HD 55718

HD 55718
HD 55718
Classificazionebianco-azzurra nella sequenza principale
Classe spettraleB3V D ~
Distanza dal Sole903 anni luce
CostellazionePoppa
Redshift0,000057 ± 0,000017
Coordinate
(all'epoca J2000.0)
Ascensione retta07h 12m 25,8230s
Declinazione-36° 32′ 39,773″
Lat. galattica-11,8946°
Long. galattica248,0884°
Dati osservativi
Magnitudine app.5,97
Magnitudine ass.-1,24
Parallasse3,61 ± 0,63 mas
Moto proprioAR: -9,76 ± 0,65 mas/anno
Dec: 7,48 ± 0,54 mas/anno
Velocità radiale17 ± 5 km/s
Nomenclature alternative
GSC 07115-03014, PPM 283641, Cl Collinder 135 5, HD 55718, SAO 197694, BDS 3920 AB, CPC 18 2885, HIC 34817, CCDM J07124-3633AB, CPD -36 1169, HIP 34817, TD1 9472, CD -36 3421, CSV 102551, HR 2726, TYC 7115-3014-1, CEL 1677, GC 9555, IDS 07089-3623 AB, UBV 7036, GCRV 4759, 2MASS J07122583-3632399, uvby98 100055718 AB, NSV 3464

HD 55718 è una stella bianco-azzurra nella sequenza principale di magnitudine 5,97 situata nella costellazione della Poppa. 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 6 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 -1,24 e la sua velocità radiale positiva indica che la stella si sta allontanando dal sistema solare.

Sistema stellare

HD 55718 è un sistema stellare formato da due componenti. La componente principale A è una stella di magnitudine 5,97. La componente B è di magnitudine 8,5, separata da 2,5 secondi d'arco da A e con angolo di posizione di 066 gradi.

Voci correlate

Collegamenti esterni

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

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