Your guide to the Solar System and the night sky
By donating now you help keep this site alive and free from ads. Please consider supporting this project, thank you!
🌎  Observing from: Greenwich, United Kingdom [change]

δ Equulei (delta Equulei)

δ Equulei is a multiple main-sequence star in the constellation of Equuleus.

δ Equulei visual magnitude is 4.49. Because of its moderate brightness, δ Equulei 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 δ Equulei:

δ Equulei (delta Equulei) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of δ Equulei

δ Equulei 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 δ Equulei are provided in the following table:

21h 14m 28s
+10° 00’ 24”

The simplified sky map below shows the position of δ Equulei in the sky:

Finder chart δ Equulei (delta Equulei) star
Simplified finder chart for δ Equulei (delta Equulei).

Visibility of δ Equulei from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's δ Equulei (delta Equulei) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 80.0°
Max altitude: 48.5°
Azimuth: 280.0°
δ Equulei (delta Equulei) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of δ Equulei

The image below is a photograph of δ Equulei 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 δ Equulei is 0.049 arcsec per year in Right Ascension and -0.305 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of δ Equulei (delta Equulei) star
DSS2 image of δ Equulei. The red arrow shows the motion of δ Equulei during the next 1000 years (0.82 arcmin in Right Ascension and -5.08 arcmin in declination);

Distance of δ Equulei from the Sun and relative movement

δ Equulei is distant 60.25 light years from the Sun and it is moving towards the Sun at the speed of 15 kilometers per second.

18.48 pc
60.25 ly
-15 km/s
0.049 arcsec/year
-0.305 arcsec/year

Spectral properties of δ Equulei

δ Equulei belongs to spectral class F5 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where δ Equulei is situated in the Hertzsprung–Russell diagram.

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

δ Equulei star system properties

δ Equulei 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 δ Equulei double sysyem:

0.2 arcsec

Alternative designations of δ Equulei

δ Equulei
(delta Equulei)
Gl 822 A