99 Aquarii

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

position, motion, parallax:

position (J2000)	RA: 23h 26min 2.8sec	DEC: -20° 38' 31''
position (B1900)	RA: 23h 20min 47.6sec	DEC: -21° 11' 24''
proper motion (J2000)	RA: -0.052 arcsec/a	DEC: -0.058 arcsec/a
radial velocity	16 km/s note: suspected variable radial velocity
trigonometric parallax	0.007 arcsec
galactic coordinates	longitude: 46.74°	latitude: -69.46°

magnitude

visual magnitude

4.39
(V on UBV Johnson system)

spectral / color information

spectral class	K5III
B-V-magnitude	1.47
U-B-magnitude	1.81
R-I-magnitude
IR-note	object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

variability information

variable star identification

14554

miscellaneous information

note (category: group membership):

Sirius group.

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

position, motion, parallax:

magnitude:

visual	4.39 (observed)	source: 25
photovisual	4.5	source: 2

spectral information:

variability information:

source of data: 28

variability type	9
var. amplitude	0.1

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
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: 23h 23min 25.298sec	DEC: -20° 54' 58.53''	ą0.015 arcsec
position (J2000)	RA: 23h 26min 2.767sec	DEC: -20° 38' 30.91''
proper motion B1950 (FK4)	RA: -0.0038 arcsec/a	DEC: -0.054 arcsec/a	ą0.003 arcsec/a in RA ą0.003 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0037 arcsec/a	DEC: -0.058 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	K5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

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

position:

position (equinox 1950.0)

RA: 23h 23min 25.3sec

DEC: -20° 54' 59''

variability informations:

magnitute at max. brightness	4.35
magnitute at min. brightness	4.45
photometric system	visual, photovisual or Johnson's V

spectral information

spectral class

references

to a study

730774D (designation: 20106)

catalogues and names	NSV 14554, 99 Aqr, HR 8906, HD 220704, SAO 191900, BD -21 6420
constellation	Aquarius