occultation_direction in Occultation_​Time_​Series

Name: occultation_directionVersion Id: 1.0.0.0
Description: occultation_direction indicates the direction of an occultation track. This refers to the observed occultation track overall, not to the subset that might appear in a particular file (e.g., if an occultation includes both ingress and egress tracks, the value for occultation_direction will be both in the data products for each occultation profile. Permitted values are 'ingress', 'egress', 'both', and 'multiple'. The value 'multiple' is used where the occultation track is not monotonic over relatively short time scales. Generally only used for some Hubble-based occultations. May be appropriate for extremely long duration occultations of a high proper motion star (e.g., u36). Required in labels of ring occultation observations. Not intended as a value for a table field.
Namespace Id: ringsSteward: ringsClass Name: Occultation_​Time_​SeriesType: ASCII_​Short_​String_​Collapsed
Minimum Value: NoneMaximum Value: NoneMinimum Characters: 1Maximum Characters: 255
Unit of Measure Type: NoneDefault Unit Id: NoneAttribute Concept: NoneConceptual Domain: SHORT_STRING
Status: ActiveNillable: falsePattern: None
Permissible Value(s)ValueValue Meaning
 BothThe distance to the target body center along a portion of the occultation track decreases with time, and along a different portion increases with time.
 EgressThe distance to the target body center increases with time.
 IngressThe distance to the target body center decreases with time.
 multipleThe occultation track is not monotonic over relatively short time scales. Generally only used for some Hubble-based occultations. May be appropriate for extremely long duration occultations of a high proper motion star (e.g., u36).