Your Guide to the Solar System and the Night Sky
This site is free and ad-free thanks to the support of our users. If you can, please consider a donation.
public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:00  
clear_day Transit: 12:48  
SunsetSet: 18:34 south
sleep NighttimeWhat's Visible Now
All Constellations » Crater » 


Altitude: -54.7°   Azimuth: 353.4°   Direction: North

HR4451 is a giant star in the constellation of Crater.

HR4451 visual magnitude is 6.05. Because of its reltive faintness, HR4451 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 HR4451:


HR4451 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -54.7°
Azimuth: 353.4°
Direction: North

Celestial coordinates and finder chart of HR4451

HR4451 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 HR4451 are provided in the following table:

11h 33m 14s
-16° 16’ 50”

The simplified sky map below shows the position of HR4451 in the sky:

Finder chart HR4451 star
Simplified finder chart for HR4451.

Visibility of HR4451 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 HR4451 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: 106.3°
Max altitude: 22.2°
Azimuth: 253.7°

Digitized Sky Survey image of HR4451

The image below is a photograph of HR4451 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 HR4451 is -0.002 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 HR4451 star
DSS2 image of HR4451. The red arrow shows the motion of HR4451 during the next 10000 years (-0.33 arcmin in Right Ascension and -7.17 arcmin in declination);

Distance of HR4451 from the Sun and relative movement

HR4451 is distant 400.49 light years from the Sun and it is moving towards the Sun at the speed of 4 kilometers per second.

122.85 pc
400.49 ly
-4 km/s
-0.002 arcsec/year
-0.043 arcsec/year

Spectral properties of HR4451

HR4451 belongs to spectral class F9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR4451 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4451. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4451