Ras Elased Australis


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 Ras Elased Australis, e Leo, NSV 04613, 17 Leo, HR 3873, HD 84441, SAO 81004, FK5: 367
other names Al Ras al Asad al Janubi, Algenubi, Al Ashfar
constellation Leo

data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)

note (category: star names): Ras Elased Australis; Al Ras al Asad al Janubiyyah; Algenubi; with HR 3905, Al Ashfar.

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

position, motion, parallax:

position (J2000) RA: 9h 45min 51,1sec DEC: +23 46' 27''
position (J1900) RA: 9h 40min 10,5sec DEC: +24 14' 5''
proper motion (J2000) RA: -0,046 arcsec/a DEC: -0,011 arcsec/a
radial velocity 4 km/s
note: suspected variable radial velocity
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax 0,01 arcsec

magnitude

visual magnitude 2,98
(V on UBV Johnson system)

spectral / color information

spectral class G1II
B-V-magnitude 0,8
U-B-magnitude 0,47
R-I-magnitude 0,44

variability information

variable star identification 4613
note (category: variability): Cep amp. 0.1V, period a few days.

data from SKY2000 - Master Star Catalog (Myers+ 1997)

position, motion, parallax:

position (J2000) RA: 9h 45min 51,071sec DEC: +23 46' 27,21'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0034 arcsec/a DEC: -0,011 arcsec/a source: 25
radial velocity 4 km/s source: 25
trigonometric parallax 0,01 0,001 arcsec source: 25
galactic coord. (B1950) longitude: 206,83 latitude: 48,21
GCI unit vector (J2000) X: -0,762795 Y: 0,505596 Z: 0,403134

magnitude:

visual 2,98 (observed) source: 25
photovisual 3,1 source: 2

spectral information:

spectral class G0 source: 96
Morgan-Keenan G1II source: 25
B-magnitude 3,78 0,05 B-V-magnitude 0,8
U-magnitude 4,25 0,05 U-B-magnitude 0,47

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: 9h 43min 0,996sec DEC: +24 0' 19,62'' 0,003 arcsec
position (J2000) RA: 9h 45min 51,073sec DEC: +23 46' 27,21''
proper motion J1950 (FK4) RA: -0,0033 arcsec/a DEC: -0,015 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0034 arcsec/a DEC: -0,011 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 G0p
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 367
Durchmusterung BD+24 2129
Boss General Catalogue 13443
Henry Draper Catalogue 84441

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 9h 43min 1sec DEC: +24 0' 20''

variability informations:

magnitute at max. brightness 2,95
magnitute at min. brightness 3,04
photometric system visual, photovisual or Johnson's V

spectral information

spectral class G1

references

to a study 711610D (designation: HD 84441)

miscanellous

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