525 Adelaide

525 Adelaide

Discovery
Discovered by	Joel Hastings Metcalf
Discovery site	Taunton, Massachusetts
Discovery date	21 October 1908
Designations
Alternative names	1908 EKa; 1930 FX; 1937 JG; 1955 SE1; 1955 UF
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	107.13 yr (39129 d)
Aphelion	2.4746 AU (370.19 Gm)
Perihelion	2.0157 AU (301.54 Gm)
Semi-major axis	2.2452 AU (335.88 Gm)
Eccentricity	0.10218
Orbital period	3.36 yr (1228.8 d)
Mean anomaly	311.640°
Mean motion	0° 17^m 34.728^s / day
Inclination	5.9953°
Longitude of ascending node	203.410°
Argument of perihelion	264.252°
Earth MOID	1.04134 AU (155.782 Gm)
Jupiter MOID	2.64002 AU (394.941 Gm)
Jupiter Tisserand parameter	3.617
Physical characteristics
Rotation period	19.967 h (0.8320 d)
Absolute magnitude (H)	12.53

525 Adelaide is an S-type asteroid belonging to the Flora family in the Main Belt.

The object A904 EB discovered March 14, 1904 by Max Wolf was named 525 Adelaide and was subsequently lost. Later, the object 1930 TA discovered October 3, 1930 by Sylvain Arend was named 1171 Rusthawelia. In those pre-computer days, it was not realized until 1958 that these were one and the same object. The name Rusthawelia was kept (and discovery credited to Arend); the name 525 Adelaide was reused for the object 1908 EKa discovered October 21, 1908 by Joel Hastings Metcalf.

References

1. "525 Adelaide (1908 EKa)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.

External links

• 525 Adelaide at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters