| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sculptor |
| HD 4113 A | |
| Right ascension | 00h 43m 12.59559s [1] |
| Declination | −37° 58′ 57.4777″ [1] |
| Apparent magnitude (V) | 7.880±0.013 [2] |
| HD 4113 B | |
| Right ascension | 00h 43m 11.89423s [3] |
| Declination | −37° 58′ 09.1687″ [3] |
| Apparent magnitude (V) | 12.70±0.02 [2] |
| Characteristics | |
| Spectral type | G5V and M0–1V [2] |
| B−V color index | 0.716±0.003 [2] |
| Astrometry | |
| HD 4113 A | |
| Radial velocity (Rv) | 5.05±0.12 [1] km/s |
| Proper motion (μ) |
RA: 49.412±0.016
mas/
yr
[1] Dec.: −114.290±0.024 mas/ yr [1] |
| Parallax (π) | 23.8256 ± 0.0240 mas [1] |
| Distance | 136.9 ± 0.1
ly (41.97 ± 0.04 pc) |
| Absolute magnitude (MV) | 4.780±0.046 [2] |
| HD 4113 B | |
| Radial velocity (Rv) | 4.44±0.39 [3] km/s |
| Proper motion (μ) |
RA: 53.733±0.022
mas/
yr
[3] Dec.: −113.983±0.032 mas/ yr [3] |
| Parallax (π) | 23.9023 ± 0.0327 mas [3] |
| Distance | 136.5 ± 0.2
ly (41.84 ± 0.06 pc) |
| Absolute magnitude (MV) | 9.600±0.049 [2] |
| Orbit [4] | |
| Companion | HD 4113 C |
| Period (P) | 348.325+21.932 −15.139 yr |
| Semi-major axis (a) | 50.438+2.060 −1.420 AU |
| Eccentricity (e) | 0.648+0.008 −0.007 |
| Inclination (i) | 83.456+2.342 −1.269° |
| Longitude of the node (Ω) | 225.686+0.704 −1.486° |
| Periastron epoch (T) | 2324305.035+127045.323 −7894.349 |
|
Argument of periastron (ω) (secondary) | 249.665+3.552 −4.805° |
|
Semi-amplitude (K1) (primary) | 0.263535+0.002058 −0.003037 km/s |
| Details [5] | |
| A | |
| Mass | 1.02+0.02 −0.03 M☉ |
| Radius | 1.08+0.02 −0.04 [6] R☉ |
| Luminosity | 1.085+0.04 −0.03 [6] L☉ |
| Surface gravity (log g) | 4.31±0.04 cgs |
| Temperature | 5,638±50 K |
| Metallicity [Fe/H] | 0.20±0.04 dex |
| Rotational velocity (v sin i) | 2.324 [2] km/s |
| Age | 7.29+1.91 −1.46 or 5.0+1.3 −1.7 [2] Gyr |
| B | |
| Mass | 0.55 [2] M☉ |
| Surface gravity (log g) | 4.76 [2] cgs |
| Temperature | 3,833 [2] K |
| C | |
| Mass | 51.913+0.604 −0.458 [4] MJup |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 4113 is a dual star system in the southern constellation of Sculptor. It is too faint to be viewed with the naked eye, having an apparent visual magnitude of 7.88. [2] The distance to this star, as estimated by parallax measurements, is 137 light years. [1] It is receding away from the Sun with a radial velocity of +5 km/s. [1]
The primary member of this system, component A, is a Sun-like G-type main-sequence star with a stellar classification of G5V. [2] Estimates of its age are five [2] to seven [5] billion years old, and it is spinning with a leisurely projected rotational velocity of 2.3 km/s. [2] The star is metal rich, with nearly the same mass, [5] radius, and luminosity [6] as the Sun.
