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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Aquarius » 

42 Aquarii

Altitude: -8.5°   Azimuth: 100.0°   Direction: East

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

42 Aquarii visual magnitude is 5.34. Because of its reltive faintness, 42 Aquarii should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of 42 Aquarii is 0.015 arcsec per year in Right Ascension and 0.006 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 42 Aquarii star
DSS2 image of 42 Aquarii. The red arrow shows the motion of 42 Aquarii during the next 10000 years (2.50 arcmin in Right Ascension and 1.00 arcmin in declination);

Key facts about 42 Aquarii


42 Aquarii is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -8.5°
Azimuth: 100.0°
Direction: East

Celestial coordinates and finder chart of 42 Aquarii

42 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 42 Aquarii are provided in the following table:

22h 16m 48s
-12° 49’ 53”

The simplified sky map below shows the position of 42 Aquarii in the sky:

Finder chart 42 Aquarii star
Simplified finder chart for 42 Aquarii.

Visibility of 42 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 42 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: 102.8°
Max altitude: 25.7°
Azimuth: 257.2°

Distance of 42 Aquarii from the Sun and relative movement

42 Aquarii is distant 483.68 light years from the Sun and it is moving far from the Sun at the speed of 13 kilometers per second.

148.37 pc
483.68 ly
13 km/s
0.015 arcsec/year
0.006 arcsec/year

Spectral properties of 42 Aquarii

42 Aquarii belongs to spectral class K0


The red dot in the diagram below shows where 42 Aquarii is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 42 Aquarii. Attribution: Richard Powell / CC BY-SA

Alternative designations of 42 Aquarii