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#1
September 28th 03, 05:59 PM
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Hipparcos - Calculating Distances
Am wondering if anyone out there can explain to me how I calculate the
distance between various stars utilizing data in the Hipparcos Star Cataloque. My thanks in advance ... 
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#2
September 28th 03, 06:49 PM
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"David L. Collison" wrote in message
news:wrEdb.614606$o%2.286610@sccrnsc02... Am wondering if anyone out there can explain to me how I calculate the distance between various stars utilizing data in the Hipparcos Star Cataloque. My thanks in advance ... D = 1/P D = distance in parsecs P = Parallax in arcseconds Beware of the confidence interval. I did an article on this very subject for issue #30 of The Orrery. -- ------------------------------------------------------------ Greg Neill The Orrery: Models of Astronomical Systems http://members.attcanada.ca/~gneill/orrery.html ------------------------------------------------------------
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#3
September 28th 03, 06:49 PM
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"David L. Collison" wrote in message
news:wrEdb.614606$o%2.286610@sccrnsc02... Am wondering if anyone out there can explain to me how I calculate the distance between various stars utilizing data in the Hipparcos Star Cataloque. My thanks in advance ... D = 1/P D = distance in parsecs P = Parallax in arcseconds Beware of the confidence interval. I did an article on this very subject for issue #30 of The Orrery. -- ------------------------------------------------------------ Greg Neill The Orrery: Models of Astronomical Systems http://members.attcanada.ca/~gneill/orrery.html ------------------------------------------------------------
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#4
September 28th 03, 10:41 PM
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"David L. Collison" wrote in alt.astronomy:
Am wondering if anyone out there can explain to me how I calculate the distance between various stars utilizing data in the Hipparcos Star Cataloque. My thanks in advance ... You mean when you know the distance to star A and the distance to star B, both from Earth, what is the distance between star A and B? Well, if you know their angular separation a simple goniometrics calc does the trick. -- CeeBee Uxbridge: "By God, sir, I've lost my leg!" Wellington: "By God, sir, so you have!" Google CeeBee @ www.geocities.com/ceebee_2
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#5
September 28th 03, 10:41 PM
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"David L. Collison" wrote in alt.astronomy:
Am wondering if anyone out there can explain to me how I calculate the distance between various stars utilizing data in the Hipparcos Star Cataloque. My thanks in advance ... You mean when you know the distance to star A and the distance to star B, both from Earth, what is the distance between star A and B? Well, if you know their angular separation a simple goniometrics calc does the trick. -- CeeBee Uxbridge: "By God, sir, I've lost my leg!" Wellington: "By God, sir, so you have!" Google CeeBee @ www.geocities.com/ceebee_2
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