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 (Vol. I-III)

catalogues and names

catalogues and names	RR Ari, 7 Ari, HR 559, HD 11763, SAO 75030, BD +22 284, FK5: 2130
constellation	Aries

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

position, motion, parallax:

position (J2000)	RA: 1h 55min 51sec	DEC: +23° 34' 38''
position (B1900)	RA: 1h 50min 16.3sec	DEC: +23° 5' 14''
proper motion (J2000)	RA: 0.009 arcsec/a	DEC: -0.013 arcsec/a
radial velocity	14 km/s
galactic coordinates	longitude: 141.48°	latitude: -36.96°

magnitude

visual magnitude

5.74 (V on UBV Johnson system)

spectral / color information

spectral class	K1III
B-V-magnitude	1.19
U-B-magnitude	1.04
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

RR Ari

note (category: variability):

EA? 6.42 - 6.84p, 47.9?d.

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

position, motion, parallax:

position (J2000)	RA: 1h 55min 51.03sec	DEC: +23° 34' 38.1''	±0.43 arcsec	source: 16
proper motion (J2000)	RA: 0.0006 arcsec/a	DEC: -0.011 arcsec/a		source: 25
radial velocity	14 km/s			source: 25
galactic coord. (B1950)	longitude: 141.49°	latitude: -36.96°

magnitude:

visual	5.74 (observed)	source: 25
photovisual	6	source: 2
photographic	6.9	source: 16

spectral information:

spectral class	K0		source: 96
Morgan-Keenan	K1III		source: 25
B-magnitude	6.93 ±0.05	B-V-magnitude	1.19
U-magnitude	7.97 ±0.05	U-B-magnitude	1.04

variability information:

source of data: 30

variability type	310
var. amplitude	0.42
var. period	47.9
var. epoch	2436493 16. October 1958, 12:00:00 UT
next max light	2452252.1 8. December 2001, 14:24:00 UT

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
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: 1h 53min 3.346sec	DEC: +23° 19' 59.23''	±0.019 arcsec
position (J2000)	RA: 1h 55min 51.015sec	DEC: +23° 34' 38.56''
proper motion B1950 (FK4)	RA: 0.0007 arcsec/a	DEC: -0.003 arcsec/a	±0.003 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0007 arcsec/a	DEC: -0.008 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	6 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	K0
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 2323
Durchmusterung	BD+22 284
Boss General Catalogue	2323
Henry Draper Catalogue	11763

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

position:

position (equinox 1950.0)

RA: 1h 53min 3.3sec

DEC: +23° 19' 59''

variability informations:

variability type	EA:	close binary eclipsing system
magnitute at max. brightness	6.42:
magnitute at min. brightness	6.84:
photometric system	photographic magnitudes
epoch for maximum light [JD]	2436493.2 16. October 1958, 16:48:00 UT
period [d]	47.9 (uncertain)
next maximum light [JD]	2452252.3 (uncertain) 8. December 2001, 19:12:00 UT
duration of the eclipse	08 % of period (uncertain)

spectral information

spectral class

K0III

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	7/10
constellation	Aries
notes on existence	The star is equivalent to '0070011 RS'.
There are notes in published catalog.

variability type description

variability type

description

EA

Eclipsing binary systems. These are binary systems with orbital planes so close to the observer's line of sight (the inclination i of the orbital plane to the plane orthogonal to the line of sight is close to 90 deg) that the components periodically eclipse each other. Consequently, the observer finds changes of the apparent combined brightness of the system with the period coincident with that of the components' orbital motion. EA Algol (Beta Persei)-type eclipsing systems. Binaries with spherical or slightly ellipsoidal components. It is possible to specify, for their light curves, the moments of the beginning and end of the eclipses. Between eclipses the light remains almost constant or varies insignificantly because of reflection effects, slight ellipsoidality of components, or physical variations. Secondary minima may be absent. An extremely wide range of periods is observed, from 0.2 to >= 10000 days. Light amplitudes are also quite different and may reach several magnitudes. EB Beta Lyrae-type eclipsing systems. These are eclipsing systems having ellipsoidal components and light curves for which it is impossible to specify the exact times of onset and end of eclipses because of a continuous change of a system's apparent combined brightness between eclipses; secondary minimum is observed in all cases, its depth usually being considerably smaller than that of the primary minimum; periods are mainly longer than 1 day. The components generally belong to early spectral types (B-A). Light amplitudes are usually <2 mag in V. EW W Ursae Majoris-type eclipsing variables. These are eclipsers with periods shorter than 1 days, consisting of ellipsoidal components almost in contact and having light curves for which it is impossible to specify the exact times of onset and end of eclipses. The depths of the primary and secondary minima are almost equal or differ insignificantly. Light amplitudes are usually <0.8 mag in V. The components generally belong to spectral types F-G and later.