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public  Greenwich, UK Greenwich, UK  ⓘ
Timezone: Europe/London
Sunrise: 5:05 
Transit: 12:56 
Sunset: 20:48
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In Evidence

New Comet C/2025 J1 (Borisov) Discovered in May 2025
Detailed information about the discovery of Comet C/2025 J1 (Borisov) and pointers to useful resources to track and observe it. Read more...

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

NGC 1633 - Intermediate Spiral Galaxy in Taurus

Above the horizon.  Rise: 7:20 | Tran: 13:55 | Set: 20:31
Alt: 32.15°   Az: 236.96°   Direction: West-South-West

NGC 1633 is a Intermediate Spiral Galaxy in the Taurus constellation. NGC 1633 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. Given its B magnitude of 14.6, NGC 1633 is visible with the help of a telescope having an aperture of 20 inches (500mm) or more.

The image below is a photograph of NGC 1633 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 1633 - Intermediate Spiral Galaxy in Taurus star
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DSS2 image of NGC 1633 in the Red band. The green region on the image is a representation of the major (1.09 arcmin) and minor (0.9 arcmin) axes of the object's apparent size.

Celestial Coordinates

Apparent

04h 41m 31s
+07° 23’ 50”
03h 02m 48s
07h 44m 19s

J2000

04h 40m 09s
+07° 20’ 57”

Finder Chart

The simplified sky charts below show the position of NGC 1633 in the sky. The first chart has a field of view of 60° while the second one has a field of view of 10°.

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Finder chart for NGC 1633 - Intermediate Spiral Galaxy in Taurus.

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Finder chart for NGC 1633 - Intermediate Spiral Galaxy in Taurus.

Photometric Information

The following table lists the magnitude of NGC 1633 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).

14.6
11.28
10.58
10.33

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 1633.

23.34 mag/arcsec2

Apparent Size

The following table reports NGC 1633 apparent angular size. The green area displayed on top of the DSS2 image of NGC 1633 is a visual representation of it.
1.09 arcmin
0.9 arcmin
5°

Morphological Classification

NGC 1633 - Intermediate Spiral Galaxy in Taurus is classified as Intermediate Spiral (SABa) according to the Hubble and de Vaucouleurs galaxy morphological classification. The diagram below shows a visual representation of the position of NGC 1633 - Intermediate Spiral Galaxy in Taurus in the Hubble de Vaucouleurs sequence.

NGC 1633 - Intermediate Spiral Galaxy in Taurus
Visualization of the morphological classification of NGC 1633 - Intermediate Spiral Galaxy in Taurus, Intermediate Spiral (SABa).
Credits for the background image: Antonio Ciccolella / M. De Leo / CC BY

Rise and Set Times

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

Today's NGC 1633 - Intermediate Spiral Galaxy in Taurus rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 82.6°
Max altitude: 45.9°
Azimuth: 277.4°