K
恒星光谱

K
有效溫度
3,500–5,000 K
太阳半径
0.7–0.96 R
太阳质量
0.45–0.8 M

橙矮星 ,也就是K型主序星(KV),是主序帶(以氫為燃料)上,光譜類型為K,亮度分類為V的恆星。這些恆星的大小介於M-型主序星、亮度分類為V,和G-型主序星、亮度分類為V的恆星之間,質量是太陽質量的0.5至0.8倍,表面溫度在3,900至5,200K。, Tables VII, VIII.。 這種恆星是我們尋找在地球外的生命時最感興趣的,因為它們停留在主序帶上穩定的時間很長(150億至300億年,相較之下太陽只有100億年),這樣就可能有機會在環繞著的類地行星上創造出生命。 此種恆星的例子有半人馬座α星B和印第安座 ε 、奎宿增三、HD 13445、牛宿增十、天苑四。

Uses material from the Wikipedia article "橙矮星", which is released under the Creative Commons BY-SA 3.0.
Astronomical object 距离Wiki
1 AurigaeStar, Infra-Red sourceK504[x]
1 PegasiStar, Double or multiple star, Infra-Red source, 聯星, UV-emission sourceK156[x]
109 HerculisStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK119[x]
11 CepheiStar, Infra-Red source, High proper-motion Star, UV-emission sourceK182[x]
14 HerculisStar, Double or multiple star, Infra-Red source, High proper-motion StarK58[x]
15 EridaniStar, Double or multiple star, Infra-Red source, UV-emission sourceK255[x]
3 AndromedaeStar, Infra-Red source, High proper-motion StarK176[x]
3 PerseiStar, Infra-Red sourceK245[x]
30 GeminorumStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK289[x]
31 OrionisStar, Double or multiple star, Infra-Red source, Variable StarK508[x]
36 AndromedaeStar, Double or multiple star, Infra-Red source, Variable StarK124[x]
36 OphiuchiStar, Double or multiple star, Infra-Red sourceK19[x]
39 ArietisStar, Infra-Red source, High proper-motion Star, UV-emission sourceK171[x]
41 CapricorniStar, Double or multiple star, Infra-Red sourceK231[x]
42 DraconisStar, Infra-Red source, High proper-motion Star, UV-emission sourceK315[x]
43 TauriStar, Infra-Red source, UV-emission sourceK284[x]
47 AquariiStar, Infra-Red source, 紅巨星K171[x]
49 ArietisStar, Infra-Red source, UV-emission source, Variable Star210[x]
54 PisciumStar, Infra-Red source, High proper-motion Star, Rotationally variable Star, Variable Star, X-ray sourceK36[x]
56 CetiStar, Infra-Red sourceK353[x]
6 DraconisStar, Infra-Red sourceK602[x]
6 LyncisStar, Double or multiple star, Infra-Red source, High proper-motion StarK182[x]
61 CygniStar, Double or multiple star, Infra-Red source, X-ray sourceK11[x]
64 ArietisStar, Infra-Red sourceK208[x]
66 ArietisStar, Double or multiple star, Infra-Red source, UV-emission sourceK210[x]
70 OphiuchiStar, Double or multiple star, Variable of BY Dra type, Infra-Red source, High proper-motion Star, 聯星, UV-emission source, Variable Star, X-ray sourceK16[x]
75 TauriStar, Double or multiple star, Star in Cluster, Infra-Red source, UV-emission source, Variable StarK186[x]
77 AquariiStar, Infra-Red source, High proper-motion Star, Variable StarK134[x]
8 PerseiStar, Infra-Red sourceK411[x]
9 HydraeStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK212[x]
93 HerculisStar, Infra-Red source, UV-emission sourceK671[x]
98 AquariiStar, Infra-Red source, UV-emission sourceK164[x]
A BootisStar, Infra-Red source, 聯星, UV-emission sourceK234[x]
AB PictorisStar, Variable of BY Dra type, Infra-Red source, Pre-main sequence Star, UV-emission source, Variable Star, X-ray sourceK150[x]
AlbireoStar, Double or multiple star, Star in double system, Infra-Red source, Variable StarK435[x]
AldebaranStar, Double or multiple star, Infra-Red source, Long Period Variable, High proper-motion Star, UV-emission source, Variable StarK67[x]
AlgiebaStar, Double or multiple star, Infra-Red sourceK130[x]
Alpha AntliaeStar, Infra-Red source, Variable StarK366[x]
Alpha HorologiiStar, Infra-Red source, High proper-motion Star, UV-emission sourceK115[x]
Alpha IndiStar, Double or multiple star, Infra-Red source, UV-emission sourceK98[x]
Alpha ScutiStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK199[x]
Alpha TucanaeStar, Double or multiple star, Infra-Red source, 聯星, UV-emission sourceK200[x]
Alpha VolantisStar, Double or multiple star, Infra-Red source, UV-emission source125[x]
AlphardStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK180[x]
AlsciaukatStar, Infra-Red source, Semi-regular pulsating Star, Variable StarK382[x]
AnkaaStar, Infra-Red source, High proper-motion Star, 聯星, UV-emission sourceK85[x]
ArcturusStar, Infra-Red source, High proper-motion Star, 紅巨星, UV-emission source, Variable StarK37[x]
Asellus AustralisStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK131[x]
AzhaStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK136[x]
b CapricorniStar, Infra-Red source, UV-emission sourceK171[x]
B CentauriStar, Infra-Red sourceK433[x]
BD+26 2184Star, Infra-Red sourceK69[x]
BD-01 2784Star, Infra-Red sourceK67[x]
