We use cookies to deliver essential features and to measure their performance. By using this site you accept our Privacy Policies.
A Complete Guide to the Solar System and the Night Sky
Help keep this site free and ads-free! Donate Now!
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 5:43  
clear_day Transit: 12:56  
SunsetSet: 20:10
sunny DaytimeWhat's Visible Now?
All Constellations »  Eridanus »  Deep Sky Objects » 

IC 399 - Irregular Galaxy in Eridanus

Altitude: 33.9°   Azimuth: 171.5°   Direction: South

IC 399 is a Irregular Galaxy in the Eridanus constellation. IC 399 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 IC 399 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 IC 399 - Irregular Galaxy in Eridanus star
/>
DSS2 image of IC 399 in the Red band. The green region on the image is a representation of the major (0.54 arcmin) and minor (0.45 arcmin) axes of the object's apparent size.

Key facts about IC 399

IC 399
Galaxy
Eridanus

IC 399 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 33.9°
Azimuth: 171.5°
Direction: South

See also IC 399 rise and set times.

Given its visual magnitude of 14.8, IC 399 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.

Available Resources for IC 399 - Irregular Galaxy in Eridanus

Photometric information of IC 399

The following table lists the magnitude of IC 399 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).

15
14.8
13.11
12.62
12.22

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 IC 399.

22.71 mag/arcsec2

Apparent size of IC 399

The following table reports IC 399 apparent angular size. The green area displayed on top of the DSS2 image of IC 399 is a visual representation of it.
0.54 arcmin
0.45 arcmin
81°

IC 399 - Irregular Galaxy in Eridanus morphological classification

IC 399 - Irregular Galaxy in Eridanus is classified as Irregular (I) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of IC 399 - Irregular Galaxy in Eridanus in the Hubble de Vaucouleurs sequence.

IC 399 - Irregular Galaxy in Eridanus
Visualization of the morphological classification of IC 399 - Irregular Galaxy in Eridanus, Irregular (I).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of IC 399

Celestial coordinates for the J2000 equinox of IC 399 are provided in the following table:

05h 01m 44s
-04° 17’ 20”

The simplified sky charts below show the position of IC 399 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 IC 399 - Irregular Galaxy in Eridanus star
Simplified finder chart for IC 399 - Irregular Galaxy in Eridanus.

Finder chart IC 399 - Irregular Galaxy in Eridanus star
Simplified finder chart for IC 399 - Irregular Galaxy in Eridanus.

Rise and set times of IC 399 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 IC 399 - Irregular Galaxy in Eridanus 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: 94.3°
Max altitude: 34.2°
Azimuth: 265.7°