1453 Fennia

Fennia

Discovery
Discovered by	Vaisala, Y.
Discovery site	Turku
Discovery date	8 March 1938
Designations
MPC designation	1453
Named after	Finland
Alternative names	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)
Semi-major axis	1.897240 AU (283.8231 Gm)
Eccentricity	0.0282361
Orbital period	2.61 yr (954.51 d)
Mean anomaly	282.31178°
Mean motion	0° 22^m 37.76^s / day
Inclination	23.67528°
Longitude of ascending node	7.090332°
Argument of perihelion	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
Rotation period	4.4121 h (0.18384 d)
Geometric albedo	0.2494±0.032
Absolute magnitude (H)	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]

References

1. "1453 Fennia (1938 ED1)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 27 April 2016.
2. Lutz D. Schmadel, Dictionary of Minor Planet Names: Addendum to Fifth Edition: 2006 - 2008.
3. Central Bureau for Astronomical Telegrams, Electronic Telegram No. 1150.

External links

• JPL Small-Body Database Browser on 1453 Fennia

• 1453 Fennia at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters