MWC 560
A light curve for MWC 560. The main plot, displaying the ASAS-3 data, shows the long term variability, and the inset plot, adapted from Marchev et al., shows the intermittent short timescale flickering. | |
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Monoceros |
| Right ascension | 07h 25m 51.284s |
| Declination | −07° 44′ 08.08″ |
| Apparent magnitude (V) | 9.70 (9.1 to 10.1) |
| Characteristics | |
| Spectral type | M4ep + Beq |
| B−V color index | 0.31 |
| Astrometry | |
| Proper motion (μ) | RA: 2.067 mas/yr Dec.: 0.552 mas/yr |
| Parallax (π) | 0.424±0.0352 mas |
| Distance | 7,700 ± 600 ly (2,400 ± 200 pc) |
| Details | |
| M-type giant | |
| Mass | ~1 M☉ |
| White dwarf | |
| Mass | 0.9 M☉ |
| Radius | 6,221 km |
| Luminosity | 200 to 3,000 L☉ |
| Temperature | 7,000–13,000 K |
| Other designations | |
| MWC 560, V694 Mon, IRAS 07233-0737 | |
| Database references | |
| SIMBAD | data |
MWC 560 is a symbiotic binary star system in the equatorial constellation of Monoceros. The identifier comes from the Mount Wilson Calatogue of class O, B and A stars with bright hydrogen lines, published in 1933 by P. W. Merrill and associates. It has the variable star designation V694 Monoceros. This system has a typical apparent visual magnitude of 9.70, which is too dim to be visible to the naked eye. Based on parallax measurements, it is located at a distance of approximately 7,700 light years from the Sun.