user: Question: What is every entry for epoch if periselene is 2,291.250?
Columns: ['Epoch (UTC)', 'Periselene (km)', 'Aposelene (km)', 'Eccentricity', 'Inclination (deg) (to Moon equator)', 'Period (h)']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['November 15, 2004, 17:47:12.1', '6,700.720', '53,215.151', '0.776329', '81.085', '129.247777']
SQL:

assistant: SELECT "Epoch (UTC)" FROM "Table" WHERE "Periselene (km)" = '2,291.250';