NGC 40 (Bow-Tie nebula) - Planetary Nebula in Cepheus
NGC 40 is a Planetary Nebula in the Cepheus constellation. NGC 40 is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere.
The image below is a photograph of NGC 40 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins).
Key facts about NGC 40
NGC 40 is above the horizon from Greenwich, United Kingdom.
Altitude: 34.2°
Azimuth: 356.3°
Direction: North
See also NGC 40 rise and set times.
Given its visual magnitude of 11.89, NGC 40 is visible with the help of a telescope having an aperture of 8 inches (200mm) or more.
Photometric information of NGC 40
The following table lists the magnitude of NGC 40 in different bands of the electomagnetic spectrum (when available), from the B band (445nm wavelength, corresponding to the Blue color), to the V band ( 551nm wavelength, corresponding to Green/Yellow color), to the J, H, K bands (corresponding to 1220nm, 1630nm, 2190nm wavelengths respectively, which are colors not visible to the human eye).
For more information about photometry in astronomy, check the photometric system article on Wikipedia.
Apparent size of NGC 40
The following table reports NGC 40 apparent angular size. The green area displayed on top of the DSS2 image of NGC 40 is a visual representation of it.Celestial coordinates and finder chart of NGC 40
Celestial coordinates for the J2000 equinox of NGC 40 are provided in the following table:
The simplified sky charts below show the position of NGC 40 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.
Rise and set times of NGC 40 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
NGC 40 (Bow-Tie nebula) - Planetary Nebula in Cepheus is circumpolar and transits at 09:21 UTC (altitude: 69.0°)