A Carinae
catalogues and names
catalogues and names | A Car, V0415 Car, HR 2554, HD 50337, SAO 234737, CP -53 1168 |
constellation | Carina |
data from The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version) (Hoffleit+, 1991)
position, motion, parallax:
position (J2000) | RA: 6h 49min 51.3sec | DEC: -53° 37' 20'' | ||
position (2000.73) | RA: 6h 49min 52sec | DEC: -53° 37' 23'' | ||
position (B1900) | RA: 6h 47min 40.9sec | DEC: -53° 30' 19'' | ||
proper motion (J2000) | RA: 0 arcsec/a | DEC: 0.03 arcsec/a | ||
radial velocity | 26 km/s note: spectroscopic binaries note: orbital data avaible |
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trigonometric parallax | 0.025 arcsec | |||
galactic coordinates | longitude: 263.24° | latitude: -21.76° |
magnitude
visual magnitude | 4.4 (V on UBV Johnson system) |
spectral / color information
spectral class | G6II |
B-V-magnitude | 0.92 |
U-B-magnitude | 0.61 |
R-I-magnitude |
note (category: spectra): | Secondary A0V and about 3 mag. fainter than primary. |
variability information
variable star identification | V415 Car |
note (category: variability): | From orbit based on IUE data, the star should be eclipsing with period 195.24d. |
double/multiple star system information
note (category: spectroscopic binaries): | 195.26d, K 24.9k/s, V0 +25.5k/s, asini 66.9. |
data from SKY2000 - Master Star Catalog (Myers+ 1997)
position, motion, parallax:
position (J2000) | RA: 6h 49min 51.315sec | DEC: -53° 37' 20.45'' | ±0.19 arcsec | source: 16 |
position (2000.73) | RA: 6h 49min 52sec | DEC: -53° 37' 23'' | JD: 2451810.11 | |
proper motion (J2000) | RA: -0.0003 arcsec/a | DEC: 0.024 arcsec/a | source: 25 | |
radial velocity | 26 km/s | source: 25 | ||
trigonometric parallax | 0.025 arcsec | ±0.002 arcsec | source: 25 | |
galactic coord. (B1950) | longitude: 263.25° | latitude: -21.76° |
magnitude:
visual | 4.4 (observed) | source: 25 |
photovisual | 4.4 | source: 2 |
spectral information:
spectral class | G5 | source: 96 | |
Morgan-Keenan | G6II | source: 25 | |
B-magnitude | 5.32 ±0.05 | B-V-magnitude | 0.92 |
U-magnitude | 5.93 ±0.05 | U-B-magnitude | 0.61 |
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 | |
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 (B1950) | RA: 6h 48min 46.131sec | DEC: -53° 33' 47.16'' | ±0.028 arcsec |
position (2000.73) | RA: 6h 49min 52sec | DEC: -53° 37' 24'' | JD: 2451810.11 |
position (J2000) | RA: 6h 49min 51.334sec | DEC: -53° 37' 19.61'' | |
proper motion B1950 (FK4) | RA: -0.0004 arcsec/a | DEC: 0.03 arcsec/a | ±0.006 arcsec/a in RA ±0.005 arcsec/a in DEC |
proper motion J2000 (FK5) | RA: 0 arcsec/a | DEC: 0.03 arcsec/a | |
source of proper motion data | Determined by source catalog |
magnitude:
visual | 4.4 (accuracy: 2 decimals) |
source of visual magnitude data | Taken from Harvard or San Luis photometry. |
spectral information:
spectral class | G5 |
source of spectral data | Taken from the Henry Draper Catalogue or no spectrum in source catalog. |
catalogues
source catalogue | GC, catalogue number: 8972 |
Durchmusterung | CP-53 1168 |
Boss General Catalogue | 8972 |
Henry Draper Catalogue | 50337 |
data from Combined General Catalogue of Variable Stars (Vol. I-III) (Kholopov+ 1998)
position:
position (equinox 1950.0) | RA: 6h 48min 46.1sec | DEC: -53° 33' 47'' |
variability informations:
variability type | EA/GS | close binary eclipsing system |
magnitute at max. brightness | 4.39 | |
magnitute amplitude | 0.06 | |
photometric system | visual, photovisual or Johnson's V |
references
to a study | T.B.Ake, S.B.Parsons, IBVS No.3002,1987. |
to a chart/photograph | no chart is avaible, but the star is contained in the 'Cape Photographic Durchmusterung' |
miscanellous
ID in the GCVS catalogue | 17/415 |
constellation | Carina |
notes on existence | The star is equivalent to '69123'. |
variability type description
variability type | description |
EA | 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. |
GS | Systems with one or both giant and supergiant components; one of the components may be a main sequence star. |