Quote:
Originally Posted by DavidTrap
I can keep up with this until the fourth line where you mention HA? What is that. How do you then calculate the longitude from that?
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Hi David,
No problem.
HA is the Hour Angle, which is expressed as a time.
So for the object, its HA = LAST - RA
i.e HA = 20:26 - 16:43 = 03:42
(Apologies, in the prior post I made a typo for the LAST, as 20:36 rather than
the correct time of 20:26 - but the result was correct).
We know that there are 24 hours in 360 degrees.
Thus 1 hour = 15 degrees.
Thus 03:42 converted to degrees is 3.71 * 15 = 55.66
The Longitude at Linville is 152.274E.
Thus 152.274 - 55.66 = 96.61E
which is equivalent to 96:36E
Best Regards
Gary