catalogues and names

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

The Washington Visual Double Star Catalog, 1996.0

catalogues and names

catalogues and names

HD 177442, SAO 142993, BD -4 4683, WDS 19050-0402B

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

position, motion, parallax:

position (J2000)	RA: 19h 4min 56,383sec	DEC: -4° 2' 27,17''	±0,18 arcsec	source: 16
position (2001,21)	RA: 19h 5min 0sec	DEC: -4° 2' 20''	JD: 2451987,35
proper motion (J2000)	RA: 0,0003 arcsec/a	DEC: -0,038 arcsec/a		source: 16
radial velocity	-59 km/s			source: 11
galactic coord. (B1950)	longitude: 30,87°	latitude: -4,84°

magnitude:

visual	7,017 (observed)	source: 27
photovisual	7,1	source: 16
photographic	8,2	source: 2

spectral information:

spectral class	K0		source: 96
B-magnitude	8,553 ±0,05	B-V-magnitude	1,536

double/multiple star system information:

source of data: 27

separation between brightest and second brightest component	38,8 arcsec
magnitude difference between brightest and second brightest component	1,6

component	magnitude	spectral class	catalogue(s)/name(s)
A	5,42	K0	15 Aql, HR 7225, HD 177463, SAO 142996
B	7,017	K0

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
11	General Catalogue of Stellar Radial Velocities
Wilson, R.E., General Catalogue of Stellar of Stellar Radial Radial Velocities, Washington, DC: Carnegie Institute of Washington, 1953
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
27	Catalog of Red Magnitudes (CRM)
Warren, W.H. Jr., Northern Hemisphere Catalog of Red Magnitudes, 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 2min 17,981sec	DEC: -4° 6' 59,8''	±0,041 arcsec
position (2001,21)	RA: 19h 5min 0sec	DEC: -4° 2' 19''	JD: 2451987,35
position (J2000)	RA: 19h 4min 56,344sec	DEC: -4° 2' 26,75''
proper motion B1950 (FK4)	RA: -0,0003 arcsec/a	DEC: -0,032 arcsec/a	±0,007 arcsec/a in RA ±0,006 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0,0001 arcsec/a	DEC: -0,033 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	7,1 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

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

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue	GC, catalogue number: 26235
Durchmusterung	BD-04 4683
Boss General Catalogue	26235
Henry Draper Catalogue	177442

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

position and proper motion:

position (J2000)	RA: 19h 5min	DEC: -4° 2'
proper motion (J2000)	RA: 0,029 arcsec/a	DEC: -0,027 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
-	1823	30	207°	35,6''	5,42	7,2	K0IV	SHJ 286
	1976		209°	38,8''

discoverer information:

discoverer code	discoverer	reference
SHJ 286	South & Herschel	-

notes:

note	15 Aql. B is BD-04@4683. Proper motion of B +034 -036.