816 Juliana is a minor planet orbiting the Sun. It measures 59.85k in diameter. It was discovered on 8 February 1916 by Max Wolf at the Landessternwarte Heidelberg-Königstuhl Observatory in Heidelberg, Germany.
![]() A three-dimensional model of 816 Juliana based on its light curve | |
Discovery | |
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Discovered by | Max Wolf |
Discovery site | Heidelberg Observatory |
Discovery date | 8 February 1916 |
Designations | |
MPC designation | (816) Juliana |
Alternative designations | 1916 YV |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 100.18 yr (36592 d) |
Aphelion | 3.3307 AU (498.27 Gm) |
Perihelion | 2.6721 AU (399.74 Gm) |
Semi-major axis | 3.0014 AU (449.00 Gm) |
Eccentricity | 0.10971 |
Orbital period (sidereal) | 5.20 yr (1899.2 d) |
Mean anomaly | 104.02° |
Mean motion | 0° 11m 22.38s / day |
Inclination | 14.330° |
Longitude of ascending node | 127.863° |
Argument of perihelion | 21.017° |
Physical characteristics | |
Mean radius | 29.925±0.6 km |
Synodic rotation period | 10.58 h (0.441 d) |
Geometric albedo | 0.0311±0.001 |
Absolute magnitude (H) | 10.4 |
Wolf probably chose the name to honour Princess Juliana (later Queen Juliana of the Netherlands); he had previously named 392 Wilhelmina after her mother.[2]
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Minor planets |
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