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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: 5:41  
clear_day Transit: 12:56  
SunsetSet: 20:12
sunny DaytimeWhat's Visible Now?
All Constellations » Serpens » 

HR6858

Altitude: -17.2°   Azimuth: 266.1°   Direction: West

HR6858 is a giant star in the constellation of Serpens.

HR6858 visual magnitude is 5.39. Because of its reltive faintness, HR6858 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 HR6858 is 0.037 arcsec per year in Right Ascension and -0.033 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR6858 star
DSS2 image of HR6858. The red arrow shows the motion of HR6858 during the next 10000 years (6.17 arcmin in Right Ascension and -5.50 arcmin in declination);

Key facts about HR6858

5.39
Giant

HR6858 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -17.2°
Azimuth: 266.1°
Direction: West

Celestial coordinates and finder chart of HR6858

HR6858 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 HR6858 are provided in the following table:

18h 20m 08s
-15° 49’ 54”
15.32°
-0.45°
Serpens

The simplified sky map below shows the position of HR6858 in the sky:

Finder chart HR6858 star
Simplified finder chart for HR6858.

Visibility of HR6858 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 HR6858 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: 105.8°
Max altitude: 22.7°
Azimuth: 254.2°

Distance of HR6858 from the Sun and relative movement

HR6858 is distant 470.42 light years from the Sun and it is moving far from the Sun at the speed of 31 kilometers per second.

144.30 pc
470.42 ly
31 km/s
0.037 arcsec/year
-0.033 arcsec/year

Spectral properties of HR6858

HR6858 belongs to spectral class K4 and has a luminosity class of III corresponding to a giant star.

-0.41
K4III
3839K

The red dot in the diagram below shows where HR6858 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR6858. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR6858

SAO161348
SAO161348