V Pup
| 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 |
|
magnitude
| 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 | |
magnitude:
| 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:
| 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:
| separation between brightest and second brightest component | 6,8 arcsec |
| position angle | 70 ° |
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 | |
| 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 | ||
magnitude:
| 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 |
catalogues
| 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. | - |
notes:
| note | A is the Beta Lyrae-type system V Pup. |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
| 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: |
references
| to a study | Vol. III GCVS |
| to a chart/photograph | Vol. I GCVS (see Kholopov et al. 1985-1988) |
miscanellous
| 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. 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. |
| SD | Semidetached systems in which the surface of the less massive component is close to its inner Roche lobe. |