HR 2154
catalogues and names
| catalogues and names | HR 2154, HD 41692, SAO 132841, BD -4 1362, FK5: 2467, WDS 06066-0412 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 6h 6min 38.7sec | DEC: -4° 11' 38'' | ||
| position (B1900) | RA: 6h 1min 41.2sec | DEC: -4° 11' 1'' | ||
| proper motion (J2000) | RA: -0.007 arcsec/a | DEC: -0.004 arcsec/a | ||
| radial velocity | 20 km/s | |||
| rotational velocity | 20 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 211.57° | latitude: -11.87° | ||
magnitude
| visual magnitude | 5.38 (V on UBV Johnson system) |
spectral / color information
| spectral class | B5IV |
| B-V-magnitude | -0.13 |
| U-B-magnitude | -0.54 |
double/multiple star system information
| separation | 28.5 arcsec |
| mag difference (of double or brightest multiple) | 6.2 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 6h 6min 38.745sec | DEC: -4° 11' 38'' | ±0.19 arcsec | source: 16 |
| proper motion (J2000) | RA: -0.0001 arcsec/a | DEC: -0.007 arcsec/a | source: 25 | |
| radial velocity | 20 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 211.58° | latitude: -11.87° | ||
magnitude:
| visual | 5.38 (observed) | source: 25 |
| photovisual | 5.4 | source: 16 |
| photographic | 5.2 | source: 2 |
spectral information:
| spectral class | B3 | source: 96 | |
| Morgan-Keenan | B5IV | source: 25 | |
| B-magnitude | 5.25 ±0.05 | B-V-magnitude | -0.13 |
| U-magnitude | 4.71 ±0.05 | U-B-magnitude | -0.54 |
double/multiple star system information:
| separation between brightest and second brightest component | 28.9 arcsec |
| magnitude difference between brightest and second brightest component | 6.2 |
| position angle | 144 ° |
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 | |
| 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: 6h 4min 9.904sec | DEC: -4° 11' 14.01'' | ±0.028 arcsec |
| position (J2000) | RA: 6h 6min 38.724sec | DEC: -4° 11' 37.73'' | |
| proper motion B1950 (FK4) | RA: -0.0009 arcsec/a | DEC: -0.003 arcsec/a | ±0.007 arcsec/a in RA ±0.005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0005 arcsec/a | DEC: -0.002 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B3 |
| 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: 7750 |
| Durchmusterung | BD-04 1362 |
| Boss General Catalogue | 7750 |
| Henry Draper Catalogue | 41692 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 6h 6.6min | DEC: -4° 12' |
| proper motion (J2000) | RA: -0.011 arcsec/a | DEC: -0.007 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 |
| - | 1910 | 4 | 144° | 28.9'' | 5.38 | 11.6 | B5IV | J 187 |
discoverer information:
| discoverer code | discoverer | reference |
| J 187 | Jonckheere, R. | - |