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V/53A               Catalogue of the Brightest Stars  (Ochsenbein+ 1988)

Le catalogue des etoiles les plus brillantes Catalogue of the brightest stars Ochsenbein F., Halbwachs J.L. <Bull. Inform. CDS 32, 83 (1987)> =1987BICDS..32...83O Ochsenbein F., Acker A., Legrand E., Poncelet J.M., Thuet-Fleck E. <A.Acker (ed.), Strasbourg Obs. (1988)>
ADC_Keywords: Stars, bright ; Combined data Introduction au catalogue (version francaise): Ce catalogue fournit des donnees sur les 1628 etoiles brillantes de magnitude allant jusqu'a 5.01 contenues dans le "catalogue des etoiles les plus brillantes" de F. Ochsenbein et co. (1984), lui-meme derive de la 4eme edition du "Bright Star Catalogue" (Hoffleit 1982). Il differe de la version originale imprimee par les points suivants: - les designations des etoiles dane le catalogue Hipparcos, ainsi que les positions Hipparcos, exprimees dans l'International Celestial Reference System (ICRS), ont ete rajoutees (A) - les valeurs des parallaxes et mouvements propres ont ete remplacees par les valeurs du catalogue Hipparcos pour la quasi-totalite des etoiles (A) - les distances en annees-lumieres ont ete calculees (A) - les coordonnees ecliptiques ont ete ajoutees aux donnees astrometriques. - la photometrie UBVRI a ete extraite du catalogue de Lanz (1986); ceci explique que trois etoiles soient de magnitude superieure a 5.00 (HR 3229, HR 4392 et HR 6161). De plus, afin de faciliter les traitements par programme, on donne la valeur 99.99 en cas de mesure manquante (99.999 pour l'uvbyHbeta). - la lettre grecque "delta", qui apparaissait dans les types spectraux sous la forme codee "<04>" est maintenant ecrite en toutes lettres. - une colonne donnant la classe de luminosite en chiffre arabe a ete ajoutee a l'ecriture classique du type spectral. - le nombre de composantes des etoiles doubles visuelles (2) est donne explicitement. (A) indique les donnees ajoutees dans la version 'A' Description: This catalogue provides data on the 1628 stars brighter than magnitude 5.01 contained in the "catalogue des etoiles les plus brillantes" by Ochsenbein et al. (1984), compiled from the fourth edition of The Bright Star Catalogue (Hoffleit 1982). It differs from the original printed version by the following points: - the star designations in Hipparcos catalogue were added, as well as the positions expressed in the International Celestial Reference System (ICRS) (A) - the parallax and proper motion data were replaced by the Hipparcos values for almost all the bright stars (A) - the distances (expressed in light-years) were computed (A) - ecliptic coordinates were added to astrometric data - UBVRI photometry was taken from Lanz (1986); for that reason, three stars (HR 3229, HR 4392 and HR 6161) are fainter than 5 mag. Moreover, the blanks due to unknown indices were filled with the value 99.99 (or 99.999 for the uvbyHbeta photometry). - the greek letter "delta" that appears in some spectral types is now written in latin letters instead of the code "<04>". - the luminosity classes are coded as integer numbers in an additional column. - the number of components of visual double stars is given. (A) indicates data added for version 'A' File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 278 1628 The Catalogue names.dat 18 80 Star names / Noms des etoiles
