catalogues and names

The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

Combined General Catalogue of Variable Stars (Vol. I-III)

catalogues and names

catalogues and names	b Dor, bet Dor, HR 1922, HD 37350, SAO 249311, CP -62 487, FK5: 212
constellation	Dorado

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

position, motion, parallax:

position (J2000)	RA: 5h 33min 37.5sec	DEC: -62° 29' 23''
position (2000.72)	RA: 5h 33min 38sec	DEC: -62° 29' 21''
position (B1900)	RA: 5h 32min 45.4sec	DEC: -62° 33' 19''
proper motion (J2000)	RA: 0.002 arcsec/a	DEC: 0.009 arcsec/a
radial velocity	7 km/s note: variable radial velocity
rotational velocity	0 km/s (uncertain) (variable)
trigonometric parallax	0.012 arcsec
galactic coordinates	longitude: 271.73°	latitude: -32.77°

note (category: radial and/or rotational velocities):

Same period, originally considered SB in 1924; later identified as pulsating.

magnitude

visual magnitude

3.76 (V on UBV Johnson system)

spectral / color information

spectral class	F6Ia
B-V-magnitude	0.82
U-B-magnitude	0.55
R-I-magnitude

note (category: spectra):

Also classified F4-G4Ia-II.

variability information

variable star identification

Bet Dor

note (category: variability):

CDelta 3.46 - 4.08V, 9.84200d. Period varies.

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000)	RA: 5h 33min 37.514sec	DEC: -62° 29' 23.48''	±0.06 arcsec	source: 15
position (2000.72)	RA: 5h 33min 38sec	DEC: -62° 29' 21''	JD: 2451806.24
proper motion (J2000)	RA: 0.0003 arcsec/a	DEC: 0.009 arcsec/a		source: 25
radial velocity	7 km/s			source: 25
trigonometric parallax	0.012 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 271.73°	latitude: -32.77°

magnitude:

visual	3.46 (observed)	source: 30
photovisual	3.8	source: 2
photographic	4.2	source: 2

spectral information:

spectral class	F5		source: 96
Morgan-Keenan	F6Ia		source: 25
B-magnitude	4.58 ±0.05	B-V-magnitude	0.82
U-magnitude	5.13 ±0.05	U-B-magnitude	0.55

variability information:

source of data: 30

variability type	111
var. amplitude	0.62
var. period	9.84
var. epoch	2440905 14. November 1970, 12:00:00 UT
next max light	2451807.72 20. September 2000, 05:16:48 UT

sources:

2	HD and HDE Catalogs
Cannon, A.J., and E.C. Pickering, Harvard Annals, Vols 91-99, 1918-24, Cambridge, Massachusetts: Harvard University; Cannon, A.J., Harvard Annals, Vol. 100, 1925-36, Cambridge, Massachusetts: Harvard University; and Cannon, A.J., and M. Walton Mayall, Harvard Annals, Vol. 112, 1949, Cambridge, Massachusetts: Harvard University
15	FK5, FK5 Extension and FK5 Supplement
Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991
25	Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
30	GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88
96	SAO or HD/HDE Catalog
Reference from Value 1 or Reference from Value 2

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (B1950)	RA: 5h 33min 11.331sec	DEC: -62° 31' 20.2''	±0.011 arcsec
position (2000.72)	RA: 5h 33min 38sec	DEC: -62° 29' 22''	JD: 2451806.24
position (J2000)	RA: 5h 33min 37.513sec	DEC: -62° 29' 23.65''
proper motion B1950 (FK4)	RA: 0.0002 arcsec/a	DEC: 0.007 arcsec/a	±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0003 arcsec/a	DEC: 0.007 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	3.8 (accuracy: 2 decimals)
source of visual magnitude data	Arithmetic mean of maximum and minimum magnitudes of a variable star

spectral information:

spectral class	F5p
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Variable star in visual magnitude in source catalog

catalogues

source catalogue	FK4, catalogue number: 212
Durchmusterung	CP-62 487
Boss General Catalogue	6944
Henry Draper Catalogue	37350

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 5h 33min 11.3sec

DEC: -62° 31' 20''

variability informations:

variability type	DCEP	pulsating variable star
magnitute at max. brightness	3.46
magnitute at min. brightness	4.08
photometric system	visual, photovisual or Johnson's V
epoch for maximum light [JD]	2440905.3 14. November 1970, 19:12:00 UT
period [d]	9.8426
next maximum light [JD]	2451810.9008 23. September 2000, 09:37:09 UT
rising time	48 % of period

spectral information

spectral class

F4-G4Ia-II

references

to a study	Vol. I GCVS (see Kholopov et al. 1985-1988)
to a chart/photograph	Vol. I GCVS (see Kholopov et al. 1985-1988)

miscanellous

ID in the GCVS catalogue	33/9002
constellation	Dorado
notes on existence	The star is equivalent to '0339003 gam'.
There are notes in published catalog.

variability type description

variability type

description

DCEP

These are the classical cepheids, or Delta Cep-type variables. Comparatively young objects that have left the main sequence and evolved into the instability strip of the Hertzsprung-Russell (H-R) diagram, they obey the well-known Cepheid period-luminosity relation and belong to the young disk population. DCEP stars are present in open clusters. They display a certain relation between the shapes of their light curves and their periods.