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🌎  Greenwich, United Kingdom [change]

IC 4581 - Spiral Galaxy in Corona Borealis

IC 4581 is a Spiral Galaxy in the Corona Borealis constellation. IC 4581 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere.

IC 4581
Galaxy
Corona Borealis
  • IC 4581 is above the horizon from Greenwich, United Kingdom [change]. Its current altitude is 1° above the horizon. See also rise and set times.
  • Given its B magnitude of 15.3, IC 4581 is visible with the help of a telescope havng an aperture of 20 inches (500mm) or more.
Available Resources for IC 4581 - Spiral Galaxy in Corona Borealis

Photometric information of IC 4581

The following table lists the magnitude of IC 4581 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).

15.3
12.63
12.1
11.77

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 4581.

23.25 mag/arcsec2

Apparent size of IC 4581

The following table reports IC 4581 apparent angular size. The green area displayed on top of the DSS2 image of IC 4581 is a visual representation of it.
0.79 arcmin
0.6 arcmin
24°

Digitized Sky Survey image of IC 4581

The image below is a photograph of IC 4581 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 4581 - Spiral Galaxy in Corona Borealis star
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DSS2 image of IC 4581 in the Red band. The green region on the image is a representation of the major (0.79 arcmin) and minor (0.6 arcmin) axes of the object's apparent size.

IC 4581 - Spiral Galaxy in Corona Borealis morphological classification

IC 4581 - Spiral Galaxy in Corona Borealis is classified as Spiral (SAc) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of IC 4581 - Spiral Galaxy in Corona Borealis in the Hubble de Vaucouleurs sequence.

IC 4581 - Spiral Galaxy in Corona Borealis
Visualization of the morphological classification of IC 4581 - Spiral Galaxy in Corona Borealis, Spiral (SAc).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of IC 4581

Celestial coordinates for the J2000 equinox of IC 4581 are provided in the following table:

15h 44m 02s
+28° 16’ 37”

The simplified sky charts below show the position of IC 4581 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 4581 - Spiral Galaxy in Corona Borealis star
Simplified finder chart for IC 4581 - Spiral Galaxy in Corona Borealis.

Finder chart IC 4581 - Spiral Galaxy in Corona Borealis star
Simplified finder chart for IC 4581 - Spiral Galaxy in Corona Borealis.

Rise ans set times of IC 4581 from your location

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

Today's IC 4581 - Spiral Galaxy in Corona Borealis rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 61.7°
Max altitude: 66.8°
Azimuth: 298.3°
IC 4581 - Spiral Galaxy in Corona Borealis is below the horizon from Greenwich, United Kingdom