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🌎  Greenwich, United Kingdom [change]

HR4821

HR4821 is a variable and multiple main-sequence star in the constellation of Corvus.

HR4821 visual magnitude is 6.08. Because of its reltive faintness, HR4821 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 HR4821:

6.08
Main-sequence
HR4821 is above the horizon from Greenwich, United Kingdom [change]. Altitude: 13°.

Celestial coordinates and finder chart of HR4821

HR4821 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 HR4821 are provided in the following table:

12h 41m 16s
-13° 00’ 48”
299.1°
49.78°
Corvus

The simplified sky map below shows the position of HR4821 in the sky:

Finder chart HR4821 star
Simplified finder chart for HR4821.

Visibility of HR4821 from your location

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

Today's HR4821 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 103.0°
Max altitude: 25.5°
Azimuth: 257.0°
HR4821 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR4821

The image below is a photograph of HR4821 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 HR4821 is -0.113 arcsec per year in Right Ascension and 0.019 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR4821 star
DSS2 image of HR4821. The red arrow shows the motion of HR4821 during the next 1000 years (-1.88 arcmin in Right Ascension and 0.32 arcmin in declination);

Distance of HR4821 from the Sun and relative movement

HR4821 is distant 278.16 light years from the Sun and it is moving towards the Sun at the speed of 14 kilometers per second.

85.32 pc
278.16 ly
-14 km/s
-0.113 arcsec/year
0.019 arcsec/year

Spectral properties of HR4821

HR4821 belongs to spectral class F3 and has a luminosity class of V corresponding to a main-sequence star.

1.42
F3V
10125K

The red dot in the diagram below shows where HR4821 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4821. Attribution: Richard Powell / CC BY-SA

HR4821 star system properties

HR4821 is a visual double star which can be observed with the help of small or medium telescopes. The table below shows key information about the HR4821 double sysyem:

6.08
6.18
0.1
5.4 arcsec

Alternative designations of HR4821

SAO157447
SAO157447