Messier 72 Lähteet | Aiheesta muualla | NavigointivalikkoInfobox OKSIMBAD Astronomical DatabaseSEDSin Messier -sivut M72:stalaajentamalla

Vesimiehen tähdistöMessierin luetteloPallomaiset tähtijoukotNGC-kohteet


VesimiehenPierre Méchain1780Charles Messierβ Aqrα Aqrδ Aqrζ1 Aqr88 Aqrλ Aqrε Aqrγ Aqr98 Aqrη Aqrτ2 Aqrθ Aqrφ Aqrψ1 Aqrι Aqr99 Aqrψ2 Aqrζ2 Aqr3 Aqr86 Aqrω2 Aqrν Aqrξ Aqr66 Aqr101 Aqr89 Aqrμ Aqrο Aqrπ Aqrσ Aqr104 Aqr Aχ Aqrω1 Aqrψ3 Aqrκ Aqr25 Aqr47 Aqr1 Aqr108 Aqr94 Aqr B97 Aqr94 Aqr Aυ Aqr68 Aqr106 Aqr107 Aqr32 Aqr41 Aqr42 Aqrρ Aqr103 Aqr38 Aqr83 Aqr18 Aqr21 Aqr7 Aqr12 Aqr A49 Aqr77 Aqr5 Aqr30 Aqr53 Aqr B96 Aqr28 Aqr26 Aqrτ1 Aqr19 Aqr44 Aqr50 AqrHD 22380751 Aqr35 Aqr74 Aqr15 Aqr16 Aqr60 Aqr12 Aqr BDV Aqr45 Aqr4 Aqr17 Aqr39 Aqr82 Aqr70 Aqr78 Aqr11 Aqr81 Aqr100 AqrLP Aqr53 Aqr A56 AqrR Aqr20 Aqr29 Aqr58 Aqr61 Aqr67 AqrIZ AqrEW AqrHD 21027737 Aqr24 AqrHD 222582104 Aqr BGl 876Gl 849AE AqrEZ AqrFO Aqrψ1 Aqr bHD 210277 bGl 876 bGl 876 cGl 876 dGl 849 b


































Messier 72
Messier72.jpg
Historia
Löytäjä
Pierre Méchain
Löytöpäivä
1780
Muut nimet
M72, NGC 6981
Ominaisuudet
Tyyppi
pallomainen tähtijoukko
Etäisyys
17.0 kpc[1]
Koko
6 kaariminuuttia[2]
Ikä
8.5-9.5 miljardia vuotta[3]
Havaitseminen
Tähdistö
Vesimies
Rektaskensio
20 h 53.5 min[4]
Deklinaatio
-12° 32'[4]
Suhteellinen kirkkaus
+9,4[2]
Näkyy Suomessa
elokuu-marraskuu[2]
Infobox OK

Messier 72 (M72, NGC 6981) on Vesimiehen tähdistössä sijaitseva pallomainen tähtijoukko, jonka ranskalainen tähtitieteilijä Pierre Méchain löysi vuonna 1780. Charles Messier lisäsi sen luetteloonsa samana vuonna. Himmeytensä vuoksi he pitivät joukkoa aluksi kaasusumuna, mutta nykyään sen tiedetään olevan noin 55 000 valovuoden päässä Linnunradan keskuksen toisella puolella sijaitseva tähtijoukko. Noin 8-9 miljardin vuoden ikäisenä se on varsin nuori pallomaiseksi joukoksi.


M72:n suhteellinen kirkkaus on 9,4, joten sen näkemiseen tarvitaan kiikari. Yksittäisten tähtien erottaminen vaatii jo keskikokoisen kaukoputken.



Lähteet |



  1. ↑ Harris, W.E.: A Catalog of Parameters for Globular Clusters in the Milky Way. Astronomical Journal, 10/1996, nro 112, s. 1487. [1][2]


  2. ↑ abc Henriksson, Riku; Mäkelä, Veikko: Messierin kohteet. URSA, 2000. ISBN 952-5329-04-6.


