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Airy, Sir George Biddell (1801-1892) Knight, astronomer Hansen, Peter Andreas (1795-1874) astronomer
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Autograph letter signed to J.C. Adams

Reply to J.C.A.'s of 29th. Comments on article in Mechanics Mag. Dec. 1846. Advises to wait for new observation of New Planet (Neptune) to measure its distance from sun, not to calculate. Thanks for further figures of position of planet. Does not favour Hansen's methods of calculation, nor LeVerrier's use of single observations. On the Lunar & planetary reductions calculated from Camb. Observatory

(See G.B.A. to J.C.A. 27 Mar.1851 for table of Saturn dated 1 Feb.1847).

Airy, Sir George Biddell (1801-1892) Knight, astronomer

Autograph letter signed to J.C. Adams

Requests J.C.A. or someone appointed by him studies '8 Venus mean longitude - 13 Earth's mean longitude' in the Moon's motion, to settle who is right between Hansen and Delaunay. Will send cheque for Horrocks Memorial later. (See G.B.A. to J.C.A. 28th Oct. 1874).

Airy, Sir George Biddell (1801-1892) Knight, astronomer

Autograph letter signed to J.C. Adams

Motion of the moon. Quotes letter from Hansen on formulae he used. Requests further information on effects of one planet on motion of another.

Airy, Sir George Biddell (1801-1892) Knight, astronomer

Copy of letter to P. Hansen

Neptune. Transcript from Airy's correspondence files in RGO Archives, copied for D.MacAlister 1893-1894.

Airy, Sir George Biddell (1801-1892) Knight, astronomer

Copy of letter to W. Whewell

In JCA's hand. Sends two equations from Hansen to explain the inequality of the moon's motion [missing]. Requests that JCA may be allowed to see the letter.

Airy, Sir George Biddell (1801-1892) Knight, astronomer