638 Moira

638 Moira

Discovery
Discovered by	Joel Hastings Metcalf
Discovery site	Taunton, Massachusetts
Discovery date	5 May 1907
Designations
Alternative names	1907 ZQ
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	110.22 yr (40257 d)
Aphelion	3.1701 AU (474.24 Gm)
Perihelion	2.3005 AU (344.15 Gm)
Semi-major axis	2.7353 AU (409.20 Gm)
Eccentricity	0.15896
Orbital period	4.52 yr (1652.4 d)
Mean anomaly	54.7967°
Mean motion	0° 13^m 4.332^s / day
Inclination	7.7123°
Longitude of ascending node	103.208°
Argument of perihelion	128.586°
Earth MOID	1.29839 AU (194.236 Gm)
Jupiter MOID	1.86084 AU (278.378 Gm)
Jupiter Tisserand parameter	3.321
Physical characteristics
Mean radius	32.72±0.7 km
Rotation period	9.875 h (0.4115 d)
Geometric albedo	0.0496±0.002
Absolute magnitude (H)	10.0

638 Moira is a minor planet orbiting the Sun.

References

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

External links

• Discovery Circumstances: Numbered Minor Planets
• NASA's Jet Propulsion Laboratory Datasite page on this space object
• 638 Moira at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters