V715 Monocerotis, a blue-white giant star in Monoceros
V715 Monocerotis is a blue-white giant star in the constellation Monoceros. At 2,464 light years away, it shines at an apparent visual magnitude of 6.15.
V715 Monocerotis (HIP 32682)
V715 Monocerotis is a blue-white giant star in the constellation Monoceros. At 2,464 light years away, it shines at an apparent visual magnitude of 6.15. It is moving through the Galaxy at a speed of 25.8 km/s relative to the Sun.
Sky position: RA 6h 49.1m, Dec +1° 0.1'
Common designations: V715 Monocerotis, HR 2517, HD 49567, HIP 32682, Gaia DR3 3125675682464035840
V715 Monocerotis has the spectral type B3III. B-type stars are hot (about 10,000 to 30,000 K), luminous and blue-white. They are massive, short-lived stars, typically only tens of millions of years old, and are common in young clusters and OB associations. Its luminosity class III marks it as a giant: an evolved star that has left the main sequence and swollen to many times its original size.
How to find V715 Monocerotis in the sky
V715 Monocerotis lies in Monoceros. With a declination of +1° 0.1', it is visible from the entire Northern Hemisphere and from the Southern Hemisphere down to about latitude 89° S. It is just beyond naked-eye visibility; binoculars will show it easily. It is highest in the sky at local midnight around January, which makes the weeks around that month the best time to observe it.
Tabulated data for V715 Monocerotis
Astrometry and spectroscopy
| Right Ascension (J2000) | 102.26523368° (6h 49.1m) |
| Declination (J2000) | 1.00206741° (+1° 0.1') |
| Galactic Longitude | 211.76914250° |
| Galactic Latitude | -0.07187669° |
| Proper motion RA | -1.22 mas/yr |
| Proper motion Dec | -2.88 mas/yr |
| Parallax | 1.32 ± 0.06 mas |
| Spectral Type | B3III |
| Radial Velocity | 23.20 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| U | 5.34 | -4.05 |
| B | 6.00 | -3.39 |
| V | 6.15 | -3.24 |
| J | 6.36 | -3.03 |
| H | 6.47 | -2.92 |
| K | 6.47 | -2.92 |
Colour index B-V: -0.15
Derivations
- Heliocentric distance: 755.57 pc (2,464 light years) (4.3% margin of error)
- Absolute visual magnitude: -3.24
- Transverse velocity: 11.2 km/s
- Space velocity relative to the Sun: 25.8 km/s
- Galactic position (X, Y, Z): -642.4 pc, -397.8 pc, -0.9 pc
- Galactic velocity (U, V, W): -15.9 km/s, -18.3 km/s, -8.6 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.