i2Librae
| catalogues and names | i2Lib, 25 Lib, HR 5656, HD 134967, SAO 159105 |
| constellation | Libra |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 15h 13min 19,2sec | DEC: -19° 38' 51'' |
| position (J1900) | RA: 15h 7min 37,3sec | DEC: -19° 16' 16'' |
| proper motion (J2000) | RA: -0,051 arcsec/a | DEC: -0,037 arcsec/a |
| radial velocity | -4 km/s note: spectroscopic binaries |
|
magnitude
| visual magnitude | 6,08 (V on UBV Johnson system) |
spectral / color information
| spectral class | A3Vn |
| B-V-magnitude | 0,12 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 15h 13min 19,186sec | DEC: -19° 38' 51,6'' | ±0,35 arcsec | source: 34 |
| proper motion (J2000) | RA: -0,0034 arcsec/a | DEC: -0,042 arcsec/a | source: 25 | |
| radial velocity | -4 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 343,04° | latitude: 31,96° | ||
| GCI unit vector (J2000) | X: -0,626132 | Y: -0,703495 | Z: -0,336235 | |
magnitude:
| visual | 6,08 (observed) | source: 25 |
| photovisual | 6,6 | source: 16 |
spectral information:
| spectral class | A2 | source: 96 | |
| Morgan-Keenan | A3Vn | source: 25 | |
| B-magnitude | 6,2 ±0,05 | B-V-magnitude | 0,12 |
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 | |
| 34 | IRS Catalog |
| Corbin, T.E., 1991, U.S. Naval Observatory, International Reference Stars Catalog | |
| 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: 15h 10min 27,954sec | DEC: -19° 27' 38,01'' | ±0,019 arcsec |
| position (J2000) | RA: 15h 13min 19,179sec | DEC: -19° 38' 50,92'' | |
| proper motion J1950 (FK4) | RA: -0,0037 arcsec/a | DEC: -0,041 arcsec/a | ±0,003 arcsec/a in RA ±0,003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0036 arcsec/a | DEC: -0,037 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A2 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 20456 |
| Durchmusterung | BD-19 4055 |
| Boss General Catalogue | 20456 |
| Henry Draper Catalogue | 134967 |