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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:42  
clear_day Transit: 12:10  
SunsetSet: 17:40
sleep NighttimeWhat's Visible Now?
All Constellations » Aquarius » 

ω2 Aquarii (omega2 Aquarii)

Altitude: -45.6°   Azimuth: 314.9°   Direction: North-West

ω2 Aquarii is a double main-sequence star in the constellation of Aquarius.

ω2 Aquarii visual magnitude is 4.49. Because of its moderate brightness, ω2 Aquarii should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of ω2 Aquarii is 0.101 arcsec per year in Right Ascension and -0.066 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of ω2 Aquarii (omega2 Aquarii) star
DSS2 image of ω2 Aquarii. The red arrow shows the motion of ω2 Aquarii during the next 1000 years (1.68 arcmin in Right Ascension and -1.10 arcmin in declination);

Key facts about ω2 Aquarii


ω2 Aquarii (omega2 Aquarii) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -45.6°
Azimuth: 314.9°
Direction: North-West

Celestial coordinates and finder chart of ω2 Aquarii

ω2 Aquarii is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of ω2 Aquarii are provided in the following table:

23h 42m 43s
-14° 32’ 41”

The simplified sky map below shows the position of ω2 Aquarii in the sky:

Finder chart ω2 Aquarii (omega2 Aquarii) star
Simplified finder chart for ω2 Aquarii (omega2 Aquarii).

Visibility of ω2 Aquarii 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 ω2 Aquarii (omega2 Aquarii) 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: 104.5°
Max altitude: 24.0°
Azimuth: 255.5°

Distance of ω2 Aquarii from the Sun and relative movement

ω2 Aquarii is distant 154.06 light years from the Sun and it is moving far from the Sun at the speed of 3 kilometers per second.

47.26 pc
154.06 ly
3 km/s
0.101 arcsec/year
-0.066 arcsec/year

Spectral properties of ω2 Aquarii

ω2 Aquarii belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where ω2 Aquarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ω2 Aquarii. Attribution: Richard Powell / CC BY-SA

ω2 Aquarii star system properties

ω2 Aquarii is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the ω2 Aquarii double sysyem:

5 arcsec

Alternative designations of ω2 Aquarii

ω2 Aquarii
(omega2 Aquarii)
105 Aquarii
Wo 9836 A