g Leporis
| catalogues and names | g Lep, 13 Lep, HR 1983, HD 38393, SAO 170759, FK5: 217, WDS 05445-2227A |
| constellation | Lepus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 5h 44min 27,8sec | DEC: -22° 26' 54'' |
| position (J1900) | RA: 5h 40min 17,6sec | DEC: -22° 28' 51'' |
| proper motion (J2000) | RA: -0,293 arcsec/a | DEC: -0,37 arcsec/a |
| radial velocity | -10 km/s | |
| rotational velocity | 11 km/s (uncertain) (variable) | |
| trigonometric parallax | 0,128 arcsec | |
magnitude
| visual magnitude | 3,6 (V on UBV Johnson system) |
spectral / color information
| spectral class | F6V |
| B-V-magnitude | 0,47 |
| U-B-magnitude | 0 |
| R-I-magnitude | 0,26 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 96,5 arcsec |
| mag difference (of double or brightest multiple) | 2,5 |
| component ID | AB |
| note (category: double and multiple data): | CPM with HR 1982. |
miscellaneous information
| note (category: group membership): | Sirius group; UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 5h 44min 27,784sec | DEC: -22° 26' 54,31'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0,0211 arcsec/a | DEC: -0,37 arcsec/a | source: 25 | |
| radial velocity | -10 km/s | source: 25 | ||
| trigonometric parallax | 0,128 | ±0,013 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 226,79° | latitude: -24,27° | ||
| GCI unit vector (J2000) | X: 0,062608 | Y: 0,922101 | Z: -0,381852 | |
magnitude:
| visual | 3,6 (observed) | source: 25 |
| photovisual | 3,8 | source: 2 |
| photographic | 4,3 | source: 2 |
spectral information:
| spectral class | F8 | source: 96 | |
| Morgan-Keenan | F6V | source: 25 | |
| B-magnitude | 4,07 ±0,05 | B-V-magnitude | 0,47 |
| U-magnitude | 4,07 ±0,05 | U-B-magnitude | 0 |
double/multiple star system information:
| separation between brightest and second brightest component | 96,8 arcsec |
| magnitude difference between brightest and second brightest component | 2,55 |
| position angle | 350 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 3,6 | F8 | g Leporis, 13 Lep, HR 1983, HD 38393, SAO 170759 |
| B | 6,15 | G5 | HR 1982, HD 38392, SAO 170757 |
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 | |
| 15 | FK5, FK5 Extension and FK5 Supplement |
| Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 1991 | |
| 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: 5h 42min 22,653sec | DEC: -22° 27' 48,3'' | ±0,007 arcsec |
| position (J2000) | RA: 5h 44min 27,801sec | DEC: -22° 26' 54,36'' | |
| proper motion J1950 (FK4) | RA: -0,0212 arcsec/a | DEC: -0,373 arcsec/a | ±0,001 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,021 arcsec/a | DEC: -0,371 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 3,8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | F8 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 217 |
| Durchmusterung | BD-22 1211 |
| Boss General Catalogue | 7197 |
| Henry Draper Catalogue | 38393 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 5h 44,5min | DEC: -22° 27' |
| proper motion (J2000) | RA: -0,293 arcsec/a | DEC: -0,37 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 |
| AB | 1825 | 18 | 350° | 94'' | 3,6 | 6,15 | F6V K2V | H 40 |
| 1980 | - | 96,8'' | ||||||
| BC | 1832 | 1 | 345° | 45'' | 6,15 | 11 | - | H 50 |
discoverer information:
| discoverer code | discoverer | reference |
| H 40 | Herschel, W. | - |
| H 50 | Herschel, W. | - |
notes:
| note | AB: H VI 40. Gamma Lep. Proper motion of B -304 -358. BC: H V 50. C is CPD-22@883. |