Angular diameter measurements can be combined with absolute observed fluxes to calculate an accurate effective temperature, which for CE Tauri is around 3,800 K. The linear size of the star can be calculated when combined with a distance. The radius of CE Tauri is found to be between 587 and 593 R☉. The star’s bolometric luminosity is then determined to be approximately 66,000 L☉. However, the distance to CE Tauri is only estimated using Hipparcos parallax. Gaia Data Release 2 provides a noticeably larger parallax, but with even more uncertainty and is labeled as unreliable.
Although the pulsation has not been clearly detected in direct angular measurements, CE Tauri is a pulsating star. Observations of TiO lines in its spectrum as their brightness changes reveal effective temperature changes of up to 100 K. When its physical properties are calculated, the bolometric luminosity and radius both change by about 10%, with the radius being larger at cooler temperatures.
A comparison of its properties with stellar evolutionary tracks reveals that CE Tauri evolved from a mass of 15 M☉ to a current mass of 14.37 M☉. Under the assumption that CE Tauri is an asymptotic giant branch (AGB) star, an alternative interpretation of the observations gives it a current mass of 8 M☉ and a luminosity of 44,000 L☉.