t Ceti


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 t Cet, NSV 15373, 52 Cet, HR 509, HD 10700, SAO 147986, FK5: 59, WDS 01441-1556
constellation Cetus

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


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

position, motion, parallax:

position (J2000) RA: 1h 44min 4,1sec DEC: -15 56' 15''
position (J1900) RA: 1h 39min 25,3sec DEC: -16 27' 51''
proper motion (J2000) RA: -1,718 arcsec/a DEC: 0,856 arcsec/a
radial velocity -16 km/s
note: variable radial velocity
rotational velocity 2 km/s (uncertain) (variable)
trigonometric parallax 0,275 arcsec

magnitude

visual magnitude 3,5
(V on UBV Johnson system)

spectral / color information

spectral class G8V
B-V-magnitude 0,72
U-B-magnitude 0,21
R-I-magnitude 0,47

double/multiple star system information

separation 89,8 arcsec
mag difference (of double or brightest multiple) 9,5
note Worley (1978) update of the IDS

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

position, motion, parallax:

position (J2000) RA: 1h 44min 4,091sec DEC: -15 56' 14,89'' 0,06 arcsec source: 15
proper motion (J2000) RA: -0,1191 arcsec/a DEC: 0,856 arcsec/a source: 25
radial velocity -16 km/s source: 25
trigonometric parallax 0,275 0,027 arcsec source: 25
galactic coord. (B1950) longitude: 173,2 latitude: -73,43
GCI unit vector (J2000) X: 0,864121 Y: 0,421778 Z: -0,274588

magnitude:

visual 3,5 (observed) source: 25
photovisual 3,7 source: 2
photographic 4,7 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan G8V source: 25
B-magnitude 4,22 0,05 B-V-magnitude 0,72
U-magnitude 4,43 0,05 U-B-magnitude 0,21

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 89,8 arcsec
magnitude difference between brightest and second brightest component 9,6
position angle 215

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: 1h 41min 44,66sec DEC: -16 12' 0,5'' 0,006 arcsec
position (J2000) RA: 1h 44min 4,118sec DEC: -15 56' 14,62''
proper motion J1950 (FK4) RA: -0,1194 arcsec/a DEC: 0,858 arcsec/a 0,001 arcsec/a in RA
0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,1188 arcsec/a DEC: 0,859 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 K0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 59
Durchmusterung BD-16 295
Boss General Catalogue 2123
Henry Draper Catalogue 10700

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

position and proper motion:

position (J2000) RA: 1h 44,1min DEC: -15 56'
proper motion (J2000) RA: 0 arcsec/a DEC: 0,856 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
- 1911 4 243 10,8'' 3,5 13,1 G8V BUP 25
1939 215 89,8''

discoverer information:

discoverer code discoverer reference
BUP 25 - -

notes:

note Tau Ceti. Optical. Proper motion of A -1718 +856.