HR 244
catalogues and names
| catalogues and names | HR 244, HD 5015, SAO 11444, BD +60 124, WDS 00531+6107A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 0h 53min 4.1sec | DEC: +61° 7' 27'' | ||
| position (B1900) | RA: 0h 47min 5.8sec | DEC: +60° 34' 33'' | ||
| proper motion (J2000) | RA: -0.071 arcsec/a | DEC: 0.172 arcsec/a | ||
| radial velocity | 21 km/s note: spectroscopic binaries, single lined spectra note: orbital data avaible |
|||
| rotational velocity | 6 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.066 arcsec | |||
| galactic coordinates | longitude: 123.13° | latitude: -1.75° | ||
magnitude
| visual magnitude | 4.82 (V on UBV Johnson system) |
spectral / color information
| spectral class | F8V |
| B-V-magnitude | 0.53 |
| U-B-magnitude | 0.12 |
| R-I-magnitude |
| note (category: spectra): | Ultraviolet deficiency. |
double/multiple star system information
| number of components of multiple star system | 5 |
| separation | 129.7 arcsec |
| mag difference (of double or brightest multiple) | 5.5 |
| component ID | AB |
| note (category: spectroscopic binaries): | ADS 721A, 127.951d, K 1.6k/s, V0 +22.5k/s, asini 2.35. Orbit questioned by Morbey and Griffin (1987, ApJ, 317, 343); proposed period rejected with certainty. Unresolved by speckle interferometry. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 0h 53min 4.2sec | DEC: +61° 7' 26.47'' | ±0.2 arcsec | source: 52 |
| proper motion (J2000) | RA: -0.0087 arcsec/a | DEC: 0.174 arcsec/a | source: 25 | |
| radial velocity | 21 km/s | source: 25 | ||
| trigonometric parallax | 0.066 arcsec | ±0.007 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 123.14° | latitude: -1.75° | ||
magnitude:
| visual | 4.82 (observed) | source: 25 |
| photovisual | 4.9 | source: 2 |
| photographic | 5.4 | source: 16 |
spectral information:
| spectral class | F8 | source: 96 | |
| Morgan-Keenan | F8V | source: 25 | |
| B-magnitude | 5.35 ±0.05 | B-V-magnitude | 0.53 |
| U-magnitude | 5.47 ±0.05 | U-B-magnitude | 0.12 |
double/multiple star system information:
| separation between brightest and second brightest component | 129.9 arcsec |
| magnitude difference between brightest and second brightest component | 4.7 |
| position angle | 171 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 4.82 | F8 | HR 244, HD 5015, SAO 11444 |
| B | 10.44 | F5 |
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 | |
| 52 | PPMN-HP subset |
| PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H) | |
| 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: 0h 50min 3.999sec | DEC: +60° 51' 1.45'' | ±0.018 arcsec |
| position (J2000) | RA: 0h 53min 4.148sec | DEC: +61° 7' 26.73'' | |
| proper motion B1950 (FK4) | RA: -0.0098 arcsec/a | DEC: 0.178 arcsec/a | ±0.003 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0098 arcsec/a | DEC: 0.172 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.9 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | F8 |
| 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: 1047 |
| Durchmusterung | BD+60 124 |
| Boss General Catalogue | 1047 |
| Henry Draper Catalogue | 5015 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 0h 53.1min | DEC: +61° 7' |
| proper motion (J2000) | RA: -0.067 arcsec/a | DEC: 0.16 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 |
| AB | 1878 | 16 | 172° | 121.1'' | 4.82 | 9.5 | F7V | BU 497 |
| 1924 | 171° | 129.9'' | ||||||
| AD | 1922 | 2 | 143° | 93.2'' | 4.9 | - | - | BU 497 |
| 1959 | 144° | 0.1'' | ||||||
| AE | 1922 | 2 | 39° | 130.3'' | 4.9 | - | - | BU 497 |
| 1959 | 42° | 127.4'' | ||||||
| BC | 1877 | 6 | 151° | 0.9'' | 9.6 | 12.3 | - | BU 497 |
| 1946 | 162° | - |
discoverer information:
| discoverer code | discoverer | reference |
| BU 497 | Burnham, S.W. | - |
notes:
| note | A is a spectroscopic binary. Otherwise, the system is optical. |