816 Juliana

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.

816 Juliana

A three-dimensional model of 816 Juliana based on its light curve
Discovery
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]

References

1. "816 Juliana (1916 YV)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 19 July 2020. Retrieved 4 May 2016.
2. Lutz D. Schmadel (2011). Dictionary of Minor Planet Names. Addendum to Fifth Edition: 2006–2008. Springer. ISBN 978-3-642-01966-1.

External links

• 816 Juliana at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 816 Juliana at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters