114 Tauri, a blue-white main-sequence star in Taurus
114 Tauri is a blue-white main-sequence star in the constellation Taurus. At 604 light years away, it shines at an apparent visual magnitude of 4.87.
114 Tauri (HIP 25539)
114 Tauri is a blue-white main-sequence star in the constellation Taurus. At 604 light years away, it shines at an apparent visual magnitude of 4.87. It is moving through the Galaxy at a speed of 18.2 km/s relative to the Sun.
Sky position: RA 5h 27.6m, Dec +21° 56.2'
Common designations: 114 Tauri, o Tauri, HR 1810, HD 35708, Gaia DR3 3403954378869634304, HIP 25539
114 Tauri has the spectral type B2.5V. 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 V means it is a main-sequence (dwarf) star, still fusing hydrogen into helium in its core like the Sun.
How to find 114 Tauri in the sky
114 Tauri lies in Taurus. With a declination of +21° 56.2', it is visible from the entire Northern Hemisphere and from the Southern Hemisphere down to about latitude 68° S. It is bright enough to see with the naked eye under dark skies. 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 114 Tauri
Astrometry and spectroscopy
| Right Ascension (J2000) | 81.90868401° (5h 27.6m) |
| Declination (J2000) | 21.93696808° (+21° 56.2') |
| Galactic Longitude | 183.75286565° |
| Galactic Latitude | -7.17145291° |
| Proper motion RA | 4.10 mas/yr |
| Proper motion Dec | -7.70 mas/yr |
| Parallax | 5.40 ± 0.14 mas |
| Spectral Type | B2.5V |
| Radial Velocity | 16.50 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| U | 3.98 | -2.36 |
| B | 4.72 | -1.62 |
| V | 4.87 | -1.47 |
| J | 5.18 | -1.16 |
| H | 5.27 | -1.07 |
| K | 5.28 | -1.06 |
Colour index B-V: -0.15
Derivations
- Heliocentric distance: 185.29 pc (604 light years) (2.6% margin of error)
- Absolute visual magnitude: -1.47
- Transverse velocity: 7.7 km/s
- Space velocity relative to the Sun: 18.2 km/s
- Galactic position (X, Y, Z): -183.4 pc, -12.0 pc, -23.1 pc
- Galactic velocity (U, V, W): -15.8 km/s, -8.7 km/s, -2.7 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.