HR 7012
| catalogues and names |
| The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) |
| SKY2000 - Master Star Catalog |
| Smithsonian Astrophysical Observatory Star Catalog |
catalogues and names
| catalogues and names | HR 7012, HD 172555, SAO 254358, CP -64 3948, FK5: 3489 |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
| position (J2000) | RA: 18h 45min 26.9sec | DEC: -64° 52' 17'' | ||
| position (B1900) | RA: 18h 35min 37.9sec | DEC: -64° 57' 54'' | ||
| proper motion (J2000) | RA: 0.027 arcsec/a | DEC: -0.149 arcsec/a | ||
| radial velocity | 2 km/s | |||
| rotational velocity | 134 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.035 arcsec | |||
| galactic coordinates | longitude: 330.57° | latitude: -23.76° | ||
magnitude
| visual magnitude | 4.79 (V on UBV Johnson system) |
spectral / color information
| spectral class | A5IV-V |
| B-V-magnitude | 0.2 |
| U-B-magnitude | 0.08 |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 18h 45min 26.853sec | DEC: -64° 52' 16.5'' | ±0.22 arcsec | source: 15 |
| proper motion (J2000) | RA: 0.0042 arcsec/a | DEC: -0.149 arcsec/a | source: 25 | |
| radial velocity | 2 km/s | source: 25 | ||
| trigonometric parallax | 0.035 arcsec | ±0.003 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 330.57° | latitude: -23.76° | ||
magnitude:
| visual | 4.79 (observed) | source: 25 |
| photovisual | 4.9 | source: 2 |
| photographic | 5 | source: 2 |
spectral information:
| spectral class | A2 | source: 96 | |
| Morgan-Keenan | A5IV-V | source: 25 | |
| B-magnitude | 4.99 ±0.05 | B-V-magnitude | 0.2 |
| U-magnitude | 5.07 ±0.05 | U-B-magnitude | 0.08 |
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 (B1950) | RA: 18h 40min 32.655sec | DEC: -64° 55' 16.21'' | ±0.019 arcsec |
| position (J2000) | RA: 18h 45min 26.672sec | DEC: -64° 52' 17.1'' | |
| proper motion B1950 (FK4) | RA: 0.0035 arcsec/a | DEC: -0.156 arcsec/a | ±0.004 arcsec/a in RA ±0.003 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0024 arcsec/a | DEC: -0.157 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 4.9 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
| spectral class | A2 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | GC, catalogue number: 25604 |
| Durchmusterung | CP-64 3948 |
| Boss General Catalogue | 25604 |
| Henry Draper Catalogue | 172555 |