See also: V/50 : The Bright Star Catalogue, 5th Edition I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 4 I4 --- HR [1/9110]+ "Bright Star" catalog V/50 6- 11 I6 --- HD [1/225300] Henry Draper" catalog III/135 13- 15 I3 --- Flamsteed ? Flamsteed number 18- 21 A4 --- Bayer Greek letter (lettre grecque) 23- 25 A3 --- Const Constellation (3 characters) 28- 37 A10 --- VarName Designation as Variable Star 39- 40 I2 h RAh Right Ascension J2000 (hours) 42- 43 I2 min RAm Right Ascension J2000 (minutes) 45- 48 F4.1 s RAs Right Ascension J2000 (seconds) 50 A1 --- DE- Declination J2000 (sign) 51- 52 I2 deg DEd Declination J2000 (degrees) 54- 55 I2 arcmin DEm Declination J2000 (minutes) 57- 58 I2 arcsec DEs Declination J2000 (seconds) 61- 66 F6.1 0.1s/a precRA Precession in RA for 10 years 68- 71 I4 0.1arcsec/a precDE Precession in DE for 10 years 74- 79 F6.2 deg ELON Ecliptic longitude, J2000 81- 86 F6.2 deg ELAT Ecliptic latitude, J2000 88- 93 F6.2 deg GLON Galactic longitude 95-100 F6.2 deg GLAT Galactic latitude 102-105 I4 --- HRm [0,9110] 2nd HR number when combined (4) 107-112 I6 --- HIP ?=0 Hipparcos (Cat. <I/239>) designation (4) 114 A1 --- n_HIP [*] Note on Plx, pmRA, pmDE (4) 115-117 I3 mas Plx ? Parallax from Hipparcos (1) (4) 119-124 I6 mas/yr pmRA Proper motion (mouvement propre) in RA (4) (9) 126-131 I6 mas/yr pmDE Proper motion (mouvement propre) in DE (4) 133-142 F10.6 deg RA(ICRS) ? Right ascension from Hipparcos (10) 144-153 F10.6 deg DE(ICRS) ? Declination from Hipparcos (10) 155-159 I5 al Dist Distance of star in light-years (5) 160 A1 --- n_Dist [ts] Trigonometric/Spectroscopic distance (5) 162-165 I4 km/s RVel Radial velocity (vitesse radiale) 167-170 A4 --- n_RVel [VSB12O? ] Comment on RVel (3) 172-176 F5.2 mag Vmag [-1.46/5.03] Visual magnitude (magnitude visuelle) 178-182 F5.2 mag B-V ?=99.99 B-V (Johnson) index (2) 183-187 F5.2 mag U-B ?=99.99 U-B (Johnson) index (2) 188-192 F5.2 mag V-R ?=99.99 V-R (Johnson) index (2) 193-197 F5.2 mag R-I ?=99.99 R-I (Johnson) index (2) 199-204 F6.3 mag b-y ?=99.999 Stromegren index (2) 205-210 F6.3 mag m1 ?=99.999 Stroemgren index (2) 211-216 F6.3 mag c1 ?=99.999 Stroemgren index (2) 217-222 F6.3 mag Hbeta ?=99.999 Stroemgren index (2) 226 A1 --- l_vsini [:<] Limit flag for vsini (6) 227-229 I3 km/s vsini ? Projected rotational velocity (projection de la vitesse de rotation sur la ligne de visee) (1) 230 A1 --- u_vsini ':' for uncertainty (marque d'incertitude) 231-235 F5.1 0.1nm Wgamma ? Equivalent width of H-gamma line (largeur equivalente de la raie Hgamma) (en Angstroem = 10-10m) (1) 237-238 A2 --- WilsonLC Wilson Luminosity Class (7) 239-257 A19 --- SpType MK Spectral Type 258 I1 --- LClass [1/6]? Numeric Luminosity Class (classe de luminosite exprimee en chiffre) (1) 260-261 I2 --- nComp [1/13]? Number of visual components (nombre de composantes visuelles) 263-266 F4.1 mag Dmag ? Magnitude difference between components (difference de magnitude entre les composantes) Comp (1) 268-273 F6.1 arcsec Sep ? Separation between Comp (1) 275-278 A4 --- Comp Designation of components (8)
Note (1): Field may be blank (la donnee peut etre inexistante) Note (2): The value 99.99 or 99.999 indicates an unknown value (la valeur 99.99 ou 99.999 indique l'inexistance de la donnee) Note (3): Note on RVel: V: variable velocity without known reason (vitesse variable sans raison determinee) SB: spectroscopic binary (binaire spectroscopique) SB1: one-spectrum binary (binaire a un spectre) SB2: two visible spectra (le deuxieme spectre est visible) O: known orbit (les elements orbitaux ont ete determines) Note (4): Some close stars are combined in Hipparcos catalogue; the second HR