HR3820

Above the horizon. Rise: 1:33 | Tran: 10:46 | Set: 20:00

Alt: 66.16° Az: 142.57° Direction: South-East

HR3820 is a variable giant star of spectral class M2 in the constellation of Leo.

HR3820 visual magnitude is 5.56. Because of its faintness, HR3820 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.

DSS2 image of HR3820. The red arrow shows the motion of HR3820 during the next 10000 years (0.50 arcmin in Right Ascension and -6.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 09h 38m 10s

Declination +31° 02’ 59”

Hour Angle 22h 53m 21s

Sideral Time 08h 31m 31s

J2000

Right Ascension 09h 36m 42s

Declination +31° 09’ 42”

Galactic Coordinates

Galactic Longitude 195.41°

Galactic Latitude 47.63°

Finder Chart

Simplified finder chart for HR3820.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.56

Class Giant

Absolute magnitude -0.26

Spectral Type M2III

Color Index (B-V) 1.59

Temperature 3663K

The red dot in the diagram below shows where HR3820 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR3820. Attribution: Richard Powell / CC BY-SA

Distance, Radial Speed, Proper Motion

HR3820 is distant 474.53 light years from the Sun and it is moving towards the Sun at the speed of 20 kilometers per second.

Distance (parsec) 145.56

Distance (light year) 474.53

Radial Speed -20 km/s

Proper Motion RA 0.003 arcsec/y

Proper Motion Dec -0.039"/y

Alternative Designations

Henry Draper Catalogue HD83069

SAO Catalogue SAO61594

Hipparcos Catalogue HIP47168

Durchmusterung Catalogue BD+31 2011

FK5 Catalogue 2765

General Catalogue of Variable Stars 4545

Visibility from Your Location

Today's HR3820 rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 59.0° RISE 1:33

Max altitude: 69.6° TRANSIT 10:46

Azimuth: 301.0° SET 20:00

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Leo