g2Volantis


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

  5. Combined General Catalogue of Variable Stars (suspected variables)


catalogues and names g2Vol, NSV 03448, HR 2736, HD 55865, SAO 256374, FK5: 1189, WDS 07087-7030A
constellation Volans

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


position, motion, parallax:

position (J2000) RA: 7h 8min 44,9sec DEC: -70 29' 56''
position (J1900) RA: 7h 9min 35,8sec DEC: -70 20' 11''
proper motion (J2000) RA: 0,023 arcsec/a DEC: 0,106 arcsec/a
radial velocity 3 km/s
note: suspected variable radial velocity
trigonometric parallax 0,016 arcsec
note (category: dynamical parallaxes): 0.018".

magnitude

visual magnitude 3,78
(V on UBV Johnson system)

spectral / color information

spectral class K0III
B-V-magnitude 1,04
U-B-magnitude 0,88

variability information

variable star identification 3448
note (category: variability): 3.56 - 3.62V, blend with 2735.

double/multiple star system information

separation 13,6 arcsec
mag difference (of double or brightest multiple) 1,9
note Worley (1978) update of the IDS
note (category: double and multiple data): Binary with HR 2735. Combined mag. and colors, 3.63V, +0.91(B-V), +0.60(U-B), +0.48(R-I).

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

position, motion, parallax:

position (J2000) RA: 7h 8min 44,877sec DEC: -70 29' 56,34'' 0,06 arcsec source: 15
proper motion (J2000) RA: 0,0046 arcsec/a DEC: 0,106 arcsec/a source: 25
radial velocity 3 km/s source: 25
trigonometric parallax 0,016 0,002 arcsec source: 25
galactic coord. (B1950) longitude: 281,56 latitude: -24,04
GCI unit vector (J2000) X: -0,098642 Y: 0,318917 Z: -0,942636

magnitude:

visual 3,78 (observed) source: 25
photovisual 3,9 source: 2
photographic 4,9 source: 2

spectral information:

spectral class K0 source: 29
Morgan-Keenan K0III source: 25
B-magnitude 4,82 0,05 B-V-magnitude 1,04
U-magnitude 5,7 0,05 U-B-magnitude 0,88

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 13,6 arcsec
magnitude difference between brightest and second brightest component 1,89
position angle 297

component magnitude spectral class catalogue(s)/name(s)
A 3,78 K0 g2Volantis, HR 2736, HD 55865, SAO 256374
B 5,69 G0 g1Volantis, HR 2735, HD 55864, SAO 256373

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
29 SAOJ2000
SAO on FK5 at J2000, 1989

data from Smithsonian Astrophysical Observatory Star Catalog (SAO Staff 1966; USNO, ADC 1990)

position and proper motion:

position (J1950) RA: 7h 9min 10,804sec DEC: -70 25' 4,75'' 0,011 arcsec
position (J2000) RA: 7h 8min 44,898sec DEC: -70 29' 56,46''
proper motion J1950 (FK4) RA: 0,0052 arcsec/a DEC: 0,102 arcsec/a 0,003 arcsec/a in RA
0,003 arcsec/a in DEC
proper motion J2000 (FK5) RA: 0,0049 arcsec/a DEC: 0,105 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 3,9 (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: 1189
Durchmusterung CP-70 600A
Boss General Catalogue 9514
Henry Draper Catalogue 55865

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

position and proper motion:

position (J2000) RA: 7h 8,7min DEC: -70 30'
proper motion (J2000) RA: 0,023 arcsec/a DEC: 0,106 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
- 1826 20 303 13,6'' 3,78 5,67 K0III F2V DUN 42
1977 297 -

discoverer information:

discoverer code discoverer reference
DUN 42 Dunlop, J. -

notes:

note Gamma (2) and Gamma (1) Vol. B is a spectroscopic binary and is variable. Proper motion of B +028 +096.

data from Combined General Catalogue of Variable Stars (suspected variables) (Kholopov+ 1998)

position:

position (J1950) RA: 7h 9min 10,8sec DEC: -70 25' 5''

variability informations:

magnitute at max. brightness 3,56
magnitute at min. brightness 3,62
photometric system visual, photovisual or Johnson's V

spectral information

spectral class G8

references

to a study 0807D (designation: 9G VOL)

miscanellous

There are notes in the published catalog (Kukarkin et al.(1982)).