18. A7
The ratios 4030-4034: 4128-4132 and 4300: 4385 were used to determine the spectral type. The luminosity classes depend on the ratio 4417: 4481.
Star | MKK | a | m | HD | |
Boo..... | A7 III | 14:28 | +38°45' | 3.0 | F0 |
a Aql..... | A7 V | 19:45 | + 8 36 | 0.9 | A5 |
a Cep..... | A7 V | 21:16 | +62 10 | 2.6 | A5 |
High resolution image |