catalogues and names

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

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

The Washington Visual Double Star Catalog, 1996.0

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

catalogues and names

catalogues and names	CI Ori, 31 Ori, HR 1834, HD 36167, SAO 132176, BD -1 913, WDS 05297-0106
constellation	Orion

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

position, motion, parallax:

position (J2000)	RA: 5h 29min 44sec	DEC: -1° 5' 32''
position (B1900)	RA: 5h 24min 39.2sec	DEC: -1° 10' 15''
proper motion (J2000)	RA: 0.004 arcsec/a	DEC: -0.023 arcsec/a
radial velocity	8 km/s note: spectroscopic binaries
rotational velocity	<19 km/s
trigonometric parallax	0.006 arcsec
galactic coordinates	longitude: 204.31°	latitude: -18.62°

magnitude

visual magnitude

4.71 (V on UBV Johnson system)

spectral / color information

spectral class	K5III
B-V-magnitude	1.57
U-B-magnitude	1.85
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

CI Ori

note (category: variability):

ADS 4097, cst? 4.67: -4.71V.

double/multiple star system information

separation	12.5 arcsec
mag difference (of double or brightest multiple)	5.4

note (category: double and multiple data):

CPM. Companion 9.70V, +0.71(B-V), +0.15(U-B), F7V.

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

position, motion, parallax:

position (J2000)	RA: 5h 29min 43.969sec	DEC: -1° 5' 32.36''	±0.43 arcsec	source: 16
proper motion (J2000)	RA: 0 arcsec/a	DEC: -0.022 arcsec/a		source: 25
radial velocity	8 km/s			source: 25
trigonometric parallax	0.006 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 204.31°	latitude: -18.62°

magnitude:

visual	4.71 (observed)	source: 25
photovisual	5	source: 2
photographic	6.9	source: 16

spectral information:

spectral class	K5		source: 96
Morgan-Keenan	K5III		source: 25
B-magnitude	6.28 ±0.05	B-V-magnitude	1.57
U-magnitude	8.13 ±0.05	U-B-magnitude	1.85

variability information:

source of data: 30

variability type	999
var. amplitude	0.04

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	12.7 arcsec
magnitude difference between brightest and second brightest component	5.01
position angle	87 °

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
16	PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
19	WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
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 27min 11.524sec	DEC: -1° 7' 48.08''	±0.019 arcsec
position (J2000)	RA: 5h 29min 43.998sec	DEC: -1° 5' 31.71''
proper motion B1950 (FK4)	RA: 0 arcsec/a	DEC: -0.022 arcsec/a	±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0003 arcsec/a	DEC: -0.023 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	K5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue	GC, catalogue number: 6792
Durchmusterung	BD-01 913
Boss General Catalogue	6792
Henry Draper Catalogue	36167

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000)	RA: 5h 29.7min	DEC: -1° 6'
proper motion (J2000)	RA: 0.007 arcsec/a	DEC: -0.034 arcsec/a

double/multiple star system information:

component	year	number of measures	position angle	angular separation	magnitude of 1st component	magnitude of 2nd component	spectral class(es)	discoverer code
-	1829	14	87°	12.7''	4.69	9.7	K5III	STF 725

discoverer information:

discoverer code	discoverer	reference
STF 725	Struve, F.G.W.	-

notes:

note	31 Ori. A is the variable CI Ori. Proper motion of B +029 -030.

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

position:

position (equinox 1950.0)

RA: 5h 27min 11.5sec

DEC: -1° 7' 48''

variability informations:

variability type	CST:
magnitute at max. brightness	4.67:
magnitute at min. brightness	4.71
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

K5III

references

to a study	Vol. I GCVS (see Kholopov et al. 1985-1988)
to a chart/photograph	no chart is avaible, but the star is contained in the 'Bonner Durchmusterung'

miscanellous

ID in the GCVS catalogue	60/110
constellation	Orion
notes on existence	The star is equivalent to '0600111 CK'.
There are notes in published catalog.

variability type description

variability type	description
CST	Nonvariable stars, formerly suspected to be variable and hastily designated. Further observations have not confirmed their variability.