[TML] The Sky at Night?

[Patrik Holmstrom]

On Dec 3, 2007 1:07 PM, Timothy Little <tim at little-possums.net> wrote:
> On Mon, Dec 03, 2007 at 11:18:44AM +0000, Ewan Quibell wrote:
> > Would the F7 V just look like a bright star or would it produce
> > something like moon light?
>
> It would illuminate about the same as a bright full moon, yes.  It
> would be a very dazzling star, apparent magnitude probably about -13.
> I don't think it would actually be dangerous to look at: despite the
> pointlike focus on the retina, the light passing through the pupil
> would be less than a microwatt.

That looks like it is in the ballpark. Assuming a luminosity of 2.1
sol I get an apparant magnitude of -14.5 or 6 times brighter than mean
full moon luminosity (-12.6).

/Patrik