| b-v = +0.68[3]
| u-b = +0.17[3]
}}{{Starbox astrometry
| prop_mo_ra =
| prop_mo_dec =
| parallax = 37.54
| p_error = 0.50
| parallax_footnote = [1]
| absmag_v =
}}{{Starbox detail
| mass = 1.020{{cn|date=September 2016}}
| radius =
| gravity = {{Val|4.40|0.02}}[8]
| temperature = {{Val|5715|5|fmt=commas}}[8]
| metal_fe = {{Val|−0.086|0.004}}[8]
| rotational_velocity={{Val|1.43|0.12}}[8]
| age_gyr = {{Val|7.53|0.58}}[8]
}}{{Starbox catalog
| names = CD−45°10847, HD 150248, HIP 81746
}}{{Starbox reference
| Simbad = HD+150248
| EPE =
| ARICNS =
}}{{Starbox end}}HD 150248 is a Sun-like star 87 Light-years (26.6 parsecs) from the Sun. HD 150248 is a G-type star and a near solar twin.[8] HD 150248's photometric color is also very close to that of the Sun; however, it has a lower abundance of metals, and has an apparent visual magnitude of 7.02. At 6.2 billion years old, this star is 1.6 billion years older than our Sun and has passed the stable burning stage.{{cn|date=October 2016}} HD 150248 is found on the border between the constellations Scorpius and Ara.
To date, no solar twin with an exact match to that of the Sun has been found. However, there are some stars that come very close to being identical, and thus considered solar twins by the majority of the public.{{weasel-inline|What does the public know about stellar classification? Scientific consensus is more pertinent here.|date=November 2016}} An exact solar twin would be a G2V star with a 5,778K temperature, be 4.6 billion years old, with solar metallicity, and a 0.1% solar luminosity variation.[1] Stars with an age of 4.6 billion years, such as our Sun, are at the most stable state. Proper metallicity and size are also very important to low luminosity variation. [2][3][4]
Comparison to the Sun
| Identifier | J2000 Coordinates | Distance
(ly) | Stellar
Type | Temperature
(K) | Metallicity
(dex) | Age
(Gyr) | Notes |
|---|
| Right ascension | Declination |
|---|
| Sun | — | — | 0.00 | G2V | 5,778 | +0.00 | 4.6 | [5] |
| {{CelestialRefAll|HD 150248}} | 16|41|49.8}} | –45|22|07}} | 88 | G3V | 5,723 | −0.04 | 6.2 | [19] |
See also
References
1. ^[https://science.nasa.gov/science-news/science-at-nasa/2013/08jan_sunclimate/ NASA, Science News, Solar Variability and Terrestrial Climate, Jan. 8, 2013]
2. ^University of Nebraska-Lincoln astronomy education group, Stellar Luminosity Calculator
3. ^National Center for Atmospheric Research, The Effects of Solar Variability on Earth's Climate, 2012 Report
4. ^Most of Earth’s twins aren’t identical, by Ethan on June 5, 2013
5. ^{{cite web |last=Williams |first=D.R. |url=http://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html |title=Sun Fact Sheet |publisher=NASA |year=2004 |accessdate=2009-06-23 }}
6. ^1 2 3 {{cite journal|bibcode=1965MNRAS.131...95P|title=Radial velocities and three-colour photometry of 166 southern stars|journal=Monthly Notices of the Royal Astronomical Society|volume=131|pages=95|author1=Przybylski|first1=A.|last2=Kennedy|first2=P. M.|year=1965|doi=10.1093/mnras/131.1.95}}
7. ^1 {{cite journal | title=A photometric and spectroscopic survey of solar twin stars within 50 parsecs of the Sun; I. Atmospheric parameters and color similarity to the Sun | author=Porto de Mello, G. F.; da Silva, R.; da Silva, L.; de Nader, R. V. |lastauthoramp=yes | journal=Astronomy and Astrophysics | volume=563 | page=A52 | date=March 2014 | doi=10.1051/0004-6361/201322277 | bibcode= 2014A&A...563A..52P|arxiv = 1312.7571 }}
8. ^1 2 3 {{cite journal|bibcode=2007A&A...474..653V|title=Validation of the new Hipparcos reduction|journal=Astronomy and Astrophysics|volume=474|issue=2|pages=653|author1=Van Leeuwen|first1=F.|year=2007|doi=10.1051/0004-6361:20078357|arxiv = 0708.1752 }}
9. ^1 2 3 4 5 6 {{citation | title=The Solar Twin Planet Search. IV. The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars | display-authors=1 | last1=dos Santos | first1=Leonardo A. | last2=Meléndez | first2=Jorge | last3=do Nascimento | first3=José-Dias | last4=Bedell | first4=Megan | last5=Ramírez | first5=Iván | last6=Bean | first6=Jacob L. | last7=Asplund | first7=Martin | last8=Spina | first8=Lorenzo | last9=Dreizler | first9=Stefan | last10=Alves-Brito | first10=Alan | last11=Casagrande | first11=Luca | journal=Astronomy & Astrophysics | postscript=. | volume=592 | id=A156 | pages=8 | date=August 2016 | doi=10.1051/0004-6361/201628558 | bibcode=2016A&A...592A.156D |arxiv = 1606.06214 }}