Sadalmeilk


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. The Washington Visual Double Star Catalog, 1996.0


catalogues and names Sadalmeilk, a Aqr, 34 Aqr, HR 8414, HD 209750, SAO 145862, FK5: 827, WDS 22058-0019
other names Sadalmelek, Sadlamulk, El Melik, Saad el Melik
constellation Aquarius

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

note (category: star names): SADALMELIK; Sadalmelek; Sadlamulk; El Melik; Saad el Melik.

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

position, motion, parallax:

position (J2000) RA: 22h 5min 47sec DEC: -0 19' 11''
position (J1900) RA: 22h 0min 38,9sec DEC: -0 48' 21''
proper motion (J2000) RA: 0,02 arcsec/a DEC: -0,01 arcsec/a
radial velocity 8 km/s
note: suspected variable radial velocity
rotational velocity <17 km/s (uncertain) (variable)
trigonometric parallax 0,012 arcsec

magnitude

visual magnitude 2,96
(V on UBV Johnson system)

spectral / color information

spectral class G2Ib
B-V-magnitude 0,98
U-B-magnitude 0,74
R-I-magnitude 0,49

variability information

note (category: variability): He 10830 possibly variable.

double/multiple star system information

separation 113 arcsec
mag difference (of double or brightest multiple) 9
note Worley (1978) update of the IDS

miscellaneous information

note (category: group membership): See HR 8232.

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

position, motion, parallax:

position (J2000) RA: 22h 5min 47,038sec DEC: -0 19' 11,47'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0013 arcsec/a DEC: -0,01 arcsec/a source: 25
radial velocity 8 km/s source: 25
trigonometric parallax 0,012 0,001 arcsec source: 25
galactic coord. (B1950) longitude: 59,94 latitude: -42,07
GCI unit vector (J2000) X: 0,878353 Y: -0,477979 Z: -0,005582

magnitude:

visual 2,96 (observed) source: 25
photovisual 3,2 source: 2

spectral information:

spectral class G0 source: 96
Morgan-Keenan G2Ib source: 25
B-magnitude 3,94 0,05 B-V-magnitude 0,98
U-magnitude 4,68 0,05 U-B-magnitude 0,74

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 113 arcsec
magnitude difference between brightest and second brightest component 9,2
position angle 41

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
19 WDS Catalog
Worley, C.E., and G.G. Douglass, Washington Catalog of Visual Double Stars 1996.0, United States Naval Observatory, 1996
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: 22h 3min 12,946sec DEC: -0 33' 48,59'' 0,003 arcsec
position (J2000) RA: 22h 5min 47,033sec DEC: -0 19' 11,38''
proper motion J1950 (FK4) RA: 0,0011 arcsec/a DEC: -0,004 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0013 arcsec/a DEC: -0,009 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,2 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class G0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 827
Durchmusterung BD-01 4246
Boss General Catalogue 30896
Henry Draper Catalogue 209750

data from The Washington Visual Double Star Catalog, 1996.0 (Worley+, 1996)

position and proper motion:

position (J2000) RA: 22h 5,8min DEC: -0 19'
proper motion (J2000) RA: 0,02 arcsec/a DEC: -0,01 arcsec/a

double/multiple star system information:

component year number of measures position angle angular separation magnitude of 1st component magnitude of 2nd component spectral class(es) discoverer code
- 1879 2 42 114,6'' 2,96 12,2 G2Ib BUP 232
1907 41 113''

discoverer information:

discoverer code discoverer reference
BUP 232 - -

notes:

note Alpha Aqr.