1215+303 (B2 1215+30, TON 605, ON 325)

Coordinates

= 12:17:52.0819,

= +30:07:00.636 (2000)
z = 0.237

Landessternwarte Heidelberg-Königstuhl

Comparison stars

star U B V R I

B 14.96 (0.04) 14.59 (0.04) 14.21 (0.04)

C1 16.50 (0.14) 16.21 (0.11) 15.92 (0.15)

comparison stars from Fiorucci M., Tosti G., 1996, A&AS 116, 403

Field of view is 10'x10'