Alternate Definitions for HG

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Term: HG
Definition:

Heliographic - A heliocentric rotatingcoordinate system where the Z axis is normal to the solar equatorial plane,positive northward. X, Y axes rotate with a 25.38 day period. The zerolongitude (X axis) is defined as the longitude that passed through theascending node of the solar equator on the ecliptic plane on 1 January, 1854at 12 UT. See http://nssdc.gsfc.nasa.gov/space/helios/coor_des.html

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
Permalink:
https://n2t.net/ark:/99152/h10321
Term: HG
Definition:

Heliographic - A heliocentric rotating coordinate system where the Z axis is normal to the solar equatorial plane, positive northward.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
Permalink:
https://n2t.net/ark:/99152/h26393