56 Andromedae
catalogues and names
| catalogues and names | 56 And, HR 557, HD 11749, SAO 55107, BD +36 355, WDS 01562+3715A |
| constellation | Andromeda |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 1h 56min 9,3sec | DEC: +37° 15' 6'' | ||
| position (2001,21) | RA: 1h 56min 13sec | DEC: +37° 15' 27'' | ||
| position (B1900) | RA: 1h 50min 12,7sec | DEC: +36° 45' 40'' | ||
| proper motion (J2000) | RA: 0,182 arcsec/a | DEC: 0,006 arcsec/a | ||
| radial velocity | 59 km/s | |||
| rotational velocity | =<25 km/s (uncertain) (variable) | |||
| galactic coordinates | longitude: 136,96° | latitude: -23,85° | ||
magnitude
| visual magnitude | 5,67 (V on UBV Johnson system) |
spectral / color information
| spectral class | K0III |
| B-V-magnitude | 1,06 |
| U-B-magnitude | 0,91 |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 190,4 arcsec |
| mag difference (of double or brightest multiple) | 0,2 |
| component ID | AB |
| note (category: double and multiple data): | ADS 1534AP, CPM, 11.9v at 18". |
miscellaneous information
| note (category: group membership): | Region of NGC 752. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 1h 56min 9,358sec | DEC: +37° 15' 6,55'' | ±0,2 arcsec | source: 52 |
| position (2001,21) | RA: 1h 56min 13sec | DEC: +37° 15' 28'' | JD: 2451987,35 | |
| proper motion (J2000) | RA: 0,0155 arcsec/a | DEC: 0,012 arcsec/a | source: 25 | |
| radial velocity | 59 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 136,97° | latitude: -23,85° | ||
magnitude:
| visual | 5,67 (observed) | source: 25 |
| photovisual | 5,8 | source: 2 |
| photographic | 6,8 | source: 16 |
spectral information:
| spectral class | K0 | source: 96 | |
| Morgan-Keenan | K0III | source: 25 | |
| B-magnitude | 6,73 ±0,05 | B-V-magnitude | 1,06 |
| U-magnitude | 7,64 ±0,05 | U-B-magnitude | 0,91 |
double/multiple star system information:
| separation between brightest and second brightest component | 18,4 arcsec |
| magnitude difference between brightest and second brightest component | 6,25 |
| position angle | 79 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 5,67 | K0 | 56 And, HR 557, HD 11749, SAO 55107 |
| B | 5,89 | K2 | HR 556, HD 11727, SAO 55102 |
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: 1h 53min 10,56sec | DEC: +37° 0' 26,51'' | ±0,015 arcsec |
| position (2001,21) | RA: 1h 56min 13sec | DEC: +37° 15' 27'' | JD: 2451987,35 |
| position (J2000) | RA: 1h 56min 9,339sec | DEC: +37° 15' 6,03'' | |
| proper motion B1950 (FK4) | RA: 0,0151 arcsec/a | DEC: 0,01 arcsec/a | ±0,003 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0,0152 arcsec/a | DEC: 0,006 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 5,8 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K0 |
| 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: 2324 |
| Durchmusterung | BD+36 355 |
| Boss General Catalogue | 2324 |
| Henry Draper Catalogue | 11749 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 1h 56,2min | DEC: +37° 15' |
| proper motion (J2000) | RA: 0,186 arcsec/a | DEC: 0,017 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 |
| Aa | 1903 | 6 | 79° | 18,4'' | 5,68 | 11,93 | K0III | BU 1368 |
| AB | 1836 | 12 | 302° | 177,5'' | 5,68 | 6,1 | K0III gM0 | STF 4 |
| 1984 | 297° | 199,7'' | ||||||
| Bb | 1880 | 3 | 258° | 203,8'' | 6,2 | 9,4 | gM0 | BU 1368 |
discoverer information:
| discoverer code | discoverer | reference |
| BU 1368 | Burnham, S.W. | - |
| STF 4 | Struve, F.G.W. | - |
notes:
| note | Bb: b is BD+36@349. 56 And. B is BD+36@354. |