number is then provided in the column HRm. The HRm column is zero in all other cases. (certaines binaires serrees ont des donnees Hipparcos qui combinent 2 etoiles, dont le numero HR est dans la colonne HRm; cette colonne HRm contient 0 pour les etoiles simples) Some bright stars, flagged by an * in column n_HIP, could not be resolved by Hipparcos; the parallax and proper motions are then taken from the Bright Star Catalogue. (Certaines etoiles brillantes n'ont pas de solution astrometrique dans Hipparcos; les parallaxes et mouvements propres affiches proviennent alors du "Bright Star" catalogue) The Hipparcos parallax has an accuracy almost always better than 1mas (la parallaxe Hipparcos a une precision generalement meilleure que 1mas) Note (5): The distance, in light-years (1al=(1/3.26)pc) was computed from: (la distance, exprimee en annees-lumieres, est calculee par): - the trigonometric parallax (dist=3260/Plx) when n_Dist is 't'; this method was adopted when the parallax is larger than 5mas (la parallaxe trigonometrique quand n_Dist contient 't', methode adoptee lorsque la parallaxe est d'au moins 5mas) - the spectroscopic distance, derived from the UBV photometry and the spectral classification, for distances over 650al (la distance spectroscopique, calculee a partir de la photometrie UBV et de la classification spectrale, a ete adoptee pour des distances depassant 650al) The accuracy of the distance should always be better than 20%. (La precision de la distance devrait etre meilleure que 20%) Note (6): The ':' in the flag n_vsini stands for "less or equal" (le symbole ':' signifie "inferieur ou egal") Note (7): only present when MK luminosity class absent (uniquement lorsque le type MK n'est pas complet) Note (8): Designation of components concerned by columns Dmag and Sep (Designation des composantes concernees par Dmag et Sep); "O" designates a binary discovered by occultation methods (binaire decouverte par occultation) Note (9): Proper motion contains the cos(DE) term (ce mouvement propre est la variation annuelle de RA * cos(DE)) Note (10): The Hipparcos positions are expressed in the ICRS system, close to J2000 FK5-based frame, at the epoch 1991.25 which is the median epoch of the Hipparcos mission (les positions Hipparcos sont dans le systeme ICRS, qui est proche du systeme FK5 equinoxe J2000; les positions sont donnees pour l'epoque 1991.25, milieu de la mission Hipparcos)
Byte-by-byte Description of file: names.dat
Bytes Format Units Label Explanations
1- 4 I4 --- HR Bright Star number 7- 18 A12 --- Name Common name of the star / Nom usuel
History: * The catalogue was first prepared in 1984 (Ochsenbein et al., 1984) and published by the Observatoire de Strasbourg * 31-May-1996: documentation standardized * 03-Feb-1999: Hipparcos data were added, and distances were computed. (F. Ochsenbein, CDS) * 24-Dec-2004: File "names.dat" added. References: Hoffleit D. 1982, "The Bright Star Catalogue", 4th Edition (in collaboration with C. Jaschek), Yale Observatory (catalog V/25) Ochsenbein F., Acker A., Legrand E., Poncelet J.M., and Thuet-Fleck E. 1984, "Catalogue des Etoiles les Plus Brillantes", ed. Acker A., Observatoire de Strasbourg, Centre de Donnees astronomiques et Planetarium de Strasbourg Lanz T. =1986A&AS...65..195L (catalog II/116) "The Hipparcos and Tycho Catalogues", 1997, ESA SP-1200 (See Cat. I/239)
(End) Francois Ochsenbein [CDS] 03-Feb-1999
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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