Orbital simulations are used to determine what orbital parameters (including orbital distance) produce the observations seen by astronomers.

The hijackers moved to the rear of the plane.

International Tropical Timber Agreement. The International Tropical Timber Council, the governing body of ITTO, held its thirty sixth and thirty seventh sessions in 2004, both attended by the Forum secretariat.

Airplane!

It is one of the neglected tropical diseases.

Distribution These fishes are distributed in tropical America, tropical Africa, southeastern and eastern Asia, East Indies, and Australia.

The plane crashed.

The airplane made a safe landing.

Let's play volleyball.

The orbiter entered Venus orbit on October 20, 1975.

It is a measure of the actual degree of cleanliness of the orbital zone.

The jet landed at Tokyo.

My plane leaves at six o'clock.

That fighter plane dropped a bomb.

That fighter plane dropped a bomb.

When coming onto the runway, the taxi lights go off and the landing lights and strobes go on.

(iii) Kilometres, minutes and degrees as the standard units for basic orbital parameters

Guava, a berry like fruit, is often called the apple of the tropics .

See that? They won't let me on a plane with that, but they'll give it to me on the plane.

The software reads the aircraft's current position, and then controls a Flight Control System to guide the aircraft.

What time will the flight arrive in Tokyo?

The plane arrived exactly at nine.

The plane was late because of the bad weather.

The Fear Profiteers

Hurry up, or you'll miss your plane.

Do you like playing volleyball?

The aircraft was unable to maintain its course, and the test was terminated before the X51 A's Scramjet engine was ignited.

However, perturbations cause the orbital elements to change over time.

Two particular priorities should be to mount a major global initiative on research in tropical diseases and to provide additional support to the Consultative Group on International Agricultural Research (CGIAR) for research on tropical agriculture.

I think he's going to hijack the plane with some ice cream.

Paul Moller on the Skycar

The plane took off at exactly ten o'clock.

No one survived the plane crash.

It was the last communication with the aircraft.

The fighter aircraft were equipped with incendiary bombs.

The aircraft underwent a major overhaul on 16 April 2009 and at the time of the accident had accumulated 18,870 flying hours.

The tropics is a region of the Earth surrounding the Equator.

The square of a satellite's orbital period is proportional to the cube of its average distance from the planet.

We put the folded airplane on the balloon it took about three hours to get up there and then we released it on command at 103,000 feet, and we deploy the airplane and everything works perfectly.

This may explain some stories about flying ships or coastal cities in the sky, as described by some polar explorers.

And it's really like the kid playing the airplane.

I walked to the back of the plane, I sat down, and a thought came to me.

There were 150 passengers on the plane.

All 44 people on board were killed.

The aircraft also had heating and electrical lighting.