There are 3 lounges at SVO2, DATE Lounge, Classic Lounge and Amber Lounge. DATE Lounge is used by SkyTeam members, primarily. Amber is used by Star members, primarily (there are some odd airlines that contract those lounges for their C passengers also). Classic lounge is a mix of airlines. Also remember that not a single lounge will let you in without a written invitation that one can recieve at the check-in or at the transfer desk. Since you will be flying with SU, you will receive invitation to use DATE lounge 2 hours before your departure. There is no way lounge dragons at Amber lounge will let in just with your SEN card without written invitation. There is no SEN/Star exclusive lounge in SVO2, every lounge is a contract space