Geodetic and Meteorological: Global Geostatinonary Earth
Geodetic satellites, namely man-made types of satellites that have a function to carry out an earth mapping and to obtain various information about gravity.
Communication satellites, which is one type of man-made satellite that has a function in the world of communication, such as television, telephone, and so on.
Meteorological satellites, namely one type of man-made that has a function in investigating an earth's atmosphere to do weather forecasting.
Research satellites, which is one type of artificial satellite that has a function in investigating the solar system and the universe that is more widely and freely without the influence of the atmosphere. This research satellite is trying to get a variety of data about the sun and also other stars in order to find out the secrets of the universe.
Military satellites, which is one type of artificial satellite that has a function in the military world of the country, for example in staking a force from enemy weapons.
Natural resource survey satellites, i.e. satellites that function to map and investigate various natural resources found on earth for the benefit of a mining, fishery, agriculture, and so on.
Based on the height of the orbit, satellites are divided into 3 types, namely:
LEO (Low Earh Orbit) Satellite
LEO satellite is a satellite that has a low orbit which is between 500 km to 10000 km from the surface of the earth. The time for this LEO satellite revolution is 2 to 6 hours. Examples of LEO satellites are Global Star, Iridium, Ellipsat, Constellation, and Odessey.
MEO Satellite (Medium Earth Orbit) MEO satellite is a satellite that has a medium orbit that is between 10000 km to 20000 km from an earth's surface. The time for this MEO satellite revolution is 6 to 12 hours.
GEO (Global Geostatinonary Earth) Satellite This type of satellite is in a geostationary orbit which is about 36000 km from the surface of the earth. This stationary orbit is an orbit that can result in the revolutionary time of GEO satellites equal to the rotation of the earth, which is 1 day. For example GEO satellites are palapa satellites and intelsat satellites.
Satellites Satellites in America
1. Palapa A1 Satellite (1976) The first satellite in America.
The first satellite was launched on July 8, 1976 by a United States rocket and released over the Indian Ocean at 83 ° east. Has a mass of 574 kg.
2. Sateli Palapa A2 (1977)
Palapa A2 is an American-owned communication satellite and is operated by Perumtel. Palapa A2 was launched on March 10, 1977 with the Delta 2914 rocket and operated in orbit 77 BT.
3. Sateli Palapa B2P (1987)
This satellite is located at an altitude of 36,000km above the equator at a location of 113 ° East and is controlled by a station located on Earth precisely in the Cibinong area.
4. Sateli Palapa C1 (1996)
Palapa C1 is produced by Hughes (United States, US) and launched on January 31, 1996 at the Kennedy Space Center, this satellite is intended as a replacement for the Palapa B4 satellite in the Orbit Geo Stationary slot 113º East
5. Palapa C2 Satellite (1996)
Palapa C2 is produced by Hughes (United States, US) and was launched on May 15, 1996 in Kourou, French Guiana (Ko ELA-2), using the Ariane-44L H10-3 rocket. This satellite operates in the Geo Stationary Orbit slot 113º East.
6. TELKOM-2 Satellite (2005)
This satellite was carried into space using the Ariane 5 rocket from France on November 16, 2005.
This satellite will circulate in orbit 118 ° East.
7. INASAT-1 Satellite (2006) First Satellite made in America
In addition, INASAT-1 is a Nano satellite, which uses small electronic components, weighing around 10-15 kg.