42 Cassiopeiae

Altitude: 39.0° Azimuth: 338.6° Direction: North-North-West

42 Cassiopeiae is a variable main-sequence star in the constellation of Cassiopeia.

42 Cassiopeiae visual magnitude is 5.18. Because of its reltive faintness, 42 Cassiopeiae 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 Cassiopeiae:

Color of 42 Cassiopeiae ⬤

Magnitude of 42 Cassiopeiae 5.18

Class Main-sequence

VISIBILITY RIGHT NOW

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

Altitude: 39.0°
Azimuth: 338.6°
Direction: North-North-West

Celestial coordinates and finder chart of 42 Cassiopeiae

42 Cassiopeiae is situated close to the northern celestial pole and, as such, it is visible for most part of the year from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of 42 Cassiopeiae are provided in the following table:

Right Ascension J2000 01h 42m 55s

Declination J2000 +70° 37’ 21”

Galactic Longitude 127.21°

Galactic Latitude 8.18°

Constellation Cassiopeia

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

Simplified finder chart for 42 Cassiopeiae.

Visibility of 42 Cassiopeiae from your location

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

42 Cassiopeiae is circumpolar and transits at 08:48 UTC (altitude: 70.9°)

Digitized Sky Survey image of 42 Cassiopeiae

The image below is a photograph of 42 Cassiopeiae 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 Cassiopeiae is 0.077 arcsec per year in Right Ascension and -0.013 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

DSS2 image of 42 Cassiopeiae. The red arrow shows the motion of 42 Cassiopeiae during the next 10000 years (12.83 arcmin in Right Ascension and -2.17 arcmin in declination);

Distance of 42 Cassiopeiae from the Sun and relative movement

42 Cassiopeiae is distant 280.55 light years from the Sun and it is moving far from the Sun at the speed of 6 kilometers per second.

Distance (parsec) 86.06 pc

Distance (light year) 280.55 ly

Heliocentric radial velocity 6 km/s

Proper Motion RA 0.077 arcsec/year

Proper Motion Dec -0.013 arcsec/year

Spectral properties of 42 Cassiopeiae

42 Cassiopeiae belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude 0.51

Spectral Type B9V

Color Index (B-V) -0.04

Temperature of 42 Cassiopeiae 10653K

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

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

Alternative designations of 42 Cassiopeiae

Flamsteed designation 42 Cassiopeiae

Henry Draper Catalogue HD10250

SAO Catalogue SAO4470

Hipparcos Catalogue HIP8016

Durchmusterung Catalogue BD+69 114

General Catalogue of Variable Stars 590

In Evidence

Other stars in Cassiopeia