Orbiting this star is a giant planet and a brown dwarf (HD 4113 C); the latter has been directly imaged. It also has a co-moving stellar companion, designated component B, which is a red dwarf with a class of M0–1V at an angular separation of 43 ″. This angle is equivalent to a projected separation of 2,000 AU. [2]
The most recent parameters for HD 4113 C as of 2022 come from a combination of data from radial velocity, astrometry, and imaging, showing that it is about 52 times the mass of Jupiter, and on an eccentric orbit with a semi-major axis of about 50.4 AU and an orbital period of about 348 years. [4]
On 26 October 2007, Tamuz et al. used the radial velocity method to find a planet with a minimum mass one and half times that of Jupiter orbiting at 1.28 AU away from HD 4113 A. The planet's orbit is highly eccentric. [8]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.703+0.040 −0.059 MJ |
1.280±0.004 | 1.442+0.0002 −0.0001 |
0.899+0.004 −0.003 |
— | — |
- ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e f g h i j k l m n o p Cheetham, A.; et al. (June 2018). "Direct imaging of an ultracool substellar companion to the exoplanet host star HD 4113 A". Astronomy & Astrophysics. 614: 19. arXiv: 1712.05217. Bibcode: 2018A&A...614A..16C. doi: 10.1051/0004-6361/201630136. S2CID 119084543. A16.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv: 2208.12720. Bibcode: 2022ApJS..262...21F. doi: 10.3847/1538-4365/ac7e57. S2CID 251864022.
- ^ a b c Aguilera-Gómez, Claudia; et al. (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: 15. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. S2CID 62799777. A55.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ "HD 4113". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-04.
- ^ Tamuz, O.; et al. (2008). "The CORALIE survey for southern extra-solar planets XV. Discovery of two eccentric planets orbiting HD 4113 and HD 156846". Astronomy and Astrophysics. 480 (3): L33–L36. arXiv: 0710.5028. Bibcode: 2008A&A...480L..33T. doi: 10.1051/0004-6361:20078737. S2CID 11350536.
- "Notes for star HD 4113". Extrasolar Planets Encyclopaedia. Archived from the original on November 6, 2007. Retrieved 2008-08-24.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sculptor |
| HD 4113 A | |
| Right ascension | 00h 43m 12.59559s [1] |
| Declination | −37° 58′ 57.4777″ [1] |
| Apparent magnitude (V) | 7.880±0.013 [2] |
| HD 4113 B | |
| Right ascension | 00h 43m 11.89423s [3] |
| Declination | −37° 58′ 09.1687″ [3] |
| Apparent magnitude (V) | 12.70±0.02 [2] |
| Characteristics | |
| Spectral type | G5V and M0–1V [2] |
| B−V color index | 0.716±0.003 [2] |
| Astrometry | |
| HD 4113 A | |
| Radial velocity (Rv) | 5.05±0.12 [1] km/s |
| Proper motion (μ) |
RA: 49.412±0.016
mas/
yr
[1] Dec.: −114.290±0.024 mas/ yr [1] |
| Parallax (π) | 23.8256 ± 0.0240 mas [1] |
| Distance | 136.9 ± 0.1
ly (41.97 ± 0.04 pc) |
| Absolute magnitude (MV) | 4.780±0.046 [2] |
| HD 4113 B | |
| Radial velocity (Rv) | 4.44±0.39 [3] km/s |
| Proper motion (μ) |
RA: 53.733±0.022
mas/
yr
[3] Dec.: −113.983±0.032 mas/ yr [3] |
| Parallax (π) | 23.9023 ± 0.0327 mas [3] |
| Distance | 136.5 ± 0.2
ly (41.84 ± 0.06 pc) |
| Absolute magnitude (MV) | 9.600±0.049 [2] |
| Orbit [4] | |
| Companion | HD 4113 C |
| Period (P) | 348.325+21.932 −15.139 yr |
| Semi-major axis (a) | 50.438+2.060 −1.420 AU |
| Eccentricity (e) | 0.648+0.008 −0.007 |
| Inclination (i) | 83.456+2.342 −1.269° |
| Longitude of the node (Ω) | 225.686+0.704 −1.486° |
| Periastron epoch (T) | 2324305.035+127045.323 −7894.349 |
|
Argument of periastron (ω) (secondary) | 249.665+3.552 −4.805° |
|
Semi-amplitude (K1) (primary) | 0.263535+0.002058 −0.003037 km/s |
| Details [5] | |
| A | |
