HD 133600

Last updated
HD  133600
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Virgo
Right ascension 15h 05m 13.2482s [1]
Declination +06° 17′ 23.6916″ [1]
Apparent magnitude  (V)8.219 [2]
Characteristics
Spectral type G0 [2]
B−V color index 0.6 [2]
V−R color index 0.4 [2]
R−I color index 0.2 [2]
Astrometry
Proper motion (μ)RA: −3.728±0.085 [1]   mas/yr
Dec.: −246.535±0.089 [1]   mas/yr
Parallax (π)18.3157 ± 0.0506  mas [1]
Distance 178.1 ± 0.5  ly
(54.6 ± 0.2  pc)
Absolute magnitude  (MV)4.39 [3]
Details
Mass 1.00 ± 0.03 [4]   M☉
Radius 1.085  R☉
Luminosity (bolometric)1.21 ± 0.14 [4]   L☉
Luminosity (visual, LV)≳1.206  L☉
Surface gravity (log g)4.37±0.02 [5]   cgs
Temperature 5,788±6 [5]   K
Metallicity [Fe/H]+0.004±0.005 [5]   dex
Rotational velocity (v sin i)1.42±0.13 [5]  km/s
Age 6.57±0.46 [5]   Gyr
Other designations
BD+06 2987, GC  20290, HIP  73815, LTT  14484, NLTT  39253, PPM  161240, SAO  120828. [2]
Database references
SIMBAD data

HD 133600, also known as HIP 73815, is a G-type star in the constellation of Virgo. [2] It has an apparent visual magnitude of approximately 8.219m. [2] It is similar to the Sun and has been called a near solar twin, as it is 1.5 billion years older than the Sun. [6]

Its distance is 54.6 parsecs (178 light years) from the Sun. [1] Mass is within 3 percent of the Sun. [7]

Near solar twins can help us to understand solar activity such as solar flares and sunspot cycles over longer time periods than the historical records, and to put unique historical events such as the Maunder minimum in context. They can also be used to set the zero point of fundamental calibrations in astrophysics, and models of solar evolution. [7]

Near solar twins can also help answer whether the Sun is unique or not. It used to be thought that the Sun might be unique for its low lithium abundance. This star was one of two stars that were used in 2007 papers by Melendez & Ramırez [7] to show that the Sun was not unique in this respect as it has lithium abundance similar to the Sun, but is not an ideal comparison as HD 133600 is 1.5 billion years older than the Sun. Yet, this has made it a useful star for studies into the problem of the depleted lithium abundance at the solar surface compared with other stars, something that is not yet fully understood, and known as the Lithium depletion problem.

Related Research Articles

<span class="mw-page-title-main">18 Scorpii</span> Star in the constellation Scorpius

18 Scorpii is a solitary star located at a distance of some 46.1 light-years from the Sun at the northern edge of the Scorpius constellation. It has an apparent visual magnitude of 5.5, which is bright enough to be seen with the naked eye outside of urban areas. The star is drifting further away with a radial velocity of +11.6.

<span class="mw-page-title-main">Solar analog</span> Star that is particularly similar to the Sun

Solar-type star, solar analogs, and solar twins are stars that are particularly similar to the Sun. The stellar classification is a hierarchy with solar twin being most like the Sun followed by solar analog and then solar-type. Observations of these stars are important for understanding better the properties of the Sun in relation to other stars and the habitability of planets.

Lambda1 Tucanae is the Bayer designation for one member of a pair of stars sharing a common proper motion through space, which lie within the southern constellation of Tucana. As of 2013, the pair had an angular separation of 20.0 arc seconds along a position angle of 82°. Together, they are barely visible to the naked eye with a combined apparent visual magnitude of 6.21. Based upon an annual parallax shift for both stars of approximately 16.5 mas as seen from Earth, this system is located roughly 198 light years from the Sun.

HD 98618 is a yellow-hued star in the northern circumpolar constellation of Ursa Major. It is invisible to the naked eye, having an apparent visual magnitude of just 7.65. Based on measurements, this star is located at a distance of 135 light years from the Sun based on parallax, and is drifting further away with a radial velocity of +7.1 km/s. It is a likely member of the thin disk population and is orbiting the Milky Way at about the same distance from the Galactic Center as the Sun.

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 165259, also known as HR 6751 is a triple star system located in the southern circumpolar constellation of Apus. It has an apparent magnitude of 5.86, making it faintly visible to the naked eye Parallax measurements place the system at a distance of 138 light years, and it is currently receding with a heliocentric radial velocity of 13.1 km/s.

<span class="mw-page-title-main">HIP 56948</span> Sun-like star in the constellation Draco

HIP 56948 is a solar twin star of type G5V. It is one of the most Sun-like stars yet known in terms of size, mass, temperature, and chemical makeup. The Sun is about 4.6 billion years old, and HIP 56948 is believed to be about 7.1 billion years old. Both stars are between a third and a halfway through their life on the main sequence.

