Distance between Earth's Geocenter and Satellite Calculator
Geocenter refers to the Earth’s center and is the point around which the mass of the Earth is evenly distributed. The distance between the geocenter and the satellite is calculated by adding the distances between the ground station and the satellite and the earth’s radius. The theoretically calculated value of the Earth’s radius is the distance between the geocenter and the ground station which is approximated to be 6,378 km (3,963 mi).

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The distance between the geocenter and the satellite is essential in calculating the slant range and surface coverage area of a satellite.
For example, consider the distance between the ground station and a LEO satellite is 400 Km. The calculated value for the central orbital radius of Earth is 6378 Km. Find out the distance between geocenter and the LEO satellite ?
Ans:
r = h + b
= 400 + 6378
= 6378 Km
GNSS Constellations - A list of all GNSS satellites by constellations
beidou
Satellite Name | Orbit | Date |
---|
BeiDou-3 G4 | Geostationary Orbit (GEO) | 17 May, 2023 |
BeiDou-3 G2 | Geostationary Orbit (GEO) | 09 Mar, 2020 |
Compass-IGSO7 | Inclined Geosynchronous Orbit (IGSO) | 09 Feb, 2020 |
BeiDou-3 M19 | Medium Earth Orbit (MEO) | 16 Dec, 2019 |
BeiDou-3 M20 | Medium Earth Orbit (MEO) | 16 Dec, 2019 |
BeiDou-3 M21 | Medium Earth Orbit (MEO) | 23 Nov, 2019 |
BeiDou-3 M22 | Medium Earth Orbit (MEO) | 23 Nov, 2019 |
BeiDou-3 I3 | Inclined Geosynchronous Orbit (IGSO) | 04 Nov, 2019 |
BeiDou-3 M23 | Medium Earth Orbit (MEO) | 22 Sep, 2019 |
BeiDou-3 M24 | Medium Earth Orbit (MEO) | 22 Sep, 2019 |
galileo
Satellite Name | Orbit | Date |
---|
GSAT0223 | MEO - Near-Circular | 05 Dec, 2021 |
GSAT0224 | MEO - Near-Circular | 05 Dec, 2021 |
GSAT0219 | MEO - Near-Circular | 25 Jul, 2018 |
GSAT0220 | MEO - Near-Circular | 25 Jul, 2018 |
GSAT0221 | MEO - Near-Circular | 25 Jul, 2018 |
GSAT0222 | MEO - Near-Circular | 25 Jul, 2018 |
GSAT0215 | MEO - Near-Circular | 12 Dec, 2017 |
GSAT0216 | MEO - Near-Circular | 12 Dec, 2017 |
GSAT0217 | MEO - Near-Circular | 12 Dec, 2017 |
GSAT0218 | MEO - Near-Circular | 12 Dec, 2017 |
glonass
Satellite Name | Orbit | Date |
---|
Kosmos 2569 | -- | 07 Aug, 2023 |
Kosmos 2564 | -- | 28 Nov, 2022 |
Kosmos 2559 | -- | 10 Oct, 2022 |
Kosmos 2557 | -- | 07 Jul, 2022 |
Kosmos 2547 | -- | 25 Oct, 2020 |
Kosmos 2545 | -- | 16 Mar, 2020 |
Kosmos 2544 | -- | 11 Dec, 2019 |
Kosmos 2534 | -- | 27 May, 2019 |
Kosmos 2529 | -- | 03 Nov, 2018 |
Kosmos 2527 | -- | 16 Jun, 2018 |
gps
Satellite Name | Orbit | Date |
---|
Navstar 82 | Medium Earth Orbit | 19 Jan, 2023 |
Navstar 81 | Medium Earth Orbit | 17 Jun, 2021 |
Navstar 78 | Medium Earth Orbit | 22 Aug, 2019 |
Navstar 77 | Medium Earth Orbit | 23 Dec, 2018 |
Navstar 76 | Medium Earth Orbit | 05 Feb, 2016 |
Navstar 75 | Medium Earth Orbit | 31 Oct, 2015 |
Navstar 74 | Medium Earth Orbit | 15 Jul, 2015 |
Navstar 73 | Medium Earth Orbit | 25 Mar, 2015 |
Navstar 72 | Medium Earth Orbit | 29 Oct, 2014 |
Navstar 71 | Medium Earth Orbit | 02 Aug, 2014 |
irnss
Satellite Name | Orbit | Date |
---|
NVS-01 | Geostationary Orbit (GEO) | 29 May, 2023 |
IRNSS-1I | Inclined Geosynchronous Orbit (IGSO) | 12 Apr, 2018 |
IRNSS-1H | Sub Geosynchronous Transfer Orbit (Sub-GTO) | 31 Aug, 2017 |
IRNSS-1G | Geostationary Orbit (GEO) | 28 Apr, 2016 |
IRNSS-1F | Geostationary Orbit (GEO) | 10 Mar, 2016 |
IRNSS-1E | Geosynchronous Orbit (IGSO) | 20 Jan, 2016 |
IRNSS-1D | Inclined Geosynchronous Orbit (IGSO) | 28 Mar, 2015 |
IRNSS-1C | Geostationary Orbit (GEO) | 16 Oct, 2014 |
IRNSS-1B | Inclined Geosynchronous Orbit (IGSO) | 04 Apr, 2014 |
IRNSS-1A | Inclined Geosynchronous Orbit (IGSO) | 01 Jul, 2013 |