λ Coronae Borealis (lambda Coronae Borealis)

Below the horizon. Rise: 11:48 | Tran: 22:55 | Set: 10:06

Alt: -0.65° Az: 0.02° Direction: South-West

λ Coronae Borealis is a double hypergiant star of spectral class F0 in the constellation of Corona Borealis.

λ Coronae Borealis visual magnitude is 5.45. Because of its faintness, λ Coronae Borealis is visible to the naked eye only from locations with very dark skies, while it is not visible at all from skies affected by light pollution.

Image of λ Coronae Borealis (lambda Coronae Borealis) star

DSS2 image of λ Coronae Borealis. The red arrow shows the motion of λ Coronae Borealis during the next 10000 years (5.17 arcmin in Right Ascension and 13.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 15h 56m 43s

Declination +37° 52’ 26”

Hour Angle 12h 00m 05s

Sidereal Time 03h 56m 49s

J2000

Right Ascension 15h 55m 47s

Declination +37° 56’ 48”

Galactic Coordinates

Galactic Longitude 60.6°

Galactic Latitude 50.1°

Finder Chart

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Finder chart for λ Coronae Borealis (lambda Coronae Borealis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.45

Class Hypergiant

Absolute magnitude 2.36

Spectral Type F0IV

Color Index (B-V) 0.33

Temperature 7276K

The red dot in the diagram below shows where λ Coronae Borealis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of λ Coronae Borealis. Attribution: Richard Powell / CC BY-SA

Star System Properties

λ Coronae Borealis 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 λ Coronae Borealis double sysyem:

Main star magnitude 5.45

Secondary star magnitude 9.95

Magnitude difference 4.5

Separation 94.3 arcsec

Distance, Radial Speed, Proper Motion

λ Coronae Borealis is distant 135.16 light years from the Sun and it is moving towards the Sun at the speed of 12 kilometers per second.

Distance (parsec) 41.46

Distance (light year) 135.16

Radial Speed -12 km/s

Proper Motion RA 0.031 arcsec/y

Proper Motion Dec 0.083"/y

Alternative Designations

Bayer designation λ Coronae Borealis
(lambda Coronae Borealis)

Flamsteed designation 12 Coronae Borealis

Henry Draper Catalogue HD142908

SAO Catalogue SAO64974

Hipparcos Catalogue HIP78012

Durchmusterung Catalogue BD+38 2712

Gliese Catalogue Wo 9531

FK5 Catalogue 3259

Visibility from Your Location

Today's λ Coronae Borealis (lambda Coronae Borealis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 52.1° RISE 11:48

Max altitude: 76.4° TRANSIT 22:55

Azimuth: 307.9° SET 10:06

Set Location

Other stars in Corona Borealis