J/A+A/571/A63 New catalogue of one-apparition comets (Krolikowska+, 2014)
New catalogue of one-apparition comets discovered in the years 1901-1950.
Part I.
Krolikowska M., Sitarski G., Pittich E., Szutowicz S., Ziolkowski K.,
Rickman H., Gabryszewski R., Rickman B.
<Astron. Astrophys. 571, A63 (2014)>
=2014A&A...571A..63K 2014A&A...571A..63K
ADC_Keywords: Comets
Keywords: catalogs - comets: general - Oort Cloud
Abstract:
The orbits of one-apparition comets discovered in the early part of
the last century have formerly been determined with very different
numerical methods and assumptions on the model of the solar system,
including the number of planets taken into account. Moreover,
observations of the comet-minus-star-type sometimes led to
determination of the comet position that are less precise than what we
can derive today by using a more modern star catalogue.
We aim to provide a new catalogue of cometary orbits that are derived
using a completely homogeneous data treatment, accurate numerical
integration, and a modern model of the solar system.
We collected the complete sets of observations for investigated comets
from the original publications. Then we recalculated the cometary
positions for the comet-minus-star-type of observations using the
Positions and Proper Motions Star Catalogue, and applied a uniform
method for the data selection and weighting. As a final result, new
osculating orbits were determined. Secondly, dynamical calculations
were performed to the distance of 250AU from the Sun to derive
original and future barycentric orbits for evolution backward and
forward in time. These numerical calculations for a given object start
from a swarm of virtual comets constructed using our osculating
(nominal) orbit. In this way, we obtained the orbital element
uncertainties of original and future barycentric orbits.
Description:
Description of observational material and the new orbital quality
assessment for 38 near-parabolic comets discovered during the years
1901-1950 and the homogeneous sets of orbital elements for osculating,
original and future orbits derived by new re-analysis of older
astrometry.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 98 38 *Description of collected observational material
for the complete sample of 38 near-parabolic
comets discovered during the period 1901-1950
notes.dat 79 26 Notes of tablea1.dat
tablea2.dat 45 38 Description of collected (comet-star)-type of
observations for the 38 near-parabolic comets
tableb1.dat 174 51 Heliocentric orbital elements of osculating
orbits for 38 near-parabolic comets described
in tablea1.dat, and for 13 comets also with NG
tableb2.dat 60 13 Nongravitational (NG) parameters derived in NG
orbital solution for 13 comets with NG
osculating orbits given in tableb1.dat
tablec1.dat 96 51 Original and future barycentric inverse
semi-major axes and orbit quality assessment
for all solutions given in tableb1.dat
tabled1.dat 174 51 Barycentric orbital elements of original orbits,
i.e. before entering the planetary zone for all
solutions given in tableb1.dat
tablee1.dat 174 51 Barycentric orbital elements of future orbits,
i.e. after leaving the planetary zone for all
solutions given in tableb1.dat
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Note on tablea1.dat: and with inverse semi-major axis les than 0.000130AU-1
in Marsden and Williams Catalogue of Cometary Orbits (2008, hereafter MW08).
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See also:
J/A+A/567/A126 : Warsaw Catalogue of cometary orbits (Krolikowska, 2014)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Comet Comet's designation
11- 15 F5.3 AU qosc [0.3/4.2] Osculating perihelion distance
17- 24 I8 "YYYYMMDD" T Perihelion time
26- 33 I8 "YYYYMMDD" arc1 Date of the first observation used
34 A1 --- --- [-]
35- 42 I8 "YYYYMMDD" arc2 Date of the last observation used
44- 45 I2 --- Note1 [1-13]? Notes to cases where observations
outside the data interval given in MW08 were
found in literature, in notes.dat fine
47- 51 A5 --- datat [post+ ] Data type in the sense of
time-distribution around perihelion (1)
53- 56 I4 --- Nobs Number of observations taken into account
58- 61 F4.2 yr arcy ? Interval of data (arc in years)
63- 66 F4.2 AU dh1 Heliocentric distance of the first observation
67 A1 --- --- [-]
68- 71 F4.2 AU dh2 Heliocentric distance of the last observation
73- 80 I8 "YYYYMMDD" arc1M Date of the first observation in MW08
81 A1 --- --- [-]
82- 89 I8 "YYYYMMDD" arc2M Date of the last observation in MW08
91- 94 I4 --- NobsM Number of observations in MW08
96- 98 A3 --- Note2 [* ] Other notes (2)
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Note (1): Flag is:
post = All observations were taken after perihelion passage.
post+ = Number of observations taken after perihelion passage dominate
in the data set.
Note (2): Notes as follows:
* = This is the unique case where a large set of observations is available
at IAU Minor Planet Center Database. There are 239 positional
observations and two of them are prediscovery observations found by
Gary W. Kronk, extending the interval of data by about six months
(see also paper for more details).
** = Before perihelion only two observations were taken on 1904/01/10 and
1905/01/15.
