J/PAZh/36/365 CCD observations of visual double stars (Izmailov+, 2010)
Astrometric CCD observations of visual double stars at Pulkovo observatory.
Izmailov I.S., Khovricheva M.L., Khovirchev M.Yu., Kiyaeva O.V.,
Khrutskaya E.V., Romanenko L.G., Grosheva E.A., Maslennikov K.L.,
Kalimichenko O.A.
<Pis'ma Astron. Zh. 36, 365 (2010)>
=2010PAZh...36..365I 2010PAZh...36..365I
=2010AstL...36..349I 2010AstL...36..349I
ADC_Keywords: Stars, double and multiple ; Positional data
Keywords: visual double stars - positional data
Abstract:
We present the results of 3632 astrometric CCD-measurements of 314
visual double stars performed with the 26-inch refractor of the
Pulkovo observatory in 2003-2007. Angular separations (rho) and
position angles (theta) are provided. Mean values of standard errors
are 0.009" in rho and 0.40(deg)/rho in theta, where rho is the
separation in arcseconds.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 36 332 List of studied stars
table1.dat 76 3632 Positional data of separate nights for 314 stars
table2.dat 75 1028 Yearly average positions for 332 stars,
including stars of table1
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See also:
B/wds : The Washington Visual Double Star Catalog (Mason+ 2001-2010)
Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- WDS WDS name (Cat. B/wds)
12- 13 I2 h RAh WDS right ascension (J2000)
15- 16 I2 min RAm WDS right ascension (J2000)
18- 22 F5.2 s RAs WDS right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 34 F4.1 arcsec DEs Declination (J2000)
36 A1 --- Note [*] * for the 18 stars with data only in table2
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 5 I5 --- ADS ADS number
7- 16 A10 --- WDS WDS identifier (Cat. B/wds)
18- 22 A5 --- Comp Components when more than 2
23- 27 F5.3 yr t-2000 Epoch of observation (2000+)
29- 31 I3 --- N Number of CCD frames
33- 40 F8.4 deg theta Position Angle
42- 48 F7.4 arcsec rho Separation
50- 55 F6.4 deg e_theta Standard deviation in theta
57- 62 F6.4 arcsec e_rho Standard deviation in rho
64- 69 F6.4 arcsec sd.the Standard deviation of one CCD image in theta
71- 76 F6.4 arcsec sd.rho Standard deviation of one CCD image in rho
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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- 5 I5 --- ADS ADS number
7- 16 A10 --- WDS WDS identifier (Cat. B/wds)
18- 22 A5 --- Comp Components when more than 2
23- 27 F5.3 yr t-2000 Mean epoch of observations (2000+)
29- 30 I2 --- N Number of nights
32- 39 F8.4 deg theta Position Angle
41- 47 F7.4 arcsec rho Separation
49- 54 F6.4 deg e_theta ? Standard deviation in theta
56- 61 F6.4 arcsec e_rho ? Standard deviation in rho
63- 68 F6.4 arcsec sd.the ? Standard deviation of one night in theta
70- 75 F6.4 arcsec sd.rho ? Standard deviation of one night in rho
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Acknowledgements:
Igor Izmailov, i_izmailov(at)mail.ru
(End) Igor Izmailov [Pulkovo Obs.], Patricia Vannier [CDS] 20-May-2010