69 Herculis
catalogues and names
| catalogues and names | NSV 08489, 69 Her, HR 6436, HD 156729, SAO 65921, BD +37 2864 |
| constellation | Hercules |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 17h 17min 40.3sec | DEC: +37° 17' 30'' | ||
| position (B1900) | RA: 17h 14min 13.3sec | DEC: +37° 23' 46'' | ||
| proper motion (J2000) | RA: -0.034 arcsec/a | DEC: 0.063 arcsec/a | ||
| radial velocity | -10 km/s note: spectroscopic binaries |
|||
| rotational velocity | 149 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.018 arcsec | |||
| galactic coordinates | longitude: 61.35° | latitude: 33.91° | ||
magnitude
| visual magnitude | 4.65 (V on UBV Johnson system) |
spectral / color information
| spectral class | A2V |
| B-V-magnitude | 0.05 |
| U-B-magnitude | -0.03 |
| R-I-magnitude |
variability information
| variable star identification | 8489 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 17h 17min 40.275sec | DEC: +37° 17' 29.16'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: -0.0032 arcsec/a | DEC: 0.058 arcsec/a | source: 25 | |
| radial velocity | -10 km/s | source: 25 | ||
| trigonometric parallax | 0.018 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 61.35° | latitude: 33.91° | ||
magnitude:
| visual | 4.65 (observed) | source: 25 |
| photovisual | 4.8 | source: 2 |
| photographic | 4.9 | source: 16 |
spectral information:
| spectral class | A2 | source: 96 | |
| Morgan-Keenan | A2V | source: 25 | |
| B-magnitude | 4.7 ±0.05 | B-V-magnitude | 0.05 |
| U-magnitude | 4.67 ±0.05 | U-B-magnitude | -0.03 |
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 | |
| 17 | ACRS |
| Corbin, T.E., and S.E. Urban, Astrographic Catalog Reference Stars, United States Naval Observatory, 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 15min 56.691sec | DEC: +37° 20' 34.06'' | ±0.012 arcsec |
| position (J2000) | RA: 17h 17min 40.308sec | DEC: +37° 17' 29.57'' | |
| proper motion B1950 (FK4) | RA: -0.0032 arcsec/a | DEC: 0.062 arcsec/a | ±0.002 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0029 arcsec/a | DEC: 0.064 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A2 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 23374 |
| Durchmusterung | BD+37 2864 |
| Boss General Catalogue | 23374 |
| Henry Draper Catalogue | 156729 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 17h 15min 56.7sec | DEC: +37° 20' 34'' |
variability informations:
| magnitute at max. brightness | 4.6 |
| magnitute at min. brightness | 4.66 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | A2 |
references
| to a study | 290477D (designation: ZI 1307) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |