Key facts
- Right ascension
- 07 41 54.91
- Declination
- −18 ° 12 ′ 29.7 ″
- Distance
- 4.00 kly (1.23 kpc ) ly
- Apparent dimensions v
- 74" × 42"
- Constellation
- Puppis
- Radius
- 0.72 ly
- Designations
- ESO 560-PN9, Bow Nebula
via Wikipedia infobox
Wikidata facts
- Distance from Earth
- 1359
- Image
- NGC 2440 by HST.jpg
Show 7 more facts
- catalog code
- WEB 7420
- Commons category
- NGC 2440
- time of discovery or invention
- 1790-03-04
- apparent magnitude
- 18.9
- right ascension
- 115.478792
- declination
- -18.208250
- radial velocity
- 62.7
Sources (1)
via Wikidata · CC0
~2 min read
Article
Centre of NGC 2440 NGC 2440 is a planetary nebula, one of many in our galaxy. Its central star, HD 62166, is possibly the hottest known white dwarf, about 400,000°F(200,000°C). The nebula is situated in the constellation Puppis.
It was discovered by William Herschel on March 4, 1790. He described it as "a beautiful planetary nebula of a considerable degree of brightness, not very well defined." The nebula is located about 1.23 kiloparsecs (3.79×10 m) or about 4,000 light years from the Sun.