90 Leonis

Below the horizon. Rise: 13:27 | Tran: 20:52 | Set: 4:22

Alt: -9.41° Az: 47.57° Direction: North-East

90 Leonis is a multiple main-sequence star of spectral class B4 in the constellation of Leo.

90 Leonis visual magnitude is 5.95. Because of its faintness, 90 Leonis 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 90 Leonis. The red arrow shows the motion of 90 Leonis during the next 10000 years (-1.83 arcmin in Right Ascension and 0.50 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 11h 36m 01s

Declination +16° 39’ 23”

Hour Angle 15h 17m 52s

Sidereal Time 02h 53m 53s

J2000

Right Ascension 11h 34m 42s

Declination +16° 47’ 48”

Galactic Coordinates

Galactic Longitude 239.18°

Galactic Latitude 69.47°

Finder Chart

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Finder chart for 90 Leonis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 5.95

Class Main-sequence

Absolute magnitude -2.98

Spectral Type B4V

Color Index (B-V) -0.16

Temperature 12692K

The red dot in the diagram below shows where 90 Leonis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 90 Leonis. Attribution: Richard Powell / CC BY-SA

Star System Properties

90 Leonis 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 90 Leonis double sysyem:

Main star magnitude 5.95

Secondary star magnitude 7.05

Magnitude difference 1.1

Separation 3.6 arcsec

Distance, Radial Speed, Proper Motion

90 Leonis is distant 1,987.80 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

Distance (parsec) 609.76

Distance (light year) 1,987.80

Radial Speed 19 km/s

Proper Motion RA -0.011 arcsec/y

Proper Motion Dec 0.003"/y

Alternative Designations

Flamsteed designation 90 Leonis

Henry Draper Catalogue HD100600

SAO Catalogue SAO99673

Hipparcos Catalogue HIP56473

Durchmusterung Catalogue BD+17 2374

Aitken Double Star Catalogue ADS8220

Visibility from Your Location

Today's 90 Leonis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 73.3° RISE 13:27

Max altitude: 55.2° TRANSIT 20:52

Azimuth: 286.7° SET 4:22

Set Location

Other stars in Leo