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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
north SunriseRise: 7:44  
clear_day Transit: 11:48  
SunsetSet: 15:51 south
sleep NighttimeWhat's Visible Now?
All Constellations » Aquarius » 

ω1 Aquarii (omega1 Aquarii)

Altitude: 19.6°   Azimuth: 210.0°   Direction: South-South-West

ω1 Aquarii is a hypergiant star in the constellation of Aquarius.

ω1 Aquarii visual magnitude is 5. Because of its moderate brightness, ω1 Aquarii should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about ω1 Aquarii:


ω1 Aquarii (omega1 Aquarii) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 19.6°
Azimuth: 210.0°
Direction: South-South-West

Celestial coordinates and finder chart of ω1 Aquarii

ω1 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 ω1 Aquarii are provided in the following table:

23h 39m 47s
-14° 13’ 18”

The simplified sky map below shows the position of ω1 Aquarii in the sky:

Finder chart ω1 Aquarii (omega1 Aquarii) star
Simplified finder chart for ω1 Aquarii (omega1 Aquarii).

Visibility of ω1 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 ω1 Aquarii (omega1 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: 104.2°
Max altitude: 24.3°
Azimuth: 255.8°

Digitized Sky Survey image of ω1 Aquarii

The image below is a photograph of ω1 Aquarii 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). The proper motion of ω1 Aquarii is 0.057 arcsec per year in Right Ascension and -0.038 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of ω1 Aquarii (omega1 Aquarii) star
DSS2 image of ω1 Aquarii. The red arrow shows the motion of ω1 Aquarii during the next 10000 years (9.50 arcmin in Right Ascension and -6.33 arcmin in declination);

Distance of ω1 Aquarii from the Sun and relative movement

ω1 Aquarii is distant 133.72 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

41.02 pc
133.72 ly
-2 km/s
0.057 arcsec/year
-0.038 arcsec/year

Spectral properties of ω1 Aquarii

ω1 Aquarii belongs to spectral class F0 and has a luminosity class of IV corresponding to a hypergiant star.


The red dot in the diagram below shows where ω1 Aquarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of ω1 Aquarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of ω1 Aquarii

ω1 Aquarii
(omega1 Aquarii)
102 Aquarii