Pales/ˈpeɪliːz/ (minor planet designation: 49 Pales) is a large, dark main-belt asteroid. It was discovered by German-French astronomer Hermann Goldschmidt on 19 September 1857 from his balcony in Paris.[11] 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".[12]
The orbit of this asteroid has close to a 2:1 commensurability with the orbit of Jupiter.[13] On 17 January 2000, this minor planet was observed occulting a 9th magnitude star from seven locations. These timed chords across the silhouette allowed an estimate to be made of the object's dimensions,[14] yielding a cross-section of 251 km × 160 km.[15]
Pales has been studied by radar.[16] It has a rotation period of 20.705±0.002 h and a lightcurve with an amplitude of 0.18 mag. The lightcurve shows 4 maxima and 4 minima per cycle, suggesting an irregular shape.[7] The previously accepted period of 10.42 hours with 2 maxima and minima per cycle[17] was proven to be wrong by Pilcher in 2016, showing that correct rotation periods still have not been found for all low-numbered asteroids.[8]
^Noah Webster (1884) A Practical Dictionary of the English Language
^"(49) Pales". AstDyS. Italy: University of Pisa. Archived from the original on 27 February 2012. Retrieved 29 December 2008.
^ abCite error: The named reference SIMPS was invoked but never defined (see the help page).
^Jim Baer (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 29 January 2009. Retrieved 29 December 2008.
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^ abCite error: The named reference Pilcher2017 was invoked but never defined (see the help page).
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^"Discovery Circumstances: Numbered Minor Planets (1)–(5000)". IAU: Minor Planet Center. Archived from the original on 2 February 2009. Retrieved 29 December 2008.
^Cite error: The named reference Schmadel2003 was invoked but never defined (see the help page).
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Pales /ˈpeɪliːz/ (minor planet designation: 49Pales) is a large, dark main-belt asteroid. It was discovered by German-French astronomer Hermann Goldschmidt...
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Oceanid in Greek mythology. Since Doris was discovered on the same night as 49Pales, de Deaumont suggested naming the two "The Twins". An occultation on 19...
Pilcher, Frederick (October 2018), "New Lightcurves of 33 Polyhymnia, 49Pales, 289 Nenetta 504 Cora, and 821 Fanny", Bulletin of the Minor Planets Section...
"Photoelectric photometry and rotation periods of three large and dark asteroids - 49Pales, 88 Thisbe and 92 Undina", Astronomy and Astrophysics Supplement Series...
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ISSN 0004-6361. Pilcher, Frederick (July 2017). "Rotation Period Determinations for 49Pales, 96 Aegle, 106 Dione 375 Ursula, and 576 Emanuela". The Minor Planet Bulletin...
2018. Pilcher, Frederick (July 2017). "Rotation Period Determinations for 49Pales, 96 Aegle, 106 Dione 375 Ursula, and 576 Emanuela". The Minor Planet Bulletin...
Pilcher, Frederick (October 2018). "New Lightcurves of 33 Polyhymnia, 49Pales, 289 Nenetta 504 Cora, and 821 Fanny" (PDF). Minor Planet Bulletin. 45...
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