55 Persei

Altitude: -4.3° Azimuth: 3.3° Direction: North

55 Persei is a main-sequence star in the constellation of Perseus.

55 Persei visual magnitude is 5.73. Because of its reltive faintness, 55 Persei 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 55 Persei:

Color of 55 Persei ⬤

Magnitude of 55 Persei 5.73

Class Main-sequence

VISIBILITY RIGHT NOW

55 Persei is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -4.3°
Azimuth: 3.3°
Direction: North

Celestial coordinates and finder chart of 55 Persei

55 Persei is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 55 Persei are provided in the following table:

Right Ascension J2000 04h 24m 29s

Declination J2000 +34° 07’ 50”

Galactic Longitude 165.38°

Galactic Latitude -10.65°

Constellation Perseus

The simplified sky map below shows the position of 55 Persei in the sky:

Simplified finder chart for 55 Persei.

Visibility of 55 Persei 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 55 Persei 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: 55.9° RISE 2:35

Max altitude: 72.7° TRANSIT 12:25

Azimuth: 304.1° SET 22:16

RIGHT NOW 55 Persei is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of 55 Persei

The image below is a photograph of 55 Persei 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 55 Persei is 0.019 arcsec per year in Right Ascension and -0.044 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 55 Persei. The red arrow shows the motion of 55 Persei during the next 10000 years (3.17 arcmin in Right Ascension and -7.33 arcmin in declination);

Distance of 55 Persei from the Sun and relative movement

55 Persei is distant 610.49 light years from the Sun and it is moving far from the Sun at the speed of 5 kilometers per second.

Distance (parsec) 187.27 pc

Distance (light year) 610.49 ly

Heliocentric radial velocity 5 km/s

Proper Motion RA 0.019 arcsec/year

Proper Motion Dec -0.044 arcsec/year

Spectral properties of 55 Persei

55 Persei belongs to spectral class B8 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -0.63

Spectral Type B8V

Color Index (B-V) -0.06

Temperature of 55 Persei 10941K

The red dot in the diagram below shows where 55 Persei is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 55 Persei. Attribution: Richard Powell / CC BY-SA

Alternative designations of 55 Persei

Flamsteed designation 55 Persei

Henry Draper Catalogue HD27777

SAO Catalogue SAO57212

Hipparcos Catalogue HIP20579

Durchmusterung Catalogue BD+33 853

In Evidence

Other stars in Perseus