Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:48  
clear_day Transit: 12:56  
SunsetSet: 21:05 south
sunny DaytimeWhat's Visible Now
All Constellations » Aquarius » 

103 Aquarii

103 Aquarii is a giant star in the constellation of Aquarius.

103 Aquarii visual magnitude is 5.34. Because of its reltive faintness, 103 Aquarii should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about 103 Aquarii:

103 Aquarii is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 17°.

Celestial coordinates and finder chart of 103 Aquarii

103 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 103 Aquarii are provided in the following table:

23h 41m 34s
-18° 01’ 37”

The simplified sky map below shows the position of 103 Aquarii in the sky:

Finder chart 103 Aquarii star
Simplified finder chart for 103 Aquarii.

Visibility of 103 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 103 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: 108.0°
Max altitude: 20.5°
Azimuth: 252.0°
103 Aquarii is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 103 Aquarii

The image below is a photograph of 103 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 103 Aquarii is -0.039 arcsec per year in Right Ascension and -0.071 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 103 Aquarii star
DSS2 image of 103 Aquarii. The red arrow shows the motion of 103 Aquarii during the next 10000 years (-6.50 arcmin in Right Ascension and -11.83 arcmin in declination);

Distance of 103 Aquarii from the Sun and relative movement

103 Aquarii is distant 584.23 light years from the Sun and it is moving far from the Sun at the speed of 25 kilometers per second.

179.21 pc
584.23 ly
25 km/s
-0.039 arcsec/year
-0.071 arcsec/year

Spectral properties of 103 Aquarii

103 Aquarii belongs to spectral class K5 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where 103 Aquarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 103 Aquarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 103 Aquarii

103 Aquarii