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 (suspected variables)

catalogues and names

catalogues and names	NSV 11808, 20 Aql, HR 7279, HD 179406, SAO 143134, BD -8 4887, FK5: 1500
constellation	Aquila

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

position, motion, parallax:

position (J2000)	RA: 19h 12min 40.7sec	DEC: -7° 56' 22''
position (B1900)	RA: 19h 7min 15.2sec	DEC: -8° 6' 24''
proper motion (J2000)	RA: 0.016 arcsec/a	DEC: -0.006 arcsec/a
radial velocity	-15 km/s note: variable radial velocity
rotational velocity	187 km/s (uncertain) (variable)
galactic coordinates	longitude: 28.23°	latitude: -8.31°

magnitude

visual magnitude

5.34 (V on UBV Johnson system)

spectral / color information

spectral class	B3V
B-V-magnitude	0.13
U-B-magnitude	-0.44

variability information

variable star identification

11808

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

position, motion, parallax:

position (J2000)	RA: 19h 12min 40.717sec	DEC: -7° 56' 22.3''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: 0.0011 arcsec/a	DEC: -0.006 arcsec/a		source: 25
radial velocity	-15 km/s			source: 25
galactic coord. (B1950)	longitude: 28.23°	latitude: -8.31°

magnitude:

visual	5.34 (observed)	source: 25
photovisual	5.4	source: 2
photographic	5.2	source: 2

spectral information:

spectral class	B3		source: 96
Morgan-Keenan	B3V		source: 25
B-magnitude	5.47 ±0.05	B-V-magnitude	0.13
U-magnitude	5.03 ±0.05	U-B-magnitude	-0.44

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
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 (B1950)	RA: 19h 9min 57.956sec	DEC: -8° 1' 28.93''	±0.005 arcsec
position (J2000)	RA: 19h 12min 40.718sec	DEC: -7° 56' 22.33''
proper motion B1950 (FK4)	RA: 0.0009 arcsec/a	DEC: -0.007 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0011 arcsec/a	DEC: -0.007 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.4 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	B3
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 1500
Durchmusterung	BD-08 4887
Boss General Catalogue	26461
Henry Draper Catalogue	179406

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

position:

position (equinox 1950.0)

RA: 19h 9min 58sec

DEC: -8° 1' 29''

variability informations:

magnitute at max. brightness	5.33
magnitute at min. brightness	5.36
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

B3

references

to a study

290477D (designation: ZI 1628)

miscanellous

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