Your guide to the Solar System and the night sky
✖ By donating now you help keep this site alive and free from ads. Please consider supporting this project.
🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:45  ☀️ Transit: 13:03  🌅 Sunset: 19:23

How to support us

You won't see any ads here. If you find this website useful, please consider a donation to help cover the costs of the infrastructure needed to run this website. Thank you!

In Evidence

Best Places to See the 2024 American Eclipse Based on Historical Weather Data
Using historical cloud coverage data we suggest the locations that could provide the better chances to have clear skies on April 8, 2024 to observe the eclipse. Read more...
February 17, 2023
Where to See the Solar Eclipse of April 20 2023
Detailed information about how to observe the hybrid solar eclipse that will be visible on April 20 2023. Read more...
February 12, 2023

Other deep sky objects in Triangulum

NGC 684 - Spiral Galaxy in Triangulum

NGC 684 is a Spiral Galaxy in the Triangulum constellation. NGC 684 is situated north of the celestial equator and, as such, it is more easily visible from the northern hemisphere.

NGC 684
Galaxy
Triangulum
  • NGC 684 is above the horizon from Greenwich, United Kingdom [change]. Its current altitude is 57° above the horizon. See also rise and set times.
  • Given its B magnitude of 13.2, NGC 684 is visible with the help of a telescope havng an aperture of 10 inches (250mm) or more.
Available Resources for NGC 684 - Spiral Galaxy in Triangulum

Photometric information of NGC 684

The following table lists the magnitude of NGC 684 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).

13.2
9.88
9.09
8.79

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 684.

23.55 mag/arcsec2

Apparent size of NGC 684

The following table reports NGC 684 apparent angular size. The green area displayed on top of the DSS2 image of NGC 684 is a visual representation of it.
2.95 arcmin
0.82 arcmin
90°

Digitized Sky Survey image of NGC 684

The image below is a photograph of NGC 684 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 684 - Spiral Galaxy in Triangulum star
/>
DSS2 image of NGC 684 in the Red band. The green region on the image is a representation of the major (2.95 arcmin) and minor (0.82 arcmin) axes of the object's apparent size.

NGC 684 - Spiral Galaxy in Triangulum morphological classification

NGC 684 - Spiral Galaxy in Triangulum is classified as Spiral (SAb) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 684 - Spiral Galaxy in Triangulum in the Hubble de Vaucouleurs sequence.

NGC 684 - Spiral Galaxy in Triangulum
Visualization of the morphological classification of NGC 684 - Spiral Galaxy in Triangulum, Spiral (SAb).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Celestial coordinates and finder chart of NGC 684

Celestial coordinates for the J2000 equinox of NGC 684 are provided in the following table:

01h 50m 13s
+27° 38’ 44”

The simplified sky charts below show the position of NGC 684 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 684 - Spiral Galaxy in Triangulum star
Simplified finder chart for NGC 684 - Spiral Galaxy in Triangulum.

Finder chart NGC 684 - Spiral Galaxy in Triangulum star
Simplified finder chart for NGC 684 - Spiral Galaxy in Triangulum.

Rise ans set times of NGC 684 from your location

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

Today's NGC 684 - Spiral Galaxy in Triangulum rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 62.4°
Max altitude: 66.2°
Azimuth: 297.6°
NGC 684 - Spiral Galaxy in Triangulum is below the horizon from Greenwich, United Kingdom