Wasat


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 Wasat, d Gem, 55 Gem, HR 2777, HD 56986, SAO 79294, FK5: 279, WDS 07201+2159
other names Wesat
constellation Gemini

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

note (category: star names): Wasat; Wesat.

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

position, motion, parallax:

position (J2000) RA: 7h 20min 7,4sec DEC: +21 58' 56''
position (J1900) RA: 7h 14min 9sec DEC: +22 10' 0''
proper motion (J2000) RA: -0,026 arcsec/a DEC: -0,012 arcsec/a
radial velocity 4 km/s
note: spectroscopic binaries
note: orbital data avaible
rotational velocity 111 km/s (uncertain) (variable)
trigonometric parallax 0,061 arcsec
note (category: dynamical parallaxes): 0.039".

magnitude

visual magnitude 3,53
(V on UBV Johnson system)

spectral / color information

spectral class F2IV
B-V-magnitude 0,34
U-B-magnitude 0,04
R-I-magnitude 0,19
note (category: spectra): Variously classified A9III, F0IV, F2IV.

double/multiple star system information

number of components of multiple star system 3
separation 0,2 arcsec
mag difference (of double or brightest multiple) 2
component ID O
note (category: double and multiple data): AB 3.55 F0IV, 8.18 K3V, 1200y, a = 6.975". Component A is SB, 3.7, 5.7v, sep. 0.2".
note (category: spectroscopic binaries): ADS 5983A, 2238.6d, K 27.1k/s, V0 +4.1k/s, asini 781. SB character has, however, been questioned by occultation data. Unresolved by speckle interferometry 1978.96 and 1983.93.

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

position, motion, parallax:

position (J2000) RA: 7h 20min 7,367sec DEC: +21 58' 56,29'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,0019 arcsec/a DEC: -0,012 arcsec/a source: 25
radial velocity 4 km/s source: 25
trigonometric parallax 0,061 0,006 arcsec source: 25
galactic coord. (B1950) longitude: 195,99 latitude: 15,89
GCI unit vector (J2000) X: -0,317622 Y: 0,871206 Z: 0,37432

magnitude:

visual 3,53 (observed) source: 25
photovisual 3,5 source: 2

spectral information:

spectral class F0 source: 96
Morgan-Keenan F2IV source: 25
B-magnitude 3,87 0,05 B-V-magnitude 0,34
U-magnitude 3,91 0,05 U-B-magnitude 0,04

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 5,8 arcsec
magnitude difference between brightest and second brightest component 5
position angle 220

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: 7h 17min 8,265sec DEC: +22 4' 34,08'' 0,003 arcsec
position (J2000) RA: 7h 20min 7,366sec DEC: +21 58' 56,39''
proper motion J1950 (FK4) RA: -0,0018 arcsec/a DEC: -0,014 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0019 arcsec/a DEC: -0,011 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,5 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class F0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 279
Durchmusterung BD+22 1645
Boss General Catalogue 9755
Henry Draper Catalogue 56986

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

position and proper motion:

position (J2000) RA: 7h 20,1min DEC: +21 59'
proper motion (J2000) RA: -0,026 arcsec/a DEC: -0,012 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
- 1822 often 198 7,1'' 3,5 8,5 A9III STF1066
1990 220 5,8''

discoverer information:

discoverer code discoverer reference
STF1066 Struve, F.G.W. -

notes:

note Delta Gem. A premature orbit has been computed. A is an occultation double, and a long-period spectroscopic binary.