Spacecraft Y spatial coordinate, relative to the geocentric terrestrial reference frame, in meters, at the mid-point of the exposure, using the J2000 (ECI) coordinate system.
Attribute | Value |
---|---|
data type | float |
enumerated Values | not defined |
units | meters |
example | |
default value | |
special processing | VALUE_REQUIRED |
source | Science Data Processing (SDP) |
software source | |
calculation | jwst_y value from either DefEphemeris or PredictEphemeris tables where useAfter date is closest to the exposure's EXPMID time, converted from km to m. |
DB destination | ['ScienceCommonExt.obsgeo_y', 'GuideStarExt.obsgeo_y'] |
data type in DB | float |
instrument | ALL |
mode | All |
product level | 1b |
FITS hdu | SCI |
FITS header section | Ephemeris |