39 Tauri
catalogues and names
| catalogues and names | NSV 01452, 39 Tau, HR 1262, HD 25680, SAO 76438, BD +21 587, WDS 04053+2201A |
| constellation | Taurus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 4h 5min 20.2sec | DEC: +22° 0' 32'' | ||
| position (B1900) | RA: 3h 59min 24.9sec | DEC: +21° 44' 21'' | ||
| proper motion (J2000) | RA: 0.169 arcsec/a | DEC: -0.136 arcsec/a | ||
| radial velocity | 26 km/s note: suspected variable radial velocity |
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| rotational velocity | 3 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.063 arcsec | |||
| galactic coordinates | longitude: 171.44° | latitude: -22.1° | ||
magnitude
| visual magnitude | 5.9 (V on UBV Johnson system) |
spectral / color information
| spectral class | G5V |
| B-V-magnitude | 0.62 |
| U-B-magnitude | 0.12 |
variability information
| variable star identification | 1452 |
double/multiple star system information
| number of components of multiple star system | 3 |
| separation | 170.1 arcsec |
| mag difference (of double or brightest multiple) | 2.7 |
| component ID | AB |
| note | Worley (1978) update of the IDS |
miscellaneous information
| note (category: group membership): | Hyades? |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 4h 5min 20.252sec | DEC: +22° 0' 31.75'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: 0.0123 arcsec/a | DEC: -0.139 arcsec/a | source: 25 | |
| radial velocity | 26 km/s | source: 25 | ||
| trigonometric parallax | 0.063 arcsec | ±0.006 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 171.45° | latitude: -22.1° | ||
magnitude:
| visual | 5.9 (observed) | source: 25 |
| photovisual | 6 | source: 2 |
| photographic | 6.7 | source: 16 |
spectral information:
| spectral class | G5 | source: 96 | |
| Morgan-Keenan | G5V | source: 25 | |
| B-magnitude | 6.52 ±0.05 | B-V-magnitude | 0.62 |
| U-magnitude | 6.64 ±0.05 | U-B-magnitude | 0.12 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.2 arcsec |
| position angle | 203 ° |
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 | |
| 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 | |
| 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 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 4h 2min 22.353sec | DEC: +21° 52' 31.92'' | ±0.015 arcsec |
| position (J2000) | RA: 4h 5min 20.235sec | DEC: +22° 0' 31.54'' | |
| proper motion B1950 (FK4) | RA: 0.0122 arcsec/a | DEC: -0.133 arcsec/a | ±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0121 arcsec/a | DEC: -0.136 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 | G5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 4913 |
| Durchmusterung | BD+21 587 |
| Boss General Catalogue | 4913 |
| Henry Draper Catalogue | 25680 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 4h 5.3min | DEC: +22° 1' |
| proper motion (J2000) | RA: 0.169 arcsec/a | DEC: -0.133 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 |
| Aa | 1988 | 1 | 203° | 0.2'' | 5.9 | - | G5V | CHR 158 |
| Aa-B | 1853 | 5 | 2° | 166.4'' | 5.9 | 8.8 | - | STT |
| 1922 | - | 170.5'' | ||||||
| Aa-C | 1924 | 1 | 22° | 144.1'' | 5.9 | 11.5 | - | STT |
| BC | 1887 | 4 | 128° | 61.6'' | 8.9 | 11.5 | - | STT |
| 1922 | - | 60.6'' |
discoverer information:
| discoverer code | discoverer | reference |
| CHR 158 | - | - |
| STT | Struve, O. |
notes:
| note | 39 Tau. Variable? B is optical. Proper motion of B +003 -020. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 4h 2min 22.4sec | DEC: +21° 52' 32'' |
variability informations:
| variability type | - |
| magnitute at max. brightness | 5.88 |
| magnitute at min. brightness | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | G5 |
references
| to a study | 731153D (designation: 39 TAU) |