HD 174512, a white giant star in Scutum
HD 174512 is a white giant star in the constellation Scutum. At 7,256 light years away, it shines at an apparent visual magnitude of 8.56.
HD 174512 (HIP 92507)
HD 174512 is a white giant star in the constellation Scutum. At 7,256 light years away, it shines at an apparent visual magnitude of 8.56. It is moving through the Galaxy at a speed of 53.5 km/s relative to the Sun.
Sky position: RA 18h 51.1m, Dec -6° 16.8'
Common designations: HD 174512, HIP 92507, Gaia DR3 4252502821320729344
HD 174512 has the spectral type A0II/III. A-type stars are white stars with surface temperatures of roughly 7,500 to 10,000 K. Their spectra are dominated by strong hydrogen lines, and many of them rotate rapidly. 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 HD 174512 in the sky
HD 174512 lies in Scutum. With a declination of -6° 16.8', it is visible from the entire Southern Hemisphere and from the Northern Hemisphere up to about latitude 84° N. 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 174512
Astrometry and spectroscopy
| Right Ascension (J2000) | 282.78323355° (18h 51.1m) |
| Declination (J2000) | -6.27917990° (-6° 16.8') |
| Galactic Longitude | 27.30444358° |
| Galactic Latitude | -2.79113078° |
| Proper motion RA | -1.45 mas/yr |
| Proper motion Dec | -4.34 mas/yr |
| Parallax | 0.45 ± 0.03 mas |
| Spectral Type | A0II/III |
| Radial Velocity | 23.00 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| B | 9.05 | -2.68 |
| V | 8.56 | -3.18 |
| J | 7.15 | -4.59 |
| H | 6.94 | -4.80 |
| K | 6.77 | -4.97 |
Colour index B-V: +0.50
Derivations
- Heliocentric distance: 2,224.69 pc (7,256 light years) (7.3% margin of error)
- Absolute visual magnitude: -3.18
- Transverse velocity: 48.3 km/s
- Space velocity relative to the Sun: 53.5 km/s
- Galactic position (X, Y, Z): 1974.5 pc, 1019.3 pc, -108.3 pc
- Galactic velocity (U, V, W): 42.0 km/s, -32.0 km/s, -8.3 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.