1-E

1E or 1-E may refer to:1st meridian east, a longitude coordinate ISS 1E Astra 1E, a communications satellite owned and operated by SES, and launched in 1995 California Proposition 1E (2009), a defeated California ballot proposition 1E, UIC classification of the 2-10-0 train arrangement 1E, a designator of celestial objects discovered via Einstein Observatory