V0669 Herculis
catalogues and names
| catalogues and names | V0669 Her, 104 Her, HR 6815, HD 167006, SAO 66737, BD +31 3199, FK5: 3448 |
| constellation | Hercules |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 18h 11min 54.2sec | DEC: +31° 24' 19'' | ||
| position (B1900) | RA: 18h 8min 8.3sec | DEC: +31° 22' 49'' | ||
| proper motion (J2000) | RA: -0.013 arcsec/a | DEC: 0.03 arcsec/a | ||
| radial velocity | 0 km/s note: variable radial velocity |
|||
| trigonometric parallax | 0.007 arcsec | |||
| galactic coordinates | longitude: 58.2° | latitude: 21.59° | ||
magnitude
| visual magnitude | 4.97 (V on UBV Johnson system) |
spectral / color information
| spectral class | M3III |
| B-V-magnitude | 1.65 |
| U-B-magnitude | 1.94 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | V669 Her |
| note (category: variability): | Amp. 0.14B. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 18h 11min 54.108sec | DEC: +31° 24' 19.07'' | ±0.43 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0017 arcsec/a | DEC: 0.022 arcsec/a | source: 25 | |
| radial velocity | 0 km/s | source: 25 | ||
| trigonometric parallax | 0.007 arcsec | ±0.001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 58.21° | latitude: 21.59° | ||
magnitude:
| visual | 4.97 (observed) | source: 25 |
| photovisual | 5 | source: 2 |
| photographic | 6.4 | source: 16 |
spectral information:
| spectral class | M0 | source: 96 | |
| Morgan-Keenan | M3III | source: 25 | |
| B-magnitude | 6.62 ±0.05 | B-V-magnitude | 1.65 |
| U-magnitude | 8.56 ±0.05 | U-B-magnitude | 1.94 |
variability information:
| var. amplitude | 0.14 |
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 | |
| 30 | GCVS, 4th edition |
| Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88 | |
| 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: 18h 10min 1.172sec | DEC: +31° 23' 29.74'' | ±0.017 arcsec |
| position (J2000) | RA: 18h 11min 54.191sec | DEC: +31° 24' 18.87'' | |
| proper motion B1950 (FK4) | RA: -0.0009 arcsec/a | DEC: 0.023 arcsec/a | ±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0007 arcsec/a | DEC: 0.023 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | M0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 24831 |
| Durchmusterung | BD+31 3199 |
| Boss General Catalogue | 24831 |
| Henry Draper Catalogue | 167006 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 18h 10min 1.2sec | DEC: +31° 23' 30'' |
variability informations:
| magnitute at max. brightness | 6.62 |
| magnitute amplitude | 0.14 |
| photometric system |
spectral information
| spectral class | M3III |
references
| to a study | Vol. I GCVS (see Kholopov et al. 1985-1988) |
| to a chart/photograph | no chart is avaible, but the star is contained in the 'Bonner Durchmusterung' |
miscanellous
| ID in the GCVS catalogue | 40/669 |
| constellation | Hercules |
| notes on existence | The star is equivalent to '0400670 V0670'. |