g Piscis Austrini
| catalogues and names | g PsA, NSV 14338, 22 PsA, HR 8695, HD 216336, SAO 214153, WDS 22525-3253 |
| constellation | Piscis Austrinus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 22h 52min 31,6sec | DEC: -32° 52' 32'' |
| position (J1900) | RA: 22h 46min 58,1sec | DEC: -33° 24' 21'' |
| proper motion (J2000) | RA: -0,03 arcsec/a | DEC: -0,025 arcsec/a |
| radial velocity | 17 km/s note: suspected variable radial velocity |
|
| rotational velocity | 55 km/s (uncertain) (variable) | |
| trigonometric parallax | 0,043 arcsec | |
| note (category: dynamical parallaxes): | 0.015". |
magnitude
| visual magnitude | 4,46 (V on UBV Johnson system) |
spectral / color information
| spectral class | A0III* |
| B-V-magnitude | -0,04 |
| U-B-magnitude | -0,14 |
| R-I-magnitude | 0,02 |
| note (category: spectra): | Also classified A0V and B9.5IV. |
variability information
| variable star identification | 14338 |
double/multiple star system information
| separation | 4,2 arcsec |
| mag difference (of double or brightest multiple) | 3,6 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | Binary, companion F5V. |
miscellaneous information
| note (category: group membership): | Sirius group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 22h 52min 31,486sec | DEC: -32° 52' 32,48'' | ±0,19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0,0038 arcsec/a | DEC: -0,04 arcsec/a | source: 25 | |
| radial velocity | 17 km/s | source: 25 | ||
| trigonometric parallax | 0,043 | ±0,004 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 13,07° | latitude: -63,72° | ||
| GCI unit vector (J2000) | X: 0,803713 | Y: -0,243709 | Z: -0,542818 | |
magnitude:
| visual | 4,46 (observed) | source: 25 |
| photovisual | 4,1 | source: 16 |
| photographic | 4,5 | source: 2 |
spectral information:
| spectral class | A0 | source: 96 | |
| Morgan-Keenan | A0III* | source: 25 | |
| B-magnitude | 4,42 ±0,05 | B-V-magnitude | -0,04 |
| U-magnitude | 4,28 ±0,05 | U-B-magnitude | -0,14 |
variability information:
| variability type | 9 |
| var. amplitude | 0,05 |
double/multiple star system information:
| separation between brightest and second brightest component | 4,2 arcsec |
| magnitude difference between brightest and second brightest component | 3,4 |
| position angle | 259 ° |
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 | |
| 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 | |
| 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 | |
| 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: 22h 49min 45,065sec | DEC: -33° 8' 28,32'' | ±0,017 arcsec |
| position (J2000) | RA: 22h 52min 31,564sec | DEC: -32° 52' 32,02'' | |
| proper motion J1950 (FK4) | RA: -0,0024 arcsec/a | DEC: -0,021 arcsec/a | ±0,004 arcsec/a in RA ±0,004 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0024 arcsec/a | DEC: -0,025 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4,5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 31895 |
| Durchmusterung | CD-3316270 |
| Boss General Catalogue | 31895 |
| Henry Draper Catalogue | 216336 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 22h 52,5min | DEC: -32° 53' |
| proper motion (J2000) | RA: -0,036 arcsec/a | DEC: -0,025 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 |
| - | 1835 | 48 | 276° | 4,2'' | 4,6 | 8 | A0III | HJ 5367 |
| 1985 | 259° | - |
discoverer information:
| discoverer code | discoverer | reference |
| HJ 5367 | Herschel, J. | - |
notes:
| note | Gamma PsA. Variable? |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 22h 49min 45,1sec | DEC: -33° 8' 28'' |
variability informations:
| magnitute at max. brightness | 4,45 |
| magnitute at min. brightness | 4,5 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | A0 |
references
| to a study | 0807D (designation: 62G PSA) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |