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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: 6:40  
clear_day Transit: 12:10  
SunsetSet: 17:41
wb_twilight Nautical TwilightWhat's Visible Now?
All Constellations » Hydra » 


Altitude: 27.7°   Azimuth: 121.4°   Direction: East-South-East

HR3458 is a giant star in the constellation of Hydra.

HR3458 visual magnitude is 6.37. Because of its reltive faintness, HR3458 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 HR3458 is -0.032 arcsec per year in Right Ascension and -0.005 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3458 star
DSS2 image of HR3458. The red arrow shows the motion of HR3458 during the next 10000 years (-5.33 arcmin in Right Ascension and -0.83 arcmin in declination);

Key facts about HR3458


HR3458 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 27.7°
Azimuth: 121.4°
Direction: East-South-East

Celestial coordinates and finder chart of HR3458

HR3458 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 HR3458 are provided in the following table:

08h 43m 59s
+04° 20’ 04”

The simplified sky map below shows the position of HR3458 in the sky:

Finder chart HR3458 star
Simplified finder chart for HR3458.

Visibility of HR3458 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 HR3458 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: 85.7°
Max altitude: 42.9°
Azimuth: 274.3°

Distance of HR3458 from the Sun and relative movement

HR3458 is distant 737.56 light years from the Sun and it is moving far from the Sun at the speed of 34 kilometers per second.

226.24 pc
737.56 ly
34 km/s
-0.032 arcsec/year
-0.005 arcsec/year

Spectral properties of HR3458

HR3458 belongs to spectral class B9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR3458 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3458. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3458