XTE J1118+480
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Ursa Major |
| Right ascension | 11h 18m 10.80s |
| Declination | 48° 02′ 12.3″ |
| Apparent magnitude (V) | 12.25 |
| Orbit | |
| Primary | Black hole |
| Companion | B |
| Period (P) | <0.5 d |
| Eccentricity (e) | 0.022±0.003 |
| Inclination (i) | 74±4° |
| Details | |
| Black hole | |
| Mass | 7.24+0.9 −0.7 M☉ |
| B | |
| Mass | 0.2±0.02 M☉ |
| Other designations | |
| KV Ursae Majoris, 2MASS J11181079+4802126, AAVSO 1112+48 | |
| Database references | |
| SIMBAD | data |
XTE J1118+480 is a low-mass X-ray binary in the constellation Ursa Major. It is a soft X-ray transient that most likely contains a black hole and is probably a microquasar.