Q Puppis, an orange giant star in Puppis
Q Puppis is an orange giant star in the constellation Puppis. At 221 light years away, it shines at an apparent visual magnitude of 4.71.
Q Puppis (HIP 38089)
Q Puppis is an orange giant star in the constellation Puppis. At 221 light years away, it shines at an apparent visual magnitude of 4.71. It is moving through the Galaxy at a speed of 41.5 km/s relative to the Sun.
Sky position: RA 7h 48.3m, Dec -47° 4.7'
Common designations: Q Puppis, HR 3046, HD 63744, Gaia DR3 5530571254685558144, HIP 38089
Q Puppis has the spectral type K0IIIb. 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 Q Puppis in the sky
Q Puppis lies in Puppis. With a declination of -47° 4.7', it is visible from the entire Southern Hemisphere and from the Northern Hemisphere up to about latitude 43° N. Observers poleward of latitude 43° S see it as circumpolar: it never sets. It is bright enough to see with the naked eye under dark skies. It is highest in the sky at local midnight around February, which makes the weeks around that month the best time to observe it.
Tabulated data for Q Puppis
Astrometry and spectroscopy
| Right Ascension (J2000) | 117.08399885° (7h 48.3m) |
| Declination (J2000) | -47.07772423° (-47° 4.7') |
| Galactic Longitude | 260.73210696° |
| Galactic Latitude | -10.65984774° |
| Proper motion RA | -102.50 mas/yr |
| Proper motion Dec | -78.64 mas/yr |
| Parallax | 14.77 ± 0.07 mas |
| Spectral Type | K0IIIb |
| Radial Velocity | -0.36 km/s |
Photometry
| Band | Magnitude | Abs. Mag. |
|---|---|---|
| U | 6.69 | 2.54 |
| B | 5.77 | 1.62 |
| V | 4.71 | 0.56 |
| R | 3.95 | -0.20 |
| I | 3.38 | -0.77 |
| J | 2.98 | -1.17 |
| H | 2.42 | -1.73 |
| K | 2.31 | -1.84 |
Colour index B-V: +1.06
Derivations
- Heliocentric distance: 67.69 pc (221 light years) (0.5% margin of error)
- Absolute visual magnitude: 0.56
- Transverse velocity: 41.5 km/s
- Space velocity relative to the Sun: 41.5 km/s
- Galactic position (X, Y, Z): -10.7 pc, -65.7 pc, -12.5 pc
- Galactic velocity (U, V, W): 7.6 km/s, 6.8 km/s, -40.2 km/s
Data: Extended Hipparcos Compilation (XHIP) and SIMBAD.