| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Caelum |
| Right ascension | 04h 48m 28.48538s [1] |
| Declination | −28° 25′ 09.4617″ [1] |
| Apparent magnitude (V) | 9.11±0.01 [2] |
| Characteristics | |
| Spectral type | G8/K0 V [3] |
| B−V color index | +0.82 [2] |
| Astrometry | |
| Radial velocity (Rv) | 65.7±0.4 [4] km/s |
| Proper motion (μ) |
RA: +237.591
mas/
yr
[1] Dec.: +50.927 mas/ yr [1] |
| Parallax (π) | 17.2896 ± 0.0127 mas |
| Distance | 188.6 ± 0.1
ly (57.84 ± 0.04 pc) |
| Absolute magnitude (MV) | +5.35 [5] |
| Details | |
| Mass | 0.92±0.03 [6] M☉ |
| Radius | 0.91±0.04 [7] R☉ |
| Luminosity | 59.7% [8] L☉ |
| Surface gravity (log g) | 4.43±0.06 [9] cgs |
| Temperature | 5,353±100 [9] K |
| Metallicity [Fe/H] | +0.13 [10] dex |
| Rotational velocity (v sin i) | <1.7 [7] km/s |
| Age | 7.25±4.64 [11] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 30669 is a yellowish-orange hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 9.11, [2] making it readily visible in small telescopes but not to the naked eye. The object is relatively close at a distance of 188 light years, based on parallax measurements from Gaia DR3. [1] Its distance from the Solar System is rapidly increasing, having a heliocentric radial velocity of 66 km/s. [4]
HD 30669 has a stellar classification of G8/K0 V [3] — a main sequence star with the characteristics of a star with a class of G8 and K0. It has alternatively been given a class of G9 V. It has 92% the mass of the Sun [6] and 91% its radius. [7] The object radiates 59.7% the luminosity of the Sun [8] from its photosphere at an effective temperature of 5,353 K [9] from its photosphere. Like most planetary hosts, HD 30669 is metal enriched, having a metallicity 35% above solar levels. [10] The star is extremely chromopsherically inactive and is estimated to be 7+1⁄4 billion years old. [11]
In 2015, C. Motou and colleagues discovered a long period exoplanet orbiting the star during a HARPS survey. It has nearly half the mass of Jupiter and it takes over 4+1⁄2 years to revolve HD 30669 in a slightly eccentric orbit. [7]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.47±0.06 MJ | 2.69±0.08 | 4.614±0.167 | 0.18±0.15 | — | — |
- ^ a b c d 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN 0004-6361.
- ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars III: Declinations −40° to −26°. Bibcode: 1982mcts.book.....H.
- ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
- ^ a b Gomes da Silva, J.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Campante, T. L.; Figueira, P.; Bossini, D.; Delgado-Mena, E.; Monteiro, M. J. P. F. G.; de Laverny, P.; Recio-Blanco, A.; Lovis, C. (February 2021). "Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample". Astronomy & Astrophysics. 646: A77. arXiv: 2012.10199. Bibcode: 2021A&A...646A..77G. doi: 10.1051/0004-6361/202039765. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b c d e Moutou, C.; Lo Curto, G.; Mayor, M.; Bouchy, F.; Benz, W.; Lovis, C.; Naef, D.; Pepe, F.; Queloz, D.; Santos, N. C.; Ségransan, D.; Sousa, S. G.; Udry, S. (26 March 2015). "The HARPS search for southern extra-solar planets". Astronomy & Astrophysics. 576: A48. arXiv: 1412.6591. Bibcode: 2015A&A...576A..48M. doi: 10.1051/0004-6361/201424965. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv: astro-ph/0405198. Bibcode: 2004A&A...418..989N. doi: 10.1051/0004-6361:20035959. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b c Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: A55. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Mortier, A.; Santos, N. C.; Sousa, S.; Israelian, G.; Mayor, M.; Udry, S. (March 2013). "On the functional form of the metallicity-giant planet correlation". Astronomy & Astrophysics. 551: A112. arXiv: 1302.1851. Bibcode: 2013A&A...551A.112M. doi: 10.1051/0004-6361/201220707. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Pace, G. (22 February 2013). "Chromospheric activity as age indicator". Astronomy & Astrophysics. 551: L8. arXiv: 1301.5651. Bibcode: 2013A&A...551L...8P. doi: 10.1051/0004-6361/201220364. eISSN 1432-0746. ISSN 0004-6361.
