Hassaleh
catalogues and names
| catalogues and names | Hassaleh, i Aur, NSV 01778, 3 Aur, HR 1577, HD 31398, SAO 57522, BD +32 855, FK5: 181 | 
| other names | Hassaleh in Becvar | 
| constellation | Auriga | 
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
| note (category: star names): | Hassaleh in Becvar. | 
position, motion, parallax:
| position (J2000) | RA: 4h 56min 59.6sec | DEC: +33° 9' 58'' | ||
| position (B1900) | RA: 4h 50min 28.7sec | DEC: +33° 0' 28'' | ||
| proper motion (J2000) | RA: 0.003 arcsec/a | DEC: -0.018 arcsec/a | ||
| radial velocity | 18 km/s note: variable radial velocity  | 
|||
| rotational velocity | <17 km/s (uncertain) (variable) | |||
| trigonometric parallax | 0.021 arcsec | |||
| galactic coordinates | longitude: 170.59° | latitude: -6.16° | ||
magnitude
| visual magnitude | 2.69 (V on UBV Johnson system)  | 
spectral / color information
| spectral class | K3II | 
| B-V-magnitude | 1.53 | 
| U-B-magnitude | 1.78 | 
| R-I-magnitude | |
| IR-note | object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978) | 
variability information
| variable star identification | 1778 | 
| note (category: variability): | 4.0 - 4.15p. | 
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
| position (J2000) | RA: 4h 56min 59.617sec | DEC: +33° 9' 57.93'' | ±0.06 arcsec | source: 15 | 
| proper motion (J2000) | RA: 0.0003 arcsec/a | DEC: -0.018 arcsec/a | source: 25 | |
| radial velocity | 18 km/s | source: 25 | ||
| trigonometric parallax | 0.021 arcsec | ±0.002 arcsec | source: 25 | |
| galactic coord. (B1950) | longitude: 170.59° | latitude: -6.16° | ||
magnitude:
| visual | 2.69 (observed) | source: 25 | 
| photovisual | 2.9 | source: 2 | 
spectral information:
| spectral class | K2 | source: 96 | |
| Morgan-Keenan | K3II | source: 25 | |
| B-magnitude | 4.22 ±0.05 | B-V-magnitude | 1.53 | 
| U-magnitude | 6 ±0.05 | U-B-magnitude | 1.78 | 
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: 4h 53min 43.982sec | DEC: +33° 5' 19.94'' | ±0.004 arcsec | 
| position (J2000) | RA: 4h 56min 59.613sec | DEC: +33° 9' 57.9'' | |
| proper motion B1950 (FK4) | RA: 0.0003 arcsec/a | DEC: -0.018 arcsec/a | ±0.001 arcsec/a in RA  ±0.001 arcsec/a in DEC  | 
| proper motion J2000 (FK5) | RA: 0.0002 arcsec/a | DEC: -0.018 arcsec/a | |
| source of proper motion data | Determined by source catalog | ||
magnitude:
| visual | 2.9 (accuracy: 2 decimals) | 
| source of visual magnitude data | Taken from the "Henry Draper Catalogue". | 
spectral information:
| spectral class | K2 | 
| source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. | 
catalogues
| source catalogue | FK4, catalogue number: 181 | 
| Durchmusterung | BD+32 855 | 
| Boss General Catalogue | 6029 | 
| Henry Draper Catalogue | 31398 | 
data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)
position:
| position (equinox 1950.0) | RA: 4h 53min 44sec | DEC: +33° 5' 20'' | 
variability informations:
| magnitute at max. brightness | 2.63 | 
| magnitute at min. brightness | 2.78 | 
| photometric system | visual, photovisual or Johnson's V | 
spectral information
| spectral class | K3 | 
references
| to a study | 140106D (designation: IOTA AUR) | 
miscanellous
| There are notes in the published catalog (Kukarkin et al.(1982)). |