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	27 Aql, HR 7336, HD 181440, SAO 143292, BD -1 3716
constellation	Aquila

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

position, motion, parallax:

position (J2000)	RA: 19h 20min 35.7sec	DEC: -0° 53' 32''
position (B1900)	RA: 19h 15min 26.1sec	DEC: -1° 4' 42''
proper motion (J2000)	RA: 0.006 arcsec/a	DEC: 0.006 arcsec/a
radial velocity	-27 km/s note: spectroscopic binaries
rotational velocity	77 km/s (uncertain) (variable)
trigonometric parallax	0.008 arcsec
galactic coordinates	longitude: 35.47°	latitude: -6.89°

magnitude

visual magnitude

5.49 (V on UBV Johnson system)

spectral / color information

spectral class	B9III
B-V-magnitude	-0.04
U-B-magnitude	-0.23

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

position, motion, parallax:

position (J2000)	RA: 19h 20min 35.694sec	DEC: -0° 53' 31.9''	±0.35 arcsec	source: 17
proper motion (J2000)	RA: 0.0007 arcsec/a	DEC: 0.003 arcsec/a		source: 25
radial velocity	-27 km/s			source: 25
trigonometric parallax	0.008 arcsec		±0.001 arcsec	source: 25
galactic coord. (B1950)	longitude: 35.48°	latitude: -6.89°

magnitude:

visual	5.49 (observed)	source: 25
photovisual	5.5	source: 2
photographic	5.4	source: 16

spectral information:

spectral class	B9		source: 96
Morgan-Keenan	B9III		source: 25
B-magnitude	5.45 ±0.05	B-V-magnitude	-0.04
U-magnitude	5.22 ±0.05	U-B-magnitude	-0.23

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
17	ACRS
Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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 18min 0.843sec	DEC: -0° 59' 11.83''	±0.022 arcsec
position (J2000)	RA: 19h 20min 35.677sec	DEC: -0° 53' 31.61''
proper motion B1950 (FK4)	RA: 0.0002 arcsec/a	DEC: 0.007 arcsec/a	±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0004 arcsec/a	DEC: 0.006 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5.5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

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

catalogues

source catalogue	GC, catalogue number: 26673
Durchmusterung	BD-01 3716
Boss General Catalogue	26673
Henry Draper Catalogue	181440