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	Algenib, g Peg, gam Peg, 88 Peg, HR 39, HD 886, SAO 91781, BD +14 14, FK5: 7, WDS 00132+1511A
constellation	Pegasus

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

note (category: star names):

ALGENIB.

position, motion, parallax:

position (J2000)	RA: 0h 13min 14.2sec	DEC: +15° 11' 1''
position (2000.72)	RA: 0h 13min 16sec	DEC: +15° 11' 15''
position (B1900)	RA: 0h 8min 5.1sec	DEC: +14° 37' 40''
proper motion (J2000)	RA: 0.003 arcsec/a	DEC: -0.012 arcsec/a
radial velocity	4 km/s note: spectroscopic binaries note: orbital data avaible
rotational velocity	3 km/s (uncertain) (variable)
trigonometric parallax	-0.002 arcsec
galactic coordinates	longitude: 109.43°	latitude: -46.68°

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

RV also varies with period 0.151750125d.

magnitude

visual magnitude

2.83 (V on UBV Johnson system)

spectral / color information

spectral class	B2IV
B-V-magnitude	-0.23
U-B-magnitude	-0.87
R-I-magnitude
IR-note	object is infrared source (Engels et al., 1982)

note (category: spectra):

Lyman beta observed from COPERNICUS. Chlorine in spectrum.

note (category: colors):

Color excess E(B-V) = +0.01.

variability information

variable star identification

Gam Peg

note (category: variability):

Beta C 2.80 - 2.87V, 0.1517495d.

double/multiple star system information

number of components of multiple star system	3
separation	163.4 arcsec
mag difference (of double or brightest multiple)	8.9
component ID	AB
note	Worley (1978) update of the IDS

note (category: spectroscopic binaries):

6.830713d, K 1.34k/s, V0 2.5k/s, asini 0.181Solar R.

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

position, motion, parallax:

position (J2000)	RA: 0h 13min 14.154sec	DEC: +15° 11' 0.8''	±0.06 arcsec	source: 15
position (2000.72)	RA: 0h 13min 16sec	DEC: +15° 11' 15''	JD: 2451809.17
proper motion (J2000)	RA: 0.0002 arcsec/a	DEC: -0.012 arcsec/a		source: 25
radial velocity	4 km/s			source: 25
galactic coord. (B1950)	longitude: 109.45°	latitude: -46.68°

magnitude:

visual	2.83 (observed)	source: 20
photovisual	2.9	source: 2

spectral information:

spectral class	B2		source: 96
Morgan-Keenan	B2IV		source: 25
B-magnitude	2.6 ±0.011	B-V-magnitude	-0.23
U-magnitude	1.73 ±0.013	U-B-magnitude	-0.86

variability information:

source of data: 30

variability type	140
var. amplitude	0.11
var. period	0.15
var. epoch	2441225 30. September 1971, 12:00:00 UT
next max light	2451809.3 21. September 2000, 19:12:00 UT

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	163.4 arcsec
magnitude difference between brightest and second brightest component	9
position angle	286 °

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
19	WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
20	Catalogue of Homogeneous Means in the UBV System
Mermilliod, J.C., Catalogue of Homogeneous Means in the UBV System, Institut d'Astronomie, Universite de Lausanne, 1994
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: 0h 10min 39.447sec	DEC: +14° 54' 20.57''	±0.003 arcsec
position (2000.72)	RA: 0h 13min 16sec	DEC: +15° 11' 16''	JD: 2451809.17
position (J2000)	RA: 0h 13min 14.156sec	DEC: +15° 11' 0.8''
proper motion B1950 (FK4)	RA: 0.0002 arcsec/a	DEC: -0.007 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0002 arcsec/a	DEC: -0.012 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	2.9 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	B2
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 7
Durchmusterung	BD+14 14
Boss General Catalogue	238
Henry Draper Catalogue	886

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

position and proper motion:

position (J2000)	RA: 0h 13.2min	DEC: +15° 11'
proper motion (J2000)	RA: 0.003 arcsec/a	DEC: -0.012 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
AB	1879	2	286°	161.8''	2.83	11.8	B2IV	BUP 3
	1907		-	163.4''
BC	1879	2	199°	21''	11.8	12.4	-	BUP 3
	1907		196°	20.4''

discoverer information:

discoverer code	discoverer	reference
BUP 3	-	-

notes:

note	Gamma Peg. Beta CMa variable and spectroscopic binary.

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

position:

position (equinox 1950.0)

RA: 0h 10min 39.4sec

DEC: +14° 54' 21''

variability informations:

variability type	BCEP	pulsating variable star
magnitute at max. brightness	2.78
magnitute at min. brightness	2.89
photometric system	visual, photovisual or Johnson's V
epoch for maximum light [JD]	2441224.64 30. September 1971, 03:21:36 UT
period [d]	0.151750125
next maximum light [JD]	2451809.21121875 21. September 2000, 17:04:09 UT
rising time	50 % of period

spectral information

spectral class

B2IV

references

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

miscanellous

ID in the GCVS catalogue	62/9003
constellation	Pegasus
notes on existence	The star is equivalent to '0629005 eps'.

variability type description

variability type

description

BCEP

Variables of the Beta Cephei type (Beta Cep, Beta CMa), which are pulsating O8-B6 I-V stars with periods of light and radial-velocity variations in the range of 0.1 - 0.6 days and light amplitudes from 0.01 to 0.3 mag in V. The light curves are similar in shape to average radial-velocity curves but lag in phase by a quarter of the period, so that maximum brightness corresponds to maximum contraction, i.e., to minimum stellar radius. The majority of these stars probably show radial pulsations, but some (V649 Per) display nonradial pulsations; multiperiodicity is characteristic of many of these stars.