Alshain


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 (suspected variables)


catalogues and names Alshain, b Aql, NSV 12557, 60 Aql, HR 7602, HD 188512, SAO 125235, FK5: 749, WDS 19553+0624A
constellation Aquila

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

note (category: star names): ALSHAIN; Alschairn.

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

position, motion, parallax:

position (J2000) RA: 19h 55min 18,8sec DEC: +6 24' 24''
position (J1900) RA: 19h 50min 24sec DEC: +6 9' 25''
proper motion (J2000) RA: 0,048 arcsec/a DEC: -0,482 arcsec/a
radial velocity -40 km/s
note: variable radial velocity
rotational velocity =<16 km/s (uncertain) (variable)
trigonometric parallax 0,07 arcsec
note (category: dynamical parallaxes): 0.049".

magnitude

visual magnitude 3,71
(V on UBV Johnson system)

spectral / color information

spectral class G8IV
B-V-magnitude 0,86
U-B-magnitude 0,48
R-I-magnitude 0,49

variability information

variable star identification 12557
note (category: variability): ADS 13110A, amp. 0.05V.

double/multiple star system information

number of components of multiple star system 3
separation 175 arcsec
mag difference (of double or brightest multiple) 7,7
component ID AC
note (category: double and multiple data): AB binary. B 12v dM3 at 13".

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

position, motion, parallax:

position (J2000) RA: 19h 55min 18,799sec DEC: +6 24' 24,29'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0032 arcsec/a DEC: -0,482 arcsec/a source: 25
radial velocity -40 km/s source: 25
trigonometric parallax 0,07 0,007 arcsec source: 25
galactic coord. (B1950) longitude: 46,14 latitude: -11,09
GCI unit vector (J2000) X: 0,479175 Y: -0,870597 Z: 0,111586

magnitude:

visual 3,71 (observed) source: 25
photovisual 3,9 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan G8IV source: 25
B-magnitude 4,57 0,05 B-V-magnitude 0,86
U-magnitude 5,05 0,05 U-B-magnitude 0,48

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 12,9 arcsec
magnitude difference between brightest and second brightest component 8,1
position angle 6

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: 19h 52min 51,384sec DEC: +6 16' 49,84'' 0,003 arcsec
position (J2000) RA: 19h 55min 18,797sec DEC: +6 24' 24,31''
proper motion J1950 (FK4) RA: 0,0029 arcsec/a DEC: -0,479 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0032 arcsec/a DEC: -0,481 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,9 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

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

catalogues

source catalogue FK4, catalogue number: 749
Durchmusterung BD+06 4357
Boss General Catalogue 27587
Henry Draper Catalogue 188512

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

position and proper motion:

position (J2000) RA: 19h 55,3min DEC: +6 24'
proper motion (J2000) RA: 0,048 arcsec/a DEC: -0,482 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 1852 24 17 12,4'' 3,71 11,8 G8IV STT 532
1976 6 12,9''
AC 1879 4 347 151,9'' 3,9 10,5 - STT 532
1925 348 175''

discoverer information:

discoverer code discoverer reference
STT 532 Struve, O. -

notes:

note Beta Aql. A is variable.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 19h 52min 51,4sec DEC: +6 16' 50''

variability informations:

magnitute at max. brightness 3,68
magnitute at min. brightness 3,74
photometric system visual, photovisual or Johnson's V

spectral information

spectral class G8

references

to a study 140098D (designation: BETA AQL)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).