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Euterpe , also known with number 27, is a medium asteroid of about 262 km of diameter. Its orbit, as you can see in the graph down is between the orbit of Mars & Jupiter. Its orbital eccentricity of 0,171999 is elevated and typical one when belonging to the asteroid group. Euterpe comes near to the Sun to a minimum range of 1.94 U.A. (astronomical Units) and was weeks after its passage by the perihelion when it was possible to be identified with a 9.6 magnitude of visible with small telescopes; however, in the aphelion or moved away point more of his orbit it is located to 2.75 U.A. Its orbital period, or the time that takes in giving a return around the Sun is of 3.59 years, & its period of rotation on its axis is of eight hours. It has an absolute magnitude of 7,00; a coefficient of 0.15 magnitude of & an index of color (B-V) of 0,87.
The orbit of Euterpe is inclined with respect to the ecliptic in 1,54º, a very low inclination to be an asteroid and pro as much is located always in the zodiacales constellations, & when it was located was closely together in the constellation of Leo close to the constellation of Virgo, during that night Euterpe night was to 1.25 U.A. of the Earth planet. It was discovered the November 8th, 1853 by astronomer J. R. Hind in London, United Kingdom.
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| Euterpe during year 2002 was located in the constellations of Leo & Virgo. At March 17th, 2002 happened to 59 ' to the north of s Leonis and returned to be in conjunction with this star June 1st, only 9 ' to the north but already with a magnitude of 11,5; enough weaker and moved away already of the opposition. Its magnitude during the opposition was of only 9.6 if we considered its size and its very eccentric orbit, therefore, with a slight difficulty to locate it with any telescope. |
With the telescope that I have at the moment, a refractor of 1400mm. of focal length and 90mm. of diameter I observed and I located Euterpe in the second night of observation. In the first night, March 19th, I observed the field that is indicated down and I considered that it had been located, but with surprise I observed, in a the second night, March 20th that the star at issue was not but a weak star of similar magnitude but not the Euterpe asteroid . Observing the star field again, already yes I could locate the asteroid to 22:44 (U.T.). And finally, the following day I could observe the displacement in an arc a about 10 ' the northwest of its previous position.
The climatologic conditions were excellent, but the lunar luminosity made difficult to something its location in the third night that was in phase of first quarter in the constellation of Taurus. Therefore, we can indicate that the date of discovery & location of Euterpe was made to the 22:44 (U.T.) of the March 20th, 2002, to few hours of the spring equinox.
Thanks to the program of Guide version 7,0 and with the graph that you can see down, could be located with certain difficulty to the Euterpe asteroid in the second night of observation.
On the other hand, down, by means of a program in Java which I have found in the network, with the courtesy of Osamu Ajiki de AstroArts & Ron Baalke of the JPL, you can see the orbit of Euterpe as well as its distance in relation to the Sun and the Earth and its position with respect to the Solar System for any date.
 In Greek mythology Euterpe or Euterph
musas was one of the nine, the other eight were: Caliope of the poetry, Clio
of history, Erato of the love, Melpomene
of the tragedy, Tersicore of the dance, Thalia of the comedy, Uranian
of Astronomía and Polynia of geometry. According to some, she would have been she who generated with the Estrimón God-river the Thracian hero Reso , died in the war of Troya. Delayed authors relate to eta musa to the art to touch flute. |
Musa of the music |
Masm(Last update 08.16.2006)
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