49 Pales

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49 Pales
Discovery[1]
Discovered by Hermann Goldschmidt
Discovery site Paris Observatory
Discovery date September 19, 1857
Designations
MPC designation 49
Named after
Pales
Main belt [2]
Orbital characteristics[3]
Epoch November 30, 2008
Aphelion 3.8065 AU
Perihelion 2.3813 AU
3.09392 AU
Eccentricity 0.230323
1987.75 days (5.44 years)
274.69°
Inclination 3.18°
286.135°
109.804°
Physical characteristics
Dimensions 149.80 ± 3.8 km
Mean diameter[4]
Mass 2.69×1018 kg[5]
10.42 ± 0.02[6] hours
Albedo 0.0597 ± 0.003[4]
Spectral type
C[7]
7.8[8]

49 Pales /ˈplz/ is a large, dark main-belt asteroid. It was discovered by German-French astronomer Hermann Goldschmidt on September 19, 1857 from his balcony in Paris.[1] The asteroid is named after Pales, the goddess of shepherds in Roman mythology. Since it was discovered on the same night as 48 Doris, geologist Élie de Beaumont suggested naming the two "The Twins".[9]

Pales has been studied by radar.[10] Photometric observations of this asteroid from the Torino Observatory during 1977 gave a light curve with a period of 10.42 ± 0.02 hours and a brightness variation of 0.18 in magnitude. The curve appeared to show a secondary minima.[6] The shape of the curve has a similar appearance to the light curve of binary star Algol, suggesting that this may be a binary asteroid system.[11]

References

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External links

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