Candidate luminous variable star in the constellation Dorado
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! style="text-align: center; background-color: #FFFFC0;" colspan="2" | Observation dataEpoch J2000      Equinox J2000
! style="text-align:left" | Constellation
! style="text-align:left" | Right ascension
! style="text-align:left" | Declination
! style="text-align:left" | Apparent magnitude (V)
! style="background-color: #FFFFC0; text-align: center;" colspan="2"| Characteristics
! style="text-align:left" | Evolutionary stage
! style="text-align:left" | Spectral type
! style="text-align:left" | Apparent magnitude ( U
! style="text-align:left" | Apparent magnitude ( B
! style="text-align:left" | Apparent magnitude ( V
! style="text-align:left" | Apparent magnitude ( R
! style="text-align:left" | Apparent magnitude ( I
! style="text-align:left" | Apparent magnitude ( J
! style="text-align:left" | Apparent magnitude ( H
! style="text-align:left" | Apparent magnitude ( K
! style="text-align:left" | U−B 
! style="text-align:left" | B−V 
! style="text-align:left" | Variable type
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R85 (or RMC 85, after the Radcliffe Observatory Magellanic Clouds catalog) is a candidate luminous blue variable located in the LH-41 OB association in the Large Magellanic Cloud.
R85 has been shown to vary erratically in brightness with an amplitude of about 0.3 magnitudes. It shows variations on several timescales, sometimes with a distinct 400 day period. It has also shown temperature changes associated with brightness changes over several years, a characteristic of luminous blue variables.
Based on R85's current properties and evolutionary models, it probably started out with an initial mass of 28 M☉. It is theorized to be making a bubble known as DEM L132a with its stellar wind in the nebula LHA-120 N119, along with S Doradus. It has an infrared excess consistent with a stellar wind contribution.
References.
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