Z.ET. XXII. AND OTHER. DISCOVERIES. 405

From a series of observations, continued foreight months, during which time this planet wasboth in opposition and conjunction, and hadmoved through a part of its orbit of more thansix degrees, M. de la Lande calculated its coursefor 1782, and found that its distance from thefun is near nineteen times greater than that ofthe earth; that its magnitude is about eighty-nine times greater than the earth’s; and that itrevolves round the fun in an orbit, which isnearly circular, in about eighty-two years.

The apparent diameter of this planet beingbut about four seconds, it can seldom be seenvery plainly by the naked eye, but may easily bediscovered in a clear night, when above the ho-rizon, by a good telescope; its situation, withrespect to the fixed stars, being previously known.Whether it was attended by any satellites was,at first only a matter of conjecture; but Dr.Herschel has since discovered two; and, fromthe remote situation of the planet, there is rea-son to believe that there may be several others,which have not yet been observed. He has notseen them long enough to be able to ascertaintheir periodical times with great accuracy ; butis led to suppose that the first performs its re-volution in about 8 | days, and the other innearly 13 § days.

As a. mark of respect to his present Majesty,and to convey an idea to posterity of the timeD d 3 and