The New General Catalogue object NGC 98, a magnitude 12.7 spiral galaxy in the constellation Phoenix.
The number of sons of Ater in the Census of men of Israel upon return from exile (Holy Bible, Ezra 2:16)
The highest jersey number allowed in the National Hockey League, as 99 was retired by the entire league to honor Wayne Gretzky and major-league sports only allow one- or two-digit uniform numbers.
The Saros number (http://sunearth.gsfc.nasa.gov/eclipse/SEsaros/SEsaros1-175.html) of the solar eclipse series which began on 188 June 12 and ended on 1450 July 9.
The duration of Saros series 98 was 1262.1 years, and it contained 71 solar eclipses.
The Saros number (http://sunearth.gsfc.nasa.gov/eclipse/LEsaros/LEsaros1-175.html) of the lunar eclipse series which began on 436 February 18 and ended on 1752 April 28.