 69 near-parabolic comets of qosc>3.1AU and original inverse semi-major axes (1/aori) less than 0.000100/AU. exceptions: C/2008 S3, C/2009 F4, C/2010 S1 and C/2010 U3, all four were still observable at the end of 2013.
Acknowledgements: Malgorzata Krolikowska, mkr(at)cbk.waw.pl
(End) M. Krolikowska [Space Research Centre PAS], P. Vannier [CDS] 03-Jun-2014
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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