catalogues and names

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

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

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

catalogues and names

catalogues and names	r Pav, rho Pav, HR 7859, HD 195961, SAO 254835, CP -61 6495, FK5: 3647
constellation	Pavo

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

position, motion, parallax:

position (J2000)	RA: 20h 37min 35.3sec	DEC: -61° 31' 48''
position (2000.73)	RA: 20h 37min 39sec	DEC: -61° 31' 39''
position (B1900)	RA: 20h 29min 12.4sec	DEC: -61° 52' 24''
proper motion (J2000)	RA: 0.057 arcsec/a	DEC: -0.072 arcsec/a
radial velocity	8 km/s
rotational velocity	=<49 km/s (uncertain) (variable)
trigonometric parallax	0.003 arcsec
galactic coordinates	longitude: 334.83°	latitude: -36.18°

magnitude

visual magnitude

4.88 (V on UBV Johnson system)

spectral / color information

spectral class	F5Del Del
B-V-magnitude	0.43
U-B-magnitude	0.19

variability information

variable star identification

Rho Pav

note (category: variability):

Delta Sct amp. 0.03V, 0.11d.

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

position, motion, parallax:

position (J2000)	RA: 20h 37min 35.295sec	DEC: -61° 31' 47.67''	±0.22 arcsec	source: 15
position (2000.73)	RA: 20h 37min 39sec	DEC: -61° 31' 39''	JD: 2451810.88
proper motion (J2000)	RA: 0.008 arcsec/a	DEC: -0.072 arcsec/a		source: 25
radial velocity	8 km/s			source: 25
trigonometric parallax	0.003 arcsec		-	source: 25
galactic coord. (B1950)	longitude: 334.83°	latitude: -36.18°

magnitude:

visual	4.85 (observed)	source: 30
photovisual	5	source: 2

spectral information:

spectral class	F5		source: 96
Morgan-Keenan	F5DeltaDel		source: 25
B-magnitude	5.31 ±0.05	B-V-magnitude	0.43
U-magnitude	5.5 ±0.05	U-B-magnitude	0.19

variability information:

source of data: 30

variability type	10
var. amplitude	0.06
var. period	0.11

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
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: 20h 33min 24.831sec	DEC: -61° 42' 13.15''	±0.024 arcsec
position (2000.73)	RA: 20h 37min 39sec	DEC: -61° 31' 35''	JD: 2451810.88
position (J2000)	RA: 20h 37min 35.269sec	DEC: -61° 31' 47.29''
proper motion B1950 (FK4)	RA: 0.0084 arcsec/a	DEC: -0.065 arcsec/a	±0.006 arcsec/a in RA ±0.005 arcsec/a in DEC
proper motion J2000 (FK5)	RA: 0.0075 arcsec/a	DEC: -0.067 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

visual	5 (accuracy: 2 decimals)
source of visual magnitude data	Taken from Harvard or San Luis photometry.

spectral information:

spectral class	F5
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue	GC, catalogue number: 28668
Durchmusterung	CP-61 6495
Boss General Catalogue	28668
Henry Draper Catalogue	195961

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

position:

position (equinox 1950.0)

RA: 20h 33min 24.8sec

DEC: -61° 42' 13''

variability informations:

variability type	DSCTC	pulsating variable star
magnitute at max. brightness	4.85
magnitute amplitude	0.055
photometric system	visual, photovisual or Johnson's V
period [d]	0.1141

spectral information

spectral class

F0mIII

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 'Cape Photographic Durchmusterung'

miscanellous

ID in the GCVS catalogue	61/9017
constellation	Pavo
notes on existence	The star is equivalent to '0620001 R'.
There are notes in published catalog.

variability type description

variability type

description

DSCTC

Variables of the Delta Scuti type. These are pulsating variables of spectral types A0-F5 III-V displaying light amplitudes from 0.003 to 0.9 mag in V (usually several hundredths of a magnitude) and periods from 0.01 to 0.2 days. The shapes of the light curves, periods, and amplitudes usually vary greatly. Radial as well as nonradial pulsations are observed. The variability of some members of this type appears sporadically and sometimes completely ceases, this being a consequence of strong amplitude modulation with the lower value of the amplitude not exceeding 0.001 mag in some cases. The maximum of the surface layer expansion does not lag behind the maximum light for more than 0.1 periods. DSCT stars are representatives of the galactic disk (flat component) and are phenomenologically close to the SX Phe variables. DSCTC Low amplitude group of Delta Sct variables (light amplitude <0.1 mag in V). The majority of this type's representatives are stars of luminosity class V; objects of this subtype generally are representative of the Delta Sct variables in open clusters.