(44597) Thoreau

Asteroid (44597) Thoreau
Properties of the orbit ( animation ) Epoch: March 23, 2018 ( JD 2,458,200.5)
Orbit type	Inner main belt asteroid
Major semi-axis	2.2538 AU
eccentricity	0.1180
Perihelion - aphelion	1.9878 AU - 2.5197 AU
Inclination of the orbit plane	5.0442 °
Length of the ascending node	208.4908 °
Argument of the periapsis	7.4863 °
Time of passage of the perihelion	January 12, 2019
Sidereal period	3.38 a
Mean orbital velocity	19.84 km / s
Physical Properties
Absolute brightness	15.4 mag
history
Explorer	Jana Tichá , Miloš Tichý
Date of discovery	August 6, 1999
Another name	1999 PW
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(44597) Thoreau is an asteroid of the main inner belt that was discovered on August 6, 1999 by the Czech astronomer couple Jana Tichá and Miloš Tichý at the Kleť observatory ( IAU code 046) near Český Krumlov .

Mean solar distance ( major semi-axis ), eccentricity and inclination of the orbit plane of the asteroid are similar to the orbital data of the members of the Flora family, a large group of asteroids named after (8) Flora . Asteroids of this family move in a 4: 9 orbital resonance with the planet Mars around the sun . The group is also called the Ariadne family, after the asteroid (43) Ariadne .

(44597) Thoreau was named on September 10, 2003 after the American writer and philosopher Henry David Thoreau (1817-1862). Jana Tichá had visited Thoreau's cabin on Walden Pond in Concord , Massachusetts . As early as 1985, an impact crater on the northern hemisphere of the planet Mercury was named after Henry David Thoreau: Mercury crater Thoreau .

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