j Andromedae
catalogues and names
| catalogues and names | j And, NSV 15249, 42 And, HR 335, HD 6811, SAO 36972, BD +46 275, WDS 01095+4715A |
| constellation | Andromeda |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 1h 9min 30.2sec | DEC: +47° 14' 31'' | ||
| position (B1900) | RA: 1h 3min 41.7sec | DEC: +46° 42' 31'' | ||
| proper motion (J2000) | RA: 0.01 arcsec/a | DEC: -0.009 arcsec/a | ||
| radial velocity | 0 km/s note: variable radial velocity |
|||
| rotational velocity | 71 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.003 arcsec | |||
| galactic coordinates | longitude: 126.11° | latitude: -15.52° | ||
| note (category: dynamical parallaxes): | 0.003". |
magnitude
| visual magnitude | 4.25 (V on UBV Johnson system) |
spectral / color information
| spectral class | B7Ve |
| B-V-magnitude | -0.07 |
| U-B-magnitude | -0.34 |
| R-I-magnitude |
| note (category: spectra): | Also classified B7III, B9IIIe. |
variability information
| variable star identification | Var? |
double/multiple star system information
| separation | 0.4 arcsec |
| mag difference (of double or brightest multiple) | 1.2 |
| note (category: double and multiple data): | 4.6 B6IV, 5.5 B9V, 371.6y, a = 0.447". Combined mag., colors. Masses 16 and 10 solar. Resolved by speckle interferometry 1983.93, sep. 0.64". |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 1h 9min 30.179sec | DEC: +47° 14' 30.75'' | ±0.35 arcsec | source: 17 |
| proper motion (J2000) | RA: 0.0013 arcsec/a | DEC: -0.005 arcsec/a | source: 25 | |
| radial velocity | 0 km/s | source: 25 | ||
| trigonometric parallax | 0.003 arcsec | - | source: 25 | |
| galactic coord. (B1950) | longitude: 126.12° | latitude: -15.52° | ||
magnitude:
| visual | 4.25 (observed) | source: 25 |
| photovisual | 4.3 | source: 2 |
| photographic | 4.2 | source: 16 |
spectral information:
| spectral class | B8 | source: 96 | |
| Morgan-Keenan | B7Ve | source: 25 | |
| B-magnitude | 4.18 ±0.05 | B-V-magnitude | -0.07 |
| U-magnitude | 3.84 ±0.05 | U-B-magnitude | -0.34 |
double/multiple star system information:
| separation between brightest and second brightest component | 0.5 arcsec |
| magnitude difference between brightest and second brightest component | 1.6 |
| position angle | 131 ° |
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: 1h 6min 35.326sec | DEC: +46° 58' 32.8'' | ±0.022 arcsec |
| position (J2000) | RA: 1h 9min 30.174sec | DEC: +47° 14' 30.5'' | |
| proper motion B1950 (FK4) | RA: 0.0009 arcsec/a | DEC: -0.004 arcsec/a | ±0.004 arcsec/a in RA ±0.002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.001 arcsec/a | DEC: -0.009 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.3 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | B8 |
| 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: 1394 |
| Durchmusterung | BD+46 275 |
| Boss General Catalogue | 1394 |
| Henry Draper Catalogue | 6811 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 1h 9.5min | DEC: +47° 15' |
| proper motion (J2000) | RA: 0.013 arcsec/a | DEC: -0.005 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 |
| - | 1851 | often | 273° | 0.5'' | 4.5 | 6.1 | B7Ve | STT 515 |
| 1993 | 131° | - | ||||||
| AC | 1884 | 1 | 224° | 10'' | - | - | - | SBK |
| AD | 1884 | 1 | 64° | 27.7'' | - | - | - | SBK |
discoverer information:
| discoverer code | discoverer | reference |
| STT 515 | Struve, O. | - |
| SBK | Seabroke, G.M. |
notes:
| note | Phi And. P = 372yr., a = 0.45", motion retrograde. |
data from 4th Catalog of Orbits of Visual Binaries (Worley+, 1983)
position:
| position (B1900) | RA: 1h 3.7min | DEC: +46° 43' |
magnitudes, spectral classes, orbital elements:
| author: | P. Baize |
| date of observation: | 1953 |
| magnitude of component A: | 4.6 |
| magnitude of component B: | 4.6 |
| spectral class component B: | B7Ve |
| spectral class component B: | B7Ve |
| period [y]: | 371.6 |
| semi-major axis [arcsec]: | 0.447 |
| inclination [deg]: | 139.8 |
| node [deg]: | 148.2 |
| eccentricity: | 0.21 |
| time of periastron passage: | 1889.9 |
| dates of ephemeris: | 1958-1978 |
| grade: | reliable |
| reference: | J. Observateurs 41, 165; 1958. |
| other name(s) | STT 515, Phi And |