p2Hydri
catalogues and names | p2Hyi, HR 678, HD 14287, SAO 248521 |
constellation | Hydrus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
position (J2000) | RA: 2h 15min 28,5sec | DEC: -67° 44' 47'' |
position (J1900) | RA: 2h 13min 23,4sec | DEC: -68° 12' 35'' |
proper motion (J2000) | RA: 0,035 arcsec/a | DEC: -0,016 arcsec/a |
radial velocity | 17 km/s |
magnitude
visual magnitude | 5,69 (V on UBV Johnson system) |
spectral / color information
spectral class | K2III |
B-V-magnitude | 1,3 |
U-B-magnitude | 1,48 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 2h 15min 28,639sec | DEC: -67° 44' 47,02'' | ±0,19 arcsec | source: 16 |
proper motion (J2000) | RA: 0,0084 arcsec/a | DEC: -0,018 arcsec/a | source: 25 | |
radial velocity | 17 km/s | source: 25 | ||
galactic coord. (B1950) | longitude: 291,35° | latitude: -47,45° | ||
GCI unit vector (J2000) | X: 0,314444 | Y: 0,211054 | Z: -0,925517 |
magnitude:
visual | 5,69 (observed) | source: 25 |
photovisual | 5,8 | source: 16 |
spectral information:
spectral class | K5 | source: 96 | |
Morgan-Keenan | K2III | source: 25 | |
B-magnitude | 6,99 ±0,05 | B-V-magnitude | 1,3 |
U-magnitude | 8,47 ±0,05 | U-B-magnitude | 1,48 |
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 14min 25,727sec | DEC: -67° 58' 40,23'' | ±0,03 arcsec |
position (J2000) | RA: 2h 15min 28,517sec | DEC: -67° 44' 47,22'' | |
proper motion J1950 (FK4) | RA: 0,007 arcsec/a | DEC: -0,013 arcsec/a | ±0,007 arcsec/a in RA ±0,006 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: 0,0061 arcsec/a | DEC: -0,016 arcsec/a | |
source of proper motion data | Determined by source catalog |
magnitude:
visual | 5,5 (accuracy: 2 decimals) |
source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
spectral class | K5 |
source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
source catalogue | GC, catalogue number: 2745 |
Durchmusterung | CP-68 128 |
Boss General Catalogue | 2745 |
Henry Draper Catalogue | 14287 |