BRO-4 — pass prediction & tasking

BRO-4 is an optical satellite operated by UnseenLabs in sso orbit at roughly 542 km altitude (NORAD 49066, COSPAR 2021-073A).

Operator: UnseenLabs

Frequently asked questions

When does BRO-4 pass over my location?

Use PassPrediction's pass search to compute BRO-4's upcoming overpasses over any area of interest, with elevation, off-nadir angle, and ascending/descending node.

What orbit is BRO-4 in?

BRO-4 is in sso orbit at about 542 km, inclination 98°.

Who operates BRO-4?

BRO-4 is operated by UnseenLabs.

What is BRO-4's NORAD ID?

BRO-4 is cataloged as NORAD 49066 (COSPAR 2021-073A).

Verify on a reference tracker

Cross-check NORAD 49066 / COSPAR 2021-073A against an independent satellite catalog:

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