Epoch J2000.0 Equinox J2000.0 (ICRS)
|Right ascension||06h 49m 51.3139s|
|Declination||−53° 37′ 20.818″|
|Apparent magnitude (V)||+4.418|
|U−B color index||+0.61|
|B−V color index||+0.92|
|R−I color index||+0.45|
|Radial velocity (Rv)||26.0 ± 0.9 km/s|
|Proper motion (μ)||RA: −2.27 mas/yr
Dec.: 17.57 mas/yr
|Parallax (π)||5.90 ± 0.51 mas|
|Distance||550 ± 50 ly
(170 ± 10 pc)
HR 2554, also known as V415 Carinae and A Carinae, is an eclipsing spectroscopic binary of the Algol type in the constellation of Carina whose apparent visual magnitude varies by 0.06 magnitudes and is approximately 4.39 at maximum brightness. Its primary is a G-type bright giant star and its secondary is an A-type main sequence star. It is approximately 553 light years from Earth.
HR 2554 A
HR 2554 B
HR 2554 binary system
HR 2554 has two components in orbit around each other, making it a binary star. The semi-major axis of the secondary's orbit is 2.17 arcseconds. The two components regularly eclipse each other, making A Carinae a variable star. Its brightness varies by 0.06 magnitudes with a period equal to its orbital period of 195 days.
- V* V415 Car -- Eclipsing binary of Algol type, database entry, SIMBAD. Accessed on line August 23, 2008.
- HR 2554, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line August 23, 2008.
- V415 Car, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line August 23, 2008.
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