  3. ↑ Meissner, F.; Weiss, A.: Global fitting of globular cluster age indicators. Astronomy and Astrophysics, 09/2006, nro 456, s. 1085-1096. [3]


  4. ↑ ab SIMBAD Astronomical Database Centre de
    Données astronomiques de
    Strasbourg. Viitattu 28. tammikuuta 2007.


Aiheesta muualla |



  • SEDSin Messier -sivut M72:sta (englanniksi)






Vesimiehen tähdistö (Aquarius) » luettelo tähdistä, luokka







Tähdet

β Aqr, α Aqr, δ Aqr, ζ1 Aqr, 88 Aqr, λ Aqr, ε Aqr, γ Aqr, 98 Aqr, η Aqr, τ2 Aqr, θ Aqr, φ Aqr, ψ1 Aqr, ι Aqr, 99 Aqr, ψ2 Aqr, ζ2 Aqr, 3 Aqr, 86 Aqr, ω2 Aqr, ν Aqr, ξ Aqr, 66 Aqr, 101 Aqr, 89 Aqr, μ Aqr, ο Aqr, π Aqr, σ Aqr, 104 Aqr A, χ Aqr, ω1 Aqr, ψ3 Aqr, κ Aqr, 25 Aqr, 47 Aqr, 1 Aqr, 108 Aqr, 94 Aqr B, 97 Aqr, 94 Aqr A, υ Aqr, 68 Aqr, 106 Aqr, 107 Aqr, 32 Aqr, 41 Aqr, 42 Aqr, ρ Aqr, 103 Aqr, 38 Aqr, 83 Aqr, 18 Aqr, 21 Aqr, 7 Aqr, 12 Aqr A, 49 Aqr, 77 Aqr, 5 Aqr, 30 Aqr, 53 Aqr B, 96 Aqr, 28 Aqr, 26 Aqr, τ1 Aqr, 19 Aqr, 44 Aqr, 50 Aqr, HD 223807, 51 Aqr, 35 Aqr, 74 Aqr, 15 Aqr, 16 Aqr, 60 Aqr, 12 Aqr B, DV Aqr, 45 Aqr, 4 Aqr, 17 Aqr, 39 Aqr, 82 Aqr, 70 Aqr, 78 Aqr, 11 Aqr, 81 Aqr, 100 Aqr, LP Aqr, 53 Aqr A, 56 Aqr, R Aqr, 20 Aqr, 29 Aqr, 58 Aqr, 61 Aqr, 67 Aqr, IZ Aqr, EW Aqr, HD 210277, 37 Aqr, 24 Aqr, HD 222582, 104 Aqr B, Gl 876, Gl 849, AE Aqr, EZ Aqr, FO Aqr


Eksoplaneetat

ψ1 Aqr b, HD 210277 b, Gl 876 b, Gl 876 c, Gl 876 d, Gl 849 b





Messierin luettelo




M1 | M2 | M3 | M4 | M5 | M6 | M7 | M8 | M9 | M10 | M11 | M12 | M13 | M14 | M15 | M16 | M17 | M18 | M19 | M20 | M21 | M22 | M23 | M24 | M25 | M26 | M27 | M28 | M29 | M30 | M31 | M32 | M33 | M34 | M35 | M36 | M37 | M38 | M39 | M40 | M41 | M42 | M43 | M44 | M45 | M46 | M47 | M48 | M49 | M50 | M51 | M52 | M53 | M54 | M55 | M56 | M57 | M58 | M59 | M60 | M61 | M62 | M63 | M64 | M65 | M66 | M67 | M68 | M69 | M70 | M71 | M72 | M73 | M74 | M75 | M76 | M77 | M78 | M79 | M80 | M81 | M82 | M83 | M84 | M85 | M86 | M87 | M88 | M89 | M90 | M91 | M92 | M93 | M94 | M95 | M96 | M97 | M98 | M99 | M100 | M101 | M102 | M103 | M104 | M105 | M106 | M107 | M108 | M109 | M110



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