Re: (meteorobs) algorithm for Solar Coordinates (including sun's true longitude)

• To: Meteor Observing Mailing List <meteorobs@latrade.com>
• Subject: Re: (meteorobs) algorithm for Solar Coordinates (including sun's true longitude)
• From: Lew Gramer <dedalus>
• Date: Wed, 16 Sep 98 10:15:49 -0400
• In-Reply-To: Your message of "Mon, 14 Sep 98 21:30:16 PDT." <l03130300b222eeee2cfb@[206.63.41.9]>
• Reply-To: meteorobs@latrade.com
• Sender: owner-meteorobs

Hey, Gregg - it's great to have someone with a flare for astrometrical math on 
the list! You're interest and skill are a welcome complement to those of us who 
don't like numbers much (e.g. theoretical math majors! ;>)

I'm still confused by one thing, though: why isn't solar longitude 180 degrees different from the sun's ecliptical longitude?? This seems to imply that Solar Longitude (as distinct from Heliocentric Longitude??) uses *Autumnal* Equinox as its origin! Otherwise, the earth-as-seen-from-sun angle is exactly opposite (180o shifted) from the sun-as-seen-from-earth angle.

Clear skies!
Lew

• (meteorobs) Astronomy Calculator including Solar Longitude
• From: "Jennifer (& Gregg) Lobdell" <jenlobdell@halcyon.com>

• Re: (meteorobs) algorithm for Solar Coordinates (including sun's true longitude)
• From: "Jennifer (& Gregg) Lobdell" <jenlobdell@halcyon.com>

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