पोलारिस vs अभिजित् तारा

Property पोलारिस अभिजित् तारा
पदनाम 1Alp UMi 3Alp Lyr
नक्षत्रमंडल N/A Lyra
वर्णक्रम वर्ग Class F — F-type (Yellow-White) Class A — A-type (White)
आभासी परिमाण +1.97 +0.03
निरपेक्ष परिमाण -3.64 0.60
दूरी 433 ly 25.0 ly
द्रव्यमान N/A N/A
त्रिज्या N/A N/A
तापमान N/A N/A
दीप्तिमानता N/A N/A

Key Differences

  • ◆ Polaris is an F-type Cepheid variable supergiant; Vega is a stable A-type main-sequence star.
  • ◆ Polaris is 431 light-years away; Vega is much closer at 25 light-years.
  • ◆ Polaris sits near the north celestial pole and has guided navigators for centuries; Vega was the pole star ~14,000 years ago.
  • ◆ Vega served as the original zero-magnitude reference for the photometric system.
  • ◆ Polaris pulsates in brightness; Vega has a debris disk suggesting a forming planetary system.

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