NGC 643

Summary

NGC 643 is an open cluster^[1]. It draws 7 Wikipedia views per month (open_cluster category, ranking #39 of 108).^[2]

Key Facts

• NGC 643 is credited with the discovery of John Frederick William Herschel^[3].
• NGC 643's image is recorded as NGC 0643 DSS.jpg^[4].
• NGC 643's instance of is recorded as open cluster^[5].
• NGC 643's constellation is recorded as Hydrus^[6].
• NGC 643's Commons category is recorded as NGC 643^[7].
• NGC 643's catalog code is recorded as NGC 643^[8].
• NGC 643's catalog code is recorded as 2MASX J01350142-7533250^[9].
• NGC 643's catalog code is recorded as ESO 29-50^[10].
• NGC 643's time of discovery or invention is recorded as +1835-09-18T00:00:00Z^[11].
• NGC 643's apparent magnitude is recorded as {'amount': '+12.973'}^[12].
• NGC 643's apparent magnitude is recorded as {'amount': '+12.286'}^[13].
• NGC 643's apparent magnitude is recorded as {'amount': '+11.987'}^[14].
• NGC 643's metallicity is recorded as {'amount': '-0.82'}^[15].
• NGC 643's Google Knowledge Graph ID is recorded as /g/1224zq5w^[16].
• NGC 643's SIMBAD ID is recorded as NGC 643^[17].
• NGC 643's New General Catalogue ID is recorded as 643^[18].
• NGC 643's right ascension is recorded as {'unit': 'Q28390', 'amount': '+23.75458'}^[19].
• NGC 643's declination is recorded as {'unit': 'Q28390', 'amount': '-75.55722'}^[20].
• NGC 643's epoch is recorded as J2000.0^[21].

Body

Designation and Status

NGC 643's instance of is recorded as open cluster^[5].

History and Context

Catalog codes include NGC 643^[8], 2MASX J01350142-7533250^[9], and ESO 29-50^[10].

Why It Matters

NGC 643 draws 7 Wikipedia views per month (open_cluster category, ranking #39 of 108).^[2] It has Wikipedia articles in 12 language editions, a strong signal of global cultural recognition.^[22]