(19994) Tresini
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Asteroid (19994) Tresini |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt asteroid |
| Asteroid family | Gefion family |
| Major semi-axis | 2.7755 AU |
| eccentricity | 0.1768 |
| Perihelion - aphelion | 2.2849 AU - 3.2661 AU |
| Inclination of the orbit plane | 8.0766 ° |
| Length of the ascending node | 307.2961 ° |
| Argument of the periapsis | 70.3438 ° |
| Time of passage of the perihelion | 17th June 2018 |
| Sidereal period | 4.62 a |
| Mean orbital velocity | 17.88 km / s |
| Physical Properties | |
| Rotation period | 9.660 h (± 0.025) |
| Absolute brightness | 13.4 mag |
| history | |
| Explorer | Lyudmyla Karachkina , Galina Kastel |
| Date of discovery | October 13, 1990 |
| Another name | 1990 TJ 15 , 1999 RW 103 |
| 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. | |
(19994) Tresini is an asteroid of the main middle belt , which was discovered by the Soviet astronomers Lyudmyla Karachkina and Galina Kastel on October 13, 1990 at the Crimean Observatory in Nautschnyj ( IAU code 095).
The asteroid belongs to the Gefion family, a group of asteroids of the central main belt named after (1272) Gefion . The group used to be called the Ceres family (after (1) Ceres , Vincenzo Zappalà 1995) and the Minerva family (after (93) Minerva , AstDyS-2 database). The timeless (non- osculating ) orbital elements of (19994) Tresini are almost identical to those of the smaller one, assuming the absolute brightness of 16.4 compared to 13.4, asteroids (350913) 2002 RR 267 . The orbit of (19994) Tresini around the Sun is influenced by the much larger asteroid (15) Eunomia .
The period of rotation of the asteroid was examined on November 6th and 7th, 2013 by Amadeo Aznar in Aras de los Olmos , Spain , and determined to be 9.660 h (± 0.025).
(19994) Tresnini was named on March 18, 2003 after Domenico Trezzini (* around 1670; † 1734), a Swiss architect who was commissioned by Russian Tsar Peter the Great to plan several buildings there on the occasion of the founding of the new capital Saint Petersburg . The dedication highlighted the Peter and Paul Fortress , the Summer Palace of Peter the Great and the Twelve Colleges, a block of ministerial buildings now used by the St. Petersburg State University . Tresini is a Russification of its Italian name.
Web links
- (19994) Tresini in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (19994) Tresini in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (19994) Tresini according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ^ Adrián Galád , Bill Gray: Interasteroidal approaches good for mass determination . Comenius University Bratislava (English)
- ↑ Phased Plot: 19994 Tresini (English)
- ↑ The asteroid (2720) Pyotr Pervyj was named after Peter the Great .