Anser
| catalogues and names | Anser, a Vul, NSV 12069, 6 Vul, HR 7405, HD 183439, SAO 87261, FK5: 1508, WDS 19287+2440A |
| constellation | Vulpecula |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Anser (rarely used). |
position, motion, parallax:
| position (J2000) | RA: 19h 28min 42,3sec | DEC: +24° 39' 54'' |
| position (J1900) | RA: 19h 24min 32,6sec | DEC: +24° 27' 44'' |
| proper motion (J2000) | RA: -0,125 arcsec/a | DEC: -0,106 arcsec/a |
| radial velocity | -86 km/s note: suspected variable radial velocity |
|
| trigonometric parallax | 0,014 arcsec | |
magnitude
| visual magnitude | 4,44 (V on UBV Johnson system) |
spectral / color information
| spectral class | M0III |
| B-V-magnitude | 1,5 |
| U-B-magnitude | 1,81 |
| R-I-magnitude | 0,97 |
variability information
| variable star identification | 12069 |
double/multiple star system information
| separation | 413,7 arcsec |
| mag difference (of double or brightest multiple) | 1,4 |
| note | Worley (1978) update of the IDS |
| note (category: double and multiple data): | Secondary K0. |
miscellaneous information
| note (category: group membership): | Arcturus group. Same space motion as Arcturus, HR 5340. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 19h 28min 42,333sec | DEC: +24° 39' 53,66'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0,0092 arcsec/a | DEC: -0,106 arcsec/a | source: 25 | |
| radial velocity | -86 km/s | source: 25 | ||
| trigonometric parallax | 0,014 | ±0,001 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 59° | latitude: 3,4° | ||
| GCI unit vector (J2000) | X: 0,343021 | Y: -0,841539 | Z: 0,417311 | |
magnitude:
| visual | 4,44 (observed) | source: 25 |
| photovisual | 4,6 | source: 2 |
spectral information:
| spectral class | M0 | source: 96 | |
| Morgan-Keenan | M0.5IIIb | source: 25 | |
| B-magnitude | 5,94 ±0,05 | B-V-magnitude | 1,5 |
| U-magnitude | 7,75 ±0,05 | U-B-magnitude | 1,81 |
double/multiple star system information:
| separation between brightest and second brightest component | 413,7 arcsec |
| magnitude difference between brightest and second brightest component | 1,37 |
| position angle | 28 ° |
| component | magnitude | spectral class | catalogue(s)/name(s) |
| A | 4,44 | M0 | Anser, a Vulpeculae, 6 Vul, HR 7405, HD 183439, SAO 87261 |
| B | 5,81 | K0 | 8 Vul, HR 7406, HD 183491, SAO 87267 |
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 | |
| 15 | FK5, FK5 Extension and FK5 Supplement |
| Fricke, W., H. Schwan and T. Lederle, "Fifth Fundamental Catalogue (FK5), Part I. The Basic Fundamental Stars," Veroff. Astronomisches Recheninstitut, No. 32, Heidelberg, Germany, 1988, and Fricke, W., H. Schwan, and T.E. Corbin, "Fifth Fundamental Catalogue (FK5), Part II. The FK5 Extension," Veröff. Astronomisches Recheninstitut, No. 33, Heidelberg, Germany, 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 (J1950) | RA: 19h 26min 37,41sec | DEC: +24° 33' 44,9'' | ±0,004 arcsec |
| position (J2000) | RA: 19h 28min 42,336sec | DEC: +24° 39' 53,7'' | |
| proper motion J1950 (FK4) | RA: -0,0093 arcsec/a | DEC: -0,103 arcsec/a | ±0,001 arcsec/a in RA ±0,001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0092 arcsec/a | DEC: -0,106 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4,6 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | M0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 1508 |
| Durchmusterung | BD+24 3759 |
| Boss General Catalogue | 26904 |
| Henry Draper Catalogue | 183439 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 19h 28,7min | DEC: +24° 40' |
| proper motion (J2000) | RA: -0,125 arcsec/a | DEC: -0,106 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 |
| - | 1835 | 10 | 28° | 396,2'' | 4,44 | 5,81 | M0III | STF 42 |
| 1924 | - | 413,7'' |
discoverer information:
| discoverer code | discoverer | reference |
| STF 42 | Struve, F.G.W. | - |
notes:
| note | Alpha and 8 Vul. B is BD+24@3761, proper motion 000 +008, spectrum K0III. |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 19h 26min 37,4sec | DEC: +24° 33' 45'' |
variability informations:
| magnitute at max. brightness | 4,39 |
| magnitute at min. brightness | 4,46 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | M1 |
references
| to a study | 300015D (designation: HR 7405) |