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524522 Zoozve (/ ˈ z uː z v eɪ / ⓘ; provisional designation 2002 VE 68) is a sub-kilometer sized asteroid and temporary quasi-satellite of Venus. [5] Discovered in 2002, it was the first such object to be discovered around a major planet in the Solar System .
A quasi-satellite is an object in a specific type of co-orbital configuration (1:1 orbital resonance) with a planet (or dwarf planet) where the object stays close to that planet over many orbital periods. A quasi-satellite's orbit around the Sun takes the same time as the planet's, but has a different eccentricity (usually greater), as shown in ...
Venus also has a quasi-satellite, 524522 Zoozve. This asteroid is also a Mercury- and Earth-crosser ; it seems to have been a "companion" to Venus for the last 7,000 years or so only, and is destined to be ejected from this orbital arrangement about 500 years from now.
It is a quasi-satellite of Earth until around 2600. [4] On 14 April 2004 (with less than a 1-day observation arc), the Sentry Risk Table showed 180 virtual impactors. [5] It was removed from the Sentry Risk Table 2 days later on 16 April 2004. [6] Cardea now has a well determined orbit with an observation arc of 12 years.
Neith is a hypothetical natural satellite of Venus reportedly sighted by Giovanni Cassini in 1672 and by several other astronomers in following years. It was 'observed' up to 30 times by astronomers until 1770, when there were no new sightings and it was not found during the transit of Venus in 1761 and 1769. [1] [2]
Quasi-satellite; Metadata. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
The orbit of a satellite of Earth fundamentally depends on the gravity of the Earth–Moon system, whereas the orbit of a co-orbiting object would negligibly change if Earth and the Moon were suddenly removed because a quasi-satellite is orbiting the Sun on an Earth-like orbit in the vicinity of Earth.
Many TNOs are often just assumed to have Pluto's density of 2.0 g/cm 3, but it is just as likely that they have a comet-like density of only 0.5 g/cm 3. [ 4 ] For example, if a TNO is incorrectly assumed to have a mass of 3.59 × 10 20 kg based on a radius of 350 km with a density of 2 g/cm 3 but is later discovered to have a radius of only 175 ...