Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Deneb Algedi - δ Capricorni (delta Capricorni)

Deneb Algedi, also designated as δ Capricorni (delta Capricorni), is a variable and multiple star in the constellation of Capricornus.

Deneb Algedi visual magnitude is 2.87. Thanks to its high brightness, Deneb Algedi is clearly visible when observed from locations with dark skyes, and should be also quite easily visible from light polluted areas.

The table below summarizes the key facts about Deneb Algedi:

2.87
Deneb Algedi - δ Capricorni (delta Capricorni) is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of Deneb Algedi

Deneb Algedi 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 Deneb Algedi are provided in the following table:

21h 47m 02s
-16° 07’ 37”
37.6°
-46.01°
Capricornus

The simplified sky map below shows the position of Deneb Algedi in the sky:

Finder chart Deneb Algedi - δ Capricorni (delta Capricorni) star
Simplified finder chart for Deneb Algedi - δ Capricorni (delta Capricorni).

Visibility of Deneb Algedi from your location

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

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

Azimuth: 106.1°
Max altitude: 22.4°
Azimuth: 253.9°
Deneb Algedi - δ Capricorni (delta Capricorni) is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Deneb Algedi

The image below is a photograph of Deneb Algedi 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 Deneb Algedi is 0.263 arcsec per year in Right Ascension and -0.297 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of Deneb Algedi - δ Capricorni (delta Capricorni) star
DSS2 image of Deneb Algedi. The red arrow shows the motion of Deneb Algedi during the next 1000 years (4.38 arcmin in Right Ascension and -4.95 arcmin in declination);

Distance of Deneb Algedi from the Sun and relative movement

Deneb Algedi is distant 38.54 light years from the Sun and it is moving towards the Sun at the speed of 6 kilometers per second.

11.82 pc
38.54 ly
-6 km/s
0.263 arcsec/year
-0.297 arcsec/year

Spectral properties of Deneb Algedi

Deneb Algedi belongs to spectral class A Deneb Algedi is also a so called metallic star.

2.51
A
7526K

The red dot in the diagram below shows where Deneb Algedi is situated in the Hertzsprung–Russell diagram.

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

Deneb Algedi star system properties

Deneb Algedi 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 Deneb Algedi double sysyem:

2.87
4.87
2
0 arcsec

Alternative designations of Deneb Algedi

Deneb Algedi
δ Capricorni
(delta Capricorni)
49 Capricorni
SAO164644
SAO164644