| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 17 02 49.5 |
| Declination | -48 47 23 |
| Characteristics | |
| Apparent magnitude (B) | 16.3 |
| Apparent magnitude (V) | 15.5 |
| Apparent magnitude (J) | 15.9 |
| Apparent magnitude (H) | 15.4 |
| Apparent magnitude (K) | 15.0 |
| Variable type | LMXB |
| Other designations | |
|
V821 Ara, 4U 1658-48, 3A 1659-487, 1RXS J170248.5-484719, 2MASS 17024936-4847228
|
|
GX 339-4 is a moderately strong variable galactic Low-Mass X-ray binary (LMXB) source[1][2] and black hole-candidate, which flares from time to time.