The exception is that from a nearly parabolic orbit
around one of the four giant planets one can inject the spacecraft at significant speed towards the inner solar system by performing a modest chemical burn near the planet and thus utilizing the Oberth effect.
A parabolic orbit
suggests that the comet is coming in from the Oort Cloud for a first-time swing by the Sun.
The comet is in a distant parabolic orbit
and was just past perihelion.
Noble and Bird immediately revelled in the 20/20 nature of this cricket, and raced to 56 in six overs before the latter saw his timbers shivered by Burkinshaw, but the likeable Luke had already smashed 25 in only 11 balls with another three trademark huge sixes launched into parabolic orbit
Its parabolic orbit
will take it far out into the Solar System only to return to the Earth's vicinity in more than a thousand years.
Stout in defence and possessing a quick eye, Luke waits for one in his slot and then launches it into parabolic orbit
. He faced only 47 balls and smote eight mighty sixes, but was once again let down by his team mates, none of whom appeared to realise this was a 50 over match.
C/2004 Q2 follows a nearly parabolic orbit
. With a future aphelion distance of about 1,000 a.u.
For now, an alternative possibility remains: Rather than circling the solar system at a fixed distance of about 42 AU, the body may have a parabolic orbit
that will send it into the inner solar system sometime in the middle of the next century.
But researchers continue to debate whether smaller NGC 5195 is on a parabolic orbit
around its pinwheel partner, with a single past encounter, or an elliptical orbit that has brought two or more close passages.
Despite some early suspicion that the newfound object was a giant comet with a parabolic orbit
or an asteroid associated with Neptune, the fact that Pluto had been tracked down during Lowell Observatory's dedicated search for a trans-Neptunian planet held sway with astronomical opinion.