g Trianguli


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


catalogues and names g Tri, 9 Tri, HR 664, HD 14055, SAO 55427, FK5: 79
constellation Triangulum

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


position, motion, parallax:

position (J2000) RA: 2h 17min 18,9sec DEC: +33° 50' 50''
position (J1900) RA: 2h 11min 22sec DEC: +33° 23' 5''
proper motion (J2000) RA: 0,047 arcsec/a DEC: -0,051 arcsec/a
radial velocity 14 km/s
note: variable radial velocity
rotational velocity 208 km/s (uncertain) (variable)
trigonometric parallax 0,039 arcsec

magnitude

visual magnitude 4,01
(V on UBV Johnson system)

spectral / color information

spectral class A1Vnn
B-V-magnitude 0,02
U-B-magnitude 0,02
R-I-magnitude 0

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

position, motion, parallax:

position (J2000) RA: 2h 17min 18,87sec DEC: +33° 50' 50'' ±0,06 arcsec source: 15
proper motion (J2000) RA: 0,0038 arcsec/a DEC: -0,051 arcsec/a source: 25
radial velocity 14 km/s source: 25
trigonometric parallax 0,039 ±0,004 arcsec source: 25
galactic coord. (B1950) longitude: 142,66° latitude: -25,71°
GCI unit vector (J2000) X: 0,685862 Y: 0,468366 Z: 0,55698

magnitude:

visual 4,01 (observed) source: 25
photovisual 4,1 source: 2

spectral information:

spectral class A0 source: 96
Morgan-Keenan A1Vnn source: 25
B-magnitude 4,03 ±0,05 B-V-magnitude 0,02
U-magnitude 4,05 ±0,05 U-B-magnitude 0,02

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
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: 2h 14min 20,011sec DEC: +33° 37' 1,46'' ±0,005 arcsec
position (J2000) RA: 2h 17min 18,869sec DEC: +33° 50' 50,16''
proper motion J1950 (FK4) RA: 0,0037 arcsec/a DEC: -0,046 arcsec/a ±0,001 arcsec/a in RA
±0,001 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0037 arcsec/a DEC: -0,05 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 4,1 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

spectral class A0
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

catalogues

source catalogue FK4, catalogue number: 79
Durchmusterung BD+33 397
Boss General Catalogue 2742
Henry Draper Catalogue 14055