Nash
| catalogues and names | Nash, g2Sgr, NSV 10173, 10 Sgr, HR 6746, HD 165135, SAO 209696, FK5: 679 |
| other names | Alnasl, Alwazl, Zujj al Nushshabah, Nushaba |
| constellation | Sagittarius |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Nash; Alnasl; Alwazl; Zujj al Nushshabah; Nushaba. Gamma1 or gamma2 Sgr; see HR 6742. |
position, motion, parallax:
| position (J2000) | RA: 18h 5min 48,5sec | DEC: -30° 25' 27'' |
| position (J1900) | RA: 17h 59min 23sec | DEC: -30° 25' 31'' |
| proper motion (J2000) | RA: -0,053 arcsec/a | DEC: -0,185 arcsec/a |
| radial velocity | 22 km/s note: spectroscopic binaries |
|
| trigonometric parallax | 0,025 arcsec | |
magnitude
| visual magnitude | 2,99 (V on UBV Johnson system) |
spectral / color information
| spectral class | K0III |
| B-V-magnitude | 1 |
| U-B-magnitude | 0,77 |
| R-I-magnitude | 0,51 |
variability information
| variable star identification | 10173 |
miscellaneous information
| note (category: group membership): | Wolf 630 group. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 18h 5min 48,491sec | DEC: -30° 25' 26,69'' | ±0,06 arcsec | source: 15 |
| proper motion (J2000) | RA: -0,0041 arcsec/a | DEC: -0,185 arcsec/a | source: 25 | |
| radial velocity | 22 km/s | source: 25 | ||
| trigonometric parallax | 0,025 | ±0,002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 0,93° | latitude: -4,54° | ||
| GCI unit vector (J2000) | X: 0,021851 | Y: -0,862024 | Z: -0,506396 | |
magnitude:
| visual | 2,99 (observed) | source: 25 |
| photovisual | 3,1 | source: 2 |
| photographic | 4,1 | source: 2 |
spectral information:
| spectral class | K0 | source: 96 | |
| Morgan-Keenan | K0+III | source: 25 | |
| B-magnitude | 3,99 ±0,05 | B-V-magnitude | 1 |
| U-magnitude | 4,76 ±0,05 | U-B-magnitude | 0,77 |
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 | |
| 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: 18h 2min 35,678sec | DEC: -30° 25' 35,8'' | ±0,006 arcsec |
| position (J2000) | RA: 18h 5min 48,488sec | DEC: -30° 25' 26,66'' | |
| proper motion J1950 (FK4) | RA: -0,0041 arcsec/a | DEC: -0,185 arcsec/a | ±0,001 arcsec/a in RA ±0,002 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: -0,0041 arcsec/a | DEC: -0,185 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 3,1 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | K0 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 679 |
| Durchmusterung | CD-3015215 |
| Boss General Catalogue | 24632 |
| Henry Draper Catalogue | 165135 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (J1950) | RA: 18h 2min 35,7sec | DEC: -30° 25' 36'' |
variability informations:
| variability type | - |
| magnitute at max. brightness | 2,98 |
| magnitute at min. brightness | |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | K0 |
references
| to a study | 0807D (designation: 28G SGR) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |