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[vsnet-chat 3377] re V348 Sgr comparison stars
- Date: Fri, 07 Jul 2000 22:02:32 +0000
- To: vsnet-chat@kusastro.kyoto-u.ac.jp
- From: no name <crawl@zoom.co.uk>
- Subject: [vsnet-chat 3377] re V348 Sgr comparison stars
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
> The UCAC1 'V' values are from the polynomial regression:
> V=0.027U**2 - 0.666U + 3.784, were U is the raw UCAC1 magnitude.
is this a globally applicable thing, or just for that field?
If global, what's the applicable B-V range, please?
I believe Taichi Kato has mentioned a way of getting approx. estimates V
& B-V from USNO A1.0 blue & red mags in the past.
What is that please? And is it just as applicable to A2.0?
Applicably yours
John
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