NGC 1990 (Alnilam) - Star in Orion
NGC 1990 is a Star in the Orion constellation. NGC 1990 is situated close to the celestial equator and, as such, it is at least partly visible from both hemispheres in certain times of the year.
The image below is a photograph of NGC 1990 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 1990
NGC 1990 is above the horizon from Greenwich, United Kingdom.
Altitude: 37.2°
Azimuth: 184.1°
Direction: South
See also NGC 1990 rise and set times.
Given its visual magnitude of 1.69, NGC 1990 is visible to the naked eye under dark skies, might require a small binocular from light polluted areas.
Photometric information of NGC 1990
The following table lists the magnitude of NGC 1990 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.
Celestial coordinates and finder chart of NGC 1990
Celestial coordinates for the J2000 equinox of NGC 1990 are provided in the following table:
The simplified sky charts below show the position of NGC 1990 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 1990 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
Today's NGC 1990 (Alnilam) - Star in Orion rise, transit and set times from Greenwich, United Kingdom are the following (all times relative to the local timezone Europe/London):