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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
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All Constellations »  Ara »  Deep Sky Objects » 

IC 4642 - Planetary Nebula in Ara

Altitude: -19.9°   Azimuth: 198.0°   Direction: South-South-West

IC 4642 is a Planetary Nebula in the Ara constellation. IC 4642 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere.

The image below is a photograph of IC 4642 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 4642 - Planetary Nebula in Ara star
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DSS2 image of IC 4642 in the Red band. The green region on the image is a representation of the major (0.28 arcmin) and minor (0.28 arcmin) axes of the object's apparent size.

Key facts about IC 4642

IC 4642
Planetary Nebula
Ara

IC 4642 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -19.9°
Azimuth: 198.0°
Direction: South-South-West

See also IC 4642 rise and set times.

Given its B magnitude of 13.4, IC 4642 is visible with the help of a telescope having an aperture of 10 inches (250mm) or more.

Available Resources for IC 4642 - Planetary Nebula in Ara

Photometric information of IC 4642

The following table lists the magnitude of IC 4642 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).

13.4

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

Apparent size of IC 4642

The following table reports IC 4642 apparent angular size. The green area displayed on top of the DSS2 image of IC 4642 is a visual representation of it.
0.28 arcmin
0.28 arcmin

Celestial coordinates and finder chart of IC 4642

Celestial coordinates for the J2000 equinox of IC 4642 are provided in the following table:

17h 11m 44s
-55° 23’ 56”

The simplified sky charts below show the position of IC 4642 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 4642 - Planetary Nebula in Ara star
Simplified finder chart for IC 4642 - Planetary Nebula in Ara.

Finder chart IC 4642 - Planetary Nebula in Ara star
Simplified finder chart for IC 4642 - Planetary Nebula in Ara.

Rise and set times of IC 4642 from your location

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

IC 4642 - Planetary Nebula in Ara is currently not visible from Greenwich, United Kingdom edit_location_alt