Roberta (minor planet designation: 335 Roberta) is a large main belt asteroid. It was discovered on 1 September 1892, by German astronomer Anton Staus at Heidelberg Observatory.[3]Roberta was the 12th asteroid that was discovered using photography, and the only asteroid discovery made by Staus.[4]
Photometric observations of this asteroid from multiple sites during 2007 gave a light curve with a period of 12.054 ± 0.003 hours and a brightness variation of 0.13 ± 0.02 in magnitude. This agrees with a result reported in 1992, but differs from period estimates of 8.03 hours and 4.349 reported in 1987 and 2001, respectively.[5]
Under the SMASS classification taxonomy, this asteroid is listed as a B-type; a group that combines both the Tholen B and F types. The spectrum of this object suggests the presence of magnetite (Fe3O4), which gives it the spectrally-blue coloration that is a characteristic of this SMASS class. The spectrum of this asteroid also displays a band feature near 2.9 μm that indicate the presence of a hydrated mineral. This suggests that the asteroid has undergone significant water-based alteration.[2]
335 Roberta was identified as one of three asteroids that were likely to be a parent body for chondrites along with 449 Hamburga and 304 Olga.[6] All three asteroids were known to have low-albedo (not reflect as much light) and be close to "meteorite producing resonances".[6] Chrondrites are the most common type of meteor found on Earth, accounting for over 80% of all meteors.[7] They are named for the tiny spherical silicate particles that are found inside them (those particles are called chondrules).[7]
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^ abLunar and planetary science: abstracts of papers submitted to the ... Lunar and Planetary Science Conference, Volume 27, Part 1 - Lunar and Planetary Institute, Jan 1, 1996
^ ab"ASU - Chondrites". Archived from the original on 22 June 2019. Retrieved 31 August 2015.
Roberta (minor planet designation: 335Roberta) is a large main belt asteroid. It was discovered on 1 September 1892, by German astronomer Anton Staus...
astronomer. As a young man, he discovered the inner main-belt asteroid 335Roberta at Heidelberg Observatory in 1892. It was the 12th asteroid that was...
likely to be a parent body for chondrites along with 449 Hamburga and 335Roberta. All three asteroids were known to have low-albedo (not reflect as much...
were likely to be a parent body for chondrites along with 304 Olga and 335Roberta. All three asteroids were known to have low-albedo (not reflect as much...
Roberta "Bobbi" Sykes (16 August 1943 – 14 November 2010) was an Australian poet and author. She was a lifelong campaigner for Indigenous land rights...
Lou Rambeau (teleplay) Michael Wilding as David Saunders, Anna Lee as Roberta Saunders, Randy Boone as Pete Tanner April 19, 1963 (1963-04-19) Slawson...
Lovely to Look At (1952), with Grayson and based on the stage musical Roberta, was popular but lost money. MGM tried him in the adventure film Desperate...
Binkley, Roberta A. (2004). "The Rhetoric of Origins and the Other: Reading the Ancient Figure of Enheduanna". In Lipson, Carol; Binkley, Roberta A. (eds...
house. He meets older sisters Bobbie (Barbara Parkins), which is short for Roberta and Mike, which is short for Michelle. Bobbie asks Steve advice on boys...
UK chart position for Flaming Pie. Blaney 2007, p. 229. Harry 2002, pp. 335–336: Flaming Pie; Harry 2002, p. 807: Standing Stone; Harry 2002, p. 770:...
355. ISBN 978-0-690-00008-5. Tucker, Spencer C; Arnold, James; Wiener, Roberta (September 30, 2011). The Encyclopedia of North American Indian Wars, 1607–1890:...
vocalists Rachel Fury and Margaret Taylor. Durga McBroom, Lorelei McBroom and Roberta Freeman joined as extra backing vocalist mid way through the first leg...
ISBN 978-0-8153-2049-4. Seelinger Trites, Roberta (2009). "Journeys with Little Women". In Betsy Gould Hearne; Roberta Seelinger Trites (eds.). A Narrative...
persécutions du ive siècle. Louvain: Peeters. ISBN 9789042905405. Chesnut, Roberta C. (1978). "The Two Prosopa in Nestorius' Bazaar of Heracleides". The Journal...
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