| Mass | 1.02+0.02 −0.03 M☉ |
| Radius | 1.08+0.02 −0.04 [6] R☉ |
| Luminosity | 1.085+0.04 −0.03 [6] L☉ |
| Surface gravity (log g) | 4.31±0.04 cgs |
| Temperature | 5,638±50 K |
| Metallicity [Fe/H] | 0.20±0.04 dex |
| Rotational velocity (v sin i) | 2.324 [2] km/s |
| Age | 7.29+1.91 −1.46 or 5.0+1.3 −1.7 [2] Gyr |
| B | |
| Mass | 0.55 [2] M☉ |
| Surface gravity (log g) | 4.76 [2] cgs |
| Temperature | 3,833 [2] K |
| C | |
| Mass | 51.913+0.604 −0.458 [4] MJup |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 4113 is a dual star system in the southern constellation of Sculptor. It is too faint to be viewed with the naked eye, having an apparent visual magnitude of 7.88. [2] The distance to this star, as estimated by parallax measurements, is 137 light years. [1] It is receding away from the Sun with a radial velocity of +5 km/s. [1]
The primary member of this system, component A, is a Sun-like G-type main-sequence star with a stellar classification of G5V. [2] Estimates of its age are five [2] to seven [5] billion years old, and it is spinning with a leisurely projected rotational velocity of 2.3 km/s. [2] The star is metal rich, with nearly the same mass, [5] radius, and luminosity [6] as the Sun.
Orbiting this star is a giant planet and a brown dwarf (HD 4113 C); the latter has been directly imaged. It also has a co-moving stellar companion, designated component B, which is a red dwarf with a class of M0–1V at an angular separation of 43 ″. This angle is equivalent to a projected separation of 2,000 AU. [2]
The most recent parameters for HD 4113 C as of 2022 come from a combination of data from radial velocity, astrometry, and imaging, showing that it is about 52 times the mass of Jupiter, and on an eccentric orbit with a semi-major axis of about 50.4 AU and an orbital period of about 348 years. [4]
On 26 October 2007, Tamuz et al. used the radial velocity method to find a planet with a minimum mass one and half times that of Jupiter orbiting at 1.28 AU away from HD 4113 A. The planet's orbit is highly eccentric. [8]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥1.703+0.040 −0.059 MJ |
1.280±0.004 | 1.442+0.0002 −0.0001 |
0.899+0.004 −0.003 |
— | — |
- ^ a b c d e f g Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d e f g h i j k l m n o p Cheetham, A.; et al. (June 2018). "Direct imaging of an ultracool substellar companion to the exoplanet host star HD 4113 A". Astronomy & Astrophysics. 614: 19. arXiv: 1712.05217. Bibcode: 2018A&A...614A..16C. doi: 10.1051/0004-6361/201630136. S2CID 119084543. A16.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv: 2208.00211. Bibcode: 2023A&A...674A...1G. doi: 10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ a b c d Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv: 2208.12720. Bibcode: 2022ApJS..262...21F. doi: 10.3847/1538-4365/ac7e57. S2CID 251864022.
- ^ a b c Aguilera-Gómez, Claudia; et al. (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: 15. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. S2CID 62799777. A55.
- ^ a b c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv: 1804.09365. Bibcode: 2018A&A...616A...1G. doi: 10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ "HD 4113". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-11-04.
- ^ Tamuz, O.; et al. (2008). "The CORALIE survey for southern extra-solar planets XV. Discovery of two eccentric planets orbiting HD 4113 and HD 156846". Astronomy and Astrophysics. 480 (3): L33–L36. arXiv: 0710.5028. Bibcode: 2008A&A...480L..33T. doi: 10.1051/0004-6361:20078737. S2CID 11350536.
- "Notes for star HD 4113". Extrasolar Planets Encyclopaedia. Archived from the original on November 6, 2007. Retrieved 2008-08-24.