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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:52  
clear_day Transit: 12:11  
SunsetSet: 17:31
sleep NighttimeWhat's Visible Now?
All Constellations »  Andromeda »  Deep Sky Objects » 

NGC 841 - Spiral Galaxy in Andromeda

Altitude: -1.0°   Azimuth: 0.5°   Direction: North

NGC 841 is a Spiral Galaxy in the Andromeda constellation. NGC 841 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere.

The image below is a photograph of NGC 841 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).

Image of NGC 841 - Spiral Galaxy in Andromeda star
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DSS2 image of NGC 841 in the Red band. The green region on the image is a representation of the major (1.74 arcmin) and minor (0.87 arcmin) axes of the object's apparent size.

Key facts about NGC 841

NGC 841
Galaxy
Andromeda

NGC 841 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -1.0°
Azimuth: 0.5°
Direction: North

See also NGC 841 rise and set times.

Given its B magnitude of 12.8, NGC 841 is visible with the help of a telescope having an aperture of 10 inches (250mm) or more.

Available Resources for NGC 841 - Spiral Galaxy in Andromeda

Photometric information of NGC 841

The following table lists the magnitude of NGC 841 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).

12.8
10.3
9.59
9.38

For more information about photometry in astronomy, check the photometric system article on Wikipedia.

The surface brightess reported below is an indication of the brightness per unit of angular area of NGC 841.

22.93 mag/arcsec2

Apparent size of NGC 841

The following table reports NGC 841 apparent angular size. The green area displayed on top of the DSS2 image of NGC 841 is a visual representation of it.
1.74 arcmin
0.87 arcmin
134°

NGC 841 - Spiral Galaxy in Andromeda morphological classification

NGC 841 - Spiral Galaxy in Andromeda is classified as Spiral (SAab) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 841 - Spiral Galaxy in Andromeda in the Hubble de Vaucouleurs sequence.

NGC 841 - Spiral Galaxy in Andromeda
Visualization of the morphological classification of NGC 841 - Spiral Galaxy in Andromeda, Spiral (SAab).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 841

Celestial coordinates for the J2000 equinox of NGC 841 are provided in the following table:

02h 11m 17s
+37° 29’ 49”

The simplified sky charts below show the position of NGC 841 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

Finder chart NGC 841 - Spiral Galaxy in Andromeda star
Simplified finder chart for NGC 841 - Spiral Galaxy in Andromeda.

Finder chart NGC 841 - Spiral Galaxy in Andromeda star
Simplified finder chart for NGC 841 - Spiral Galaxy in Andromeda.

Rise and set times of NGC 841 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's NGC 841 - Spiral Galaxy in Andromeda rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.5°
Max altitude: 76.0°
Azimuth: 307.5°