27 Comae Berenices, an orange giant star in Coma Berenices
27 Comae Berenices is an orange giant star in the constellation Coma Berenices. At 305 light years away, it shines at an apparent visual magnitude of 5.12.
27 Comae Berenices (HIP 62356)
27 Comae Berenices is an orange giant star in the constellation Coma Berenices. At 305 light years away, it shines at an apparent visual magnitude of 5.12. It is moving through the Galaxy at a speed of 51.9 km/s relative to the Sun.
Sky position: RA 12h 46.6m, Dec +16° 34.7'
Common designations: 27 Comae Berenices, HR 4851, HD 111067, HIP 62356, Gaia DR3 3934385451263677568
27 Comae Berenices has the spectral type K4III. K-type stars are orange stars with surface temperatures of about 3,900 to 5,300 K. Their spectra are rich in neutral metal lines and, in the cooler examples, molecular bands. 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 27 Comae Berenices in the sky
27 Comae Berenices lies in Coma Berenices. With a declination of +16° 34.7', it is visible from the entire Northern Hemisphere and from the Southern Hemisphere down to about latitude 73° S. It is bright enough to see with the naked eye under dark skies. It is highest in the sky at local midnight around April, which makes the weeks around that month the best time to observe it.
Tabulated data for 27 Comae Berenices
Astrometry and spectroscopy
| Right Ascension (J2000) | 191.66150768° (12h 46.6m) |
| Declination (J2000) | 16.57768781° (+16° 34.7') |
| Galactic Longitude | 296.68335578° |
| Galactic Latitude | 79.39125299° |
| Proper motion RA | 14.36 mas/yr |
| Proper motion Dec | 15.90 mas/yr |
| Parallax | 10.69 ± 0.10 mas |
| Spectral Type | K4III |
| Radial Velocity | 51.04 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| B | 6.46 | 1.61 |
| V | 5.12 | 0.27 |
| J | 2.71 | -2.14 |
| H | 2.05 | -2.80 |
| K | 1.92 | -2.94 |
Colour index B-V: +1.34
Derivations
- Heliocentric distance: 93.53 pc (305 light years) (0.9% margin of error)
- Absolute visual magnitude: 0.27
- Transverse velocity: 9.5 km/s
- Space velocity relative to the Sun: 51.9 km/s
- Galactic position (X, Y, Z): 7.7 pc, -15.4 pc, 91.9 pc
- Galactic velocity (U, V, W): 5.9 km/s, 0.9 km/s, 51.6 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.