(11433) Gemmafrisius
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Asteroid (11433) Gemmafrisius |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Asteroid family | Hertha family |
| Major semi-axis | 2.4205 AU |
| eccentricity | 0.1586 |
| Perihelion - aphelion | 2.0367 AU - 2.8044 AU |
| Inclination of the orbit plane | 3.2115 ° |
| Length of the ascending node | 59.6409 ° |
| Argument of the periapsis | 141.9211 ° |
| Time of passage of the perihelion | February 8, 2021 |
| Sidereal period | 3.77 a |
| Physical Properties | |
| Medium diameter | 3.390 km (± 0.152) |
| Albedo | 0.185 (± 0.045) |
| Absolute brightness | 14.5 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | October 16, 1977 |
| Another name | 3474 T-3 , 1953 FB 1 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(11433) Gemmafrisius is an asteroid of the inner main belt , which was discovered on October 16, 1977 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery took place during the 3rd Trojan survey, during which Tom Gehrels surveyed field plates recorded by the 120 cm Oschin Schmidt telescope of the Palomar observatory at the University of Leiden , 17 years after the start of the Palomar-Leiden- Surveys . Unconfirmed sightings of the asteroid had already been made in March 1953 under the provisional designation 1953 FB 1 at the State Observatory in Heidelberg-Königstuhl .
The asteroid belongs to the Nysa group, a group of asteroids named after (44) Nysa (also called the Hertha family, after (135) Hertha ). It is in a 1: 2 orbit resonance with the planet Mars .
The mean diameter of the asteroid was calculated to be 3.390 km (± 0.152).
(11433) Gemmafrisius was named on April 9, 2009 after the physician , astronomer, mathematician , cartographer and instrument maker Jemme Reinersz (1508–1555), who is known under the name Gemma Frisius . A lunar crater in the southern lunar hemisphere was named after Gemma Frisius as early as 1935 : lunar crater Gemma Frisius .
Web links
- (11433) Gemmafrisius in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (11433) Gemmafrisius in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (11433) Gemmafrisius according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (11433) Gemmafrisius at the IAU Minor Planet Center (English)
- ↑ Asteroids inside the resonance 1: 2 with Mars . Table by Tabare Gallardo (English)
- ^ The lunar crater Gemma Frisius in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS