1453 Fennia

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Fennia
Discovery
Discovered by Vaisala, Y.
Discovery site Turku
Discovery date 8 March 1938
Designations
MPC designation 1453
Named after
Finland
1938 ED1
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 78.04 yr (28504 days)
Aphelion 1.9508111 AU (291.83719 Gm)
Perihelion 1.8436697 AU (275.80906 Gm)
1.897240 AU (283.8231 Gm)
Eccentricity 0.0282361
2.61 yr (954.51 d)
282.31178°
0° 22m 37.76s / day
Inclination 23.67528°
7.090332°
254.44215°
Earth MOID 0.876603 AU (131.1379 Gm)
Jupiter MOID 3.04724 AU (455.861 Gm)
Jupiter Tisserand parameter 3.848
Physical characteristics
Mean radius
3.615±0.2 km
4.4121 h (0.18384 d)
0.2494±0.032
12.5

1453 Fennia (provisional designation: 1938 ED1) is an inner main belt asteroid. It was discovered on March 8, 1938, by the Finnish astronomer Yrjö Väisälä at Iso-Heikkilä Observatory in Turku, Finland. The asteroid's name is the Latin word for Finland.[2]

In 2007, a team of astronomers made photometric observations of Fennia, and discovered that it is orbited by a moon. The moon is at least a quarter the size of Fennia itself, and has an orbital period of approximately 23 hours. The team also found that Fennia has a rotation period of 4.4 hours and is likely spheroidal in shape.[3]

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