Re: Re: Possible Mystery Spacecraft?

From: frank@reednavigation.com
Date: Wed Jun 12 2013 - 14:17:18 UTC

  • Next message: George Roberts: "Re: Possible Mystery Spacecraft?"

    Could you verify the angular rate? I think you said that the speed was about a minute of arc per minute of time. If so, that's really close to the limit at which motion is perceived as motion. It's not impossible, of course. And even that slow motion is detectable by comparisons over time. I just wonder whether this was consistent with your observer's actual observations. The Moon's motion relative to background stars is half a minute of arc per minute, so if the quoted speed is correct, that's very slow. There are a number of satellites on elliptical orbits with very high apogees. When at apogee, they move much more slowly than geosynchronous satellites. That's just a general suggestion --I don't have any candidate objects.
    
    Also, what was the object's apparent magnitude? Sorry if you've already provided this.
    
    Frank Reed
    Centennia Software / ReedNavigation.com
    Conanicut Island  USA
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