Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vela |
Right ascension | 10h 46m 15.116s [1] |
Declination | –41° 27′ 51.73″ [1] |
Apparent magnitude (V) | 7.486 [2] |
Characteristics | |
Spectral type | G2/G3 V [3] |
B−V color index | 0.595 [4] |
Astrometry | |
Radial velocity (Rv) | +47.80±0.61 [5] km/s |
Proper motion (μ) |
RA: −48.135
mas/
yr
[1] Dec.: −54.551 mas/ yr [1] |
Parallax (π) | 23.1489 ± 0.018 mas [1] |
Distance | 140.9 ± 0.1
ly (43.20 ± 0.03 pc) |
Details | |
Mass | 1.07 [4] M☉ |
Radius | 1.17 [6] R☉ |
Luminosity | 1.42 [6] L☉ |
Surface gravity (log g) | 4.08±0.11 [6] cgs |
Temperature | 5,823±35 [6] K |
Metallicity [Fe/H] | –0.05±0.03 [6] dex |
Age | 4.13 [4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 93385 is a star in the southern constellation of Vela. At an apparent visual magnitude of 7.5, [2] it is too faint to be seen with the unaided eye. Parallax measurements made using the Gaia spacecraft show an annual shift of 23.15 mas. This is equivalent to a physical separation of around 141 [1] light years from the Sun. It is drifting further away with a radial velocity of +47.8 km/s.
This is an ordinary G-type main sequence star with a stellar classification of G2/G3 V. [3] The physical properties of HD 93385 are similar to those of the Sun; it is slightly larger with 107% [4] of the Sun's mass, 117% of the radius, and 142% of the luminosity. The abundance of elements, other than hydrogen and helium, is nearly the same as in the Sun. [6] It is currently at an unusual low level of surface activity and thus is a candidate Maunder minimum analog. [4]
A physical companion star with an apparent visual magnitude of 12.29 is located at an angular separation of 10.32 arcseconds (equivalent to projected separation of 448 AU) along a position angle of 288°. It is estimated to have 45% of the mass of the Sun. [8] A 2015 survey ruled out the existence of any additional stellar companions at projected distances from 12 to 352 astronomical units. [9]
This star hosts two close-orbiting, super-Earth-like planets, suspected since 2011 and confirmed in 2021. [10] [11] The first has 8.3 times the mass of the Earth and an orbital period of 13.186 days. The second is 10.1 times the Earth's mass with a period of 46.025 days. [12] A third planet on an innermost orbit was discovered in 2017 [13] and confirmed in 2021. [11]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥4.2±0.5 M🜨 | 0.0756±0.0013 | 7.3426±0.0012 | <0.295 | — | — |
c | ≥7.1±0.6 M🜨 | 0.112±0.002 | 13.180±0.003 | <0.20 | — | — |
d | ≥8.7±0.9 M🜨 | 0.2565±0.0043 | 45.85±0.05 | 0.09+0.15 −0.05 |
— | — |
{{
cite web}}
: CS1 maint: postscript (
link)
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Vela |
Right ascension | 10h 46m 15.116s [1] |
Declination | –41° 27′ 51.73″ [1] |
Apparent magnitude (V) | 7.486 [2] |
Characteristics | |
Spectral type | G2/G3 V [3] |
B−V color index | 0.595 [4] |
Astrometry | |
Radial velocity (Rv) | +47.80±0.61 [5] km/s |
Proper motion (μ) |
RA: −48.135
mas/
yr
[1] Dec.: −54.551 mas/ yr [1] |
Parallax (π) | 23.1489 ± 0.018 mas [1] |
Distance | 140.9 ± 0.1
ly (43.20 ± 0.03 pc) |
Details | |
Mass | 1.07 [4] M☉ |
Radius | 1.17 [6] R☉ |
Luminosity | 1.42 [6] L☉ |
Surface gravity (log g) | 4.08±0.11 [6] cgs |
Temperature | 5,823±35 [6] K |
Metallicity [Fe/H] | –0.05±0.03 [6] dex |
Age | 4.13 [4] Gyr |
Other designations | |
Database references | |
SIMBAD | data |
HD 93385 is a star in the southern constellation of Vela. At an apparent visual magnitude of 7.5, [2] it is too faint to be seen with the unaided eye. Parallax measurements made using the Gaia spacecraft show an annual shift of 23.15 mas. This is equivalent to a physical separation of around 141 [1] light years from the Sun. It is drifting further away with a radial velocity of +47.8 km/s.
This is an ordinary G-type main sequence star with a stellar classification of G2/G3 V. [3] The physical properties of HD 93385 are similar to those of the Sun; it is slightly larger with 107% [4] of the Sun's mass, 117% of the radius, and 142% of the luminosity. The abundance of elements, other than hydrogen and helium, is nearly the same as in the Sun. [6] It is currently at an unusual low level of surface activity and thus is a candidate Maunder minimum analog. [4]
A physical companion star with an apparent visual magnitude of 12.29 is located at an angular separation of 10.32 arcseconds (equivalent to projected separation of 448 AU) along a position angle of 288°. It is estimated to have 45% of the mass of the Sun. [8] A 2015 survey ruled out the existence of any additional stellar companions at projected distances from 12 to 352 astronomical units. [9]
This star hosts two close-orbiting, super-Earth-like planets, suspected since 2011 and confirmed in 2021. [10] [11] The first has 8.3 times the mass of the Earth and an orbital period of 13.186 days. The second is 10.1 times the Earth's mass with a period of 46.025 days. [12] A third planet on an innermost orbit was discovered in 2017 [13] and confirmed in 2021. [11]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥4.2±0.5 M🜨 | 0.0756±0.0013 | 7.3426±0.0012 | <0.295 | — | — |
c | ≥7.1±0.6 M🜨 | 0.112±0.002 | 13.180±0.003 | <0.20 | — | — |
d | ≥8.7±0.9 M🜨 | 0.2565±0.0043 | 45.85±0.05 | 0.09+0.15 −0.05 |
— | — |
{{
cite web}}
: CS1 maint: postscript (
link)