φ Leonis (phi Leonis)

Below the horizon. Rise: 5:24 | Tran: 11:03 | Set: 16:42

Alt: -35.57° Az: 320.16° Direction: North-West

φ Leonis is a double sub-giant star of spectral class A7 in the constellation of Leo.

φ Leonis visual magnitude is 4.47. Because of its moderate brightness, φ Leonis 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 φ Leonis. The red arrow shows the motion of φ Leonis during the next 1000 years (-1.80 arcmin in Right Ascension and -0.60 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 11h 17m 55s

Declination -03° 47’ 13”

Hour Angle 09h 54m 04s

Sideral Time 21h 11m 59s

J2000

Right Ascension 11h 16m 39s

Declination -03° 39’ 06”

Galactic Coordinates

Galactic Longitude 262.66°

Galactic Latitude 51.65°

Finder Chart

Simplified finder chart for φ Leonis (phi Leonis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.47

Class Sub-giant

Absolute magnitude 0.58

Spectral Type A7IV

Color Index (B-V) 0.21

Temperature 8086K

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

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

Star System Properties

φ 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 φ Leonis double sysyem:

Main star magnitude 4.47

Secondary star magnitude 9.17

Magnitude difference 4.7

Separation 96.9 arcsec

Distance, Radial Speed, Proper Motion

φ Leonis is distant 195.33 light years from the Sun and it is moving towards the Sun at the speed of 3 kilometers per second.

Distance (parsec) 59.92

Distance (light year) 195.33

Radial Speed -3 km/s

Proper Motion RA -0.108 arcsec/y

Proper Motion Dec -0.036"/y

Alternative Designations

Bayer designation φ Leonis
(phi Leonis)

Flamsteed designation 74 Leonis

Henry Draper Catalogue HD98058

SAO Catalogue SAO138102

Hipparcos Catalogue HIP55084

Durchmusterung Catalogue BD-02 3315

FK5 Catalogue 1292

Visibility from Your Location

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

Azimuth: 93.8° RISE 5:24

Max altitude: 34.7° TRANSIT 11:03

Azimuth: 266.2° SET 16:42

Set Location

Other stars in Leo