catalogues and names

The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

catalogues and names

catalogues and names	l Aql, 16 Aql, HR 7236, HD 177756, SAO 143021, BD -5 4876, FK5: 717
constellation	Aquila

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

position, motion, parallax:

position (J2000)	RA: 19h 6min 14.9sec	DEC: -4° 52' 57''
position (B1900)	RA: 19h 0min 56.5sec	DEC: -5° 1' 57''
proper motion (J2000)	RA: -0.017 arcsec/a	DEC: -0.09 arcsec/a
radial velocity	-12 km/s note: variable radial velocity
rotational velocity	176 km/s (uncertain) (variable)
trigonometric parallax	0.032 arcsec
galactic coordinates	longitude: 30.26°	latitude: -5.51°

magnitude

visual magnitude

3.44 (V on UBV Johnson system)

spectral / color information

spectral class	B9Vn
B-V-magnitude	-0.09
U-B-magnitude	-0.27
R-I-magnitude
IR-note	object is infrared source (Engels et al., 1982)

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

position, motion, parallax:

position (J2000)	RA: 19h 6min 14.941sec	DEC: -4° 52' 57.14''	±0.06 arcsec	source: 15
proper motion (J2000)	RA: -0.0012 arcsec/a	DEC: -0.09 arcsec/a		source: 25
radial velocity	-12 km/s			source: 25
trigonometric parallax	0.032 arcsec		±0.003 arcsec	source: 25
galactic coord. (B1950)	longitude: 30.27°	latitude: -5.51°

magnitude:

visual	3.44 (observed)	source: 25
photovisual	3.6	source: 2
photographic	3.5	source: 2

spectral information:

spectral class	B9		source: 96
Morgan-Keenan	B9Vn		source: 25
B-magnitude	3.35 ±0.05	B-V-magnitude	-0.09
U-magnitude	3.08 ±0.05	U-B-magnitude	-0.27

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 3min 35.688sec	DEC: -4° 57' 32.74''	±0.004 arcsec
position (J2000)	RA: 19h 6min 14.938sec	DEC: -4° 52' 57.01''
proper motion B1950 (FK4)	RA: -0.0014 arcsec/a	DEC: -0.088 arcsec/a	±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0012 arcsec/a	DEC: -0.088 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	3.5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	B9
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 717
Durchmusterung	BD-05 4876
Boss General Catalogue	26285
Henry Draper Catalogue	177756