g2Caeli


The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

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


catalogues and names g2Cae, X Cae, HR 1653, HD 32846, SAO 195534
constellation Caelum

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


position, motion, parallax:

position (J2000) RA: 5h 4min 26,1sec DEC: -35 42' 19''
position (J1900) RA: 5h 0min 51,8sec DEC: -35 50' 39''
proper motion (J2000) RA: 0,028 arcsec/a DEC: 0,038 arcsec/a
radial velocity 6 km/s

magnitude

visual magnitude 6,34
(V on UBV Johnson system)

spectral / color information

spectral class F1III
B-V-magnitude 0,3
U-B-magnitude 0,08

variability information

variable star identification X Cae
note (category: variability): Delta Sct 6.28 - 6.39V, 0.1352227d.

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

position, motion, parallax:

position (J2000) RA: 5h 4min 26,134sec DEC: -35 42' 18,65'' 0,19 arcsec source: 16
proper motion (J2000) RA: 0,0019 arcsec/a DEC: 0,039 arcsec/a source: 25
radial velocity 6 km/s source: 25
galactic coord. (B1950) longitude: 238,87 latitude: -36,26
GCI unit vector (J2000) X: 0,19495 Y: 0,788282 Z: -0,583615

magnitude:

visual 6,28 (observed) source: 30
photovisual 6,5 source: 16

spectral information:

spectral class F0 source: 96
Morgan-Keenan F1III source: 25
B-magnitude 6,64 0,05 B-V-magnitude 0,3
U-magnitude 6,72 0,05 U-B-magnitude 0,08

variability information:

source of data: 30
variability type 10
var. amplitude 0,11
var. period 0,14
var. epoch 2439396
27. September 1966, 12:00:00 UT
next max light 2451616,32
12. March 2000, 19:40:48 UT

sources:

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
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 (J1950) RA: 5h 2min 38,893sec DEC: -35 46' 25,16'' 0,027 arcsec
position (J2000) RA: 5h 4min 26,111sec DEC: -35 42' 18,67''
proper motion J1950 (FK4) RA: 0,0017 arcsec/a DEC: 0,039 arcsec/a 0,006 arcsec/a in RA
0,005 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0023 arcsec/a DEC: 0,038 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 6,3 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class F0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue GC, catalogue number: 6214
Durchmusterung CD-35 2090
Boss General Catalogue 6214
Henry Draper Catalogue 32846

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

position:

position (J1950) RA: 5h 2min 38,9sec DEC: -35 46' 25''

variability informations:

variability type DSCTC pulsating variable star
magnitute at max. brightness 6,28
magnitute at min. brightness 6,39
photometric system visual, photovisual or Johnson's V
epoch for maximum light [JD] 2439395,57
27. September 1966, 01:40:48 UT
period [d] 0,1352227
next maximum light [JD] 2451616,3215125
12. March 2000, 19:42:59 UT
rising time 50 % of period

spectral information

spectral class F1III-F2IV

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 10/7
constellation Caelum
notes on existence The star is equivalent to '0100008 Y'.
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.