NSV 12088
catalogues and names
| catalogues and names | NSV 12088, HR 7412, HD 183589, SAO 124698, BD +2 3904, WDS 19302+0254A |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 19h 30min 10.5sec | DEC: +2° 54' 15'' | ||
| position (B1900) | RA: 19h 25min 9.1sec | DEC: +2° 41' 47'' | ||
| proper motion (J2000) | RA: -0.005 arcsec/a | DEC: 0 arcsec/a | ||
| radial velocity | -13 km/s note: suspected variable radial velocity |
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| galactic coordinates | longitude: 39.98° | latitude: -7.26° | ||
magnitude
| visual magnitude | 6.09 (V on UBV Johnson system) |
spectral / color information
| spectral class | K5Ib |
| B-V-magnitude | 1.82 |
| U-B-magnitude | 2.03 |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 12088 |
double/multiple star system information
| number of components of multiple star system | 4 |
| separation | 34.1 arcsec |
| mag difference (of double or brightest multiple) | 4.9 |
| component ID | AB |
| note (category: double and multiple data): | B, optical. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 19h 30min 10.55sec | DEC: +2° 54' 13.96'' | ±0.43 arcsec | source: 16 |
| proper motion (J2000) | RA: 0.0007 arcsec/a | DEC: -0.008 arcsec/a | source: 25 | |
| radial velocity | -13 km/s | source: 25 | ||
| galactic coord. (B1950) | longitude: 39.98° | latitude: -7.26° | ||
magnitude:
| visual | 6.09 (observed) | source: 25 |
| photovisual | 6.4 | source: 2 |
| photographic | 7.7 | source: 16 |
spectral information:
| spectral class | K5 | source: 96 | |
| Morgan-Keenan | K5Ib | source: 25 | |
| B-magnitude | 7.91 ±0.05 | B-V-magnitude | 1.82 |
| U-magnitude | 9.94 ±0.05 | U-B-magnitude | 2.03 |
double/multiple star system information:
| separation between brightest and second brightest component | 34.1 arcsec |
| magnitude difference between brightest and second brightest component | 4.5 |
| position angle | 5 ° |
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: 19h 27min 39.769sec | DEC: +2° 47' 55.79'' | ±0.037 arcsec |
| position (J2000) | RA: 19h 30min 10.456sec | DEC: +2° 54' 14.96'' | |
| proper motion B1950 (FK4) | RA: -0.0005 arcsec/a | DEC: 0.002 arcsec/a | ±0.007 arcsec/a in RA ±0.005 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0.0003 arcsec/a | DEC: 0 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 6.4 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | K5 |
| 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: 26925 |
| Durchmusterung | BD+02 3904 |
| Boss General Catalogue | 26925 |
| Henry Draper Catalogue | 183589 |
data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)
position and proper motion:
| position (J2000) | RA: 19h 30.2min | DEC: +2° 54' |
| proper motion (J2000) | RA: 0.007 arcsec/a | DEC: -0.003 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 | 1829 | 13 | 5° | 34.9'' | 6.09 | 10.6 | M1III | STF2532 |
| 1931 | - | 34.1'' | ||||||
| AC | 1923 | 2 | 197° | 119.8'' | 6.4 | - | - | STF2532 |
| BC | 1911 | 1 | 135° | 34'' | 10.6 | 13.9 | - | STF2532 |
discoverer information:
| discoverer code | discoverer | reference |
| STF2532 | Struve, F.G.W. | - |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 19h 27min 39.8sec | DEC: +2° 47' 55'' |
variability informations:
| variability type | - |
| magnitute at max. brightness | 6.08 |
| magnitute at min. brightness | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K5 |
references
| to a study | 0807D (designation: 53G AQL) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |