| Observation data EpochJ2000 EquinoxJ2000 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 06h 49m 57.57s[1] |
| Declination | +60° 20′ 14.53″[1] |
| Apparent magnitude (V) | 8.58[2] |
| Characteristics | |
| Evolutionary stage | Main sequence star |
| Spectral type | K3V[3] |
| Apparent magnitude (J) | 6.33±0.02[2] |
| Apparent magnitude (H) | 5.73±0.02[2] |
| Apparent magnitude (K) | 5.61±0.02[2] |
| B−Vcolor index | 1.21[2] |
| Astrometry | |
| Radial velocity (Rv) | −52.061±0.0020[3] km/s |
| Proper motion (μ) | RA: 253.401±0.020mas/yr[3] Dec.: 410.798±0.017mas/yr[3] |
| Parallax (π) | 59.393±0.025 mas[2] |
| Distance | 54.91 ± 0.02 ly (16.837 ± 0.007 pc) |
| Absolute magnitude (MV) | 7.46±0.05[4] |
| Details[2] | |
| Mass | 0.686+0.020 −0.013 M☉ |
| Radius | 0.679±0.004 R☉ |
| Luminosity | 0.156[5] L☉ |
| Temperature | 4593±60 K |
| Metallicity[Fe/H] | −0.21±0.03 dex |
| Rotation | 43.45+1 −0.71 d |
| Rotational velocity (v sin i) | <2 km/s |
| Age | 11.48+1.93 −4.67 Gyr |
| Other designations | |
| BD+60° 1003,Gaia DR3 1003351437484254464,HIP 32769,TYC 4097-1471-1,2MASS J06495699+6020077 | |
| Database references | |
| SIMBAD | data |
HD 48948 is aK-type main-sequence star located in the constellationLynx, approximately 55light years away, based on a parallax of 59.393mas. At anapparent magnitude of 8.58, it is too faint to be seen with the naked eye.[2]
It has astellar classification of K3V, which classifies it as amain sequence star (like our Sun) fusing atoms of hydrogen into helium at its core. Estimated to be 11.5 billion years old, HD 48948 has 0.68 times themass andradius of the Sun. Its surface has aneffective temperature of 4,593 K,[2] giving it the orange glow of aK-type star.[6]
In 2024, three planets were discovered orbiting HD 48948 viaradial velocity using theHARPS-N spectrograph, with orbital periods of 7.3, 38 and 151 days, respectively,[7] derived from 189 measurements over a 9.5-year period from 6 October 2013 to 16 April 2023. Of the three planets, the outermost planet, HD 48948 d, asuper-Earth weighing10.59±1.00 Earth masses, is located within thehabitable zone.[8]
| Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | >4.88±0.21 M🜨 | 0.0652±0.0005 | 7.34013±0.00040 | 0.078+0.058 −0.050 | — | — |
| c | >7.27±0.70 M🜨 | 0.1951±0.0016 | 37.920+0.026 −0.024 | 0.22+0.10 −0.11 | — | — |
| d | >10.59±1.00 M🜨 | 0.4894±0.0042 | 150.95+0.45 −0.41 | 0.12+0.12 −0.08 | — | — |
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