J/AJ/107/1814 Chiron occultations (Bus+, 1994)
Chiron stellar occultation candidates: 1993-1996
BUS S.J., WASSERMAN L.H., ELLIOT J.L.
<Astron. J. 107, 1814 (1994)>
=1994AJ....107.1814B 1994AJ....107.1814B (SIMBAD/NED Reference)
ADC_Keywords: Occultations
Abstract:
A photographic search was conducted for stars that may be occulted
by the unusual solar system object (2060) Chiron during the period
from fall 1993 through summer 1996. 44 candidates were identified
to a limiting V magnitude of 16, and for which the minimum appulse
separation with Chiron is predicted to be less than 2.5arcsec. The
successful observation of a stellar occultation by Chiron would give
a direct measure of its diameter (currently estimated to be between
60 and 300km), and would help considerably in constraining Chiron's
surface properties and volatile makeup. If at the time of the
occultation, Chiron exhibits a significant coma, there is also the
potential for measuring the optical-depth profile of the dust in
its inner coma.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 97 44 Possible occultations by Chiron
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- Star Star name
6- 13 A8 "DD/MM/YY" Obs.date Closest approach date
15- 19 A5 "h:m" Obs.time Closest approach time
21- 23 F3.1 arcsec Sep [0/2.5] Minimum separation
24 A1 --- n_Sep [NS] Orientation of Sep
26- 29 F4.1 mag MStar [10.2/16.9] Star magnitude
31- 34 F4.1 mag MChiron [15.3/16.1] Chiron magnitude
36- 39 F4.2 --- Fraction [0.25/0.99] Fraction drop in intensity
41- 44 F4.1 km/s Vel [3.6/39.7] Velocity
46- 48 I3 deg SolEl [21/166] Solar elongation
50- 51 I2 h RAh Hour of Right ascension J2000.0 (1)
53- 54 I2 min RAm Minute of Right ascension J2000.0 (1)
56- 61 F6.3 s RAs Second of Right ascension J2000.0 (1)
63 A1 --- DE- Declination sign
64 I1 deg DEd Degree of Declination J2000.0 (1)
66- 67 I2 arcmin DEm Arcminute of Declination J2000.0 (1)
69- 73 F5.2 arcsec DEs Arcsecond of Declination J2000.0 (1)
75- 76 I2 --- nObs [3/12] Number of observations
78- 81 F4.2 s e_RAs rms uncertainty on right ascension
83- 86 F4.2 arcsec e_DEs rms uncertainty on declination
88- 97 A10 --- GSC GSC identification
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Note (1): Epoch 1992.0.
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Table 1: PACS films used in Search.
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PACS
Field Field Center Dates observed
ID RA (2000.0) Dec
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Historical Notes: Keypunched at CDS
(End) James Marcout, Patricia Bauer [CDS] 24-Feb-1995