RW Aurigae

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

position, motion, parallax:

position (J2000)	RA: 5h 7min 49.485sec	DEC: +30° 24' 4.4''	ą0.44 arcsec	source: 16
position (2000.74)	RA: 5h 7min 52sec	DEC: +30° 24' 7''	JD: 2451813.20
proper motion (J2000)	RA: -0.0008 arcsec/a	DEC: -0.034 arcsec/a		source: 16
galactic coord. (B1950)	longitude: 174.21°	latitude: -6°

magnitude:

visual	10.37 (observed)	source: 20
photographic	10.9	source: 16

spectral information:

spectral class	G0		source: 96
Morgan-Keenan	G5Ve		source: 30
B-magnitude	10.96 ą0.026	B-V-magnitude	0.59
U-magnitude	10.67 ą0.048	U-B-magnitude	-0.29

variability information:

source of data: 30

variability type	210
var. amplitude	4

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	1.2 arcsec
position angle	246 °

sources:

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

position and proper motion:

position (J2000)	RA: 5h 7.8min	DEC: +30° 24'
proper motion (J2000)	RA: 0.004 arcsec/a	DEC: -0.044 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
-	1944	3	254°	1.2''	-	-	-	JOY 5
-	1960	3	246°	-	-	-	-	JOY 5

discoverer information:

discoverer code	discoverer	reference
JOY 5	-	-

notes:

note	RW Aur, prototype of its class.

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

position:

position (equinox 1950.0)

RA: 5h 4min 38sec

DEC: +30° 20' 6''

ą 1 sec / ą 0.1 arcmin

variability informations:

variability type	INT	eruptive variable star
magnitute at max. brightness	9.6
magnitute at min. brightness	13.6
photometric system	photographic magnitudes

spectral information

spectral class

G5Ve(T)

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	8/15
constellation	Auriga
notes on existence	The star is equivalent to '0080016 RX'.
There are notes in published catalog.

variability type description

variability type

description

INT

Orion variables. Irregular, eruptive variables connected with bright or dark diffuse nebulae or observed in the regions of these nebulae. Some of them may show cyclic light variations caused by axial rotation. In the Spectrum-Luminosity diagram, they are found in the area of the main sequence and subgiants. They are probably young objects that, during the course of further evolution, will become light-constant stars on the zero-age main
sequence (ZAMS). The range of brightness variations may reach several magnitudes. In the case of rapid light variations having been observed (up to 1 mag in 1-10 days), the letter "S" is added to the symbol for the type (INS).
This type may be divided into the following subtypes: INA, INB, INT, IN(YY).

INA
Orion variables of early spectral types (B-A or Ae). They are often characterized by occasional abrupt Algol-like fadings (T Ori);

INB
Orion variables of intermediate and late spectral types, F-M or Fe-Me (BH Cep, AH Ori). F-type stars may show Algol-like fadings similar to those of many INA stars; K-M stars may produce flares along with irregular light variations;

INT
Orion variables of the T Tauri type. Stars are assigned to this type on the basis of the following (purely spectroscopic) criteria: spectral types are in the range Fe-Me. The spectra of most typical stars resemble the spectrum of the solar chromosphere. The feature specific to the type is the presence of
the flourescent emission lines Fe II 4046, 4132 A (anomalously intense in the spectra of these stars), emission lines [Si II] and [O I], as well as the absorption line Li I 6707 A. These variables are usually observed only in diffuse nebulae. If it is not apparent that the star is associated with a nebula, the letter "N" in the symbol for the type may be omitted, e.g., IT (RW AUR);

IN(YY)
Some Orion variables (YY Ori) show the presence of absorption components on the redward sides of emission lines, indicating the infall of matter toward the stars' surfaces. In such cases, the symbol for the type may be accompanied by the symbol "YY".