Also known as Giausar
star in the constellation Draco
In the Vinony graph
Within Vinony's link graph, 上輔 is referenced by 207 other articles, and connects out to year, light-year and solar mass.
It is catalogued under topics including Asymptotic-giant-branch stars, Bayer objects and Bright Star Catalogue objects.
Its subject is documented across 15 Wikipedia language editions.
Astronomical data · SIMBAD
- Object type
- *
- Spectral type
- M0III-IIIaCa1
- Distance
- 377 light-years
- Redshift
- z = 0.00002201547262359327
- Coordinates
- RA 172.8509° · Dec 69.3311°
via SIMBAD · CDS Strasbourg
Wikidata facts
- Constellation
- Draco
- Distance from Earth
- 115.663
- Diameter
- 97400000
- Radius
- 53
- Mass
- 1.7
- Variable-star type
- semiregular variable star
Show 12 more facts
- spectral class
- Ma
- catalog code
- UBV M 17130
- apparent magnitude
- 3.102934
- effective temperature
- 3600
- radial velocity
- 6.9
- parallax
- 8.6458
- epoch
- J2000.0
- right ascension component of proper motion
- -41.24
- declination component of proper motion
- -18.851
- right ascension
- 172.85092364299916
- declination
- 69.33107573011195
- metallicity
- -0.4
Sources (2)
via Wikidata · CC0
Article · 中文
上輔（Lambda Draconis、λ Draconis，縮寫為Lam Dra、λ Dra），也稱為Giausar，位於拱極星座天龍座內，是一顆單獨、呈現橘紅色的恆星。它的視星等為 +3.8等，可以用裸眼直接看見。依據從地球上測量到的視差9,79mas ，這顆恆星距離太陽約333光年。 這是一顆已經演化至漸近巨星分支的紅巨星，在分類上是MOIII-IIIaCa1，並被懷疑是顆週期大約1,100天的慢不規則變星。在修正臨邊昏暗之後，測量所得的角直徑為6.43±0.07 mas.。在前述的估計距離上，它的真實半徑大約是太陽半徑的53倍，質量是太陽質量的1.7倍，來自有效溫度3,958K的光球亮度是太陽亮度的834倍。
Abstract from DBpedia / Wikipedia · CC BY-SA
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