Nature September 28th 1876
At the opposition of 1855, this brightest of the minor planet group, which during the last spring, as in previous favourable oppositions, was discernible to the naked eye, was observed by Prof Secchi to present a diameter but little inferior to that of the first satellite of Jupiter and he estimated it at 0.8 seconds; this we find corresponds to a true diameter of 450 m lies.
www.theramblingastronomer.co.uk
No comments:
Post a Comment