p Herculis
catalogues and names
| catalogues and names | p Her, NSV 08431, 67 Her, HR 6418, HD 156283, SAO 65890, BD +36 2844, FK5: 643 |
| constellation | Hercules |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 17h 15min 2.8sec | DEC: +36° 48' 33'' | ||
| position (B1900) | RA: 17h 11min 33.8sec | DEC: +36° 55' 18'' | ||
| proper motion (J2000) | RA: -0.026 arcsec/a | DEC: 0.004 arcsec/a | ||
| radial velocity | -26 km/s note: suspected variable radial velocity |
|||
| rotational velocity | <17 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.025 arcsec | |||
| galactic coordinates | longitude: 60.66° | latitude: 34.34° | ||
magnitude
| visual magnitude | 3.16 (V on UBV Johnson system) |
spectral / color information
| spectral class | K3IIab |
| B-V-magnitude | 1.44 |
| U-B-magnitude | 1.66 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
| note (category: spectra): | Ultraviolet FeII emission. |
variability information
| variable star identification | 8431 |
miscellaneous information
| note (category: group membership): | Red star Pleiades group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 17h 15min 2.839sec | DEC: +36° 48' 33.01'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0.0022 arcsec/a | DEC: 0.004 arcsec/a | source: 25 | |
| radial velocity | -26 km/s | source: 25 | ||
| trigonometric parallax | 0.025 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 60.66° | latitude: 34.34° | ||
magnitude:
| visual | 3.16 (observed) | source: 25 |
| photovisual | 3.4 | source: 2 |
spectral information:
| spectral class | K5 | source: 96 | |
| Morgan-Keenan | K3II | source: 25 | |
| B-magnitude | 4.6 ±0.05 | B-V-magnitude | 1.44 |
| U-magnitude | 6.26 ±0.05 | U-B-magnitude | 1.66 |
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 | |
| 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: 17h 13min 18.212sec | DEC: +36° 51' 51.83'' | ±0.005 arcsec |
| position (J2000) | RA: 17h 15min 2.84sec | DEC: +36° 48' 33.11'' | |
| proper motion B1950 (FK4) | RA: -0.0025 arcsec/a | DEC: 0.003 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0021 arcsec/a | DEC: 0.005 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 3.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | K5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 643 |
| Durchmusterung | BD+36 2844 |
| Boss General Catalogue | 23302 |
| Henry Draper Catalogue | 156283 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 17h 13min 18.2sec | DEC: +36° 51' 52'' |
variability informations:
| magnitute at max. brightness | 3.07 |
| magnitute at min. brightness | 3.16 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K3 |
references
| to a study | 182615D (designation: PI HER) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |