The object was found in the following catalogues:
  1. The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version)

  2. SKY2000 - Master Star Catalog

  3. Smithsonian Astrophysical Observatory Star Catalog

  4. Combined General Catalogue of Variable Stars (suspected variables)

catalogues and names Sharatan, b Ari, NSV 00658, 6 Ari, HR 553, HD 11636, SAO 75012, 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.

object is infrared source (NASA merged infrared catalogue, Schmitz et al., 1978)

position, motion, parallax:

position (J2000) RA: 1h 54min 38,4sec DEC: +20 48' 29''
position (J1900) 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
rotational velocity 79 km/s (uncertain) (variable)
trigonometric parallax 0,074 arcsec


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 0,08

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 0,007 arcsec source: 25
galactic coord. (B1950) longitude: 142,25 latitude: -39,68
GCI unit vector (J2000) X: 0,820248 Y: 0,448329 Z: 0,355238


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


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: 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 J1950 (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


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.


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 (J1950) 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


to a study 181167D (designation: BETA ARI)


There are notes in the published catalog (Kukarkin et al.(1982)).