- ^ "HD 30669". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 September 2019.
| Observation data Epoch J2000.0 Equinox J2000.0 ( ICRS) | |
|---|---|
| Constellation | Caelum |
| Right ascension | 04h 48m 28.48538s [1] |
| Declination | −28° 25′ 09.4617″ [1] |
| Apparent magnitude (V) | 9.11±0.01 [2] |
| Characteristics | |
| Spectral type | G8/K0 V [3] |
| B−V color index | +0.82 [2] |
| Astrometry | |
| Radial velocity (Rv) | 65.7±0.4 [4] km/s |
| Proper motion (μ) |
RA: +237.591
mas/
yr
[1] Dec.: +50.927 mas/ yr [1] |
| Parallax (π) | 17.2896 ± 0.0127 mas |
| Distance | 188.6 ± 0.1
ly (57.84 ± 0.04 pc) |
| Absolute magnitude (MV) | +5.35 [5] |
| Details | |
| Mass | 0.92±0.03 [6] M☉ |
| Radius | 0.91±0.04 [7] R☉ |
| Luminosity | 59.7% [8] L☉ |
| Surface gravity (log g) | 4.43±0.06 [9] cgs |
| Temperature | 5,353±100 [9] K |
| Metallicity [Fe/H] | +0.13 [10] dex |
| Rotational velocity (v sin i) | <1.7 [7] km/s |
| Age | 7.25±4.64 [11] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 30669 is a yellowish-orange hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 9.11, [2] making it readily visible in small telescopes but not to the naked eye. The object is relatively close at a distance of 188 light years, based on parallax measurements from Gaia DR3. [1] Its distance from the Solar System is rapidly increasing, having a heliocentric radial velocity of 66 km/s. [4]
HD 30669 has a stellar classification of G8/K0 V [3] — a main sequence star with the characteristics of a star with a class of G8 and K0. It has alternatively been given a class of G9 V. It has 92% the mass of the Sun [6] and 91% its radius. [7] The object radiates 59.7% the luminosity of the Sun [8] from its photosphere at an effective temperature of 5,353 K [9] from its photosphere. Like most planetary hosts, HD 30669 is metal enriched, having a metallicity 35% above solar levels. [10] The star is extremely chromopsherically inactive and is estimated to be 7+1⁄4 billion years old. [11]
In 2015, C. Motou and colleagues discovered a long period exoplanet orbiting the star during a HARPS survey. It has nearly half the mass of Jupiter and it takes over 4+1⁄2 years to revolve HD 30669 in a slightly eccentric orbit. [7]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( years) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.47±0.06 MJ | 2.69±0.08 | 4.614±0.167 | 0.18±0.15 | — | — |
- ^ a b c d 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode: 2000A&A...355L..27H. ISSN 0004-6361.
- ^ a b Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars III: Declinations −40° to −26°. Bibcode: 1982mcts.book.....H.
- ^ a b Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv: 1606.08053. Bibcode: 2006AstL...32..759G. doi: 10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971. Bibcode: 2012AstL...38..331A. doi: 10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
- ^ a b Gomes da Silva, J.; Santos, N. C.; Adibekyan, V.; Sousa, S. G.; Campante, T. L.; Figueira, P.; Bossini, D.; Delgado-Mena, E.; Monteiro, M. J. P. F. G.; de Laverny, P.; Recio-Blanco, A.; Lovis, C. (February 2021). "Stellar chromospheric activity of 1674 FGK stars from the AMBRE-HARPS sample". Astronomy & Astrophysics. 646: A77. arXiv: 2012.10199. Bibcode: 2021A&A...646A..77G. doi: 10.1051/0004-6361/202039765. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b c d e Moutou, C.; Lo Curto, G.; Mayor, M.; Bouchy, F.; Benz, W.; Lovis, C.; Naef, D.; Pepe, F.; Queloz, D.; Santos, N. C.; Ségransan, D.; Sousa, S. G.; Udry, S. (26 March 2015). "The HARPS search for southern extra-solar planets". Astronomy & Astrophysics. 576: A48. arXiv: 1412.6591. Bibcode: 2015A&A...576A..48M. doi: 10.1051/0004-6361/201424965. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (16 April 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv: astro-ph/0405198. Bibcode: 2004A&A...418..989N. doi: 10.1051/0004-6361:20035959. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b c Aguilera-Gómez, Claudia; Ramírez, Iván; Chanamé, Julio (June 2018). "Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert". Astronomy & Astrophysics. 614: A55. arXiv: 1803.05922. Bibcode: 2018A&A...614A..55A. doi: 10.1051/0004-6361/201732209. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Mortier, A.; Santos, N. C.; Sousa, S.; Israelian, G.; Mayor, M.; Udry, S. (March 2013). "On the functional form of the metallicity-giant planet correlation". Astronomy & Astrophysics. 551: A112. arXiv: 1302.1851. Bibcode: 2013A&A...551A.112M. doi: 10.1051/0004-6361/201220707. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b Pace, G. (22 February 2013). "Chromospheric activity as age indicator". Astronomy & Astrophysics. 551: L8. arXiv: 1301.5651. Bibcode: 2013A&A...551L...8P. doi: 10.1051/0004-6361/201220364. eISSN 1432-0746. ISSN 0004-6361.
- ^ "HD 30669". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 September 2019.