HD 10307

HD 10307
HD 10307
Classificazionenana gialla nella sequenza principale
Classe spettraleG1.5V C ~
Distanza dal Sole41 anni luce
CostellazioneAndromeda
Redshift0,000013 ± 0,000003
Coordinate
(all'epoca J2000.0)
Ascensione retta01h 41m 47,1429s
Declinazione+42° 36′ 48,128″
Lat. galattica-19,2999°
Long. galattica132,7154°
Dati fisici
Raggio medio1,15[1] R
Massa
1,03[2] M
Acceleraz. di gravità in superficie4,29 logg
Temperatura
superficiale
Luminosità
1,44[3] L
Metallicità110% del Sole[2]
Età stimata5,6 miliardi di anni[2]
Dati osservativi
Magnitudine app.4,9
Magnitudine ass.4,39
Parallasse79,09 ± 0,83 mas
Moto proprioAR: 791,34 ± 0,66 mas/anno
Dec: -180,18 ± 0,45 mas/anno
Velocità radiale4,0 ± 0,9 km/s
Nomenclature alternative
HD 10307, GSC 02823-02455, 2MASS J01414714+4236483, TD1 959, AG +42 162, HIC 7918, NLTT 5629, TYC 2823-2455-1, ASCC 379383, HIP 7918, PLX 350, UBV 1719, BD +41 328, HR 483, PM 01387+4222, UBV M 8348, Ci 20 118, JP11 522, PPM 44319, USNO -B1.0 1326-00036982, GC 2050, LFT 150, ROT 238, uvby98 100010307, GCRV 944, LHS 1284, SAO 37434, WDS J01418+4237, LSPM J0141+4236, SBC9 2546, GJ 67, LTT 10590

HD 10307 è una stella nana gialla nella sequenza principale di magnitudine 4,9 situata nella costellazione di Andromeda. Dista 41 anni luce dal sistema solare.

Osservazione

Si tratta di una stella situata nell'emisfero celeste boreale. La sua posizione moderatamente boreale fa sì che questa stella sia osservabile specialmente dall'emisfero nord, in cui si mostra alta nel cielo nella fascia temperata; dall'emisfero australe la sua osservazione risulta invece più penalizzata, specialmente al di fuori della sua fascia tropicale. La sua magnitudine pari a 4,9 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 settembre e febbraio; nell'emisfero nord è visibile anche per un periodo maggiore, grazie alla declinazione boreale della stella, mentre nell'emisfero sud può essere osservata solo durante i mesi della tarda primavera e inizio estate australi.

Caratteristiche fisiche

HD 10307 è un sistema binario formato da una stella nana gialla con caratteristiche simili a quelle del Sole; ha come compagna una debole nana rossa, poco studiata e che ruota attorno alla principale in poco meno di 20 anni su un'orbita eccentrica che la porta a variare la sua distanza dalla principale da 4,2 a 10,5 UA. La principale ha una massa paragonabile a quella del Sole, mentre il raggio e la luminosità sono superiori rispettivamente del 15% e 44% rispetto al Sole. Anche la metallicità e simile a quella solare, di conseguenza la stella è ritenuta una delle più adatte a ospitare pianeti terrestri potenzialmente abitabili, sebbene la compagna vicina potrebbe disturbare l'orbita di un pianeta terrestre posto nella zona abitabile della stella.

Possiede una magnitudine assoluta di 4,39 e la sua velocità radiale positiva indica che la stella si sta allontanando dal sistema solare.

Note

Voci correlate

Altri progetti

Collegamenti esterni

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

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