Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Eridanus |
Right ascension | 05h 00m 48.9993s [2] |
Declination | −05° 45′ 13.224″ [2] |
Apparent magnitude (V) | 6.208 [3] |
Characteristics | |
Spectral type | K3 V [3] |
U−B color index | +1.00 [4] |
B−V color index | +1.06 [4] |
Astrometry | |
Radial velocity (Rv) | +21.0 [5] km/s |
Proper motion (μ) | RA: 549.309(21) mas/yr [2] Dec.: −1,108.245(16) mas/yr [2] |
Parallax (π) | 113.0715 ± 0.0222 mas [2] |
Distance | 28.845 ± 0.006 ly (8.844 ± 0.002 pc) |
Absolute magnitude (MV) | 6.51 [6] |
Details | |
Mass | 0.838+0.034 −0.033 [7] M☉ |
Radius | 0.78+0.03 −0.02 [7] R☉ |
Surface gravity (log g) | 4.55 [3] cgs |
Temperature | 4,945±8.7 [8] K |
Metallicity [Fe/H] | 0.28 [3] dex |
Rotational velocity (v sin i) | 4.1 [9] km/s |
Age | 2 [10] or 4.5 [11] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
ARICNS | data |
HR 1614 (284 G. Eridani, GJ 183) is a star in the constellation Eridanus. Based upon parallax measurements, it is about 28.8 light-years (8.8 parsecs ) distant from the Earth. [2] It is a main sequence star with a stellar classification of K3V. [3] The chromosphere has an effective temperature of about 4,945 K, [8] which gives this star the orange hue characteristic of K-type stars. [12] It has about 84% of the Sun's mass and 78% of the Sun's radius. [7]
It is considered a metal-rich dwarf star, which means it displays an unusually high portion of elements heavier than helium in its spectrum. This metallicity is given in term of the ratio of iron to hydrogen, as compared to the Sun. In the case of HR 1614, this ratio is about 90% higher than the Sun. [13] The activity cycle for this star is 11.1 years in length. [14] Based upon gyrochronology, the estimated age of this star is 4.5 Gyr. [11]
This system is a member of a moving group of at least nine stars that share a common motion through space. The members of this group display the same abundance of heavy elements as does HR 1614, which may indicate a common origin for these stars. The space velocity of this group relative to the Sun is 59 km/s. [15] The estimated age of this group is 2 Gyr, suggesting a corresponding age for this star. [10]
HR 7703 is a binary star system in the constellation of Sagittarius. The brighter component has an apparent visual magnitude of 5.31, which means it is visible from suburban skies at night. The two stars are separated by an angle of 7.10″, which corresponds to an estimated semimajor axis of 56.30 AU for their orbit.
4 Arietis is a single star in the northern constellation of Aries, the ram. 4 Arietis is the Flamsteed designation. It is visible to the naked eye as a dim, blue-white hued star with an apparent visual magnitude of 5.86. The star has an annual parallax shift of 11.46±0.15 mas, which is equivalent to a distance of 285 light-years from the Sun. It is moving further from the Earth with a heliocentric radial velocity of +6 km/s.
Gliese 673 is an orange dwarf star in the constellation Ophiuchus. It has a stellar classification of K7V. Main sequence stars with this spectra have a mass in the range of 60–70% of solar mass (M☉).
41 G. Arae, also known as GJ 666, is a trinary star system in the constellation Ara 28.7 light-years from the Sun. Although often called just 41 Arae, it is more accurate to call it 41 G. Arae, as the number 41 is the Gould designation.
HR 511 is an orange dwarf of spectral type K0V in the constellation Cassiopeia. With an apparent magnitude of 5.63, it is faintly visible to the naked eye. The star is relatively close, 32.8 light years from the Sun.
HD 172051 is a single, yellow-hued star in the southern constellation of Sagittarius. The star is barely bright enough to be seen with the naked eye, having an apparent visual magnitude of 5.85. Based upon an annual parallax shift of 76.64 mas, it is located some 43 light years from the Sun. It is moving away from the Sun with a radial velocity of +37 km/s.
HD 102365 is a binary star system that is located in the northeastern part of the Centaurus constellation, at a distance of about 30.4 light-years from the Solar System. The larger member of the system is a G-type star that is smaller than the Sun but of similar mass. It has a common proper motion companion that was discovered by W. J. Luyten in 1960. This M-type star appears to be in a wide orbit around the primary at a current separation of about 211 astronomical units (AU),. By comparison, Neptune orbits at an average distance of 30 AU.
HR 4458 is a binary star system in the equatorial constellation of Hydra. It has the Gould designation 289 G. Hydrae; HR 4458 is the Bright Star Catalogue designation. At a distance of 31.13 light years, it is the closest star system to the Solar System within this constellation. This object is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.97. It is moving closer to the Earth with a heliocentric radial velocity of −22 km/s.
