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    Re: GHA Aries long term Table?
    From: Greg Rudzinski
    Date: 2014 Dec 17, 08:51 -0800


    Try extending the existing tables for a few years using the USNO web sight. Correct table 4 part a. so that year 2017 and beyond will match NSNO data. If E and Dec table values are off by more than a minute then a small correction there can be made. Photo copy corrected table and keep with the trig calculator.

    Greg Rudzinski


    From: Samuel L
    Date: 2014 Dec 16, 19:05 -0800


    2015 is coming....surely.

    HO 249 Volume 1 page 340 has "Table 4- GHA Y for the years 2006 to 2014" which is a very compact way to determining GHA Y (Aries) for stars.

    See here (page 339)-

    I use it instead of carrying around the NA. (I can easily calculate Hc and Az using the Spherical Trig formulas so I can reduce the amount of paper on board).

    But, that sheet will expire this year. Do you know of the same Table 4 for the coming years?

    Or rather....do you know of quick, accurate way to determine GHA Aries?

    Sam L.

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