*** = Interval of data is significantly shorter than in MW08. Data after
1891 April 01 are needed.
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Note [1/13] Note number
4- 79 A76 --- Text Text of the note
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Comet Comet's designation
11- 14 I4 --- Ncms Number of (comet-star)-type of observations
16- 19 I4 --- Ncmsr Number of (comet-star)-type of observations
recalculated using PPM Catalogue (for more
informations see paper)
21- 23 I3 % Ncmsf [0/100] Per cent of (comet-star)-type of
observations recalculated using PPM Catalogue
25- 28 F4.2 arcsec rmsPPM0 Root-mean-square error for preliminary
gravitational solution derived before using
the PPM Catalogue
30- 33 I4 --- NrPPM0 Number of residuals derived for preliminary
gravitational solution before using the PPM
Catalogue
35- 38 F4.2 arcsec rmsPPM1 Root-mean-square error for preliminary
gravitational solution derived after using
the PPM Catalogue
40- 43 I4 --- NrPPM1 Number of residuals derived for preliminary
gravitational solution derived after using
the PPM Catalogue
45 A1 --- Note [!] Note (3)
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Note (3): ! = The large number of only (comet-star)-type of data; among
them the significant per cent were successfully processed using the
PPM star Catalogue
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Byte-by-byte Description of file: table[bde]1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Comet Comet's designation
11- 18 I8 "YYYYMMDD" Epoch Perihelion time
20- 23 I4 yr T.Y Perihelion time, year
24- 25 I2 "month" T.M Perihelion time, month
26- 34 F9.6 d T.D Perihelion time, day
36- 45 F10.8 AU q [0.3/4.2] Perihelion distance
47- 56 F10.8 --- e [0.999/1.004] Eccentricity
58- 67 F10.6 deg arg [0/360] Argument of perihelion (J2000)
69- 78 F10.6 deg long [0/360] Longitude of the ascending node (J2000)
80- 89 F10.6 deg i [0/180] Inclination in degrees (J2000)
91-102 F12.6 1/AU aa Inverse of semimajor axis
104-111 F8.6 d e_T.D Uncertainty of Perihelion time
113-122 F10.8 AU e_q Uncertainty of perihelion distance
124-133 F10.8 --- e_e Uncertainty of eccentricity
135-142 F8.6 deg e_arg Uncertainty of argument of perihelion (J2000)
144-151 F8.6 deg e_long Uncertainty of longitude of the ascending node
(J2000)
153-160 F8.6 deg e_i Uncertainty of inclination (J2000)
162-171 F10.6 1/AU e_aa Uncertainty of inverse of semimajor axis
173-174 A2 --- Model Model, gravitational or non-gravitational (G1)
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Byte-by-byte Description of file: tableb2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Comet Comet's designation
11- 16 F6.3 10-8AU/d2 A1 Radial non-gravitational (NG) parameter
18- 22 F5.3 10-8AU/d2 e_A1 Uncertainy of radial NG parameter
24- 30 F7.4 10-8AU/d2 A2 ?=0 Transverse non-gravitational (NG)
parameter (1)
32- 37 F6.4 10-8AU/d2 e_A2 ?=0 Uncertainy of transverse NG parameter
39- 45 F7.4 10-8AU/d2 A3 ?=0 Normal non-gravitational (NG)
parameter (1)
47- 52 F6.4 10-8AU/d2 e_A3 ?=0 Uncertainy of normal NG parameter
54- 56 F3.1 d tau ?=0 Time shift of maximum of g(r) relative to
perihelion time (1)
58- 60 F3.1 d e_tau ?=0 Uncertainty of time shift relative to
perihelion time
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Note (1): where this parameter was indeterminable it was assumed to be zero.
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Byte-by-byte Description of file: tablec1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Comet Comet's designation
11- 12 A2 --- MWcl Orbital quality assesment given in MW08
(for more details see paper)
14- 16 I3 % MW% [16/123]? Estimated per cent of residual
used in MW08
18- 21 I4 10-6/AU MWori ? Inverse of barycentric original semimajor
axis given in MW08
23- 28 I6 10-6/AU MWosc ? Inverse of helioentric osculating semimajor
axis given in MW08
30- 35 I6 10-6/AU MWfut ? Inverse of barycentric future semimajor
axis given in MW08
37- 45 F9.2 10-6/AU aaori Inverse of barycentric original semimajor
axis derived here
47- 55 F9.2 10-6/AU e_aaori Uncertainty of inverse of barycentric
original semimajor axis
57- 65 F9.2 10-6/AU aafut Inverse of barycentric future semimajor axis
derived here
67- 75 F9.2 10-6/AU e_aafut Uncertainty of inverse of barycentric future
semimajor axis
77- 81 F5.2 arcsec rms Root-mean-square error
83- 87 I5 --- Nr Number of residuals taken for orbit
determination
89- 90 A2 --- MSEcl Orbital class using the orbital quality
assesment introduced by MSE (see paper)
92- 93 A2 --- cl Orbital class using the new orbital quality
assesment (for more details see paper)
95- 96 A2 --- Model Model, gravitational or non-gravitational (G1)
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Global notes:
Note (G1): Model is:
GR = Pure gravitational model of motion
NG = Non-gravitational model of motion (for more details see paper)
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Acknowledgements:
Malgorzata Krolikowska, mkr(at)cbk.waw.pl
(End) M. Krolikowska [Space Research Centre PAS], P. Vannier [CDS] 08-Sep-2014