HiRISE: HiCat Data Dictionary HiRISE.Orbits

HiCat Data Dictionary

Catalog: HiRISE: The main HiRISE catalog contains all the information used in operating the HiRISE camera after it is attached to the MRO spacecraft. The information is divided into those related to suggesting, planning, commanding, retrieving, processing, validating, and distributing the observations. The tag that follows an observation through all these catalogs (and from Earth to Mars and back) is the unique Observation_ID. This text representation also forms the core of the product names. The HiRISE catalog also contains ancillary information needed in various uplink and downlink activities, such as the people making image suggestions, MRO project uplink files, SPICE and engineering data, and public image releases.
Table:Orbits: This table holds MRO orbital information related to specific orbits. These generally take the form of times (eg. the light-to-dark terminator crossing time, etc).

Field	Description	Type	Null	Key	Source
ORBIT_NUMBER	The MRO Orbit Number for which information is being stored.	INT(10) unsigned	Not Null	Primary Key	db server
DEQUAX_TIME	The date and time of the descending equator crossing. This time is essentially the start time of the given orbit and occurs on the night side of Mars.	DATETIME			OPTG file
AEQUAX_TIME	The date and time of the ascending equator crossing. This occurs on the day side of Mars.	DATETIME			OPTG file
NPOLEX_TIME	North polar minimum slant range crossing time.	DATETIME			OPTG file
SPOLEX_TIME	South polar minimum slant range crossing time.	DATETIME			OPTG file
LDTERM_TIME	Light-dark terminator crossing time.	DATETIME			OPTG file
DLTERM_TIME	Dark-light terminator crossing time.	DATETIME			OPTG file
DEQUAX_LSUBS	The solar longitude at the time of the descending equator crossing.	DOUBLE			Derived from OPTG time
LAST_UPDATE	This column records the last time that a record was updated.	TIMESTAMP			db server

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This page was generated from the XML HiCat Data Dictionary.