638 Moira, also known as A907 JG, is a minor planet orbiting the Sun. First observed in 1906, 638 Moira was discovered to be an orbital body in 1907 by Joel Hastings Metcalf in Taunton, England. 638 Moira is a little over 59.5 km across and rotates once every 10 hours. Its farthest point from the sun is a little over 3au during its 4.5 year orbit, and it is classed as an L-type asteroid (SMASSII).

638 Moira
Discovery
Discovered byJoel Hastings Metcalf
Discovery siteTaunton, Massachusetts
Discovery date5 May 1907
Designations
(638) Moira
Pronunciation/ˈmɔɪrə/
Named after
Moirae
1907 ZQ
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc110.22 yr (40257 d)
Aphelion3.1701 AU (474.24 Gm)
Perihelion2.3005 AU (344.15 Gm)
2.7353 AU (409.20 Gm)
Eccentricity0.15896
4.52 yr (1652.4 d)
54.7967°
0° 13m 4.332s / day
Inclination7.7123°
103.208°
128.586°
Physical characteristics
32.72±0.7 km
9.875 h (0.4115 d)
0.060
10.0

References

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  1. ^ "638 Moira (1907 ZQ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
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