ν1 Coronae Borealis (nu1 Coronae Borealis)

Above the horizon. Rise: 15:15 | Tran: 1:04 | Set: 10:49

Alt: 69.22° Az: 142.80° Direction: South-East

ν1 Coronae Borealis is a variable and multiple giant star of spectral class M2 in the constellation of Corona Borealis.

ν1 Coronae Borealis visual magnitude is 5.2. Because of its faintness, ν1 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 ν1 Coronae Borealis (nu1 Coronae Borealis) star

DSS2 image of ν1 Coronae Borealis. The red arrow shows the motion of ν1 Coronae Borealis during the next 10000 years (1.17 arcmin in Right Ascension and -6.17 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 23m 18s

Declination +33° 44’ 27”

Hour Angle 23h 00m 11s

Sidereal Time 15h 23m 30s

J2000

Right Ascension 16h 22m 21s

Declination +33° 47’ 57”

Galactic Coordinates

Galactic Longitude 54.82°

Galactic Latitude 44.55°

Finder Chart

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Finder chart for ν1 Coronae Borealis (nu1 Coronae Borealis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.2

Class Giant

Absolute magnitude -0.96

Spectral Type M2III

Color Index (B-V) 1.6

Temperature 3649K

The red dot in the diagram below shows where ν1 Coronae Borealis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ν1 Coronae Borealis. Attribution: Richard Powell / CC BY-SA

Star System Properties

ν1 Coronae Borealis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the ν1 Coronae Borealis double sysyem:

Main star magnitude 5.2

Secondary star magnitude 5.3

Magnitude difference 0.1

Separation 364.4 arcsec

Distance, Radial Speed, Proper Motion

ν1 Coronae Borealis is distant 555.37 light years from the Sun and it is moving towards the Sun at the speed of 13 kilometers per second.

Distance (parsec) 170.36

Distance (light year) 555.37

Radial Speed -13 km/s

Proper Motion RA 0.007 arcsec/y

Proper Motion Dec -0.037"/y

Alternative Designations

Bayer designation ν1 Coronae Borealis
(nu1 Coronae Borealis)

Flamsteed designation 20 Coronae Borealis

Henry Draper Catalogue HD147749

SAO Catalogue SAO65257

Hipparcos Catalogue HIP80197

Durchmusterung Catalogue BD+34 2773

General Catalogue of Variable Stars 7676

Visibility from Your Location

Today's ν1 Coronae Borealis (nu1 Coronae Borealis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 56.3° RISE 15:15

Max altitude: 72.3° TRANSIT 1:04

Azimuth: 303.7° SET 10:49

Set Location

Other stars in Corona Borealis