|History of Stargate||Active|
|Out of Stargate universe information|
|First mention||"A Matter of Time"|
Nothing is known about P2A-870.
Following the explosion of a bomb near the Stargate Command's Stargate event horizon that was connected to P3W-451 and under the effects of a nearby black hole, the resulting overload moves the wormhole to P2A-870's Stargate, allowing the gate deactivation right after.
- This planet is only mentioned here, one doesn't know if it was explored later.