17 Persei
catalogues and names
| catalogues and names | NSV 00963, 17 Per, HR 843, HD 17709, SAO 55946, BD +34 527, FK5: 2198 |
| constellation | Perseus |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 2h 51min 30.8sec | DEC: +35° 3' 35'' | ||
| position (B1900) | RA: 2h 45min 21sec | DEC: +34° 38' 54'' | ||
| proper motion (J2000) | RA: 0.009 arcsec/a | DEC: -0.061 arcsec/a | ||
| radial velocity | 14 km/s note: variable radial velocity |
|||
| rotational velocity | <17 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.004 arcsec | |||
| galactic coordinates | longitude: 149.07° | latitude: -21.64° | ||
magnitude
| visual magnitude | 4.53 (V on UBV Johnson system) |
spectral / color information
| spectral class | K5+III |
| B-V-magnitude | 1.56 |
| U-B-magnitude | 1.92 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
| note (category: spectra): | Also classified K7III. |
variability information
| variable star identification | 963 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 2h 51min 30.839sec | DEC: +35° 3' 35.4'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: 0.0006 arcsec/a | DEC: -0.057 arcsec/a | source: 25 | |
| radial velocity | 14 km/s | source: 25 | ||
| trigonometric parallax | 0.004 arcsec | - | source: 25 | |
| galactic coord. (B1950) | longitude: 149.08° | latitude: -21.64° | ||
magnitude:
| visual | 4.53 (observed) | source: 25 |
| photovisual | 4.7 | source: 2 |
| photographic | 5.8 | source: 16 |
spectral information:
| spectral class | K5 | source: 96 | |
| Morgan-Keenan | K5.5III | source: 25 | |
| B-magnitude | 6.09 ±0.05 | B-V-magnitude | 1.56 |
| U-magnitude | 8.01 ±0.05 | U-B-magnitude | 1.92 |
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 | |
| 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: 2h 48min 25.535sec | DEC: +34° 51' 19.2'' | ±0.02 arcsec |
| position (J2000) | RA: 2h 51min 30.897sec | DEC: +35° 3' 34.83'' | |
| proper motion B1950 (FK4) | RA: 0.0012 arcsec/a | DEC: -0.062 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0012 arcsec/a | DEC: -0.065 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.7 (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: 3419 |
| Durchmusterung | BD+34 527 |
| Boss General Catalogue | 3419 |
| Henry Draper Catalogue | 17709 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 2h 48min 25.5sec | DEC: +34° 51' 19'' |
variability informations:
| magnitute at max. brightness | 4.54 |
| magnitute amplitude | 0.07 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K7 |
references
| to a study | 300015D (designation: HR 843) |