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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
SunriseRise: 6:46  
clear_day Transit: 12:11  
SunsetSet: 17:36
sunny DaytimeWhat's Visible Now?
All Constellations » Crater » 


Altitude: -43.3°   Azimuth: 74.3°   Direction: East-North-East

HR4428 is a multiple hypergiant star in the constellation of Crater.

HR4428 visual magnitude is 5.76. Because of its reltive faintness, HR4428 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR4428 is -0.048 arcsec per year in Right Ascension and 0.043 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4428 star
DSS2 image of HR4428. The red arrow shows the motion of HR4428 during the next 10000 years (-8.00 arcmin in Right Ascension and 7.17 arcmin in declination);

Key facts about HR4428


HR4428 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -43.3°
Azimuth: 74.3°
Direction: East-North-East

Celestial coordinates and finder chart of HR4428

HR4428 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 HR4428 are provided in the following table:

11h 29m 38s
-24° 27’ 47”

The simplified sky map below shows the position of HR4428 in the sky:

Finder chart HR4428 star
Simplified finder chart for HR4428.

Visibility of HR4428 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 HR4428 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: 114.5°
Max altitude: 14.1°
Azimuth: 245.5°

Distance of HR4428 from the Sun and relative movement

HR4428 is distant 403.47 light years from the Sun and it is moving towards the Sun at the speed of 2 kilometers per second.

123.76 pc
403.47 ly
-2 km/s
-0.048 arcsec/year
0.043 arcsec/year

Spectral properties of HR4428

HR4428 belongs to spectral class A0 and has a luminosity class of V corresponding to a hypergiant star.


The red dot in the diagram below shows where HR4428 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4428. Attribution: Richard Powell / CC BY-SA

HR4428 star system properties

HR4428 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 HR4428 double sysyem:

8.3 arcsec

Alternative designations of HR4428