Alkes


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


catalogues and names Alkes, a Crt, 7 Crt, HR 4287, HD 95272, SAO 156375, FK5: 1283
constellation Crater

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

note (category: star names): Alkes.

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

position, motion, parallax:

position (J2000) RA: 10h 59min 46,5sec DEC: -18 17' 56''
position (J1900) RA: 10h 54min 54,1sec DEC: -17 45' 58''
proper motion (J2000) RA: -0,46 arcsec/a DEC: 0,13 arcsec/a
radial velocity 47 km/s
note: variable radial velocity
rotational velocity <19 km/s
trigonometric parallax 0,031 arcsec

magnitude

visual magnitude 4,08
(V on UBV Johnson system)

spectral / color information

spectral class K0+III
B-V-magnitude 1,09
U-B-magnitude 1
R-I-magnitude 0,55

miscellaneous information

note (category: group membership): 61 Cyg group.

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

position, motion, parallax:

position (J2000) RA: 10h 59min 46,47sec DEC: -18 17' 55,65'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0323 arcsec/a DEC: 0,13 arcsec/a source: 25
radial velocity 47 km/s source: 25
trigonometric parallax 0,031 0,003 arcsec source: 25
galactic coord. (B1950) longitude: 269,07 latitude: 37,12
GCI unit vector (J2000) X: -0,916839 Y: 0,246633 Z: -0,313972

magnitude:

visual 4,08 (observed) source: 25
photovisual 4,2 source: 2
photographic 5,2 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K0+III source: 25
B-magnitude 5,17 0,05 B-V-magnitude 1,09
U-magnitude 6,17 0,05 U-B-magnitude 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 (J1950) RA: 10h 57min 20,138sec DEC: -18 1' 55,62'' 0,006 arcsec
position (J2000) RA: 10h 59min 46,465sec DEC: -18 17' 55,66''
proper motion J1950 (FK4) RA: -0,0326 arcsec/a DEC: 0,124 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0324 arcsec/a DEC: 0,13 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,2 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 1283
Durchmusterung BD-17 3273
Boss General Catalogue 15106
Henry Draper Catalogue 95272