452 Hamiltonia

Orbital characteristics [ftp://ftp.lowell.edu/pub/elgb/astorb.html 1]
Orbit Orbit In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System...  type	Main belt
Semimajor axis	2.8464496 AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
Perihelion distance	2.8188874 AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
Aphelion distance	2.87401177 AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
Orbital period Orbital period The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...	4.8025 years (1754.0771 days)
Inclination Inclination Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit...	3.22715°
Eccentricity	0.009683
Discoverer	James Edward Keeler, 1899

452 Hamiltonia is an asteroid

Asteroid

Asteroids are a class of small Solar System bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones...

. It was discovered by James Edward Keeler on December 6, 1899, but was then lost until 1987. Its provisional name was 1899 FD. The asteroid is named for Mount Hamilton

Mount Hamilton (California)

Mount Hamilton is a mountain in California's Diablo Range, in Santa Clara County, California. Mount Hamilton, at is the tallest mountain overlooking Silicon Valley, and is the site of Lick Observatory, the first permanently occupied mountain-top observatory. The various summits along its...

, the site of Lick Observatory

Lick Observatory

The Lick Observatory is an astronomical observatory, owned and operated by the University of California. It is situated on the summit of Mount Hamilton, in the Diablo Range just east of San Jose, California, USA...

 where Keeler was working when he discovered the asteroid.

L. K. Kristensen at Aarhus University rediscovered 452 Hamiltonia along with 1537 Transylvania

1537 Transylvania

1537 Transylvania is a main-belt asteroid discovered on August 27, 1940 by G. Strommer at Budapest.It was a lost asteroid until L. K. Kristensen at Aarhus University rediscovered it along with 452 Hamiltonia along with numerous other small objects in 1981- External links :...

 along with numerous other small objects in 1981.
These rediscoveries left only nine numbered minor planets unobserved since their discoveries: 330 Adalberta

330 Adalberta

330 Adalberta is a small main-belt asteroid.It was discovered by Max Wolf on February 2, 1910, in Heidelberg.An object discovered March 18, 1892, by Max Wolf with provisional designation "1892 X" was named 330 Adalberta, but was lost and never recovered. In 1982, it was determined that the...

, (473) Nolli, (719) Albert, (724) Hapag, (843) Nicolaia, (878) Mildred, (1009) Sirene, (1026) Ingrid, and (1179) Mally. However, by the mid 1980s the only remaining lost asteroids

Lost asteroids

Lost asteroids or lost planets are asteroids that observers lose track of after discovering. Many early lost asteroids were rediscovered in the 1980s and 1990s, but a number of asteroids and other types of small Solar System bodies continue to be lost...

of this group were (719) Albert (rediscovered in 2000), (724) Hapag (rediscovered in 1988), and (878) Mildred (rediscovered in 1991).