catalogues and names

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

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

The Washington Visual Double Star Catalog, 1996.0

Combined General Catalogue of Variable Stars (Vol. I-III)

catalogues and names

catalogues and names	i Phe, iot Phe, HR 8949, HD 221760, SAO 231675, CD -43 15420, FK5: 1617, WDS 23351-4237
constellation	Phoenix

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

position, motion, parallax:

position (J2000)	RA: 23h 35min 4.6sec	DEC: -42° 36' 54''
position (2000.72)	RA: 23h 35min 7sec	DEC: -42° 36' 40''
position (B1900)	RA: 23h 29min 41.8sec	DEC: -43° 10' 5''
proper motion (J2000)	RA: 0.046 arcsec/a	DEC: -0.001 arcsec/a
radial velocity	19 km/s note: variable radial velocity
rotational velocity	22 km/s (uncertain) (variable)
trigonometric parallax	0.005 arcsec
galactic coordinates	longitude: 343.07°	latitude: -68.07°

magnitude

visual magnitude

4.71 (V on UBV Johnson system)

spectral / color information

spectral class	A2VpSrCrEu
B-V-magnitude	0.08
U-B-magnitude	0.07
R-I-magnitude

note (category: spectra):

Weak positive magnetic field.

variability information

variable star identification

Iot Phe

note (category: variability):

Alpha CV 4.70 - 4.75V, about 12.5d. Magnetic variable.

double/multiple star system information

separation	7.7 arcsec
mag difference (of double or brightest multiple)	8
note	Worley (1978) update of the IDS

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

position, motion, parallax:

position (J2000)	RA: 23h 35min 4.565sec	DEC: -42° 36' 54.4''	±0.06 arcsec	source: 15
position (2000.72)	RA: 23h 35min 7sec	DEC: -42° 36' 40''	JD: 2451809.25
proper motion (J2000)	RA: 0.0042 arcsec/a	DEC: -0.001 arcsec/a		source: 25
radial velocity	19 km/s			source: 25
trigonometric parallax	0.005 arcsec		-	source: 25
galactic coord. (B1950)	longitude: 343.07°	latitude: -68.07°

magnitude:

visual	4.71 (observed)	source: 25
photovisual	4.8	source: 2
photographic	4.9	source: 2

spectral information:

spectral class	A2		source: 96
Morgan-Keenan	A2VpSrCrEu		source: 25
B-magnitude	4.79 ±0.05	B-V-magnitude	0.08
U-magnitude	4.86 ±0.05	U-B-magnitude	0.07

variability information:

source of data: 30

variability type	160
var. amplitude	0.05
var. period	12.5

double/multiple star system information:

source of data: 19

separation between brightest and second brightest component	6.7 arcsec
magnitude difference between brightest and second brightest component	8.1
position angle	270 °

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
19	WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
25	Bright Star Catalogue, 5th edition
Hoffleit, D. and Warren, W.H. Jr., The Bright Star Catalogue, 5th Revised Edition, Version 2, 1994
30	GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88
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 32min 23.52sec	DEC: -42° 53' 30.27''	±0.011 arcsec
position (2000.72)	RA: 23h 35min 7sec	DEC: -42° 36' 40''	JD: 2451809.25
position (J2000)	RA: 23h 35min 4.565sec	DEC: -42° 36' 54.32''
proper motion B1950 (FK4)	RA: 0.004 arcsec/a	DEC: 0.005 arcsec/a	±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0042 arcsec/a	DEC: 0 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	4.8 (accuracy: 2 decimals)
source of visual magnitude data	Taken from the "Henry Draper Catalogue".

spectral information:

spectral class	A2p
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	FK4, catalogue number: 1617
Durchmusterung	CD-4315420
Boss General Catalogue	32787
Henry Draper Catalogue	221760

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

position and proper motion:

position (J2000)	RA: 23h 35.1min	DEC: -42° 37'
proper motion (J2000)	RA: 0.046 arcsec/a	DEC: -0.001 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
-	1925	4	270°	6.7''	4.71	12.8	A2Vp	B 603

discoverer information:

discoverer code	discoverer	reference
B 603	Bos, W.H. van den	-

notes:

note	Iota Phe. A variable of the Alpha CVn-type, spectrum A2VpSrCrEu.

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)

position:

position (equinox 1950.0)

RA: 23h 32min 23.5sec

DEC: -42° 53' 30''

variability informations:

variability type	ACV	rotating variable star
magnitute at max. brightness	4.7
magnitute at min. brightness	4.75
photometric system	visual, photovisual or Johnson's V
period [d]	12.5 (uncertain)

spectral information

spectral class

A2Vp(Sr-Cr-Eu)

references

to a study	Vol. I GCVS (see Kholopov et al. 1985-1988)
to a chart/photograph	no chart is avaible, but the star is contained in the 'Cordoba Durchmusterung'

miscanellous

ID in the GCVS catalogue	64/9009
constellation	Phoenix
notes on existence	The star is equivalent to '0649014 ksi'.
There are notes in published catalog.

variability type description

variability type

description

ACV

Alpha2 Canum Venaticorum variables. These are main-sequence stars with spectral types B8p-A7p and displaying strong magnetic fields. Spectra show abnormally strong lines of Si, Sr, Cr, and rare earths whose intensities vary with rotation. They exhibit magnetic field and brightness changes (periods of 0.5-160 days or more). The amplitudes of the brightness changes are usually withine 0.01-0.1 mag in V. ACVO Rapidly oscillating Alpha2 CVn variables. These are nonradially pulsating, rotating magnetic variables of Ap spectral type (DO Eri). Pulsation periods are in the range of 6-12 mmag (0.004-0.01 days), while amplitudes of light variation caused by the pulsation are about 0.01 mag in V. The pulsational variations are superposed on those caused by rotation.