Table: constellations_area
Columns: rank
family
abbre_viation
constellation
area_sq_deg
area_msr
per_cent_age
right_ascension_hm
decli_nation_dm
quad

Question: What is the percentage of this constellation abbreviated as 'nor'?
SQL: SELECT "per_cent_age" FROM constellations_area WHERE "abbre_viation" = 'Nor'

Question: This constellation, abbreviated as 'oph' has how many right ascension (in hm)?
SQL: SELECT COUNT("right_ascension_hm") FROM constellations_area WHERE "abbre_viation" = 'Oph'

Question: What is the name of this constellation with an area of 245.375 sq. deg.?
SQL: SELECT "constellation" FROM constellations_area WHERE "area_sq_deg" = '245.375'

Question: This constellation with a ranking of 51 has how many percentages on record?
SQL: SELECT COUNT("per_cent_age") FROM constellations_area WHERE "rank" = 51

Question: What is the percentage of this constellation with an area of 248.885 sq. deg.?
SQL: SELECT "per_cent_age" FROM constellations_area WHERE "area_sq_deg" = '248.885'