42 Aquilae

Altitude: 33.5° Azimuth: 189.5° Direction: South

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

42 Aquilae visual magnitude is 5.46. Because of its reltive faintness, 42 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 42 Aquilae:

Color of 42 Aquilae ⬤

Magnitude of 42 Aquilae 5.46

Class Sub-giant

VISIBILITY RIGHT NOW

42 Aquilae is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 33.5°
Azimuth: 189.5°
Direction: South

Celestial coordinates and finder chart of 42 Aquilae

42 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 42 Aquilae are provided in the following table:

Right Ascension J2000 19h 37m 47s

Declination J2000 -04° 38’ 50”

Galactic Longitude 34.06°

Galactic Latitude -12.42°

Constellation Aquila

The simplified sky map below shows the position of 42 Aquilae in the sky:

Simplified finder chart for 42 Aquilae.

Visibility of 42 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 42 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: 94.6° RISE 9:26

Max altitude: 33.9° TRANSIT 15:00

Azimuth: 265.4° SET 20:35

Digitized Sky Survey image of 42 Aquilae

The image below is a photograph of 42 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 42 Aquilae is 0.107 arcsec per year in Right Ascension and -0.051 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

DSS2 image of 42 Aquilae. The red arrow shows the motion of 42 Aquilae during the next 1000 years (1.78 arcmin in Right Ascension and -0.85 arcmin in declination);

Distance of 42 Aquilae from the Sun and relative movement

42 Aquilae is distant 104.69 light years from the Sun and it is moving towards the Sun at the speed of 38 kilometers per second.

Distance (parsec) 32.11 pc

Distance (light year) 104.69 ly

Heliocentric radial velocity -38 km/s

Proper Motion RA 0.107 arcsec/year

Proper Motion Dec -0.051 arcsec/year

Spectral properties of 42 Aquilae

42 Aquilae belongs to spectral class F3 and has a luminosity class of IV corresponding to a sub-giant star.

Absolute magnitude 2.93

Spectral Type F3IV

Color Index (B-V) 0.43

Temperature of 42 Aquilae 6724K

The red dot in the diagram below shows where 42 Aquilae is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 42 Aquilae. Attribution: Richard Powell / CC BY-SA

Alternative designations of 42 Aquilae

Flamsteed designation 42 Aquilae

Henry Draper Catalogue HD185124

SAO Catalogue SAO143621

Hipparcos Catalogue HIP96556

Durchmusterung Catalogue BD-04 4861

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In Evidence

Other stars in Aquila