Satellites›Iridium
The Iridium satellites
Iridium is a satellite phone network: 66 working satellites in six rings over the poles, about 780 km up, with spares flying alongside. The 80 here are its second generation, launched from 2017.
- 105In orbit today
- 175Launched in all
- 70Come back down
- May 20, 2023Latest launch
The whole network, right now
Every dot is one Iridium satellite, where it is this second: six rings of them that pass over the poles, so that one is always in reach of any phone. Drag the globe to turn it, pinch or use the buttons to come closer. Fast forward runs a minute of their flight every second.
Finding the Iridium satellites…
Where they fly
Of the 80 whose orbit we have today, 74 fly at these heights above the ground, to the nearest 10 km. 5 are below the lowest of them: newly launched ones still climbing, and old ones on their way down.
| Height | Satellites |
|---|---|
| 780 km | 67 |
| 750 km | 7 |
All 80, with their orbits
Each name leads to that satellite’s page: what it is, its orbit in full, and a live 3D globe and map of where it is now.
| Satellite | Launched | Height | Tilt | One lap | At its brightest |
|---|---|---|---|---|---|
| IRIDIUM 100 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 102 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.7 |
| IRIDIUM 103 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | |
| IRIDIUM 104 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.6 |
| IRIDIUM 105 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | |
| IRIDIUM 106 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.6 |
| IRIDIUM 107 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 108 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | |
| IRIDIUM 109 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.6 |
| IRIDIUM 110 | May 22, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 111 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.7 |
| IRIDIUM 112 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.7 |
| IRIDIUM 113 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 114 | Jan 14, 2017 | 778 km | 86.4° | 100.4 min | mag +7.7 |
| IRIDIUM 115 | Jun 25, 2017 | 748 km | 86.4° | 99.8 min | mag +5.9 |
| IRIDIUM 116 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 117 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 118 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 119 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 120 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 121 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 122 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 123 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 124 | Jun 25, 2017 | 748 km | 86.5° | 99.8 min | mag +5.9 |
| IRIDIUM 125 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 126 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 128 | Jun 25, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 129 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 130 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 131 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 132 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 133 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 134 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 135 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 136 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 137 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 138 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 139 | Oct 9, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 140 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 141 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 142 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 143 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 144 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 145 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 146 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 147 | May 22, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 148 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 149 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 150 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 151 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 152 | May 22, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 153 | Dec 23, 2017 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 154 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 155 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 156 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 157 | Mar 30, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 158 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 159 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 160 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 161 | May 22, 2018 | 748 km | 86.5° | 99.8 min | mag +5.9 |
| IRIDIUM 162 | May 22, 2018 | 748 km | 86.5° | 99.8 min | mag +5.9 |
| IRIDIUM 163 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 164 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 165 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 166 | Jul 25, 2018 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 167 | Jan 11, 2019 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 168 | Jan 11, 2019 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 169 | Jan 11, 2019 | 764 km | 86.4° | 100.1 min | mag +5.9 |
| IRIDIUM 170 | Jan 11, 2019 | 654 km | 86.6° | 97.8 min | mag +5.6 |
| IRIDIUM 171 | Jan 11, 2019 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 172 | Jan 11, 2019 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 173 | Jan 11, 2019 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 174 | May 20, 2023 | 654 km | 86.6° | 97.8 min | mag +5.6 |
| IRIDIUM 175 | Jan 11, 2019 | 747 km | 86.5° | 99.7 min | mag +5.9 |
| IRIDIUM 176 | Jan 11, 2019 | 654 km | 86.6° | 97.8 min | mag +5.6 |
| IRIDIUM 177 | May 20, 2023 | 747 km | 86.4° | 99.7 min | mag +5.9 |
| IRIDIUM 178 | May 20, 2023 | 630 km | 86.7° | 97.3 min | mag +5.5 |
| IRIDIUM 179 | May 20, 2023 | 629 km | 86.7° | 97.3 min | mag +5.5 |
| IRIDIUM 180 | Jan 11, 2019 | 778 km | 86.4° | 100.4 min | mag +5.9 |
| IRIDIUM 181 | May 20, 2023 | 748 km | 86.5° | 99.8 min | mag +5.9 |
What happened to Iridium flares
The first generation of Iridium satellites was famous for its flares: a few seconds of sunlight off a door-sized antenna, bright enough to outshine Venus, at a time and place that could be predicted to the second. Most of those satellites have since been taken out of orbit. The satellites that replaced them are a different shape and do not flare in the same way.

With the app
Knowing where it is over the Earth is one thing. The app shows you where it is in your sky.
This page follows the satellite around the planet. The app works out when it passes over you, and leads you to it.
- Every pass over your exact location, for this satellite and 10,000+ more.
- An alert before it rises, so you are outside in time.
- An arrow in the camera view that leads you to the exact spot in the sky.
- Starlink trains, Tiangong, Hubble and the brightest satellites of tonight.
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154Brightest satellites
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11,192Starlink
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73Weather satellites
The satellites behind the forecast, in low orbit and over the equator.
546Geostationary satellites
The ring of satellites that hang over one spot, in order around the Earth.
95Amateur radio satellites
The satellites radio amateurs talk through.
654OneWeb
The other internet constellation, in a much higher orbit.
206New in orbit
Everything launched in the last thirty days.
From CelesTrak’s orbit data and satellite catalogue, which lists launches up to November 11, 2026. Page updated November 14, 2026.