| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Puppis |
| Right ascension | 06h 20m 06.13481s[1] |
| Declination | −48° 44′ 27.9261″[1] |
| Apparent magnitude (V) | 6.64[2] |
| Characteristics | |
| Spectral type | G1.5V[3] |
| U−Bcolor index | +0.20[2] |
| B−Vcolor index | +0.66[2] |
| Astrometry | |
| Radial velocity (Rv) | +59.1[4] km/s |
| Proper motion (μ) | RA: +234.059[1]mas/yr Dec.: −266.258[1]mas/yr |
| Parallax (π) | 38.3524±0.0150 mas[1] |
| Distance | 85.04 ± 0.03 ly (26.07 ± 0.01 pc) |
| Absolute magnitude (MV) | 4.56[4] |
| Details | |
| Mass | 1.08[5] M☉ |
| Radius | 1.2[1] R☉ |
| Luminosity | 1.3[1] L☉ |
| Surface gravity (log g) | 4.38[6] cgs |
| Temperature | 5,840[6] K |
| Metallicity[Fe/H] | +0.15[6] dex |
| Rotational velocity (v sin i) | 4.4[7] km/s |
| Age | 4.1[5] Gyr |
| Other designations | |
| HR 2290,CD−48 2259,HD 44594,LTT 2525,SAO 217861,FK5 2486,HIP 30104[8] | |
| Database references | |
| SIMBAD | data |
HD 44594 is astar in the southernconstellationPuppis. It has anapparent visual magnitude of 6.64, so it can be seen with the naked eye from the southern hemisphere undergood viewing conditions. Based uponparallax measurements, it is located at a distance of 85light-years (26parsecs) from theEarth, giving it an absolute magnitude of 4.56.[4]
Measurement of the star'sspectrum show it to match astellar classification of G1.5V,[3] which is close to the Sun's spectral class of G2V. In thewavelength range 3,250–8,750 Â, the energy emission of this star is very similar to the Sun, and thus it is considered asolar analog.[9] Theluminosity class 'V' means this is amain sequence star that is generating energy through thethermonuclear fusion of hydrogen at its core. Theeffective temperature of the outer envelope of HD 44594 is 5,840 K,[6] which is giving it the characteristic yellow hue of a G-type star.[10]
This star has about 108%[5] of theSun's mass and is about the same radius as the Sun.[1] It may be slightly younger than the Sun with an estimated age of 4.1 billion years.[5] the abundance of elements other than hydrogen or helium, what astronomers term the star'smetallicity, is 41% higher than in the Sun.[11] Theprojected rotational velocity of the star is4.4 km/s,[7] which gives the minimumazimuthal velocity along the star's equator.
This star has been examined in theinfrared using theSpitzer Space Telescope. However, noexcess emission was discovered, which might otherwise have indicated the presence of a circumstellardebris disk of orbiting dust.[12]Gaia Data Release 3 shows a faint companion about7″ away. The companion is 9 magnitudes fainter than the G-type star with an almost-identical parallax andcommon proper motion.[13]
