Timandra ( minor planet designation: 603 Timandra) is a

minor planet According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet. Before 2006, the IAU officially used the term ''mino ...

orbiting the

Sun The Sun is the star at the center of the Solar System. It is a nearly perfect ball of hot plasma, heated to incandescence by nuclear fusion reactions in its core. The Sun radiates this energy mainly as light, ultraviolet, and infrared radi ...

that was discovered by American astronomer

Joel Hastings Metcalf Joel Hastings Metcalf (January 4, 1866 – February 23, 1925) was an American astronomer, humanitarian and minister. Reverend Metcalf graduated from Harvard Divinity School in 1892. He served as a Unitarian minister in Burlington, Vermont and i ...

on February 16, 1906, in

Taunton, Massachusetts Taunton is a city in Bristol County, Massachusetts, United States. It is the seat of Bristol County. Taunton is situated on the Taunton River which winds its way through the city on its way to Mount Hope Bay, to the south. At the 2020 cen ...

. Photometric observations of this asteroid at the Organ Mesa Observatory in

Las Cruces, New Mexico Las Cruces (; "the crosses") is the second-largest city in the U.S. state of New Mexico and the seat of Doña Ana County. As of the 2020 census the population was 111,385. Las Cruces is the largest city in both Doña Ana County and southern Ne ...

, during 2010 gave a

light curve In astronomy, a light curve is a graph of light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y axis and with time on the x axis. The light is usually in a particular frequ ...

with a long rotation period of 41.79 ± 0.02 hours and a brightness variation of 0.10 ± 0.02 in

magnitude Magnitude may refer to: Mathematics *Euclidean vector, a quantity defined by both its magnitude and its direction *Magnitude (mathematics), the relative size of an object *Norm (mathematics), a term for the size or length of a vector *Order of ...

References

External links

* * Background asteroids Timandra 19060216 Timandra {{beltasteroid-stub