[AZ-Observing] Rapid motion binary stars
- From: "Steve Coe" <stevecoe@xxxxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Tue, 21 Mar 2006 21:22:43 -0700
Howdy all;
I am working on an update of the SAC double star database and need some
double checking, please. I have used Brian Workman's double star calculator
Excel spreadsheet program to determine the motion in the future of some
famous doubles. I know that a few of you use the program to determine the
orbit of stars, would you please check these and make certain that the notes
I have written are accurate.
The motivation here is that the old SAC double star data was rarely used.
So, instead of creating a huge database of over 10,000 stars by paring down
the WDS, we decided to put together some smaller lists from people who enjoy
doubles and have created smaller lists that we could combine. That is the
plan.
We have used the SAC double star list, the Mullaney and McCall articles from
sky and Tell, and several other lists to create a database of over 1500
multiple stars at this point.
So, take a look at these and see if you agree with what I have written.
Thanks for your time and effort;
Steve Coe
Eta Cas Opening until 2127; then sep 14.8'' ; PA 5.6
Now--sep 13.1'' ; 320 deg PA
Iota Leo Opening until 2064; then sep 2.7'' ; PA 70
Now--sep 1.9'' ; 109 deg PA
Gamma Vir Closing until 2008; then sep 0.4''; PA 109; rapid opening after
2008
Now--sep 0.6''; 209 deg PA
78 UMa Closing until 2027; then sep 0.4''; PA 196 deg; slow opening
after 2027
Now--sep 1.4''; 89.7 deg PA
44 Boo Opening until 2007; Closest in 2034; then sep 0.26''
Now--sep 2.4''; 55.7 deg PA
Lambda OPH Opening until 2008; little change in separation; PA 36 deg
Now--1.6'' ; 35 deg
Zeta Her Opening until 2024; then sep 1.6'' ; PA 87 deg
Now--1.1'' ; 210 deg
mu Dra Opening until 2262; then sep 5.7'' ; PA 273 deg
Now--2.3'' ; 10 deg
70 Oph Opening until 2024; then sep 6.7'' ; PA 118 deg
Now--5.2'' ; 136 deg
Alpha Psc Closing until 2109; then sep 0.7'' ; PA 140 deg
Now--1.8'' ; 267 deg
Sirius Opening until 2026; then 11'' ; PA 57 deg
Now--7.4'' ; 104 deg
Alpha Cen Closing to 2038; then 1.8'' ; PA 95 deg
Now--9.4''; 233 deg
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