NGC 40
| Use attributes for filter ! | |
| Magnitude | 10. 7 |
|---|---|
| Constellation | Cepheus |
| Apparent magnitude (V) | 10. 7 |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2956700 |
About NGC 40
NGC 40 is a planetary nebula discovered by William Herschel on November 25, 1788, and is composed of hot gas around a dying star. The star has ejected its outer layer which has left behind a smaller, hot star with a temperature on the surface of about 50,000 degrees Celsius.