catalogues and names

SKY2000 - Master Star Catalog

Smithsonian Astrophysical Observatory Star Catalog

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

catalogues and names

catalogues and names

V0381 Cen, HD 120400, SAO 241219, CP -56 5960

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

position, motion, parallax:

position (J2000)	RA: 13h 50min 44.234sec	DEC: -57° 34' 50.04''	±0.18 arcsec	source: 16
position (2000.72)	RA: 13h 50min 47sec	DEC: -57° 35' 3''	JD: 2451806.31
proper motion (J2000)	RA: -0.0015 arcsec/a	DEC: -0.006 arcsec/a		source: 16
galactic coord. (B1950)	longitude: 310.84°	latitude: 4.38°

magnitude:

visual	7.32 (observed)	source: 30
photovisual	7.7	source: 16

spectral information:

spectral class	G5		source: 96
Morgan-Keenan	F8Ib/II		source: 10
B-magnitude	8.32 ±0.145	B-V-magnitude	0.77
U-magnitude	8.74 ±0.02	U-B-magnitude	0.42

variability information:

source of data: 30

variability type	113
var. amplitude	0.69
var. period	5.08
var. epoch	2436202 29. December 1957, 12:00:00 UT
next max light	2451807.76 20. September 2000, 06:14:24 UT

sources:

10	Michigan Catalog of 2-Dimensional Spectral Types for the HD Stars, Volumes I-III
Houk, N., and A.P. Cowley, Michigan Catalogue of 2-Dimensional Spectral Types for the HD Stars, Vol. 1., (Zones -89 to -53 Degrees), Ann Arbor: The University of Michigan, 1975, and Houk, N., Michigan Catalogue of 2-Dimensional Spectral Types for the HD Stars, Vol. 2., (Zones -52 to -40 Degrees), Ann Arbor: The University of Michigan, 1978, and Houk, N., Michigan Catalogue of 2-Dimensional Spectral Types for the HD Stars, Vol. 3., (Zones -40 to -26 Degrees), Ann Arbor: The University of Michigan, 1982
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
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: 13h 47min 22.494sec	DEC: -57° 19' 58.45''	±0.077 arcsec
position (2000.72)	RA: 13h 50min 47sec	DEC: -57° 35' 1''	JD: 2451806.31
position (J2000)	RA: 13h 50min 44sec	DEC: -57° 34' 49.11''
proper motion B1950 (FK4)	RA: -0.0039 arcsec/a	DEC: 0.006 arcsec/a	±0.018 arcsec/a in RA ±0.015 arcsec/a in DEC
proper motion J2000 (FK5)	RA: -0.0045 arcsec/a	DEC: 0.01 arcsec/a
source of proper motion data	Determined by source catalog

magnitude:

photographic	7.8 (accuracy: 1 decimal)
source of photographic magnitude data	Source cited in source catalog introduction.

spectral information:

spectral class	G5p
source of spectral data	Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Variable star in photographic magnitude in source catalog

catalogues

source catalogue	GC, catalogue number: 18684
Durchmusterung	CP-56 5960
Boss General Catalogue	18684
Henry Draper Catalogue	120400

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

position:

position (equinox 1950.0)

RA: 13h 47min 22.5sec

DEC: -57° 19' 58''

variability informations:

variability type	CEP	pulsating variable star
magnitute at max. brightness	7.32
magnitute at min. brightness	8.01
photometric system	visual, photovisual or Johnson's V
epoch for maximum light [JD]	2436201.953 29. December 1957, 10:52:19 UT
period [d]	5.07878
next maximum light [JD]	2451809.04394 21. September 2000, 13:03:16 UT
rising time	28 % of period

spectral information

spectral class

F6-G7(F8Ib/II)

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	19/381
constellation	Centaurus
notes on existence	The star is equivalent to '0190382 V0382'.

variability type description

variability type

description

CEP

Cepheids. Radially pulsating, high luminosity (classes Ib-II) variables with periods in the range of 1-135 days and amplitudes from several hundredths to 2 mag in V (in the B band, the amplitudes are greater). Spectral type at maximum light is F; at minimum, the types are G-K. The longer the period of light variation,the later is the spectral type. The maximum of the surface-layer expansion velocity almost coinciding with maximum light.