p1Hydri
| catalogues and names | p1Hyi, NSV 00767, HR 667, HD 14141, SAO 248518 |
| constellation | Hydrus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 2h 14min 14,7sec | DEC: -67° 50' 30'' |
| position (J1900) | RA: 2h 12min 9sec | DEC: -68° 18' 30'' |
| proper motion (J2000) | RA: 0,037 arcsec/a | DEC: 0,037 arcsec/a |
| radial velocity | 26 km/s | |
| trigonometric parallax | 0,013 arcsec | |
magnitude
| visual magnitude | 5,55 (V on UBV Johnson system) |
spectral / color information
| spectral class | M1III |
| B-V-magnitude | 1,55 |
| U-B-magnitude | 1,85 |
variability information
| variable star identification | 767 |
| note (category: variability): | 5.52 - 5.58V. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 2h 14min 14,604sec | DEC: -67° 50' 29,02'' | ±0,19 arcsec | source: 16 |
| proper motion (J2000) | RA: 0,0063 arcsec/a | DEC: 0,048 arcsec/a | source: 25 | |
| radial velocity | 26 km/s | source: 25 | ||
| trigonometric parallax | 0,013 | ±0,001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 291,57° | latitude: -47,42° | ||
| GCI unit vector (J2000) | X: 0,314297 | Y: 0,208509 | Z: -0,926143 | |
magnitude:
| visual | 5,55 (observed) | source: 25 |
| photovisual | 5,5 | source: 16 |
spectral information:
| spectral class | M0 | source: 96 | |
| Morgan-Keenan | M1-III | source: 25 | |
| B-magnitude | 7,1 ±0,05 | B-V-magnitude | 1,55 |
| U-magnitude | 8,95 ±0,05 | U-B-magnitude | 1,85 |
variability information:
| variability type | 9 |
| var. amplitude | 0,05 |
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 | |
| 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: 2h 13min 11,635sec | DEC: -68° 4' 28,8'' | ±0,028 arcsec |
| position (J2000) | RA: 2h 14min 14,745sec | DEC: -67° 50' 30,15'' | |
| proper motion J1950 (FK4) | RA: 0,0074 arcsec/a | DEC: 0,04 arcsec/a | ±0,007 arcsec/a in RA ±0,005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,0065 arcsec/a | DEC: 0,037 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5,4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | M0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 2715 |
| Durchmusterung | CP-68 126 |
| Boss General Catalogue | 2715 |
| Henry Draper Catalogue | 14141 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 2h 13min 11,6sec | DEC: -68° 4' 28'' |
variability informations:
| magnitute at max. brightness | 5,52 |
| magnitute at min. brightness | 5,58 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | M1 |
references
| to a study | 600936D (designation: HR 667) |