φ Aquilae (phi Aquilae)

Altitude: -25.2° Azimuth: 19.5° Direction: North-North-East

φ Aquilae is a sub-giant star in the constellation of Aquila.

φ Aquilae visual magnitude is 5.28. Because of its reltive faintness, φ Aquilae should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about φ Aquilae:

Color of φ Aquilae ⬤

Magnitude of φ Aquilae 5.28

Class Sub-giant

VISIBILITY RIGHT NOW

φ Aquilae (phi Aquilae) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -25.2°
Azimuth: 19.5°
Direction: North-North-East

Celestial coordinates and finder chart of φ Aquilae

φ Aquilae is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of φ Aquilae are provided in the following table:

Right Ascension J2000 19h 56m 14s

Declination J2000 +11° 25’ 26”

Galactic Longitude 50.66°

Galactic Latitude -8.8°

Constellation Aquila

The simplified sky map below shows the position of φ Aquilae in the sky:

Finder chart φ Aquilae (phi Aquilae) star

Simplified finder chart for φ Aquilae (phi Aquilae).

Visibility of φ Aquilae from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

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

Azimuth: 78.6° RISE 8:22

Max altitude: 49.9° TRANSIT 15:19

Azimuth: 281.4° SET 22:15

Digitized Sky Survey image of φ Aquilae

The image below is a photograph of φ Aquilae from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of φ Aquilae is 0.034 arcsec per year in Right Ascension and 0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of φ Aquilae. The red arrow shows the motion of φ Aquilae during the next 10000 years (5.67 arcmin in Right Ascension and 1.50 arcmin in declination);

Distance of φ Aquilae from the Sun and relative movement

φ Aquilae is distant 205.81 light years from the Sun and it is moving towards the Sun at the speed of 27 kilometers per second.

Distance (parsec) 63.13 pc

Distance (light year) 205.81 ly

Heliocentric radial velocity -27 km/s

Proper Motion RA 0.034 arcsec/year

Proper Motion Dec 0.009 arcsec/year

Spectral properties of φ Aquilae

φ Aquilae belongs to spectral class A1 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 1.28

Spectral Type A1IV

Color Index (B-V) -0.01

Temperature of φ Aquilae 10252K

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

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

Alternative designations of φ Aquilae

Bayer designation φ Aquilae
(phi Aquilae)

Flamsteed designation 61 Aquilae

Henry Draper Catalogue HD188728

SAO Catalogue SAO105438

Hipparcos Catalogue HIP98103

Durchmusterung Catalogue BD+11 4055

FK5 Catalogue 3590

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In Evidence

Other stars in Aquila