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public LocationGreenwich, UK
Sunrise: 5:11 
Transit: 13:06 
Sunset: 21:00
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All Constellations »  Aries »  Deep Sky Objects » 

NGC 870 - Galaxy in Aries

Above the horizon.  Rise: 23:58 | Tran: 7:16 | Set: 14:30
Alt: 43.71°   Az: 230.24°   Direction: South-West

NGC 870 is a Galaxy in the Aries constellation. NGC 870 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. Given its B magnitude of 16, NGC 870 is visible only through long exposure photography.

The image below is a photograph of NGC 870 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 0.5000x0.5000 degrees (30.00x30.00 arcmins).

Image of NGC 870 - Galaxy in Aries star
DSS2 image of NGC 870 in the Red band. The green region on the image is a representation of the major (0.37 arcmin) and minor (0.34 arcmin) axes of the object's apparent size.

Celestial Coordinates


02h 18m 29s
+14° 38’ 09”
02h 20m 12s
04h 38m 42s


02h 17m 08s
+14° 31’ 23”

Finder Chart

The simplified sky charts below show the position of NGC 870 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 870 - Galaxy in Aries star
Simplified finder chart for NGC 870 - Galaxy in Aries.

Finder chart NGC 870 - Galaxy in Aries star
Simplified finder chart for NGC 870 - Galaxy in Aries.

Photometric Information

The following table lists the magnitude of NGC 870 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.

The surface brightess reported below is an indication of the brightness per unit of angular area of NGC 870.

22.98 mag/arcsec2

Apparent Size

The following table reports NGC 870 apparent angular size. The green area displayed on top of the DSS2 image of NGC 870 is a visual representation of it.
0.37 arcmin
0.34 arcmin

Rise and Set Times

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

Today's NGC 870 - Galaxy in Aries rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 75.4°
Max altitude: 53.2°
Azimuth: 284.6°