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189 Phthia

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Discovered by  C. H. F. Peters
Observation arc  136.18 yr (49739 d)
Perihelion  2.3597 AU (353.01 Gm)
Discovered  9 September 1878
Discovery site  Litchfield Observatory
Discovery date  9 September 1878
Aphelion  2.5415 AU (380.20 Gm)
Semi-major axis  2.4506 AU (366.60 Gm)
Orbits  Sun
Asteroid group  Asteroid belt
Discoverer  Christian Heinrich Friedrich Peters
Spectral type  S-type asteroid (Asteroid spectral types)
Similar  188 Menippe, 167 Urda, 196 Philomela, 165 Loreley, 264 Libussa

189 Phthia is a bright-coloured, rocky main belt asteroid that was discovered by German-American astronomer Christian Heinrich Friedrich Peters on September 9, 1878 in Clinton, New York and named after Phthia, a region of Ancient Greece.

Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico during 2008 gave a light curve with a period of 22.346 ± 0.001 hours and a brightness variation of 0.26 ± 0.02 in magnitude.

References

189 Phthia Wikipedia


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