Van Maanenin tähti Aiheesta muualla | NavigointivalikkoInfobox OKVan Maanen (1917) Two Faint Stars with Large Proper Motion. Publications of the Astronomical Society of the Pacific 29, 258solstation.comGatewood & Russell (1974) Astrometric determination of the gravitational redshift of van Maanen 2 (EG 5). Astronomical Journal 79, 815laajentamalla

Kalojen tähdistöValkoiset kääpiöt


valkoinen kääpiöKalojenparsekinvalovuodenominaisliikkeenAdriaan Van Maanen1917η Pscγ Pscα Psc Aω Pscι Pscο Pscε Pscθ Pscα Psc B30 Pscδ Pscν Pscβ Pscλ Pscτ Psc33 Pscξ Pscχ Pscφ Pscυ Pscμ Psc27 Pscκ Psc19 Psc47 Psc7 Psc64 Psc29 Psc89 Psc82 Pscζ Psc A91 Psc107 Pscψ1 Pscρ Psc55 Psc57 Psc41 Psc52 Psc5 Psc2 Psc68 Psc20 Pscσ Psc94 Psc58 Psc80 Psc34 Pscπ Pscψ1 Pscψ2 Pscψ3 Psc22 Psc72 Psc16 Psc51 Psc32 Psc44 Psc21 Psc66 Psc54 Psc53 Psc112 Psc14 Psc62 Psc24 Psc87 Psc60 Psc105 Psc97 Psc35 Psc73 Psc88 Psc48 Psc67 Psc59 Psc1 Psc36 Psc75 PscHD 2171075 Cet3 Psc26 Psc78 Psc101 Psc42 Psc9 Psc109 Psc76 Psc25 Psc31 Psc77 Psc A13 Psc46 Psc4 Cetζ Psc B15 Psc61 Psc3 Ari40 Psc38 Psc104 Psc45 Psc95 Psc65 Psc65 Psc77 Psc B100 Pscvan Maanenin tähti54 Psc bHD 217107 bHD 217107 c109 Psc b





































Van Maanenin tähti
Muut designaatiot

Van Maanen 2, GJ 35,
HIP 3829
Fyysiset ominaisuudet
Näennäinen kirkkaus
12,4 mv
Absoluuttinen kirkkaus
14,2 Mv
Spektriluokka
wdZ7
Väri-indeksi
B-V 0,56
U-B 0,02
Massa
0,69±0,33 M☉
Säde
0,0132 R☉

Astrometriset ominaisuudet
Tähdistö
Kalat, Psc

Rektaskensio (J2000)

00h 49m 09.9s

Deklinaatio (J2000)

+05° 23' 19"
Etäisyys
14,1 ± 0,1 valovuotta, 4,31 ± 0,03 parsekia
Parallaksi
231,88 ± 1,79 mas
Säteisnopeus
+6±15 km/s
Ominaisliike
RA 1233,05
dekl. -2710,56 mas/v

Näkyy leveysasteiden 90° N
ja 85° S välillä.

Infobox OK

Van Maanenin tähti on valkoinen kääpiö Kalojen tähdistössä. Se sijaitsee hieman reilun neljän parsekin (14 valovuoden) etäisyydellä. Kohteen löysi suuren ominaisliikkeen perusteella hollantilaissyntyinen tähtitieteilijä Adriaan Van Maanen vuonna 1917 vertaillessaan muutaman vuoden välein otettuja kuvia samasta taivaan alueesta. Van Maanenin tähti on eräs harvoista ihmisen mukaan nimetyistä tähdistä.


Van Maanenin tähti on lähimpiä valkeita kääpiöitä ja meitä lähin valkoinen kääpiö, jolla ei ole seuralaistähteä. Verraten viileänä tähtenä se lienee hyvin vanha, mahdollisesti yli 10 miljardia vuotta.



Aiheesta muualla |



  • Van Maanen (1917) Two Faint Stars with Large Proper Motion. Publications of the Astronomical Society of the Pacific 29, 258 löydön kuvaava alkuperäisjulkaisu


  • solstation.com (englanniksi)

  • Gatewood & Russell (1974) Astrometric determination of the gravitational redshift of van Maanen 2 (EG 5). Astronomical Journal 79, 815


Tämä tähtitieteeseen liittyvä artikkeli on tynkä. Voit auttaa Wikipediaa laajentamalla artikkelia.





Kalojen tähdistö (Pisces) » luettelo tähdistä, luokka







Tähdet

η Psc, γ Psc, α Psc A, ω Psc, ι Psc, ο Psc, ε Psc, θ Psc, α Psc B, 30 Psc, δ Psc, ν Psc, β Psc, λ Psc, τ Psc, 33 Psc, ξ Psc, χ Psc, φ Psc, υ Psc, μ Psc, 27 Psc, κ Psc, 19 Psc, 47 Psc, 7 Psc, 64 Psc, 29 Psc, 89 Psc, 82 Psc, ζ Psc A, 91 Psc, 107 Psc, ψ1 Psc, ρ Psc, 55 Psc, 57 Psc, 41 Psc, 52 Psc, 5 Psc, 2 Psc, 68 Psc, 20 Psc, σ Psc, 94 Psc, 58 Psc, 80 Psc, 34 Psc, π Psc, ψ1 Psc, ψ2 Psc, ψ3 Psc, 22 Psc, 72 Psc, 16 Psc, 51 Psc, 32 Psc, 44 Psc, 21 Psc, 66 Psc, 54 Psc, 53 Psc, 112 Psc, 14 Psc, 62 Psc, 24 Psc, 87 Psc, 60 Psc, 105 Psc, 97 Psc, 35 Psc, 73 Psc, 88 Psc, 48 Psc, 67 Psc, 59 Psc, 1 Psc, 36 Psc, 75 Psc, HD 217107, 5 Cet, 3 Psc, 26 Psc, 78 Psc, 101 Psc, 42 Psc, 9 Psc, 109 Psc, 76 Psc, 25 Psc, 31 Psc, 77 Psc A, 13 Psc, 46 Psc, 4 Cet, ζ Psc B, 15 Psc, 61 Psc, 3 Ari, 40 Psc, 38 Psc, 104 Psc, 45 Psc, 95 Psc, 65 Psc, 65 Psc, 77 Psc B, 100 Psc, van Maanenin tähti


Eksoplaneetat

54 Psc b, HD 217107 b, HD 217107 c, 109 Psc b









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