HD 81040 is a star in the equatorial constellation of Leo. With an apparent visual magnitude of +7.73 it is too dim to be visible to the naked eye but can be viewed with a small telescope. The star is located at a distance of 112 light years from the Sun based on parallax. It is drifting further away with a radial velocity of +49 km/s, having come to within 48 light-years some 527,000 years ago.
HD 47186 is a star with a pair of orbiting exoplanets in the southern constellation of Canis Major. The system is located at a distance of 122 light years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of 4.2 km/s. Although it has an absolute magnitude of 4.64, at the distance of this system the apparent visual magnitude is 7.63; too faint to be seen with the naked eye. It has a high proper motion, traversing the celestial sphere at an angular rate of 0.272″·yr−1.
HD 90089 is a star located in the northern circumpolar constellation Camelopardalis. With an apparent magnitude of 5.25, it is faintly visible to the naked eye under ideal conditions. This star is located relatively close at a distance of 75 light years, but is drifting away at a rate of almost 8 km/s.
4 Camelopardalis is a probable multiple star in the northern constellation of Camelopardalis, located 177 light years away from the Sun, based upon parallax. With a combined apparent visual magnitude of 5.29, it is visible to the naked eye as a faint, white-hued star. The pair have a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.158″ per year. The system's proper motion makes it a candidate for membership in the IC 2391 supercluster. They are moving away from the Earth with a heliocentric radial velocity of 22.5 km/s.
HD 60532 is a star with two orbiting exoplanets in the southern constellation of Puppis. The designation HD 60532 takes its name from the Henry Draper Catalogue. The system is located at a distance of 85.5 light years from the Sun, and is drifting further away with a radial velocity of 61 km/s. At that distance, the star has an apparent visual magnitude of 4.45, which is bright enough to be faintly visible to the naked eye. The motion of this system through space brought it within 10.3 light-years of the Sun some 408,600 years ago.
HIP 100963 is a G-type star in the faint northern constellation of Vulpecula resembling the Sun. It has an apparent visual magnitude of approximately 7.1, making it generally too faint to be seen with the naked eye in most circumstances. The distance to this star, as determined using parallax measurements from the Gaia spacecraft, is around 92 light-years.
68 Draconis is the Flamsteed designation for a star in the northern circumpolar constellation of Draco. It has an apparent visual magnitude of 5.69, so, according to the Bortle scale, it is faintly visible to the naked eye from suburban skies at night. Measurements made with the Gaia spacecraft show an annual parallax shift of 0.0209232″, which is equivalent to a distance of around 156 ly (48 pc) from the Sun. It is moving closer to the Earth with a heliocentric radial velocity of –14.6 km/s. The star has a relatively high proper motion, traversing the celestial sphere at a rate of 0.150″ per year.
HD 166066 is a solitary star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 8.10, making it readily visible in binoculars, but not to the naked eye. The object is located 223 light years away from the Solar System, but is drifting away with a poorly constrained radial velocity of about 2.93 km/s.
HD 96700 is the Henry Draper Catalogue designation for a star in the equatorial constellation of Hydra. It has an apparent visual magnitude of 6.51, which puts it below the limit that can be seen with the naked eye by a typical observer. Based upon parallax measurements, this star is around 83 light years away from the Sun. It is drifting further away with a radial velocity of 12.8 km/s.
HD 189245 is the Henry Draper catalogue designation for a solitary star in the southern constellation of Sagittarius. It has an apparent visual magnitude of 5.66, which means it is faintly visible to the naked eye. Parallax measurements from the Hipparcos satellite indicate a distance of 72 light years from the Sun. It is drifting closer with a heliocentric radial velocity of −13 km/s.
V1794 Cygni is a single variable star in the northern constellation Cygnus. It has the identifier HD 199178 from the Henry Draper Catalogue; V1794 Cygni is its variable star designation. With an apparent visual magnitude of 7.24, it's too dim to be visible with the naked eye but can be seen with binoculars. V1794 is located at a distance of 367 light-years (113 pc) based on parallax measurements, but is drifting closer to the Sun with a radial velocity of −31 km/s. It lies superimposed over a region of faint nebulosity to the west of the North American Nebula.
HD 27022, also known as HR 1327, is a star located in the northern circumpolar constellation Camelopardalis. The object has also been designated as 20 H. Camelopardalis, but is not commonly used in modern times. It has an apparent magnitude of 5.27, allowing it to be faintly visible to the naked eye. Based on parallax measurements from Gaia DR3, the star has been estimated to be 347 light years away. It appears to be approaching the Solar System, having a heliocentric radial velocity of −19.5 km/s.