ρ2 Arietis (rho2 Arietis)

Altitude: -16.8° Azimuth: 335.2° Direction: North-North-West

ρ2 Arietis is a variable giant star in the constellation of Aries.

ρ2 Arietis visual magnitude is 5.91. Because of its reltive faintness, ρ2 Arietis 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 ρ2 Arietis:

Color of ρ2 Arietis ⬤

Magnitude of ρ2 Arietis 5.91

Class Giant

VISIBILITY RIGHT NOW

ρ2 Arietis (rho2 Arietis) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -16.8°
Azimuth: 335.2°
Direction: North-North-West

Celestial coordinates and finder chart of ρ2 Arietis

ρ2 Arietis 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 ρ2 Arietis are provided in the following table:

Right Ascension J2000 02h 55m 48s

Declination J2000 +18° 19’ 54”

Galactic Longitude 159.93°

Galactic Latitude -35.45°

Constellation Aries

The simplified sky map below shows the position of ρ2 Arietis in the sky:

Finder chart ρ2 Arietis (rho2 Arietis) star

Simplified finder chart for ρ2 Arietis (rho2 Arietis).

Visibility of ρ2 Arietis 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 ρ2 Arietis (rho2 Arietis) 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: 71.7° RISE 14:30

Max altitude: 56.9° TRANSIT 22:05

Azimuth: 288.3° SET 5:45

Digitized Sky Survey image of ρ2 Arietis

The image below is a photograph of ρ2 Arietis 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 ρ2 Arietis is -0.008 arcsec per year in Right Ascension and -0.017 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of ρ2 Arietis. The red arrow shows the motion of ρ2 Arietis during the next 10000 years (-1.33 arcmin in Right Ascension and -2.83 arcmin in declination);

Distance of ρ2 Arietis from the Sun and relative movement

ρ2 Arietis is distant 403.47 light years from the Sun and it is moving far from the Sun at the speed of 46 kilometers per second.

Distance (parsec) 123.76 pc

Distance (light year) 403.47 ly

Heliocentric radial velocity 46 km/s

Proper Motion RA -0.008 arcsec/year

Proper Motion Dec -0.017 arcsec/year

Spectral properties of ρ2 Arietis

ρ2 Arietis belongs to spectral class M6 and has a luminosity class of III corresponding to a giant star.

Absolute magnitude 0.45

Spectral Type M6III

Color Index (B-V) 1.47

Temperature of ρ2 Arietis 3839K

The red dot in the diagram below shows where ρ2 Arietis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ρ2 Arietis. Attribution: Richard Powell / CC BY-SA

Alternative designations of ρ2 Arietis

Bayer designation ρ2 Arietis
(rho2 Arietis)

Flamsteed designation 45 Arietis

Henry Draper Catalogue HD18191

SAO Catalogue SAO93189

Hipparcos Catalogue HIP13654

Durchmusterung Catalogue BD+17 457

General Catalogue of Variable Stars RZ Ari

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