The photometric amplitude of the variation is 0.010 magnitude. The line profile variability periods are 0.702d and 0.269d, with intermittently present periods of 0.6d and 0.75d. It was one of the first stars where short-period variations were found. λ Eri is classified as LERI + GCAS since it shows both short term periodic variations and longer timescale eruptive variation. The AAVSO International Variable Star Index defines a LERI type of variation. Λ Eri is classified in the General Catalogue of Variable Stars as a Beta Cephei variable. The distance to this star, based upon an annual parallax shift of 0.00402 arcseconds, is roughly 810 light years.
It is visible to the naked eye on a dark night with an apparent visual magnitude of 4.27. Lambda Eridani ( λ Eri) is a star in the constellation Eridanus.
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