HD 40307: Verskil tussen weergawes
Content deleted Content added
Addbot (besprekings | bydraes) |
kassie |
||
Lyn 1:
{{Inligtingskas ster
|
|
▲|beeld = Location of HD 40307.png
| bayernaam=
▲|beeld_onderskrif = Die ligging van HD 40307 in die ruimte (met ’n rooi pyltjie aangedui).
| magnitude=
| skynmagnitude= 7,17
| absolute magnitude=
▲|1 = [[Skilder (sterrebeeld)|Skilder]]
| massa= 0,75
| radius= 0,716
▲|2 = 05<sup>h</sup> 45<sup>m</sup> 04,2409<sup>s</sup>
| ligsterkte= 0,23
| spektraaltipe= K2,5V
▲|3 = −60° 01′ 24.498″
| temperatuur= 4 977
|
| veranderlik=
| veelvoudig=
| planete= 6
▲|15 = 1,2 × 10<sup>9</sup> jaar
▲|20 = CD−60 1303, CPD−60 508, GC 7474, GJ 2046, HIP 27887, PPM 355061, SAO 249388
}}
'''HD 40307''' is ’n oranje [[Sterreklassifikasie|K-tipe]] [[hoofreeksster]] sowat 42 [[ligjare]] (12,83 [[parsek]]) van die [[Aarde]] af in die [[sterrebeeld]] [[Skilder (sterrebeeld)|Skilder]]. Sy massa is na raming effens minder as dié van die [[Son]]. Die ster het sover bekend ses planete wat om hom wentel. Drie planete is in 2008 ontdek en nog drie in 2012. Een van hulle, HD 40307 g, is ’n planeet soortgelyk aan die Aarde met ’n wentelperiode van sowat 200 dae en kan dalk vloeibare water op sy oppervlak hê. Nog navorsing is nodig om vas te stel of dit lewe kan huisves.<ref name="latimes-nov12">[http://www.latimes.com/news/science/sciencenow/la-sci-sn-earthlike-planet-water-atmosphere-red-light-20121107,0,2600859.story Possible Earth-like planet could hold water; scientists cautious], Amina Khan, Los Angeles Times, 7 November 2012. URL besoek op 8 November 2012.</ref><ref name="tuomi12">{{cite arXiv |last= Tuomi, Anglada-Escude, Gerlach, Jones, Reiners, Rivera, Vogt, Butler|first= Mikko, Guillem, Enrico, Hugh R. R., Ansgar, Eugenio J., Steven S., R. Paul|authorlink= |eprint= 1211.1617|title= Habitable-zone super-Earth candidate in a six-planet system around the K2.5V star HD 40307|class= astro-ph|year= 2012|version= v1|accessdate= 8 November 2012}}</ref><ref name="Space-20121107a">{{cite web |last=Wall |first=Mike |title='Super-Earth' Alien Planet May Be Habitable for Life |url=http://www.space.com/18393-alien-planet-super-earth-habitable-hd-40307g.html |date=7 November 2012 |publisher=Space.com |accessdate=8 November 2012 }}</ref><ref name="Space-20121107b">{{cite web |last=Tate |first=Karl |title=Super-Earth Planet: Potentially Habitable Alien World Explained (Infographic) |url=http://www.space.com/18390-super-earth-exoplanet-habitable-zone-infographic.html |date=7 November 2012 |publisher=Space.com |accessdate=8 November 2012 }}</ref>
|