Photoelectric observations of two Mars-crossing asteroids 2078 Nanking
and 2204 Lyyli were carried out during 1992 and 1993 oppositions, res
pectively. The observed lightcurve amplitude for Nanking is 0.79 +/- 0
.03 mag and it is 0.43 +/- 0.03 mag for Lyyli. The obtained Nanking ro
tation period is 6.50 +/- 0.04 h.