HD 69302

HD 69302
HD 69302
Classificazionebianco-azzurra nella sequenza principale
Classe spettraleB2IV-V C ~
Distanza dal Sole903 anni luce
CostellazioneVele
Redshift0,000067 ± 0,000033
Coordinate
(all'epoca J2000.0)
Ascensione retta08h 14m 23,8709s
Declinazione-45° 50′ 04,281″
Lat. galattica-06,1714°
Long. galattica261,9834°
Dati osservativi
Magnitudine app.5,83
Magnitudine ass.-1,38
Parallasse3,61 ± 0,53 mas
Moto proprioAR: -8,83 ± 0,52 mas/anno
Dec: 10,71 ± 0,45 mas/anno
Velocità radiale20 ± 10 km/s
Nomenclature alternative
CCDM J08144-4550AB, GCRV 5471, HR 3250, TYC 8136-4921-1, IDS 08112-4532 AB, UBV 7939, CD -45 3914, GSC 08136-04921, 2MASS J08142388-4550042, uvby98 100069302 AB, CEL 2270, Hbg 149, PPM 312803, WDS J08144-4550, CPC 0 5608, HD 69302, SAO 219657, [B10] 2196, CPD -45 2285, HIC 40357, p. WDS J08144-4550, GC 11235, HIP 40357, TD1 12091

HD 69302 è una stella bianco-azzurra nella sequenza principale di magnitudine 5,83 situata nella costellazione delle Vele. Dista 903 anni luce dal sistema solare.

Osservazione

Si tratta di una stella situata nell'emisfero celeste australe. La sua posizione moderatamente australe fa sì che questa stella sia osservabile specialmente dall'emisfero sud, in cui si mostra alta nel cielo nella fascia temperata; dall'emisfero boreale la sua osservazione risulta invece più penalizzata, specialmente al di fuori della sua fascia tropicale. La sua magnitudine pari a 5,8 la pone al limite della visibilità ad occhio nudo, pertanto per essere osservata senza l'ausilio di strumenti occorre un cielo limpido e possibilmente senza Luna.

Il periodo migliore per la sua osservazione nel cielo serale ricade nei mesi compresi fra dicembre e maggio; nell'emisfero sud è visibile anche all'inizio dell'inverno, grazie alla declinazione australe della stella, mentre nell'emisfero nord può essere osservata limitatamente durante i mesi della tarda estate boreale.

Caratteristiche fisiche

La stella è una bianco-azzurra nella sequenza principale; possiede una magnitudine assoluta di -1,38 e la sua velocità radiale positiva indica che la stella si sta allontanando dal sistema solare.

Sistema stellare

HD 69302 è un sistema multiplo formato da 3 componenti. La componente principale A è una stella di magnitudine 5,83. La componente B è di magnitudine 7,8, separata da 0,4 secondi d'arco da A e con angolo di posizione di 293 gradi. La componente C è una ipergigante arancione di magnitudine 9,0, separata da 32,4 secondi d'arco da A e con angolo di posizione di 250 gradi.

Voci correlate

Collegamenti esterni

  Portale Stelle: accedi alle voci di Wikipedia che trattano di stelle e costellazioni

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