Sharatan
catalogues and names
| catalogues and names | Sharatan, b Ari, NSV 00658, 6 Ari, HR 553, HD 11636, SAO 75012, BD +20 306, FK5: 66 |
| other names | Sheratan, Al Sharatain |
| constellation | Aries |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Sharatan; Sheratan; Al Sharatain. |
position, motion, parallax:
| position (J2000) | RA: 1h 54min 38.4sec | DEC: +20° 48' 29'' | ||
| position (B1900) | RA: 1h 49min 6.8sec | DEC: +20° 19' 9'' | ||
| proper motion (J2000) | RA: 0.096 arcsec/a | DEC: -0.111 arcsec/a | ||
| radial velocity | -2 km/s note: spectroscopic binaries note: orbital data avaible |
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| rotational velocity | 79 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.074 arcsec | |||
| galactic coordinates | longitude: 142.24° | latitude: -39.68° | ||
magnitude
| visual magnitude | 2.64 (V on UBV Johnson system) |
spectral / color information
| spectral class | A5V |
| B-V-magnitude | 0.13 |
| U-B-magnitude | 0.1 |
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) |
variability information
| variable star identification | 658 |
| note (category: variability): | Delta Sct? |
double/multiple star system information
| note (category: spectroscopic binaries): | 106.9973d, K 37.1k/s, V0 -4.0k/s, asini 23.8. One of the most eccentric orbits known: e 0.892. Binary unresolved by speckle interferometry 1981.69. SB2 in infrared: near-IR reticon spectra at 8800 Ang show double lines and indicate that the secondary is late F- or G-type main-sequence star. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 1h 54min 38.401sec | DEC: +20° 48' 28.82'' | ±0.06 arcsec | source: 15 |
| proper motion (J2000) | RA: 0.0068 arcsec/a | DEC: -0.111 arcsec/a | source: 25 | |
| radial velocity | -2 km/s | source: 25 | ||
| trigonometric parallax | 0.074 arcsec | ±0.007 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 142.25° | latitude: -39.68° | ||
magnitude:
| visual | 2.64 (observed) | source: 25 |
| photovisual | 2.7 | source: 2 |
spectral information:
| spectral class | A5 | source: 96 | |
| Morgan-Keenan | A5V | source: 25 | |
| B-magnitude | 2.77 ±0.05 | B-V-magnitude | 0.13 |
| U-magnitude | 2.87 ±0.05 | U-B-magnitude | 0.1 |
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: 1h 51min 52.34sec | DEC: +20° 33' 52.09'' | ±0.004 arcsec |
| position (J2000) | RA: 1h 54min 38.402sec | DEC: +20° 48' 28.73'' | |
| proper motion B1950 (FK4) | RA: 0.0069 arcsec/a | DEC: -0.108 arcsec/a | ±0.001 arcsec/a in RA ±0.001 arcsec/a in DEC |
| proper motion J2000 (FK5) | RA: 0.0069 arcsec/a | DEC: -0.112 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 2.7 (accuracy: 2 decimals) |
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". |
spectral information:
| spectral class | A5 |
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
| source catalogue | FK4, catalogue number: 66 |
| Durchmusterung | BD+20 306 |
| Boss General Catalogue | 2309 |
| Henry Draper Catalogue | 11636 |
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 1h 51min 52.3sec | DEC: +20° 33' 52'' |
variability informations:
| magnitute at max. brightness | 2.56 |
| magnitute at min. brightness | 2.7 |
| photometric system | visual, photovisual or Johnson's V |
spectral information
| spectral class | AM |
references
| to a study | 181167D (designation: BETA ARI) |
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |