Procyon

Ang Procyon (kilala rin bilang Alpha Canis Minoris) ay ang pinakamaliwanag na bituin sa konstelasyon ng Canis Minor at isa sa pinakamaliwanag na bituin sa kalan

Procyon
Procyon
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Posisyon ng Procyon (Alpha Canis Minoris).
Impormasyon sa pagtingin
Epoka J2000.0      Equinox J2000.0
Konstelasyon Canis Minor
Kanang asensiyon 07h 39m 18.11950s[1]
Deklinasyon +05° 13′ 29.9552″[1]
Maliwanag na  kalakhan (V)0.34[2] (A)
10.7[3] (B)
Katangian
Bahaging ebolusyonSubhigante + Puting unano[4]
Pag-uuring pambituinF5 IV–V[5] + DQZ[6]
U−B sa talatuntunan ng kulay+0.00[7]
B−V sa talatuntunan ng kulay+0.42[7]
Astrometriya
Radyal na hagibis (Rv)-3.2 km/s
Paralaks (π)284.56 ± 1.26 mas
Layo11.46 ± 0.05[8] st
(3.51 ± 0.02 pc)
Detalye
Procyon A
Bigat1.478 ± 0.012[4] M☉
Radyos2.043 ± 0.009[9] R☉
Luminosidad7.049 ± 0.064[9] L☉
Temperatura6,582 ± 5[9] K
Metalisidad [Fe/H]−0.02 ± 0.02[9] dex
Edad1.87 ± 0.13[10] Gyr
Procyon B
Bigat0.592 ± 0.006[4] M☉
Radyos0.01234 ± 0.00032[11] R☉
Luminosidad0.00049 L☉
Temperatura7,740 ± 50[11] K
Edad1.37 Gyr
Iba pang pagtatanda
Procyon, Alpha Canis Minoris, ɑ Canis Minoris, 10 Canis Minoris, HD 61421, HIP 37279, HR 2943, GJ 280[12]

Ang Procyon (kilala rin bilang Alpha Canis Minoris) ay ang pinakamaliwanag na bituin sa konstelasyon ng Canis Minor at isa sa pinakamaliwanag na bituin sa kalangitan sa gabi.[13] Ito ay matatagpuan sa layong humigit-kumulang 11.46 taong-liwanag mula sa Daigdig, kaya isa ito sa mga pinakamalapit na maliwanag na bituin.[8]

Ang Procyon ay isang sistemang may dalawang bituin.[6][8] Ang pangunahing bituin, ang Procyon A, ay isang dilaw-puting subhiganteng bituin na mas malaki at mas maliwanag kaysa sa Araw. Ang kasama nito, ang Procyon B, ay isang puting duwende o white dwarf na natuklasan noong ika-19 na siglo.[10][14][15]

Ang Procyon ang ikawalong pinakamaliwanag na bituin sa kalangitan sa gabi.[16] Ito ay bumubuo ng isa sa tatlong vertex ng asterismo ng Winter Triangle, kasama ang Sirius at Betelgeuse.[5] Ang pinakamagandang panahon para panoorin ang Procyon sa gabi ay sa huling bahagi ng taglamig sa Hilagang Hemisperyo.[17]

Ang pangalang Procyon ay nagmula sa sinaunang salitang Griyego na Προκύων (Prokyon), na nangangahulugang "bago ang aso". Nakuha nito ang pangalang ito dahil sumisikat ito bago ang Sirius, ang maliwanag na "Bituin ng Aso" sa Canis Major, habang naglalakbay sila sa kalangitan sa gabi.[13][18]

Galeriya

Tingnan din

Mga sanggunian

  1. ↑ 1.0 1.1 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. ↑ Kervella, P.; atbp. (2004). "The diameter and evolutionary state of Procyon A. Multi-technique modeling using asteroseismic and interferometric constraints". Astronomy and Astrophysics. 413 (1): 251–256. arXiv:astro-ph/0309148. Bibcode:2004A&A...413..251K. doi:10.1051/0004-6361:20031527. S2CID 8840932.
  3. ↑ Schroeder, Daniel J.; atbp. (2000). "A Search for Faint Companions to Nearby Stars Using the Wide Field Planetary Camera 2". The Astronomical Journal. 119 (2): 906–922. Bibcode:2000AJ....119..906S. doi:10.1086/301227.
  4. ↑ 4.0 4.1 4.2 Bond, Howard E.; atbp. (2015-11-04). "Hubble Space Telescope Astrometry of the Procyon System". The Astrophysical Journal. 813 (2): 106. arXiv:1510.00485. Bibcode:2015ApJ...813..106B. doi:10.1088/0004-637x/813/2/106. ISSN 1538-4357.
  5. ↑ 5.0 5.1 "Procyon — Binary Star & White Dwarf Companion". Universe Map (sa wikang Ingles). 2025-12-07. Nakuha noong 2026-08-13.
  6. ↑ 6.0 6.1 "Procyon (α CMi): Star System, Name, Constellation, Location". Star Facts (sa wikang Ingles). 2023-03-04. Nakuha noong 2026-08-13.
  7. ↑ 7.0 7.1 Mermilliod, J.-C (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
  8. ↑ 8.0 8.1 8.2 Dougan, Neal. "Procyon Star (Alpha Canis Minoris): Brightest Star of the Lesser Dog". The Planets (sa wikang Ingles). Nakuha noong 2026-08-13.
  9. ↑ 9.0 9.1 9.2 9.3 Soubiran, C.; atbp. (2024-02-01), "Gaia FGK benchmark stars: Fundamental Teff and log g of the third version", Astronomy and Astrophysics, 682: A145, arXiv:2310.11302, Bibcode:2024A&A...682A.145S, doi:10.1051/0004-6361/202347136, ISSN 0004-6361 Procyon A's database entry at VizieR.
  10. ↑ 10.0 10.1 Liebert, James; atbp. (2013), "The Age and Stellar Parameters of the Procyon Binary System", The Astrophysical Journal, 769 (1): 10, arXiv:1305.0587, Bibcode:2013ApJ...769....7L, doi:10.1088/0004-637X/769/1/7, S2CID 118473397, 7
  11. ↑ 11.0 11.1 Provencal, J. L.; atbp. (2002). "Procyon B: Outside the Iron Box". The Astrophysical Journal. 568 (1): 324–334. Bibcode:2002ApJ...568..324P. doi:10.1086/338769.
  12. ↑ "Procyon". SIMBAD. Nakuha noong 2026-08-13.
  13. ↑ 13.0 13.1 "Procyon". Britannica (sa wikang Ingles). Nakuha noong 2026-08-13.
  14. ↑ "Nearby Stars". hyperphysics.phy-astr.gsu.edu. Nakuha noong 2026-08-13.
  15. ↑ "Procyon UV Flux Distribution". sdc.cab.inta-csic.es. Nakuha noong 2026-08-13.
  16. ↑ Miller, James. "Star Facts: Procyon - Type, Size, Color, & Distance". Astronomy Trek (sa wikang Ingles). Nakuha noong 2026-08-13.
  17. ↑ Sessions, Larry (2024-01-10). "Bright Procyon: The Little Dog Star in Canis Minor". EarthSky (sa wikang Ingles). Nakuha noong 2026-08-13.
  18. ↑ Howell, Elizabeth (2013-09-24). "Procyon: Bright Star With Hidden Companion". Space (sa wikang Ingles). Inarkibo mula sa orihinal noong 2013-09-25. Nakuha noong 2026-08-13.

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