20. F2
The ratio of intensity 4030-4034: 4128-4132 is greater than in the corresponding luminosity class at F0. A shading is observed degrading toward the red from 4300. The luminosity class is determined from the ratios 4171: 4226 and 4077: 4045.
Star | MKK | a | m | HD | |
Cas..... | F2 III | 00:03 | +58°36' | 2.4 | F5 |
Gem..... | F2 IV | 07:14 | +22 10 | 3.5 | F0 |
UMa..... | F2 III | 09:43 | +59 31 | 3.9 | F0 |
78 UMa... | F2 V | 12:56 | +56 54 | 4.9 | F0 |
Boo...... | F2 V | 14:30 | +30 11 | 4.5 | F0 |
Ser....... | F2 IV | 17:55 | -03 41 | 4.6 | F0 |
Sgr...... | F2 II | 19:03 | -21 11 | 3.0 | F2 |
High resolution image |