J/MNRAS/376/1707 1996-2006 observations of Triton (Qiao+, 2007)
Astrometric observations of Triton.
Qiao R.C., Yan Y.R., Shen K.X., Dourneau G., Xi X.J., Cheng X., Wang S.H.,
Tang Z.H., Liu J.R.
<Mon. Not. R. Astron. Soc., 376, 1707-1710 (2007)>
=2007MNRAS.376.1707Q 2007MNRAS.376.1707Q
ADC_Keywords: Planets - Positional data
Keywords: astrometry - planets and satellites: general
Abstract:
Astrometric positions of the Neptunian Satellite Triton are given for
the opposition of Neptune for the years 1996, 2003, 2005 and 2006. The
943 observed positions were obtained at the Cassegrain focus of a
156-cm reflector. In our reduction, the up-to-date catalogue of stars
UCAC2 was chosen to ensure a proper astrometric calibration. Our
observed positions are compared to theoretical positions provided from
JPL and IMCCE ephemerides. The observed minus calculated residuals
have s.d. values of the order of 0.04arcsec.
Description:
The observations presented here were obtained with the 156-cm
telescope at the Sheshan station (longitude=121:11:03.3E,
latitude=31:05:46.1N , altitude=97m) near the Shanghai Astronomical
Observatory. In the present work, our new observations spanning the
period from 1996 to 2006 are included.
Description:
The positions are topocentric and given in the ICRF J2000 system.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 43 943 The list of our observed positions of Triton
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See also:
J/A+AS/120/107 : 1989-1994 CCD observations of Triton (Veiga+ 1996)
J/A+A/425/1107 : Observations of Triton and Proteus (Vieira Martins+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 17 A17 "date" Date Observation date (YYYY/MM/DD.dddddd)
19- 20 I2 h RAh Right ascension (Topocentric, ICRF J2000)
22- 23 I2 min RAm Right ascension (Topocentric, ICRF J2000)
25- 30 F6.3 s RAs Right ascension (Topocentric, ICRF J2000)
32 A1 --- DE- Declination sign (Topocentric, ICRF J2000)
33- 34 I2 deg DEd Declination (Topocentric, ICRF J2000)
36- 37 I2 arcmin DEm Declination (Topocentric, ICRF J2000)
39- 43 F5.2 arcsec DEs Declination (Topocentric, ICRF J2000)
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 03-Jul-2007