 In July 2012 , Steven S. Vogt Reanalyzed the 2011 data proposed by Forveille et al. noting that there were 5 objects ( GJ 581 b , e , c , g , d with no evidence for f ) . Planet g was orbiting around 0 @.@ 13 AU with an orbital period of 32 days placing it inside the habitable zone . Vogt concluded that the object had a minimum mass of 2 @.@ 2 M and has a false positive probability of less than 4 % . 
