HD 60532

HD 60532
HD 60532
Classificazionebianco-gialla nella sequenza principale
Classe spettraleF6V D
Distanza dal Sole84 anni luce
CostellazionePoppa
Redshift0,000204 ± 0,000003
Coordinate
(all'epoca J2000.0)
Ascensione retta07h 34m 03,1805s
Declinazione-22° 17′ 45,841″
Lat. galattica-01,1897°
Long. galattica237,4979°
Dati fisici
Raggio medio2,57 R
Massa
1,50 M
Acceleraz. di gravità in superficie3,80 logg
Temperatura
superficiale
  • 6309,57 K (media)
Metallicità66% del Sole
Dati osservativi
Magnitudine app.4,46
Magnitudine ass.2,41
Parallasse38,91 ± 0,66 mas
Moto proprioAR: -40,38 ± 0,72 mas/anno
Dec: 46,84 ± 0,54 mas/anno
Velocità radiale61,1 ± 0,9 km/s
Nomenclature alternative
HIP 36795, GSC 05991-00217, PLX 1789, TYC 5991-217-1, BD -21 2007, HD 60532, PMC 90-93 209, UBV 7296, FAUST 1207, HIC 36795, PPM 252677, UBV M 13404, FK5 288, HR 2906, ROT 1222, uvby98 100060532, GC 10134, IRAS 07319-2211, SAO 174009, YZ 112 5125, GCRV 5048, JP11 1566, 2MASS J07340317-2217457, SRS 30288, GJ 279, N30 1699, TD1 10476

HD 60532 è una stella bianco-gialla nella sequenza principale di magnitudine 4,46 situata nella costellazione della Poppa. Dista 84 anni luce dal sistema solare.[1]

Osservazione

Si tratta di una stella situata nell'emisfero celeste australe; grazie alla sua posizione non fortemente australe, può essere osservata dalla gran parte delle regioni della Terra, sebbene gli osservatori dell'emisfero sud siano più avvantaggiati. Nei pressi dell'Antartide appare circumpolare, mentre resta sempre invisibile solo in prossimità del circolo polare artico. La sua magnitudine pari a 4,5 fa sì che possa essere scorta solo con un cielo sufficientemente libero dagli effetti dell'inquinamento luminoso.

Il periodo migliore per la sua osservazione nel cielo serale ricade nei mesi compresi fra dicembre e maggio; da entrambi gli emisferi il periodo di visibilità rimane indicativamente lo stesso, grazie alla posizione della stella non lontana dall'equatore celeste.

Caratteristiche fisiche

La stella è una bianco-gialla nella sequenza principale; possiede una magnitudine assoluta di 2,41 e la sua velocità radiale positiva indica che la stella si sta allontanando dal sistema solare.

Sistema planetario

Nel settembre 2008 sono stati individuati due pianeti simili a Giove in orbita attorno alla stella[2] che sembrano essere in risonanza 3:1.[3]

Prospetto del sistema

Di seguito un prospetto dei pianeti orbitanti attorna alla stella.[4]

PianetaTipoMassaPeriodo orb.Sem. maggioreEccentricità
bgioviano≥1,06 ± 0,08 MJ201,9 ± 0,3 giorni0,77 ± 0,02 UA0,26 ± 0,02
cgioviano≥2,51 ± 0,16 MJ600,1 ± 2,4 giorni1,60 ± 0,04 UA0,03 ± 0,02

Note

  1. ^ HD 60532, su simbad.u-strasbg.fr. URL consultato il 13 gennaio 2024.
  2. ^ (EN) M. Desort, A.-M. Lagrange e F. Galland, Extrasolar planets and brown dwarfs around A–F type stars - V. A planetary system found with HARPS around the F6IV–V star HD 60532, in Astronomy & Astrophysics, vol. 491, n. 3, 1º dicembre 2008, pp. 883–888, DOI:10.1051/0004-6361:200810241. URL consultato il 13 gennaio 2024.
  3. ^ (EN) J. Laskar e A. C. M. Correia, HD 60532, a planetary system in a 3:1 mean motion resonance, in Astronomy & Astrophysics, vol. 496, n. 2, 1º marzo 2009, pp. L5–L8, DOI:10.1051/0004-6361/200911689. URL consultato il 13 gennaio 2024.
  4. ^ (EN) S. Borgniet, A.-M. Lagrange e N. Meunier, Extrasolar planets and brown dwarfs around AF-type stars - IX. The HARPS southern sample, in Astronomy & Astrophysics, vol. 599, 1º marzo 2017, pp. A57, DOI:10.1051/0004-6361/201628805. URL consultato il 13 gennaio 2024.

Voci correlate

Collegamenti esterni

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

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