# `Sidereon.CCSDS.OPM.Covariance`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/ccsds/opm.ex#L131)

Optional OPM 6x6 covariance. `matrix` is a row-major list of six six-element
rows.

# `t`

```elixir
@type t() :: %Sidereon.CCSDS.OPM.Covariance{
  cov_ref_frame: String.t() | nil,
  matrix: [[float()]]
}
```

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*Consult [api-reference.md](api-reference.md) for complete listing*