Nunki

Nunki
Nunki
Sterrenbeeld Boogschutter (Sagittarius)
Bayer-aanduiding σ Sgr
Overige aanduidingen 34 Sgr, HD 175191, HR 7121, SAO 187448, CD-26 13595, IRC -30396, IRAS 18521-2621
Waarnemingsgegevens
Rechte klimming 18u55m15,9s
Declinatie
(Epoche 2000) 		−26° 17' 48"
Schijnbare magnitude 2,05
Details
Lichtkracht 630
Spectraalklasse B2.V
Temperatuur (K) 22.000 kelvin
Afstand* (lj) 227,763 lj (P=14,32 mas)
Straal 3.480.000 km
Massa 7 (× Zon)
Veranderlijk nee
Meervoudig ja, scheiding 309", magnitudeverschil 7,4. Hoofdster lijkt meervoudig.
Eigenbeweging (μ) Rk: 15,14 mas/jr
Dec: −53,43 mas/jr
* afstanden aangegeven als "parallax xxx = yyy lj" zijn herleid uit de in de bron aangegeven parallax
Portaal  Portaalicoon   Astronomie

Nunki (sigma Sagittarii) is een heldere ster in het sterrenbeeld Boogschutter (Sagittarius). De naam is van Babylonische origine.

De ster staat ook bekend als Sadira.

Bronnen

  • (en) Nunki in SIMBAD
  • Bright Star Catalogue
  • (en) Nunki

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