1541 Estonia

Estonia

Discovery
Discovered by	Yrjö Väisälä
Discovery site	Turku
Discovery date	12 February 1939
Designations
MPC designation	1541
Named after	Estonia
Alternative names	1939 CK
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	92.31 yr (33718 days)
Aphelion	2.9589506 AU (442.65271 Gm)
Perihelion	2.5762334 AU (385.39903 Gm)
Semi-major axis	2.767592 AU (414.0259 Gm)
Eccentricity	0.0691426
Orbital period	4.60 yr (1681.7 d)
Mean anomaly	260.47522°
Mean motion	0° 12^m 50.643^s / day
Inclination	4.875626°
Longitude of ascending node	1.453370°
Argument of perihelion	192.95394°
Earth MOID	1.57501 AU (235.618 Gm)
Jupiter MOID	2.0034 AU (299.70 Gm)
Jupiter Tisserand parameter	3.330
Physical characteristics
Mean radius	10.10±0.65 km
Rotation period	10.1 h (0.42 d)
Geometric albedo	0.1434±0.020
Absolute magnitude (H)	11.4

1541 Estonia (1939 CK) is a main-belt asteroid discovered on February 12, 1939, by Yrjö Väisälä at Turku. It was named after the country of Estonia.

References

1. "1541 Estonia (1939 CK)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 27 April 2016.

External links

• JPL Small-Body Database Browser on 1541 Estonia
• 1541 Estonia at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters