21539 Josefhlávka

Summary

21539 Josefhlávka is an asteroid^[1]. It ranks in the top 2% of asteroid entities by monthly Wikipedia readership (1 views/month).^[2]

Key Facts

• 21539 Josefhlávka is credited with the discovery of Petr Pravec^[3].
• 21539 Josefhlávka's instance of is recorded as asteroid^[4].
• 21539 Josefhlávka's site of astronomical discovery is recorded as Ondřejov Observatory^[5].
• Josef Hlávka is named after 21539 Josefhlávka^[6].
• 21539 Josefhlávka's follows is recorded as (21538) 1998 QN1^[7].
• 21539 Josefhlávka's followed by is recorded as 21540 Itthipanyanan^[8].
• 21539 Josefhlávka's minor planet group is recorded as asteroid belt^[9].
• 21539 Josefhlávka's parent astronomical body is recorded as Sun^[10].
• 21539 Josefhlávka's provisional designation is recorded as 1998 QO4^[11].
• 21539 Josefhlávka's time of discovery or invention is recorded as +1998-08-20T00:00:00Z^[12].
• 21539 Josefhlávka's Freebase ID is recorded as /m/043nrht^[13].
• 21539 Josefhlávka's JPL Small-Body Database SPK-ID is recorded as 20021539^[14].
• 21539 Josefhlávka's significant event is recorded as naming^[15].
• 21539 Josefhlávka's orbital eccentricity is recorded as {'amount': '+0.03'}^[16].
• 21539 Josefhlávka's orbital eccentricity is recorded as {'amount': '+0.0286547'}^[17].
• 21539 Josefhlávka's orbital eccentricity is recorded as {'amount': '+0.023096076253337'}^[18].
• 21539 Josefhlávka's absolute magnitude is recorded as {'amount': '+13.6'}^[19].
• 21539 Josefhlávka's absolute magnitude is recorded as {'amount': '+13.72'}^[20].
• 21539 Josefhlávka's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+13.17965'}^[21].
• 21539 Josefhlávka's orbital inclination is recorded as {'unit': 'Q28390', 'amount': '+13.18080738122743'}^[22].
• 21539 Josefhlávka's orbital period is recorded as {'unit': 'Q577', 'amount': '+5.66'}^[23].
• 21539 Josefhlávka's orbital period is recorded as {'unit': 'Q573', 'amount': '+2071.181326875895'}^[24].
• 21539 Josefhlávka's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+301.27030'}^[25].
• 21539 Josefhlávka's longitude of ascending node is recorded as {'unit': 'Q28390', 'amount': '+301.1537917410431'}^[26].
• 21539 Josefhlávka's semi-major axis of an orbit is recorded as {'unit': 'Q1811', 'amount': '+3.1775224'}^[27].

Body

Designation and Status

21539 Josefhlávka's instance of is recorded as asteroid^[4].

History and Context

Josef Hlávka is named after 21539 Josefhlávka^[6].

Why It Matters

21539 Josefhlávka ranks in the top 2% of asteroid entities by monthly Wikipedia readership (1 views/month).^[2] It has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.^[28] It is known by 10 alternative names across languages and contexts.^[29]