팔분의자리 델타

팔분의자리 델타
Delta Octantis
팔분의자리의 모습으로, 팔분의자리 델타는 제일 오른쪽 아래 별이다.
팔분의자리의 모습으로, 팔분의자리 델타는 제일 오른쪽 아래 별이다.
명칭
바이어 명명법 δ Oct
헨리 드레이퍼 목록 HD 124882
스미소니언 천문대 항성목록 SAO 258698
소천성표 CD-83 189
히파르코스 목록 HIP 70638
다른 이름 GC 19349, HR 5339, NSV 6636
관측 정보
(역기점 J2000)
별자리 팔분의자리
적경(α) 14h 26m 55.23244s[1]
적위(δ) -83° 40′ 04.3868″[1]
겉보기등급(m) 4.31[2]
절대등급(M) −0.35 ± 0.09[3]
위치천문학
시선속도 +4.60 km/s[4]
적경 고유운동 -96.12 mas/yr[1]
적위 고유운동 -13.27 mas/yr[1]
연주시차 10.91 ± 0.14 mas[1]
거리 299 ± 4 광년
92 ± 1 pc
성질
광도 271 L☉[2]
나이 43억 년[3]
분광형 K2III[5]
U-B 색지수 +1.45[6]
B-V 색지수 +1.31[6]
추가 사항
질량 1.06 M☉[4]
반지름 24.61 R☉[4]
표면온도 4,311 K[4]
중원소 함량 (Fe/H) -0.42 dex[4]
표면 중력 (log g) 1.89 cgs[4]
자전 속도 1.1 km/s[7]
항성 목록

겉보기등급순 · 절대등급순
거리순 · 질량순 · 반지름순


팔분의자리 델타(δ Octantis, Delta Octantis)는 토성의 극성으로 유명한 별로,[8] 질량은 태양의 1.2배, 반지름은 25배이다. 나이는 약 43억 년으로, 태양과 유사하다.[3]

각주

  1. ↑ 가 나 다 라 마 Van Leeuwen, F. (2007). “Validation of the new Hipparcos reduction”. 《Astronomy and Astrophysics》 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ↑ 가 나 Anderson, E.; Francis, Ch. (2012). “XHIP: An extended hipparcos compilation”. 《Astronomy Letters》 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ↑ 가 나 다 da Silva, L.; 외. (November 2006), “Basic physical parameters of a selected sample of evolved stars”, 《Astronomy and Astrophysics》 458 (2): 609–623, arXiv:astro-ph/0608160, Bibcode:2006A&A...458..609D, doi:10.1051/0004-6361:20065105 
  4. ↑ 가 나 다 라 마 바 Jofré, E.; Petrucci, R.; Saffe, C.; Saker, L.; Artur de la Villarmois, E.; Chavero, C.; Gómez, M.; Mauas, P. J. D. (2015). “Stellar parameters and chemical abundances of 223 evolved stars with and without planets”. 《Astronomy & Astrophysics》 574: A50. arXiv:1410.6422. Bibcode:2015A&A...574A..50J. doi:10.1051/0004-6361/201424474.  Vizier catalog entry
  5. ↑ Hoffleit, D.; Warren, W. H. (1995). “VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)”. 《VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H》 5050. Bibcode:1995yCat.5050....0H. 
  6. ↑ 가 나 Mallama, A. (2014). “Sloan Magnitudes for the Brightest Stars”. 《The Journal of the American Association of Variable Star Observers》 42: 443. Bibcode:2014JAVSO..42..443M. Vizier catalog entry
  7. ↑ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). “A catalog of rotational and radial velocities for evolved stars”. 《Astronomy & Astrophysics》 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762.  Vizier catalog entry
  8. ↑ “Octans”. UK Astronomy Society. 2020년 8월 1일에 원본 문서에서 보존된 문서. 2011년 10월 10일에 확인함. 
이 글은 항성에 관한 토막글입니다. 여러분의 지식으로 알차게 문서를 완성해 갑시다.

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