SS 433
Binary star system in the constellation Aquila / From Wikipedia, the free encyclopedia
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SS 433 is a microquasar or eclipsing X-ray binary system, consisting of a stellar-mass black hole accreting matter from an A-type companion star.[5][6] SS 433 is the first discovered microquasar.[7] It is at the centre of the supernova remnant W50.
Quick Facts Constellation, Right ascension ...
SS 433 at the centre of supernova remnant W50 Credit: NRAO/AUI/NSF, K. Golap, M. Goss; NASA’s Wide Field Survey Explorer (WISE) | |
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
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Constellation | Aquila |
Right ascension | 19h 11m 49.56s[1] |
Declination | +04° 58′ 57.8″[1] |
Apparent magnitude (V) | 13.0 - 17.3[2] |
Characteristics | |
Spectral type | A7Ib |
Variable type | Eclipsing binary[2] |
Astrometry | |
Proper motion (μ) | RA: −3.027[1] mas/yr Dec.: −4.777[1] mas/yr |
Parallax (π) | 0.1182 ± 0.0233 mas[1] |
Distance | 18,000±700 ly (5,500±200[3][4] pc) |
Orbit[5] | |
Period (P) | 13.082 d |
Eccentricity (e) | 0.05 ± 0.01 |
Inclination (i) | 79° |
Other designations | |
V1343 Aql, GAL 039.7-02.0, 2MASS J19114957+0458578, USNO 659, 1A 1909+04, 87GB 190920.8+045332, NEK 40.1-02.1, 3A 1909+048, GPS 1909+049, RGB J1911+049, BWE 1909+0453, GRS 039.60 -01.80, RX J1911.7+0459, 4C 04.66, 1H 1908+047, 1RXS J191149.7+045857, 2E 1909.3+0453, HBHA 204-02, AAVSO 1906+04, 2E 4204, INTEGRAL1 110, TXS 1909+048, 1ES 1909+04.8, INTREF 969, 4U 1908+05. | |
Database references | |
SIMBAD | data |
Close
SS 433's designation comes from the initials of two astronomers at Case Western Reserve University: Nicholas Sanduleak and Charles Bruce Stephenson. It was the 433rd entry in their 1977 catalog of stars with strong emission lines.[7] Its emission lines were studied by Mordehai Milgrom in 1979.[8]