R Monocerotis
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Monoceros |
| Right ascension | 06h 39m 09.95s |
| Declination | +08° 44′ 09.7″ |
| Apparent magnitude (V) | 11.85 |
| Characteristics | |
| Spectral type | B8IIIe |
| Variable type | T Tauri |
| Astrometry | |
| Radial velocity (Rv) | 12 km/s |
| Distance | 2600 ly (800pc) |
| Other designations | |
| Database references | |
| SIMBAD | data |
R Monocerotis (R Mon) is a T Tauri variable in the constellation Monoceros. The apparent magnitude of R Mon varies between 10 and 12 and the spectral type B8IIIe.
The star is located in a diffuse nebula called "Hubble's Variable Nebula" (NGC 2261). According to some astronomers, the "star" R Monocerotis is not more than a very bright concentration of gases within the nebula, and some sky catalogues and atlases do not list it as a star.
...
Wikipedia