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144

[[underlined]]February 8, 1907.[[/underlined]]

Exam. of Plates to det. variation in A.G.C. 16865.
=Z.C. 12^[[h]] 1003 R.A. 12^[[h]] 16.0^[[m]] Dec. -74° 47' (1875). A.G.C. magn. 9.5.
12 17.4 -74 57 (1900). Not in C.P.D.
Sp Na var [[strikethrough]]?[[/strikethrough]] on A7583 No. 522.

[[4 columned table]]
Plate|Date|Ex|Est.|
|---|---|---|---|
|A44[[strikethrough]]4[[/strikethrough]]00|May 23, 1900|240|9.2|
|B33566|May 3, 1904|10|9.3|
|B[[strikethrough]]5[[/strikethrough]]33100|Feb. 23, 1904|10|9.3|
|B35670|March 29, 1905|10|9.9|
|B29436|April 26, 1902|10|9.0|
|B27004|March 28, 1901|10|8.8|
|B249[[strikethrough]]3[[/strikethrough]]73|April 6, 1900|10|10.2|
|B22444|April 4, 1899|10|10.4|
|B21548|May 31, 1898|10|9.8|
|B21125|April 2, 1898|10|10.5|
|B18901|April 22, 1897|10|9.2|
|B9301|May 2, 1893|13|10.5|
|B16217|June 10, 1896|10|9.5|
|B31604|May 4, 1903|10|9.9|
|B23488|July 17, 1899|10|10.6|
|B26992|March 23, 1901|65|9.0|


An examination of the above plates shows a variation of about 1.8 magn.  Approx. limits, 8.8 to 10.6
W.P.F.

John G. Wolbach Library, Harvard-Smithsonian Center for Astrophysics . Provided by the NASA Astrophysics Data System