Adhafera
catalogues and names
| catalogues and names | Adhafera, z Leo, NSV 04804, 36 Leo, HR 4031, HD 89025, SAO 81265, BD +24 2209, FK5: 384, WDS 10167+2325A |
| constellation | Leo |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Adhafera; Aldhafara; Aldhafera. |
position, motion, parallax:
| position (J2000) | RA: 10h 16min 41.4sec | DEC: +23° 25' 2'' | ||
| position (B1900) | RA: 10h 11min 7.7sec | DEC: +23° 54' 57'' | ||
| proper motion (J2000) | RA: 0.018 arcsec/a | DEC: -0.007 arcsec/a | ||
| radial velocity | -16 km/s note: spectroscopic binaries |
|||
| rotational velocity | 84 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.017 arcsec | |||
| galactic coordinates | longitude: 210.23° | latitude: 54.95° | ||
magnitude
| visual magnitude | 3.44 (V on UBV Johnson system) |
spectral / color information
| spectral class | F0III |
| B-V-magnitude | 0.31 |
| U-B-magnitude | 0.2 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 4804 |
double/multiple star system information
| separation | 325.9 arcsec |
| mag difference (of double or brightest multiple) | 2.3 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | Primary unresolved by speckle interferometry 1982.17. |
miscellaneous information
| note (category: group membership): | Sirius group; UMa stream. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 10h 16min 41.409sec | DEC: +23° 25' 2.26'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: 0.0013 arcsec/a | DEC: -0.007 arcsec/a | source: 25 | |
| radial velocity | -16 km/s | source: 25 | ||
| trigonometric parallax | 0.017 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 210.24° | latitude: 54.95° | ||
magnitude:
| visual | 3.44 (observed) | source: 25 |
| photovisual | 3.7 | source: 2 |
spectral information:
| spectral class | F0 | source: 96 | |
| Morgan-Keenan | F0III | source: 25 | |
| B-magnitude | 3.75 ±0.05 | B-V-magnitude | 0.31 |
| U-magnitude | 3.95 ±0.05 | U-B-magnitude | 0.2 |
double/multiple star system information:
| separation between brightest and second brightest component | 325.9 arcsec |
| magnitude difference between brightest and second brightest component | 2.5 |
| position angle | 340 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 3.44 | F0 | Adhafera, z Leonis, 36 Leo, HR 4031, HD 89025, SAO 81265 |
| B | 5.97 | G0 | 35 Leo, HR 4030, HD 89010, SAO 81260 |
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 (B1950) | RA: 10h 13min 54.758sec | DEC: +23° 40' 1.94'' | ±0.004 arcsec |
| position (J2000) | RA: 10h 16min 41.406sec | DEC: +23° 25' 2.19'' | |
| proper motion B1950 (FK4) | RA: 0.0013 arcsec/a | DEC: -0.012 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0013 arcsec/a | DEC: -0.008 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 3.6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | F0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 384 |
| Durchmusterung | BD+24 2209 |
| Boss General Catalogue | 14107 |
| Henry Draper Catalogue | 89025 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 10h 16.7min | DEC: +23° 25' |
| proper motion (J2000) | RA: 0.018 arcsec/a | DEC: -0.007 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 |
| - | 1836 | 12 | 343° | 314.4'' | 3.44 | 5.9 | F0III | STF 18 |
| 1925 | 340° | 325.9'' |
discoverer information:
| discoverer code | discoverer | reference |
| STF 18 | Struve, F.G.W. | - |
notes:
| note | Zeta Leo. A spectroscopic binary. B is BD+29@2207. Proper motion of B -209 +039. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 10h 13min 54.8sec | DEC: +23° 40' 2'' |
variability informations:
| magnitute at max. brightness | 3.42 |
| magnitute at min. brightness | 3.46 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | F0 |
references
| to a study | 731800D (designation: HR 4031) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |