Avior

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. Combined General Catalogue of Variable Stars (suspected variables)

catalogues and names Avior, e Car, NSV 04058, HR 3307, HD 71129, SAO 235932, FK5: 315
constellation Carina

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

note (category: star names): Avior.

position, motion, parallax:

position (J2000) RA: 8h 22min 30,8sec DEC: -59° 30' 35''
position (J1900) RA: 8h 20min 27,7sec DEC: -59° 11' 15''
proper motion (J2000) RA: -0,026 arcsec/a DEC: 0,014 arcsec/a
radial velocity 2 km/s

magnitude

visual magnitude 1,86
(V on UBV Johnson system)

spectral / color information

spectral class K3III+B2:V
B-V-magnitude 1,28
U-B-magnitude 0,19
R-I-magnitude 0,89
note (category: spectra): Also classified K0II + B2.

variability information

variable star identification 4058
note (category: variability): E? 1.82 - 1.94V, 3.57 - 3.83p, 785:d.

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

position, motion, parallax:

position (J2000) RA: 8h 22min 30,833sec DEC: -59° 30' 34,51'' ±0,06 arcsec source: 15
proper motion (J2000) RA: -0,0035 arcsec/a DEC: 0,014 arcsec/a source: 25
radial velocity 2 km/s source: 25
galactic coord. (B1950) longitude: 274,29° latitude: -12,6°
GCI unit vector (J2000) X: -0,295571 Y: 0,412416 Z: -0,861714

magnitude:

visual 1,86 (observed) source: 25
photovisual 1,7 source: 2
photographic 2,7 source: 2

spectral information:

spectral class K0 source: 96
Morgan-Keenan K3III+B2:V source: 25
B-magnitude 3,14 ±0,05 B-V-magnitude 1,28
U-magnitude 3,33 ±0,05 U-B-magnitude 0,19

variability information:

source of data: 28
variability type 300
var. amplitude 0,12

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: 8h 21min 29,383sec DEC: -59° 20' 52,98'' ±0,008 arcsec
position (J2000) RA: 8h 22min 30,838sec DEC: -59° 30' 34,27''
proper motion J1950 (FK4) RA: -0,0033 arcsec/a DEC: 0,015 arcsec/a ±0,002 arcsec/a in RA
±0,002 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0033 arcsec/a DEC: 0,017 arcsec/a
source of proper motion data Determined by source catalog

magnitude:

visual 1,7 (accuracy: 2 decimals)
source of visual magnitude data Taken from the "Henry Draper Catalogue".

spectral information:

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

catalogues

source catalogue FK4, catalogue number: 315
Durchmusterung CP-59 1032
Boss General Catalogue 11463
Henry Draper Catalogue 71129
The "SAO Catalog" entry refers to two consecutive HD numbers, the lower of which is given.

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

position:

position (J1950) RA: 8h 21min 29,4sec DEC: -59° 20' 53''

variability informations:

variability type E: close binary eclipsing system
magnitute at max. brightness 1,82
magnitute at min. brightness 1,94
photometric system visual, photovisual or Johnson's V

spectral information

spectral class *

references

to a study 591683D (designation: EPSIL.CAR)

miscanellous

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

variability type description

variability type description
E
 Eclipsing binary systems. These are binary systems with orbital planes so close to the observer's line of sight (the inclination i of the orbital plane to the plane orthogonal to the line of sight is close to 90 deg) that the components periodically eclipse each other.
Consequently, the observer finds changes of the apparent combined brightness of the system with the period coincident with that of the components' orbital motion.

EA
Algol (Beta Persei)-type eclipsing systems. Binaries with spherical or slightly ellipsoidal components. It is possible to specify, for their light curves, the moments of the beginning and end of the eclipses. Between eclipses the light remains almost constant or varies insignificantly because of reflection effects, slight ellipsoidality of components, or physical variations. Secondary minima may be absent. An extremely wide range of periods is observed, from 0.2 to >= 10000 days. Light amplitudes are also quite different and may reach several magnitudes.

EB
Beta Lyrae-type eclipsing systems. These are eclipsing systems having ellipsoidal components and light curves for which it is impossible to specify the exact times of onset and end of eclipses because of a continuous change of a system's apparent combined brightness between eclipses; secondary minimum is observed in all cases, its depth usually being considerably smaller than that of the primary minimum; periods are mainly longer than 1 day. The components
generally belong to early spectral types (B-A). Light amplitudes are usually <2 mag in V.

EW
W Ursae Majoris-type eclipsing variables. These are eclipsers with periods shorter than 1 days, consisting of ellipsoidal components almost in contact and having light curves for which it is impossible to specify the exact times of onset and end of eclipses. The depths of the primary and secondary minima are almost equal or differ insignificantly. Light amplitudes are usually <0.8 mag in V. The components generally belong to spectral types F-G and later.