Kaffaljidhma


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 Kaffaljidhma, g Cet, 86 Cet, HR 804, HD 16970, SAO 110707, WDS 02433+0314
other names Al Kaff al Jidhmah
constellation Cetus

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

note (category: star names): Kaffaljidhma; Al Kaff al Jidhmah.

position, motion, parallax:

position (J2000) RA: 2h 43min 18sec DEC: +3 14' 9''
position (J1900) RA: 2h 38min 7,1sec DEC: +2 48' 52''
proper motion (J2000) RA: -0,142 arcsec/a DEC: -0,152 arcsec/a
radial velocity -5 km/s
note: variable radial velocity
rotational velocity 183 km/s (uncertain) (variable)
trigonometric parallax 0,052 arcsec
note (category: dynamical parallaxes): 0.009".

magnitude

visual magnitude 3,47
(V on UBV Johnson system)

spectral / color information

spectral class A3V
B-V-magnitude 0,09
U-B-magnitude 0,07
R-I-magnitude 0,04

double/multiple star system information

number of components of multiple star system 3
separation 2,8 arcsec
mag difference (of double or brightest multiple) 2,7
component ID AB
note (category: double and multiple data): AB binary, combined mag., colors. CPM with BD+2d418, 10.2v M6 at 840".

miscellaneous information

note (category: group membership): UMa stream.

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

position, motion, parallax:

position (J2000) RA: 2h 43min 18,044sec DEC: +3 14' 8,6'' 0,19 arcsec source: 33
proper motion (J2000) RA: -0,0095 arcsec/a DEC: -0,152 arcsec/a source: 25
radial velocity -5 km/s source: 25
trigonometric parallax 0,052 0,005 arcsec source: 25
galactic coord. (B1950) longitude: 168,93 latitude: -49,38
GCI unit vector (J2000) X: 0,755501 Y: 0,652711 Z: 0,056444

magnitude:

visual 3,47 (observed) source: 25
photovisual 3,6 source: 2
photographic 3,6 source: 2

spectral information:

spectral class A2 source: 96
Morgan-Keenan A3V source: 25
B-magnitude 3,56 0,05 B-V-magnitude 0,09
U-magnitude 3,63 0,05 U-B-magnitude 0,07

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 2,9 arcsec
magnitude difference between brightest and second brightest component 3,8
position angle 297

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
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
33 Hipparcos Main Input Catalogue Version 2
Turon, C., et al., The Hipparcos Input Catalogue, Version 2, CDS Bull. No. 43, p.5, 1993
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: 2h 40min 42,397sec DEC: +3 1' 34,05'' 0,007 arcsec
position (J2000) RA: 2h 43min 18,048sec DEC: +3 14' 8,55''
proper motion J1950 (FK4) RA: -0,0097 arcsec/a DEC: -0,148 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0095 arcsec/a DEC: -0,152 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,6 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class A2
source of spectral data Taken from the HD with M stars reclassified by Miss Cannon.

catalogues

source catalogue FK3, catalogue number: 96
Durchmusterung BD+02 422
Boss General Catalogue 3276
Henry Draper Catalogue 16970

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

position and proper motion:

position (J2000) RA: 2h 43,3min DEC: +3 14'
proper motion (J2000) RA: -0,145 arcsec/a DEC: -0,147 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
- 1825 often 289 2,7'' 3,6 7,4 A1V STF 299
1986 297 2,9''

discoverer information:

discoverer code discoverer reference
STF 299 Struve, F.G.W. -

notes:

note Gamma Cet. Proper motion of B -180 -121.