HR 1691
catalogues and names
| catalogues and names | HR 1691, HD 33646, SAO 112509, BD +0 975, WDS 05118+0102 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 5h 11min 45.3sec | DEC: +1° 2' 13'' | ||
| position (B1900) | RA: 5h 6min 35.8sec | DEC: +0° 54' 53'' | ||
| proper motion (J2000) | RA: -0.012 arcsec/a | DEC: -0.015 arcsec/a | ||
| radial velocity | -19 km/s | |||
| rotational velocity | 23 km/s (uncertain) (variable) | |||
| dynamical parallax | 0.002 arcsec | |||
| galactic coordinates | longitude: 200° | latitude: -21.51° | ||
magnitude
| visual magnitude | 5.89 (V on UBV Johnson system) |
spectral / color information
| spectral class | G5III |
| B-V-magnitude | 0.66 |
| U-B-magnitude | 0.29 |
| note (category: spectra): | Also classified A + G2:III. |
double/multiple star system information
| separation | 1.6 arcsec |
| mag difference (of double or brightest multiple) | 1.4 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 5h 11min 45.344sec | DEC: +1° 2' 12.33'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0 arcsec/a | DEC: -0.02 arcsec/a | source: 25 | |
| radial velocity | -19 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 200° | latitude: -21.51° | ||
magnitude:
| visual | 5.89 (observed) | source: 25 |
| photovisual | 6.1 | source: 2 |
| photographic | 6.7 | source: 16 |
spectral information:
| spectral class | F5 | source: 96 | |
| Morgan-Keenan | G5III | source: 25 | |
| B-magnitude | 6.55 ±0.05 | B-V-magnitude | 0.66 |
| U-magnitude | 6.84 ±0.05 | U-B-magnitude | 0.29 |
double/multiple star system information:
| separation between brightest and second brightest component | 1.6 arcsec |
| magnitude difference between brightest and second brightest component | 1.5 |
| position angle | 181 ° |
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 | |
| 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 | |
| 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: 5h 9min 10.42sec | DEC: +0° 58' 38.54'' | ±0.041 arcsec |
| position (J2000) | RA: 5h 11min 45.269sec | DEC: +1° 2' 12.74'' | |
| proper motion B1950 (FK4) | RA: -0.0011 arcsec/a | DEC: -0.014 arcsec/a | ±0.008 arcsec/a in RA ±0.006 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0008 arcsec/a | DEC: -0.015 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.3 (accuracy: 1 decimal) |
| source of visual magnitude data | Based on Durchmusterung magnitudes and visual estimates |
spectral information:
| spectral class | F5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
remarks for duplicity and variability
| Double star in Aitken's Double Star Catalogue (Aitken 1932) |
catalogues
| source catalogue | GC, catalogue number: 6361 |
| Durchmusterung | BD+00 975 |
| Boss General Catalogue | 6361 |
| Henry Draper Catalogue | 33646 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 5h 11.8min | DEC: +1° 2' |
| proper motion (J2000) | RA: 0 arcsec/a | DEC: -0.02 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 |
| - | 1830 | 37 | 184° | 1.7'' | 6.1 | 7.6 | A+G2:III | STF 652 |
| 1992 | 181° | 1.6'' |
discoverer information:
| discoverer code | discoverer | reference |
| STF 652 | Struve, F.G.W. | - |