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 (suspected variables)

catalogues and names

catalogues and names	Saiph, k Ori, NSV 02641, 53 Ori, HR 2004, HD 38771, SAO 132542, BD -9 1235, FK5: 220
constellation	Orion

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

note (category: star names):

SAIPH.

position, motion, parallax:

position (J2000)	RA: 5h 47min 45.4sec	DEC: -9° 40' 11''
position (B1900)	RA: 5h 43min 0.8sec	DEC: -9° 42' 18''
proper motion (J2000)	RA: 0.002 arcsec/a	DEC: -0.002 arcsec/a
radial velocity	21 km/s note: suspected variable radial velocity
rotational velocity	82 km/s (uncertain) (variable)
trigonometric parallax	0.015 arcsec
galactic coordinates	longitude: 214.51°	latitude: -18.5°

magnitude

visual magnitude

2.06 (V on UBV Johnson system)

spectral / color information

spectral class	B0.5Ia
B-V-magnitude	-0.17
U-B-magnitude	-1.03
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

note (category: spectra):

Deficient in ultraviolet relative to most early-type supergiants shortward of 2800A.

note (category: colors):

Color excess E(B-V) = +0.07.

variability information

variable star identification

2641

miscellaneous information

note (category: group membership):

Ori OB1.

note (category: stellar radii or diameters):

Diam. 0.00044 - 0.00045".

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

position, motion, parallax:

position (J2000)	RA: 5h 47min 45.387sec	DEC: -9° 40' 10.75''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0001 arcsec/a	DEC: -0.002 arcsec/a		source: 25
radial velocity	21 km/s			source: 25
trigonometric parallax	0.015 arcsec		±0.002 arcsec	source: 25
galactic coord. (B1950)	longitude: 214.52°	latitude: -18.5°

magnitude:

visual	2.06 (observed)	source: 25
photovisual	2.2	source: 2
photographic	2	source: 2

spectral information:

spectral class	B0		source: 96
Morgan-Keenan	B0.5Ia		source: 25
B-magnitude	1.89 ±0.05	B-V-magnitude	-0.17
U-magnitude	0.86 ±0.05	U-B-magnitude	-1.03

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
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 45min 23.013sec	DEC: -9° 41' 9.45''	±0.004 arcsec
position (J2000)	RA: 5h 47min 45.394sec	DEC: -9° 40' 10.86''
proper motion B1950 (FK4)	RA: -0.0002 arcsec/a	DEC: -0.005 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0002 arcsec/a	DEC: -0.004 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	2.2 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	B0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 220
Durchmusterung	BD-09 1235
Boss General Catalogue	7264
Henry Draper Catalogue	38771

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 5h 45min 23sec

DEC: -9° 41' 9''

variability informations:

magnitute at max. brightness	2.01
magnitute at min. brightness	2.09
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

B0

references

to a study

0807D (designation: 141G ORI)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).