SN 2002er
SN 2002er was discovered on LOTOSS KAIT images. It was about 17.5mag on
August 23.2. The host galaxy of SN 2002er is UGC 10743 (offset is 12"W,5"N),
a nearby spiral or lenticular galaxy somewhat affected the Milky Way extinction.
It seems to have been discovered during a rising phase (vsnet-campaign-sn
466). According to IAUC 7961, a spectroscopy of SN 2002er at the INT
on La Palma revealed that it was of type Ia, about 10 days before maximum
on Aug. 26.93. The host-galaxy extinction also exist as well as the Milky
Way one, so the expected maximum for typical SN Ia is mag about 15.3 (vsnet-campaign-sn
468). H. Yamaoka reported that it seems that estimated extinction would
be larger than real value. If there is no extinction both in the Milky
Way and in the host galaxy, the expected maximum for typical SN Ia is mag
about 14.3 (vsnet-campaign-sn
473).