Beta VolantisStar, Infra-Red source, Variable StarK108[x]
BoteinStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK169[x]
BY DraconisStar, Double or multiple star, Variable of BY Dra type, 耀星, Infra-Red source, High proper-motion Star, Radio-source, 聯星, UV-emission source, Variable Star, X-ray sourceK53[x]
CebalraiStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK82[x]
CF 17413Star, Infra-Red source, Pre-main sequence Star, X-ray sourceK96[x]
CO CamelopardalisStar, Ellipsoidal variable Star, Infra-Red source, 聯星, UV-emission source, Variable Star, X-ray source109[x]
D CentauriStar, Double or multiple star, Infra-Red sourceK572[x]
DE BootisStar, Infra-Red source, High proper-motion Star, Variable of RS CVn type, 聯星, UV-emission source, Variable Star, X-ray sourceK38[x]
Delta AndromedaeStar, Double or multiple star, Infra-Red source, High proper-motion Star, 聯星, UV-emission source, Variable StarK105[x]
Delta AurigaeStar, Double or multiple star, Infra-Red source, High proper-motion Star, 聯星, UV-emission sourceK141[x]
Delta MuscaeStar, Infra-Red source, High proper-motion Star, 聯星K90[x]
Delta NormaeStar, Infra-Red source, UV-emission source123[x]
Delta OctantisStar, Infra-Red source, High proper-motion Star, Variable StarK299[x]
Deneb AlgediStar, Double or multiple star, Eclipsing binary of Algol type (detached), Infra-Red source, High proper-motion Star, 聯星, UV-emission source, Variable Star, X-ray source39[x]
DiphdaStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable Star, X-ray sourceK96[x]
e CentauriStar, Infra-Red sourceK294[x]
EnifStar, Double or multiple star, Infra-Red source, 長週期變星, 特殊恆星, UV-emission source, Variable StarK690[x]
EP EridaniStar, Double or multiple star, 耀星, Infra-Red source, High proper-motion Star, Rotationally variable Star, Variable of RS CVn type, UV-emission source, Variable Star, X-ray sourceK34[x]
Epsilon CrucisStar, Infra-Red source, High proper-motion Star, Variable StarK230[x]
Epsilon CygniStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK72[x]
Epsilon EridaniStar, Double or multiple star, Variable of BY Dra type, Infra-Red source, High proper-motion Star, Rotationally variable Star, UV-emission source, Variable Star, X-ray sourceK11[x]
Epsilon FornacisStar, Infra-Red source, High proper-motion Star, UV-emission sourceK105[x]
Epsilon IndiStar, Double or multiple star, Infra-Red source, High proper-motion Star, Pre-main sequence Star, UV-emission source, X-ray sourceK12[x]
Epsilon PhoenicisStar, Infra-Red source, High proper-motion Star, UV-emission sourceK145[x]
Epsilon ReticuliStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK59[x]
Epsilon ScorpiiStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable Star, X-ray sourceK64[x]
Eta CepheiStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK46[x]
Eta SerpentisStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK61[x]
EtaminStar, Double or multiple star, Infra-Red source, UV-emission sourceK154[x]
G HydraeStar, Infra-Red source, High proper-motion Star, UV-emission source, X-ray sourceK157[x]
G ScorpiiStar, Double or multiple star, Infra-Red source, UV-emission source, Variable StarK126[x]
Gamma MensaeStar, Double or multiple star, Infra-Red source, High proper-motion StarK102[x]
Gliese 2084Star, Double or multiple star, Infra-Red source, 特殊恆星, High proper-motion Star, Variable of RS CVn type, sub-millimetric source, UV-emission source, Variable Star, X-ray sourceK146[x]
Gliese 868Star, Infra-Red source, High proper-motion StarK44[x]
Gorgonea QuartaStar, Double or multiple star, Infra-Red source, UV-emission sourceK288[x]
GrumiumStar, Double or multiple star, Infra-Red source, High proper-motion Star, UV-emission sourceK112[x]
h EridaniStar, Double or multiple star, Horizontal Branch Star, Infra-Red source, UV-emission sourceK184[x]
H ScorpiiStar, Infra-Red source, Variable StarK342[x]
HamalStar, Infra-Red source, High proper-motion Star, UV-emission source, Variable StarK66[x]
HAT-P-3Star, Infra-Red source, Extra-solar Planet, Variable StarK457[x]
HD 129456Star, Infra-Red source, High proper-motion StarK210[x]
HIP 112441Star, Infra-Red sourceK142[x]
HIP 2Star, Infra-Red source, High proper-motion StarK156[x]
HIP 20277Star, High proper-motion StarK143[x]
HIP 2350Star, Double or multiple star, Infra-Red source, High proper-motion StarK163[x]
HIP 26664Star, Infra-Red source, High proper-motion StarK144[x]
HIP 28393Star, Double or multiple star, Infra-Red source, Pre-main sequence Star, X-ray sourceK133[x]