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public  Greenwich, UK Greenwich, UK  ⓘ
Timezone: Europe/London
Sunrise: 7:13 
Transit: 12:47 
Sunset: 18:20
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Other deep sky objects in Ursa Major
All Constellations »  Ursa Major »  Deep Sky Objects » 

NGC 5451 - HII Ionized region in Ursa Major

Above the horizon.  Circumpolar today
Alt: 18.79°   Az: 18.38°   Direction: North-North-East

NGC 5451 is a HII Ionized region in the Ursa Major constellation. NGC 5451 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere. Given its B magnitude of 16.7, NGC 5451 is visible only through long exposure photography.

The image below is a photograph of NGC 5451 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 5451 - HII Ionized region in Ursa Major star
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DSS2 image of NGC 5451 in the Red band. The green region on the image is a representation of the major (0.52 arcmin) and minor (0.31 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

14h 03m 29s
+54° 14’ 38”
14h 02m 52s
04h 06m 21s

J2000

14h 02m 36s
+54° 21’ 45”

Finder Chart

The simplified sky charts below show the position of NGC 5451 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 5451 - HII Ionized region in Ursa Major star
Simplified finder chart for NGC 5451 - HII Ionized region in Ursa Major.

Finder chart NGC 5451 - HII Ionized region in Ursa Major star
Simplified finder chart for NGC 5451 - HII Ionized region in Ursa Major.

Photometric Information

The following table lists the magnitude of NGC 5451 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).

16.7

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

Apparent Size

The following table reports NGC 5451 apparent angular size. The green area displayed on top of the DSS2 image of NGC 5451 is a visual representation of it.
0.52 arcmin
0.31 arcmin
58°

Rise and Set Times

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

NGC 5451 - HII Ionized region in Ursa Major is circumpolar and transits at 12:52 UTC (altitude: 87.2°)