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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sunny  • Daytime • What's Visible Now?

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Other deep sky objects in Orion
All Constellations »  Orion »  Deep Sky Objects » 

NGC 1684 - Elliptical Galaxy in Orion

Altitude: -34.2°   Azimuth: 318.4°   Direction: North-West

NGC 1684 is a Elliptical Galaxy in the Orion constellation. NGC 1684 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.

NGC 1684
Galaxy
Orion

NGC 1684 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -34.2°
Azimuth: 318.4°
Direction: North-West

See also NGC 1684 rise and set times.

Given its B magnitude of 13, NGC 1684 is visible with the help of a telescope having an aperture of 10 inches (250mm) or more.

Available Resources for NGC 1684 - Elliptical Galaxy in Orion

Photometric information of NGC 1684

The following table lists the magnitude of NGC 1684 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
9.6
8.93
8.69

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 1684.

23.88 mag/arcsec2

Apparent size of NGC 1684

The following table reports NGC 1684 apparent angular size. The green area displayed on top of the DSS2 image of NGC 1684 is a visual representation of it.
2.55 arcmin
1.66 arcmin
95°

Digitized Sky Survey image of NGC 1684

The image below is a photograph of NGC 1684 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 NGC 1684 - Elliptical Galaxy in Orion star
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DSS2 image of NGC 1684 in the Red band. The green region on the image is a representation of the major (2.55 arcmin) and minor (1.66 arcmin) axes of the object's apparent size.

NGC 1684 - Elliptical Galaxy in Orion morphological classification

NGC 1684 - Elliptical Galaxy in Orion is classified as Elliptical (E) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 1684 - Elliptical Galaxy in Orion in the Hubble de Vaucouleurs sequence.

NGC 1684 - Elliptical Galaxy in Orion
Visualization of the morphological classification of NGC 1684 - Elliptical Galaxy in Orion, Elliptical (E).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 1684

Celestial coordinates for the J2000 equinox of NGC 1684 are provided in the following table:

04h 52m 31s
-03° 06’ 21”

The simplified sky charts below show the position of NGC 1684 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 1684 - Elliptical Galaxy in Orion star
Simplified finder chart for NGC 1684 - Elliptical Galaxy in Orion.

Finder chart NGC 1684 - Elliptical Galaxy in Orion star
Simplified finder chart for NGC 1684 - Elliptical Galaxy in Orion.

Rise ans set times of NGC 1684 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 NGC 1684 - Elliptical Galaxy in Orion 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: 93.1°
Max altitude: 35.4°
Azimuth: 266.9°