diff --git a/README.md b/README.md index 0709121..7096439 100644 --- a/README.md +++ b/README.md @@ -25,10 +25,10 @@ It will often be combined with other extensions that describe the actual data, s | ------------------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | sat:platform_international_designator | string | The International Designator, also known as COSPAR ID, and NSSDCA ID | | sat:orbit_state | string | The state of the orbit. Either `ascending` or `descending` for polar orbiting satellites, or `geostationary` for geosynchronous satellites | +| sat:orbit_cycle | integer | The number of repeat cycle done by the satellite at the time of the acquisition. [Repeat cycle](https://ltb.itc.utwente.nl/page/498/concept/81577) is the time between two successive identical orbits. | | sat:absolute_orbit | integer | The absolute orbit number at the time of acquisition. | | sat:relative_orbit | integer | The relative orbit number at the time of acquisition. | | sat:anx_datetime | string | The [Ascending Node](https://en.wikipedia.org/wiki/Orbital_node) Crossing (ANX) time, in UTC. It is formatted according to [RFC 3339, section 5.6](https://tools.ietf.org/html/rfc3339#section-5.6). | -| sat:orbit_cycle | integer | The number of repeat cycle done by the satellite at the time of the acquisition. [Repeat cycle](https://ltb.itc.utwente.nl/page/498/concept/81577) is the time between two successive identical orbits. | *At least one of the fields must be specified.*