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Clyde W. Tombaugh

Currency:USD Category:Collectibles / Autographs Start Price:NA Estimated At:100.00 - 200.00 USD
Clyde W. Tombaugh

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Auction Date:2014 Jan 15 @ 18:00 (UTC-05:00 : EST/CDT)
Location:5 Rt 101A Suite 5, Amherst, New Hampshire, 03031, United States
ALS - Autograph Letter Signed
ANS - Autograph Note Signed
AQS - Autograph Quotation Signed
AMQS - Autograph Musical Quotation Signed
DS - Document Signed
FDC - First Day Cover
Inscribed - “Personalized”
ISP - Inscribed Signed Photograph
LS - Letter Signed
SP - Signed Photograph
TLS - Typed Letter Signed
American astronomer (1906–1997) best known for discovering Pluto in 1930. ALS, one page, 5 x 3.5, September 17, 1992. Letter to an admirer. In part: “If there are more planets beyond Pluto, they would have to be 2 magnitudes fainter than my plate limit. I made a thorough search over 2/3 of the entire sky in 14 years, scanned 90 million star images, detected by a 3 1/2 mm shift in 6 days.” In fine condition.