قنطورس الأقرب vs الشعرى اليمانية

Property قنطورس الأقرب الشعرى اليمانية
التسمية N/A 9Alp CMa
الكوكبة Centaurus Canis Major
النوع الطيفي Class M — M-type (Red) Class A — A-type (White)
القدر الظاهري +11.01 -1.44
القدر المطلق 15.45 1.45
المسافة 4.2 ly 8.6 ly
الكتلة N/A N/A
نصف القطر N/A N/A
درجة الحرارة N/A N/A
السطوع N/A N/A

Key Differences

  • Sirius is a brilliant A-type star 8.6 ly away; Proxima Centauri is a faint M-type red dwarf at 4.24 ly.
  • Proxima Centauri is the closest star to the Sun; Sirius is the closest naked-eye star in its direction.
  • Sirius is 25.4 times more luminous than the Sun; Proxima Centauri produces only 0.17% of the Sun's light.
  • Proxima Centauri hosts confirmed exoplanets in the habitable zone; Sirius has no known planets.
  • Sirius shines at magnitude −1.46; Proxima Centauri at magnitude 11.1 is invisible to the naked eye.

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