δ Equulei (delta Equulei)

Below the horizon. Rise: 21:04 | Tran: 3:57 | Set: 10:47

Alt: -4.44° Az: 67.65° Direction: South-West

δ Equulei is a multiple main-sequence star of spectral class F5 in the constellation of Equuleus.

δ Equulei visual magnitude is 4.49. Because of its moderate brightness, δ Equulei is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

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);

Celestial Coordinates

Apparent

Right Ascension 21h 15m 43s

Declination +10° 06’ 49”

Hour Angle 16h 37m 59s

Sidereal Time 13h 53m 42s

J2000

Right Ascension 21h 14m 28s

Declination +10° 00’ 24”

Galactic Coordinates

Galactic Longitude 60.5°

Galactic Latitude -25.65°

Finder Chart

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Finder chart for δ Equulei (delta Equulei).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.49

Class Main-sequence

Absolute magnitude 3.16

Spectral Type F5V

Color Index (B-V) 0.5

Temperature 6389K

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

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

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:

Main star magnitude 4.49

Secondary star magnitude 4.79

Magnitude difference 0.3

Separation 0.2 arcsec

Distance, Radial Speed, Proper Motion

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.

Distance (parsec) 18.48

Distance (light year) 60.25

Radial Speed -15 km/s

Proper Motion RA 0.049 arcsec/y

Proper Motion Dec -0.305"/y

Alternative Designations

Bayer designation δ Equulei
(delta Equulei)

Flamsteed designation 7 Equulei

Henry Draper Catalogue HD202275

SAO Catalogue SAO126643

Hipparcos Catalogue HIP104858

Durchmusterung Catalogue BD+09 4746

Gliese Catalogue Gl 822 A

Aitken Double Star Catalogue ADS14773

Visibility from Your Location

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

Azimuth: 79.9° RISE 21:04

Max altitude: 48.6° TRANSIT 3:57

Azimuth: 280.1° SET 10:47

Set Location

Other stars in Equuleus