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	l And, lam And, 16 And, HR 8961, HD 222107, SAO 53204, BD +45 4283, FK5: 890, WDS 23376+4627A
constellation	Andromeda

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

position, motion, parallax:

position (J2000)	RA: 23h 37min 33.9sec	DEC: +46° 27' 29''
position (B1900)	RA: 23h 32min 40sec	DEC: +45° 54' 59''
proper motion (J2000)	RA: 0.162 arcsec/a	DEC: -0.421 arcsec/a
radial velocity	7 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible
rotational velocity	<19 km/s
trigonometric parallax	0.05 arcsec
galactic coordinates	longitude: 109.9°	latitude: -14.53°

magnitude

visual magnitude

3.82 (V on UBV Johnson system)

spectral / color information

spectral class	G8III-IV
B-V-magnitude	1.01
U-B-magnitude	0.69
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

Lam And

note (category: variability):

RS 3.69 - 3.97V, 4.74 - 5.13B, 54.20d. Amp. and cycle length vary in period 3200d. Also 0.25m var. in period about 50d. H and K emission correlated with 56d light period.

double/multiple star system information

number of components of multiple star system	4
separation	217.6 arcsec
mag difference (of double or brightest multiple)	6.5
component ID	AC
note	Worley (1978) update of the IDS

note (category: spectroscopic binaries):

20.5212d, K 6.6k/s, V0 +6.8k/s, asini 1.86. Radio binary. Unresolved by speckle interferometry. Possible radio emitter.

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

position, motion, parallax:

position (J2000)	RA: 23h 37min 33.854sec	DEC: +46° 27' 29.43''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0157 arcsec/a	DEC: -0.421 arcsec/a		source: 25
radial velocity	7 km/s			source: 25
trigonometric parallax	0.05 arcsec		±0.005 arcsec	source: 25
galactic coord. (B1950)	longitude: 109.91°	latitude: -14.53°

magnitude:

visual	3.7 (observed)	source: 31
photovisual	4	source: 2

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	G8III-IV		source: 25
B-magnitude	4.83 ±0.05	B-V-magnitude	1.01
U-magnitude	5.52 ±0.05	U-B-magnitude	0.69

variability information:

source of data: 30

variability type	273
var. amplitude	0.28
var. period	54.2
var. epoch	2443886 12. January 1979, 12:00:00 UT
next max light	2452232.8 19. November 2001, 07:12:00 UT

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	47.5 arcsec
magnitude difference between brightest and second brightest component	9.5
position angle	199 °

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
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
31	CRM' (non-GCVS variable data)
Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 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: 23h 35min 6.52sec	DEC: +46° 11' 13.82''	±0.004 arcsec
position (J2000)	RA: 23h 37min 33.857sec	DEC: +46° 27' 29.45''
proper motion B1950 (FK4)	RA: 0.0154 arcsec/a	DEC: -0.416 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0157 arcsec/a	DEC: -0.421 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4 (accuracy: 2 decimals)
source of visual magnitude data	Arithmetic mean of maximum and minimum magnitudes of a variable star

spectral information:

spectral class	K0
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: 890
Durchmusterung	BD+45 4283
Boss General Catalogue	32832
Henry Draper Catalogue	222107

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

position and proper motion:

position (J2000)	RA: 23h 37.6min	DEC: +46° 27'
proper motion (J2000)	RA: 0.162 arcsec/a	DEC: -0.421 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	1908	1	199°	47.5''	3.82	13.3	G8III-IV	STT
AC	1868	5	93°	222.2''	3.82	10.5	-	STT
	1923		87°	216.5''
CD	1908	1	158°	68.5''	10.5	11.5	-	BUP 238

discoverer information:

discoverer code	discoverer	reference
STT	Struve, O.
BUP 238	-	-

notes:

note	Lambda And. A is a spectroscopic binary and light variable. AB is optical.

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

position:

position (equinox 1950.0)

RA: 23h 35min 6.5sec

DEC: +46° 11' 14''

variability informations:

variability type	RS	eruptive variable star
magnitute at max. brightness	3.69
magnitute at min. brightness	3.97
photometric system	visual, photovisual or Johnson's V
epoch for maximum light [JD]	2443886 12. January 1979, 12:00:00 UT
period [d]	54.2
next maximum light [JD]	2452232.8 19. November 2001, 07:12:00 UT

spectral information

spectral class

G8III-IV

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	1/9011
constellation	Andromeda
There are notes in published catalog.

variability type description

variability type

description

RS

Eruptive variables of the RS Canum Venaticorum type. This type is ascribed to close binary systems with spectra showing Ca II H and K in emission, their components having enhanced chromospheric activity that causes quasi-periodic light variability. The period of variation is close to the orbital one, and the variability amplitude is usually as great as 0.2 mag in V (UX Ari). They are X-ray sources and rotating variables. RS CVn itself is also an eclipsing system.