1524 Joensuu
main-belt asteroid
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Summary
1524 Joensuu is an asteroid[1]. It has Wikipedia articles in 36 language editions, a strong signal of global cultural recognition.[2]
Key Facts
- Discoverer or inventor: Yrjö Väisälä[3]
- Site of astronomical discovery: Iso-Heikkilä Observatory[4]
- Named after: Joensuu[5]
- Follows: 1523 Pieksämäki[6]
- Followed by: 1525 Savonlinna[7]
- Minor planet group: asteroid belt[8]
- Parent astronomical body: Sun[9]
- Provisional designation: 1931 EL[10], 1933 QO[11], 1936 DG[12], 1939 SB[13], 1958 DH1[14]
- Time of discovery or invention: September 18, 1939[15]
- Significant event: naming[16]
- Orbital eccentricity: 0.12[17], 0.1219758[18], 0.1196878304094044[19]
- Absolute magnitude: 10.7[20], 10.79[21]
- Orbital inclination: 12.68755 degree[22], 12.69293206993671 degree[23]
- Orbital period: 5.48 years[24], 2004.157120495938 day[25]
- Rotation period: 9.276 hour[26]
- Longitude of ascending node: 347.71375 degree[27], 347.6240694999848 degree[28]
- Semi-major axis of an orbit: 3.1084081 astronomical unit[29], 3.110920356632205 astronomical unit[30]
- Apoapsis: 3.488 astronomical unit[31], 3.483259664693965 astronomical unit[32]
- Periapsis: 2.7292574 astronomical unit[33], 2.738581048570446 astronomical unit[34]
- Argument of periapsis: 2.67385 degree[35], 1.078047364953754 degree[36]
- Mean anomaly: 124.75702 degree[37], 269.7480719111988 degree[38]
- Diameter: 45.056 km[39]
- Albedo: 0.064[40]
- Epoch: November 21, 2025[41]
- Time of periapsis: 2461502.9417897714 Julian day[42]
Why It Matters
1524 Joensuu is known by 15 alternative names across languages and contexts.[43]