g Persei


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. The Washington Visual Double Star Catalog, 1996.0

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


catalogues and names g Per, gam Per, 23 Per, HR 915, HD 18925, SAO 23789, FK5: 108, WDS 03048+5330A
constellation Perseus

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


object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 3h 4min 47,8sec DEC: +53 30' 23''
position (J1900) RA: 2h 57min 32,9sec DEC: +53 6' 54''
proper motion (J2000) RA: 0 arcsec/a DEC: -0,005 arcsec/a
radial velocity 3 km/s
note: spectroscopic binaries, double lined spectra
note: orbital data avaible
rotational velocity =<50 km/s (uncertain) (variable)
trigonometric parallax 0,016 arcsec

magnitude

visual magnitude 2,93
(V on UBV Johnson system)

spectral / color information

spectral class G8III+A2V
B-V-magnitude 0,7
U-B-magnitude 0,45
R-I-magnitude 0,45

double/multiple star system information

number of components of multiple star system 3
separation 57 arcsec
mag difference (of double or brightest multiple) 8,6
component ID AB
note (category: double and multiple data): SKYLAB observations indicate cool star with hot companion. Components Aa, 14.65y, a = 0.159". Physical nature of B, 11m at 57", uncertain.
note (category: spectroscopic binaries): 5350d, K 12.7 or 21.9k/s, V0 +2.5k/s, msin3i 4.87, asini 648. vsini of secondary 50k/s. Resolved by speckle interferometry 1981.67, sep. 0.284", 1983.93, sep. 0.27".

miscellaneous information

note (category: miscellaneous): Close to error box of X-ray source 3U0305+53.

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

position, motion, parallax:

position (J2000) RA: 3h 4min 47,791sec DEC: +53 30' 23,29'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0 arcsec/a DEC: -0,005 arcsec/a source: 25
radial velocity 3 km/s source: 25
trigonometric parallax 0,016 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 142,07 latitude: -4,34
GCI unit vector (J2000) X: 0,411646 Y: 0,429248 Z: 0,803924

magnitude:

visual 2,93 (observed) source: 25
photovisual 3,1 source: 2

spectral information:

spectral class F5 source: 96
Morgan-Keenan G8III+A2V source: 25
B-magnitude 3,63 0,05 B-V-magnitude 0,7
U-magnitude 4,08 0,05 U-B-magnitude 0,45

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 57 arcsec
magnitude difference between brightest and second brightest component 7,7
position angle 326

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
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 (J1950) RA: 3h 1min 9,595sec DEC: +53 18' 44,29'' 0,004 arcsec
position (J2000) RA: 3h 4min 47,788sec DEC: +53 30' 23,24''
proper motion J1950 (FK4) RA: 0 arcsec/a DEC: -0,002 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0001 arcsec/a DEC: -0,005 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

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

catalogues

source catalogue FK4, catalogue number: 108
Durchmusterung BD+52 654
Boss General Catalogue 3664
Henry Draper Catalogue 18925

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

position and proper motion:

position (J2000) RA: 3h 4,8min DEC: +53 30'
proper motion (J2000) RA: 0 arcsec/a DEC: -0,005 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
Aa 1939 21 49 0,1'' 2,93 - G8III+A2V WRH
1993 69 -
Aa-B 1879 4 324 57,7'' 3,1 10,8 G8III+A2V HJ 2170
1938 326 57''

discoverer information:

discoverer code discoverer reference
WRH Wilson, R.H.
HJ 2170 Herschel, J. -

notes:

note Gamma Per. Also a spectroscopic binary. Spectrum composite; G8III+A2V. Now resolved by speckle interferometry. B, at 57", is uncertainly physical.

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

position:

position (J1950) RA: 3h 1min 9,6sec DEC: +53 18' 44''

variability informations:

variability type EA/GS close binary eclipsing system
magnitute at max. brightness 3,63
magnitute amplitude 0,55
photometric system

references

to a study R.F.Griffin, S&T 81, No.6, 598, 1991.
to a chart/photograph no chart is avaible, but the star is contained in the 'Bonner Durchmusterung'

miscanellous

ID in the GCVS catalogue 63/9003
constellation Perseus
notes on existence The star is equivalent to '71055'.

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.
GS Systems with one or both giant and supergiant components; one of the components may be a main sequence star.