Supriya Ghosh (Editor)

149 Medusa

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Discovered by  Henri Joseph Perrotin
Minor planet category  Main belt
Aphelion  2.3169 AU (346.60 Gm)
Named after  Medusa
Spectral type  S-type asteroid
Discovery date  21 September 1875
Observation arc  124.55 yr (45493 d)
Discovered  21 September 1875
Orbits  Sun
Discovery site  Toulouse Observatory
149 Medusa httpsuploadwikimediaorgwikipediacommonsthu
Perihelion  2.03252 AU (304.061 Gm)
Discoverer  Henri Joseph Anastase Perrotin
Similar  167 Urda, 188 Menippe, 193 Ambrosia, 162 Laurentia, 157 Dejanira

149 Medusa is a bright-coloured, stony main-belt asteroid that was discovered by French astronomer J. Perrotin on September 21, 1875, and named after the Gorgon Medusa, a snake-haired monster in Greek mythology.

When it was discovered, Medusa was by far the smallest asteroid found (although this was not known at that time). Since then, many thousands of smaller asteroids have been found. It was also the closest asteroid to the Sun discovered up to that point, beating the long-held record of 8 Flora. It remained the closest asteroid to the Sun until 433 Eros and 434 Hungaria were found in 1898, leading to the discovery of two new families of asteroids inward from the 4:1 Kirkwood gap which forms the boundary of the main belt.

Photometric observations of this asteroid at the Organ Mesa Observatory in Las Cruces, New Mexico, during 2010 gave a light curve with a rather long rotation period of 26.038 ± 0.002 hours and a brightness variation of 0.56 ± 0.03 in magnitude.

References

149 Medusa Wikipedia


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