c Tauri


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 c Tau, NSV 15957, 59 Tau, HR 1369, HD 27638, SAO 76573, WDS 04226+2538
constellation Taurus

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


position, motion, parallax:

position (J2000) RA: 4h 22min 34,9sec DEC: +25 37' 45''
position (J1900) RA: 4h 16min 29,7sec DEC: +25 23' 37''
proper motion (J2000) RA: 0,017 arcsec/a DEC: -0,023 arcsec/a
radial velocity 17 km/s
note: variable radial velocity
rotational velocity 350 km/s (uncertain) (variable)
note (category: radial and/or rotational velocities): ADS 3161B, +36.8k/s.

magnitude

visual magnitude 5,37
(V on UBV Johnson system)

spectral / color information

spectral class B9V
B-V-magnitude -0,05
U-B-magnitude -0,08

double/multiple star system information

number of components of multiple star system 3
separation 19,4 arcsec
mag difference (of double or brightest multiple) 3
note (category: double and multiple data): CPM. Component A suspected occultation double; component B, G2V, strong lithium.

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

position, motion, parallax:

position (J2000) RA: 4h 22min 34,928sec DEC: +25 37' 45,82'' 0,2 arcsec source: 52
proper motion (J2000) RA: 0,001 arcsec/a DEC: -0,009 arcsec/a source: 25
radial velocity 17 km/s source: 25
galactic coord. (B1950) longitude: 171,51 latitude: -16,74
GCI unit vector (J2000) X: 0,371807 Y: 0,821378 Z: 0,432548

magnitude:

visual 5,37 (observed) source: 25
photovisual 5,4 source: 2
photographic 5,4 source: 16

spectral information:

spectral class B9 source: 96
Morgan-Keenan B9V source: 25
B-magnitude 5,32 0,05 B-V-magnitude -0,05
U-magnitude 5,24 0,05 U-B-magnitude -0,08

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 19,5 arcsec
magnitude difference between brightest and second brightest component 3,03
position angle 25

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
16 PPM North and PPM South Catalogs and PPM Supplement
Roser, S., and U. Bastian, "Catalogue of Positions and Proper Motions," A&AS, Vol. 74, p. 449, 1988, and Bastian, U., et al., "Catalogue of Positions and Proper Motions - South," 1993
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
52 PPMN-HP subset
PPMN Star Catalogue (Reference 16) High-Precision Subset (Code H)
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: 4h 19min 32,079sec DEC: +25 30' 46,87'' 0,015 arcsec
position (J2000) RA: 4h 22min 34,919sec DEC: +25 37' 44,99''
proper motion J1950 (FK4) RA: 0,0013 arcsec/a DEC: -0,021 arcsec/a 0,003 arcsec/a in RA
0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0012 arcsec/a DEC: -0,023 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 5,4 (accuracy: 2 decimals)
source of visual magnitude data Taken from Harvard or San Luis photometry.

spectral information:

spectral class B9
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Double star in Aitken's Double Star Catalogue (Aitken 1932)

catalogues

source catalogue GC, catalogue number: 5292
Durchmusterung BD+25 707
Boss General Catalogue 5292
Henry Draper Catalogue 27638

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

position and proper motion:

position (J2000) RA: 4h 22,6min DEC: +25 38'
proper motion (J2000) RA: 0,019 arcsec/a DEC: -0,018 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 39 25 19,5'' 5,4 8,43 B9Vnn F8V STF 528

discoverer information:

discoverer code discoverer reference
STF 528 Struve, F.G.W. -

notes:

note Chi Tau. Proper motion of B +032 +003.