Messier 81

Summary

Messier 81 is an astronomical radio source^[1]. It ranks in the top 10% of astronomical_radio_source entities by monthly Wikipedia readership (479 views/month).^[2]

Key Facts

• Messier 81 is credited with the discovery of Johann Elert Bode^[3].
• Messier 81's image is recorded as Messier81 highres.jpg^[4].
• Messier 81's image is recorded as M81.jpg^[5].
• Messier 81's instance of is recorded as astronomical radio source^[6].
• Messier 81's instance of is recorded as infrared source^[7].
• Messier 81's instance of is recorded as astrophysical X-ray source^[8].
• Messier 81's instance of is recorded as Seyfert 2 galaxy^[9].
• Messier 81's instance of is recorded as active galactic nucleus^[10].
• Messier 81's constellation is recorded as Ursa Major^[11].
• Messier 81's galaxy morphological type is recorded as SA^[12].
• Messier 81's Library of Congress authority ID is recorded as sh93008380^[13].
• Messier 81's part of is recorded as M81 Group^[14].
• Messier 81's part of is recorded as Q67623310^[15].
• Messier 81's part of is recorded as Q67625557^[16].
• Messier 81's part of is recorded as Q67792811^[17].
• Messier 81's part of is recorded as Q67796330^[18].
• Messier 81's part of is recorded as Q84379370^[19].
• Messier 81's part of is recorded as Q88761001^[20].
• Messier 81's Commons category is recorded as Messier 81^[21].
• Messier 81's child astronomical body is recorded as Holmberg IX^[22].
• Messier 81's has part is recorded as Q1037201^[23].
• Messier 81's catalog code is recorded as BD+69 543^[24].
• Messier 81's catalog code is recorded as HD 85534^[25].
• Messier 81's catalog code is recorded as M 81^[26].
• Messier 81's catalog code is recorded as KPG 218a^[27].

Body

Works and Contributions

Messier 81 is credited with the discovery of Johann Elert Bode^[3].

Why It Matters

Messier 81 ranks in the top 10% of astronomical_radio_source entities by monthly Wikipedia readership (479 views/month).^[2] It has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.^[28] It is known by 25 alternative names across languages and contexts.^[29]