HD 38604, a yellow star in Auriga
HD 38604 is a yellow star in the constellation Auriga. At 626 light years away, it shines at an apparent visual magnitude of 6.80.
HD 38604 (HIP 27458)
HD 38604 is a yellow star in the constellation Auriga. At 626 light years away, it shines at an apparent visual magnitude of 6.80. It is moving through the Galaxy at a speed of 31.0 km/s relative to the Sun.
Sky position: RA 5h 48.9m, Dec +39° 32.0'
Common designations: 28 Aurigae, HD 38604, HIP 27458, Gaia DR3 191509366212532352
HD 38604 has the spectral type G0. G-type stars are yellow stars of about 5,300 to 6,000 K, the same class as the Sun. Their spectra show strong lines of ionized calcium and many metals.
How to find HD 38604 in the sky
HD 38604 lies in Auriga. With a declination of +39° 32.0', it is visible from the entire Northern Hemisphere and from the Southern Hemisphere down to about latitude 50° S. Observers poleward of latitude 50° 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 January, which makes the weeks around that month the best time to observe it.
Tabulated data for HD 38604
Astrometry and spectroscopy
| Right Ascension (J2000) | 87.21591163° (5h 48.9m) |
| Declination (J2000) | 39.53361561° (+39° 32.0') |
| Galactic Longitude | 171.24785579° |
| Galactic Latitude | 6.03623252° |
| Proper motion RA | 0.19 mas/yr |
| Proper motion Dec | -26.01 mas/yr |
| Parallax | 5.21 ± 0.03 mas |
| Spectral Type | G0 |
| Radial Velocity | 20.00 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| U | 8.02 | 1.61 |
| B | 7.61 | 1.20 |
| V | 6.80 | 0.39 |
| J | 5.23 | -1.18 |
| H | 4.80 | -1.61 |
| K | 4.73 | -1.68 |
Colour index B-V: +0.81
Derivations
- Heliocentric distance: 191.86 pc (626 light years) (0.6% margin of error)
- Absolute visual magnitude: 0.39
- Transverse velocity: 23.7 km/s
- Space velocity relative to the Sun: 31.0 km/s
- Galactic position (X, Y, Z): -188.6 pc, 29.0 pc, 20.2 pc
- Galactic velocity (U, V, W): -24.0 km/s, -17.0 km/s, -9.7 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.