g2Caeli
| 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:
| 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. |