VdB 10


vdB 10
Nebulosa a riflessione
vdB 10
Dati osservativi
(epoca J2000)
CostellazionePerseo
Ascensione retta03h 15m 48,0s[1]
Declinazione+57° 08′ 26″[1]
Coordinate galattichel = 141,6; b = -0,4[2]
Distanza1614 a.l.
(495 pc)
Magnitudine apparente (V)5,8 (stella centrale)[2]
Dimensione apparente (V)8,0' x 5,4'[2]
Caratteristiche fisiche
TipoNebulosa a riflessione
Mappa di localizzazione
VdB 10
Categoria di nebulose a riflessione

vdB 10 è una piccola nebulosa diffusa, visibile nella costellazione di Perseo.

Si può individuare partendo dalla stella η Persei, una gigante arancione di magnitudine 3,77 e spostandosi di circa 2° in direzione ENE, fino a raggiungere la κ Persei, di quarta grandezza; da qui si prosegue nella stessa direzione per 1,5°, fino a raggiungere una stella bianca di magnitudine 5,8, catalogata come HD 20041 e al limite della visibilità ad occhio nudo.

Foto a lunga posa eseguite con l'ausilio di un telescopio consentono di mostrare come questa stella sia avvolta da una tenue nebulosità, che diventa evidente soprattutto sui lati orientale e occidentale; la nebulosa riflette la luce di questa stella diventando essa stessa luminosa per riflessione, mostrando un colore bluastro. Il sistema è distante circa 1614 anni luce dal sistema solare.

Note

  1. ^ a b Simbad Query Result, su simbad.u-strasbg.fr. URL consultato il 14 ottobre 2009.
  2. ^ a b c van den Bergh, S., A study of reflection nebulae., in Astronomical Journal, vol. 71, dicembre 1966, pp. 990-998, DOI:10.1086/109995. URL consultato il 14 ottobre 2009.

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