HD 9446 is a star located about 164 light-years away in the constellation of Triangulum, near the southwestern constellation border with Pisces. This object can be viewed with binoculars or a telescope, but it is too faint to be seen with the naked eye at its apparent visual magnitude of 8.35. It is drifting further away from the Sun with a radial velocity of +21 km/s.

HD 79498 is a primary of the star system located 159 light years away in the constellation Cancer. This G5 main sequence star has an apparent magnitude of 8.0 and is about the same size and mass as the Sun. It has a higher than solar abundance of elements other than hydrogen and helium; what astronomers term a metal-rich star.

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.

HD 122862 is a solitary star in the southern circumpolar constellation Apus. It has an apparent magnitude of 6.02, allowing it to be faintly seen with the naked eye under ideal conditions. The star is relatively close at a distance of 95 light years, but is approaching the Sun with a radial velocity of −21.11 km/s.

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 126053 is the Henry Draper Catalogue designation for a star in the equatorial constellation of Virgo. It has an apparent magnitude of 6.25, which means it is faintly visible to the naked eye. According to the Bortle scale, it requires dark suburban or rural skies to view. Parallax measurements made by the Hipparcos spacecraft provide an estimated distance of 57 light years to this star. It is drifting closer with a heliocentric radial velocity of −19.2 km/s.

HD 35759 is a high proper motion star located in the circumpolar constellation Camelopardalis. With an apparent magnitude of 7.74, it's impossible to see with the unaided eye, but can be seen with binoculars.

HD 42618 is a well-studied star with an exoplanetary companion in the equatorial constellation of Orion. With an apparent visual magnitude of 6.85 it is too faint to be readily visible to the naked eye. This system is located at a distance of 79.6 light years from the Sun based on parallax measurements. It has a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.321″ per year. HD 42618 is drifting closer with a radial velocity of −53.5 km/s and is predicted to come as near as 42.6 light-years in around 297,000 years.

<span class="mw-page-title-main">Nu Mensae</span> Star in the constellation of Mensa

Nu Mensae, Latinized from ν Mensae, is a solitary star situated in the southern circumpolar constellation Mensa. It has an apparent magnitude of 5.76, making it faintly visible to the naked eye. The star is relatively close at a distance of 176 light years but is receding with a heliocentric radial velocity of 9.1 km/s.

HD 31975 is a star situated in the southern circumpolar constellation Mensa. It has an apparent magnitude of 6.28, which is near the threshold of naked eye visibility. It is relatively close at a distance of about 106 light years but is receding with a heliocentric radial velocity of 26.9 km/s.

HD 194012 is a star in the equatorial constellation Delphinus. It has an apparent magnitude of 6.15, making it visible to the naked eye under ideal conditions. The star is relatively close at a distance of only 85 light years but is receding with a heliocentric radial velocity of 4.5 km/s.

HD 208741, also known as HR 8380, is a yellowish-white hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.91, making it faintly visible to the naked eye. Parallax measurements place it at a distance of 211 light years, and it is currently receding with a heliocentric radial velocity of 8 km/s.

HD 30669 is a yellowish-orange hued star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 9.11, 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. Its distance from the Solar System is rapidly increasing, having a heliocentric radial velocity of 66 km/s.

References

  1. 1 2 3 4 5 6 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.
  2. 1 2 3 4 5 6 7 8 "HD 133600". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved February 3, 2011.
  3. ↑ Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971 , Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID   119257644.
  4. 1 2 do Nascimento Jr, J. D; Castro, M; Melendez, J; Bazot, M; Theado, S; Porto de Mello, G. F; De Medeiros, J. R (2009). "Age and mass of solar twins constrained by lithium abundance". Astronomy & Astrophysics. 501 (2): 687. arXiv: 0904.3580 . Bibcode:2009A&A...501..687D. doi:10.1051/0004-6361/200911935. S2CID   9565600.
  5. 1 2 3 4 5 dos Santos, Leonardo A.; Meléndez, Jorge; Nascimento, José-Dias do; Bedell, Megan; Ramírez, Iván; Bean, Jacob L.; Asplund, Martin; Spina, Lorenzo; Dreizler, Stefan; Alves-Brito, Alan; Casagrande, Luca (24 August 2016). "The Solar Twin Planet Search. IV. The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars". Astronomy & Astrophysics. 592: A156. arXiv: 1606.06214 . Bibcode:2016A&A...592A.156D. doi:10.1051/0004-6361/201628558. S2CID   53533614.
  6. ↑ Ramírez, I.; Meléndez, J.; Asplund, M. (12 November 2009). "Accurate abundance patterns of solar twins and analogs". Astronomy & Astrophysics. 508 (1): L17–L20. Bibcode:2009A&A...508L..17R. doi: 10.1051/0004-6361/200913038 .
  7. 1 2 3 Meléndez, Jorge; Ramírez, Iván (10 November 2007). "HIP 56948: A Solar Twin with a Low Lithium Abundance". The Astrophysical Journal. 669 (2): L89–L92. arXiv: 0709.4290 . Bibcode:2007ApJ...669L..89M. doi:10.1086/523942. S2CID   15952981.
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