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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:57  
clear_day Transit: 12:48  
SunsetSet: 18:39 south
sleep NighttimeWhat's Visible Now
All Constellations » Delphinus » 

Musica - 18 Delphini

Altitude: 23.9°   Azimuth: 257.0°   Direction: West-South-West

Musica, also designated as 18 Delphini , is a multiple giant star in the constellation of Delphinus.

Musica visual magnitude is 5.48. Because of its reltive faintness, Musica 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 Musica:


Musica - 18 Delphini is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 23.9°
Azimuth: 257.0°
Direction: West-South-West

Celestial coordinates and finder chart of Musica

Musica 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 Musica are provided in the following table:

20h 58m 25s
+10° 50’ 21”

The simplified sky map below shows the position of Musica in the sky:

Finder chart Musica - 18 Delphini star
Simplified finder chart for Musica - 18 Delphini.

Visibility of Musica 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 Musica - 18 Delphini 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: 79.2°
Max altitude: 49.4°
Azimuth: 280.8°

Digitized Sky Survey image of Musica

The image below is a photograph of Musica 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 Musica is -0.051 arcsec per year in Right Ascension and -0.036 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Musica - 18 Delphini star
DSS2 image of Musica. The red arrow shows the motion of Musica during the next 10000 years (-8.50 arcmin in Right Ascension and -6.00 arcmin in declination);

Distance of Musica from the Sun and relative movement

Musica is distant 238.30 light years from the Sun

73.10 pc
238.30 ly
-0.051 arcsec/year
-0.036 arcsec/year

Spectral properties of Musica

Musica belongs to spectral class G6


The red dot in the diagram below shows where Musica is situated in the HertzsprungÔÇôRussell diagram.

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

Musica star system properties

Musica is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the Musica double sysyem:

198.2 arcsec

Alternative designations of Musica

18 Delphini