HD 154346, an orange star in Hercules
HD 154346 is an orange star in the constellation Hercules. At 782 light years away, it shines at an apparent visual magnitude of 6.67.
HD 154346 (HIP 83459)
HD 154346 is an orange star in the constellation Hercules. At 782 light years away, it shines at an apparent visual magnitude of 6.67. It is moving through the Galaxy at a speed of 12.4 km/s relative to the Sun.
Sky position: RA 17h 3.4m, Dec +34° 23.0'
Common designations: HD 154346, HIP 83459, Gaia DR3 1337996150814632960
HD 154346 has the spectral type K2. 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.
How to find HD 154346 in the sky
HD 154346 lies in Hercules. With a declination of +34° 23.0', it is visible from the entire Northern Hemisphere and from the Southern Hemisphere down to about latitude 56° S. Observers poleward of latitude 56° N see it as circumpolar: it never sets. It is just beyond naked-eye visibility; binoculars will show it easily. It is highest in the sky at local midnight around July, which makes the weeks around that month the best time to observe it.
Tabulated data for HD 154346
Astrometry and spectroscopy
| Right Ascension (J2000) | 255.85901279° (17h 3.4m) |
| Declination (J2000) | 34.38348927° (+34° 23.0') |
| Galactic Longitude | 57.21547624° |
| Galactic Latitude | 36.22533082° |
| Proper motion RA | 9.34 mas/yr |
| Proper motion Dec | 5.62 mas/yr |
| Parallax | 4.17 ± 0.02 mas |
| Spectral Type | K2 |
| Radial Velocity | 0.42 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| B | 7.92 | 1.02 |
| V | 6.67 | -0.23 |
| J | 4.66 | -2.24 |
| H | 4.05 | -2.85 |
| K | 3.89 | -3.01 |
Colour index B-V: +1.25
Derivations
- Heliocentric distance: 239.89 pc (782 light years) (0.4% margin of error)
- Absolute visual magnitude: -0.23
- Transverse velocity: 12.4 km/s
- Space velocity relative to the Sun: 12.4 km/s
- Galactic position (X, Y, Z): 104.8 pc, 162.7 pc, 141.8 pc
- Galactic velocity (U, V, W): -3.8 km/s, 9.3 km/s, -7.2 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.