J2000.0 Equinox

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March 27th 11, 06:16 PM posted to uk.sci.astronomy

John Rivers

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J2000.0 Equinox

hi

do I understand J2000.0 equatorial coordinate system correctly?

- reference plane is equatorial plane of earth at 1 Jan 2000 12:00 TT
- vernal point is position of sun at Equinox in March 2000 (i think
this is roughly 20 March 07:35)

so if I point Google Sky to RA 0 DEC 0 that would be the position of
the sun at the March Equinox 2000 ?

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