- Source: 154 Bertha
154 Bertha is a main-belt asteroid. It was discovered by the French brothers Paul Henry and Prosper Henry on 4 November 1875, but the credit for the discovery was given to Prosper. It is probably named after Berthe Martin-Flammarion, sister of the astronomer Camille Flammarion.
Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado in during 2007 produced a light curve with a period of 22.30 ± 0.03 hours and a brightness range of 0.10 ± 0.02 in magnitude. A 1998 measurement gave a value of 27.6 hours, which doesn't fit the PDO data. In 2011, observations from the Organ Mesa Observatory in Las Cruces, New Mexico were used to determine a rotation period of 25.224 ± 0.002 hours with a brightness variability of 0.10 ± 0.01 magnitude, ruling out previous studies.
This is classified as a C-type asteroid and it has an estimated diameter of about 187 km.
References
External links
Lightcurve plot of 154 Bertha, Palmer Divide Observatory, B. D. Warner (2007)
Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
Dictionary of Minor Planet Names, Google books
Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
154 Bertha at AstDyS-2, Asteroids—Dynamic Site
Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
154 Bertha at the JPL Small-Body Database
Kata Kunci Pencarian:
- Daftar planet minor/101–200
- Perang Dunia I
- Daftar episode Lapor Pak!
- Daftar planet minor: 1–1000
- Adelaide dari Susa
- Molibdenum
- Daftar telenovela Televisa (1960-an)
- Offa
- 154 Bertha
- Bertha (disambiguation)
- Paul Henry and Prosper Henry
- 154 (number)
- 177 Irma
- List of minor planets: 1–1000
- 153 Hilda
- Meanings of minor-planet names: 1–1000
- 200 Dynamene
- List of minor planets named after people
