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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: 7:41  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
sleep NighttimeWhat's Visible Now?
All Constellations » Pisces » 

21 Piscium

Altitude: 6.2°   Azimuth: 264.0°   Direction: West

21 Piscium is a main-sequence star in the constellation of Pisces.

21 Piscium visual magnitude is 5.77. Because of its reltive faintness, 21 Piscium 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 21 Piscium:


21 Piscium is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 6.2°
Azimuth: 264.0°
Direction: West

Celestial coordinates and finder chart of 21 Piscium

21 Piscium 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 21 Piscium are provided in the following table:

23h 49m 27s
+01° 04’ 33”

The simplified sky map below shows the position of 21 Piscium in the sky:

Finder chart 21 Piscium star
Simplified finder chart for 21 Piscium.

Visibility of 21 Piscium 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 21 Piscium 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: 88.9°
Max altitude: 39.6°
Azimuth: 271.1°

Digitized Sky Survey image of 21 Piscium

The image below is a photograph of 21 Piscium 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 21 Piscium is -0.002 arcsec per year in Right Ascension and -0.03 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of 21 Piscium star
DSS2 image of 21 Piscium. The red arrow shows the motion of 21 Piscium during the next 10000 years (-0.33 arcmin in Right Ascension and -5.00 arcmin in declination);

Distance of 21 Piscium from the Sun and relative movement

21 Piscium is distant 267.43 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

82.03 pc
267.43 ly
5 km/s
-0.002 arcsec/year
-0.03 arcsec/year

Spectral properties of 21 Piscium

21 Piscium belongs to spectral class A5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where 21 Piscium is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of 21 Piscium. Attribution: Richard Powell / CC BY-SA

Alternative designations of 21 Piscium