V Pup

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 (Vol. I-III)

catalogues and names V Pup, HR 3129, HD 65818, SAO 219226, WDS 07582-4915A

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

position, motion, parallax:

position (J2000) RA: 7h 58min 14,4sec DEC: -49 14' 42''
position (J1900) RA: 7h 55min 21,9sec DEC: -48 58' 25''
proper motion (J2000) RA: -0,011 arcsec/a DEC: 0,008 arcsec/a
radial velocity 19 km/s
note: spectroscopic binaries, double lined spectra
note: orbital data avaible


visual magnitude 4,41
(V on UBV Johnson system)

spectral / color information

spectral class B1Vp+B3IV:
B-V-magnitude -0,17
U-B-magnitude -0,96
note (category: spectra): Also classified B2II-III(n). Possible X-ray source 3U0750-49.

variability information

variable star identification V Pup
note (category: variability): Comp. A of visual double, EB 4.74 - 5.25p, 1.4544877d, contact binary, equal components.

double/multiple star system information

number of components of multiple star system 5
separation 39,2 arcsec
mag difference (of double or brightest multiple) 5,9
component ID AD
note Worley (1978) update of the IDS
note (category: spectroscopic binaries): Component A of visual system, 1.4545d. Relative vel. 610k. Probably consists of two ellipsoids in nearly circular orbit inclined 75d. Matter appears to stream from secondary to primary.

miscellaneous information

note (category: group membership): Member of Pleiades group.

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

position, motion, parallax:

position (J2000) RA: 7h 58min 14,481sec DEC: -49 14' 42,19'' 0,19 arcsec source: 16
proper motion (J2000) RA: -0,0003 arcsec/a DEC: -0,008 arcsec/a source: 25
radial velocity 14 km/s source: 25
galactic coord. (B1950) longitude: 263,48 latitude: -10,28
GCI unit vector (J2000) X: -0,322065 Y: 0,567851 Z: -0,757509


visual 4,35 (observed) source: 30
photovisual 4,4 source: 16
photographic 4,3 source: 2

spectral information:

spectral class B1 source: 96
Morgan-Keenan B1Vp+B3IV: source: 25
B-magnitude 4,24 0,05 B-V-magnitude -0,17
U-magnitude 3,28 0,05 U-B-magnitude -0,96

variability information:

source of data: 30
variability type 10
var. amplitude 0,57
var. period 1,45
var. epoch 2445368
2. February 1983, 12:00:00 UT
next max light 2451621,85
18. March 2000, 08:24:00 UT

double/multiple star system information:

source of data: 19
separation between brightest and second brightest component 6,8 arcsec
position angle 70


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
30 GCVS, 4th edition
Kholopov, P.N., et al., General Catalogue of Variable Stars, fourth edition, Moscow: Nauka Publishing House, 1985-88
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: 7h 56min 48,105sec DEC: -49 6' 30,45'' 0,029 arcsec
position (J2000) RA: 7h 58min 14,375sec DEC: -49 14' 41,81''
proper motion J1950 (FK4) RA: -0,0016 arcsec/a DEC: 0,007 arcsec/a 0,007 arcsec/a in RA
0,005 arcsec/a in DEC
proper motion J2000 (FK5) RA: -0,0011 arcsec/a DEC: 0,008 arcsec/a
source of proper motion data Determined by source catalog


visual 4,1 (accuracy: 1 decimal)
source of visual magnitude data Source cited in source catalog introduction.

spectral information:

spectral class B1p
source of spectral data Taken from the Henry Draper Catalogue or no spectrum in source catalog.

remarks for duplicity and variability

Both double and variable, in either visual or photographic magnitudes


source catalogue GC, catalogue number: 10802
Durchmusterung CD-48 3349
Boss General Catalogue 10802
Henry Draper Catalogue 65818

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

position and proper motion:

position (J2000) RA: 7h 58,2min DEC: -49 15'
proper motion (J2000) RA: -0,001 arcsec/a DEC: 0,01 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
AB 1880 4 70 6,8'' - 11,5 B1Vp+B3IV HRG 137
AC 1897 3 48 19'' - 13,2 - HJ 4025
AD 1880 4 38 39,2'' - 10 - HJ 4025
DE 1897 3 64 10,6'' 10 13 - SEE 93

discoverer information:

discoverer code discoverer reference
HRG 137 Hargrave, L. -
HJ 4025 Herschel, J. -
SEE 93 See, T.J. -


note A is the Beta Lyrae-type system V Pup.

data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)


position (J1950) RA: 7h 56min 48,1sec DEC: -49 6' 30''

variability informations:

variability type EB/SD close binary eclipsing system
magnitute at max. brightness 4,35
magnitute at min. brightness 4,92
photometric system visual, photovisual or Johnson's V
epoch for maximum light [JD] 2445367,60633
2. February 1983, 02:33:07 UT
period [d] 1,4544859
next maximum light [JD] 2451621,8957
18. March 2000, 09:29:48 UT

spectral information

spectral class B1Vp+B3:


to a study Vol. III GCVS
to a chart/photograph Vol. I GCVS (see Kholopov et al. 1985-1988)


ID in the GCVS catalogue 68/5
constellation Puppis
notes on existence The star is equivalent to '0680006 W'.
There are notes in published catalog.

variability type description

variability type description
EB 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.

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.

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.

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.
SD Semidetached systems in which the surface of the less massive component is close to its inner Roche lobe.