Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lepus |
Right ascension | 05h 08m 01.0123s [1] |
Declination | −26° 47′ 50.8941″ [1] |
Apparent magnitude (V) | 8.05 [2] |
Characteristics | |
Spectral type | G3/5V [2] + M4–5 [3] |
B−V color index | 0.641±0.009 [2] |
Astrometry | |
Radial velocity (Rv) | +4.51±0.19 [2] km/s |
Proper motion (μ) |
RA: 56.184
[1]
mas/
yr Dec.: −46.058 [1] mas/ yr |
Parallax (π) | 11.0993 ± 0.0286 mas [1] |
Distance | 293.9 ± 0.8
ly (90.1 ± 0.2 pc) |
Absolute magnitude (MV) | 3.19 [2] |
Details | |
HD 33283 | |
Mass | 1.39±0.04 M☉
[4] 1.24±0.1 [5] M☉ |
Radius | 1.95±0.04 R☉
[4] 1.20±0.1 [5] R☉ |
Luminosity | 4.37±0.02 [4] L☉ |
Surface gravity (log g) | 3.99±0.03 [4] cgs |
Temperature | 5,985±57 [4] K |
Metallicity [Fe/H] | 0.35±0.08 [2] dex |
Rotational velocity (v sin i) | 1.09±0.26 [6] km/s |
Age | 3.6±0.6 [4] Gyr |
HD 33283 B | |
Mass | 0.17 [3] M☉ |
Other designations | |
Database references | |
SIMBAD | data |
HD 33283 is a star in the southern constellation Lepus with one planet and a co-moving stellar companion. [3] With an apparent visual magnitude of 8.05, [2] the star is too faint to be seen with the naked eye. It is located at a distance of 294 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +4.5. [2]
This is an ordinary G-type main-sequence star with a stellar classification of G3/5V. [2] It is about 3.6 billion years old and is chromospherically inactive. The star is spinning slowly with a projected rotational velocity of 1 km/s [6] and an estimated rotation period of about 55.5 days. [5] It is larger and more massive than the Sun. HD 33283 is radiating over four times the luminosity of the Sun from its photosphere at an effective temperature of 5,985 K. [4]
In 2014, a co-moving red dwarf companion star, HD 33283 B, of spectral class M4–M5 was detected at an angular separation of 55.7 ″, corresponding to a projected separation of 5,244 AU. [3]
In 2006, J. A. Johnson and associates found a jovian planet orbiting HD 33283 with the radial velocity method. [5] It is orbiting at a distance of 0.15 AU (22 Gm) from the host star with a period of 18.2 days and an eccentricity (ovalness) of 0.4. [8]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥0.329±0.071 MJ | 0.1508±0.0087 | 18.1991±0.0017 | 0.399±0.056 | — | — |
{{
cite web}}
: CS1 maint: postscript (
link)
Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Lepus |
Right ascension | 05h 08m 01.0123s [1] |
Declination | −26° 47′ 50.8941″ [1] |
Apparent magnitude (V) | 8.05 [2] |
Characteristics | |
Spectral type | G3/5V [2] + M4–5 [3] |
B−V color index | 0.641±0.009 [2] |
Astrometry | |
Radial velocity (Rv) | +4.51±0.19 [2] km/s |
Proper motion (μ) |
RA: 56.184
[1]
mas/
yr Dec.: −46.058 [1] mas/ yr |
Parallax (π) | 11.0993 ± 0.0286 mas [1] |
Distance | 293.9 ± 0.8
ly (90.1 ± 0.2 pc) |
Absolute magnitude (MV) | 3.19 [2] |
Details | |
HD 33283 | |
Mass | 1.39±0.04 M☉
[4] 1.24±0.1 [5] M☉ |
Radius | 1.95±0.04 R☉
[4] 1.20±0.1 [5] R☉ |
Luminosity | 4.37±0.02 [4] L☉ |
Surface gravity (log g) | 3.99±0.03 [4] cgs |
Temperature | 5,985±57 [4] K |
Metallicity [Fe/H] | 0.35±0.08 [2] dex |
Rotational velocity (v sin i) | 1.09±0.26 [6] km/s |
Age | 3.6±0.6 [4] Gyr |
HD 33283 B | |
Mass | 0.17 [3] M☉ |
Other designations | |
Database references | |
SIMBAD | data |
HD 33283 is a star in the southern constellation Lepus with one planet and a co-moving stellar companion. [3] With an apparent visual magnitude of 8.05, [2] the star is too faint to be seen with the naked eye. It is located at a distance of 294 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +4.5. [2]
This is an ordinary G-type main-sequence star with a stellar classification of G3/5V. [2] It is about 3.6 billion years old and is chromospherically inactive. The star is spinning slowly with a projected rotational velocity of 1 km/s [6] and an estimated rotation period of about 55.5 days. [5] It is larger and more massive than the Sun. HD 33283 is radiating over four times the luminosity of the Sun from its photosphere at an effective temperature of 5,985 K. [4]
In 2014, a co-moving red dwarf companion star, HD 33283 B, of spectral class M4–M5 was detected at an angular separation of 55.7 ″, corresponding to a projected separation of 5,244 AU. [3]
In 2006, J. A. Johnson and associates found a jovian planet orbiting HD 33283 with the radial velocity method. [5] It is orbiting at a distance of 0.15 AU (22 Gm) from the host star with a period of 18.2 days and an eccentricity (ovalness) of 0.4. [8]
Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | ≥0.329±0.071 MJ | 0.1508±0.0087 | 18.1991±0.0017 | 0.399±0.056 | — | — |
{{
cite web}}
: CS1 maint: postscript (
link)