All the measurements made since it was discovered by John Herschel in 1828 fit
inside a 1-arc sec circle. This pair is probably physical, but if it is in a
mutual orbit, it must be large and of extremely long period.
Richard Harshaw
Cave Creek, AZ
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Tony Muller
Sent: Friday, December 18, 2015 3:17 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Comet Catalina
Brian,
Never cease to be amazed.
Happy Holidays,
Tony Muller
Sent from my Verizon Wireless 4G LTE Droid On Dec 18, 2015 1:42 PM, Brian Skiff
<bas@xxxxxxxxxx> wrote:
--
On Fri, 2015-12-18 at 08:13 -0700, J. D MADDY wrote:
.... The "double star" to the right of the comet is actually two
independent stars and only a visual double. (As per Starry Night)
Link to the picture:
https://www.flickr.com/photos/59454099@N00/23828595245/in/dateposted
-public/
Starry Nights must need updating, since the double star is in
fact a nice common-motion pair.
The primary is HD 125057, and they are a pair of G-type dwarf stars.
The pair is WDS 14171+0103 = hj 1250, first measured in 1828 by John
Herschel.
The proper motion of the two stars is a bit over
0".1 per year, heading southeast.
\Brian
--
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