Article · Wikipedia archive · Last revised Jun 18, 2026

Edith Kellman

Edith Kellman was a noted American astronomer who is known for her work on the Yerkes system of stellar classification, also called the MKK system.

Last revised
Jun 18, 2026
Read time
≈ 1 min
Length
200 w
Citations
3
Source
Edith Kellman
Born(1911-04-04)April 4, 1911
DiedMay 11, 2007(2007-05-11) (aged 96)
EducationWheaton College
Known forMKK system of stellar classification
Scientific career
FieldsAstronomy

Edith Kellman (April 4, 1911 – May 11, 2007, Walworth, Wisconsin) was a noted American astronomer who is known for her work on the Yerkes system of stellar classification, also called the MKK system.

Early life

Kellman was born in Walworth, Wisconsin, and attended Wheaton College in Wheaton, Illinois.1

Career

Kellman worked at the Yerkes Observatory as a photographic assistant, where she worked with William Morgan and Philip Keenan to develop the Yerkes system, an influential system of stellar classification. The MKK classification system was introduced in 1943 and was used by Morgan, Keenan, and Kellman to map the spiral structure of the Milky way using O and B stars. A variation on this system is still used today in stellar classification.2

After leaving the observatory, she taught mathematics at Williams Bay High School until her retirement in the 1970s.1

References

References

  1. Long, Jeff (May 14, 2007). "Edith M. Kellman: 1911 - 2007: Teacher played key role in astronomers' work". Chicago Tribune. Retrieved December 28, 2014.
  2. John Daintith; E Tootill; D Gjertsen; S Mitchell, eds. (1994). Biographical Encyclopedia of Scientists (2nd ed.). CRC Press. ISBN 9780750302876.