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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: 6:04  
clear_day Transit: 12:06  
SunsetSet: 18:09
sunny DaytimeWhat's Visible Now?
All Constellations » Sagittarius » 

HR7658

Altitude: 13.7°   Azimuth: 160.4°   Direction: South-South-East

HR7658 is a main-sequence star in the constellation of Sagittarius.

HR7658 visual magnitude is 6.45. Because of its reltive faintness, HR7658 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 HR7658 is -0.042 arcsec per year in Right Ascension and 0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR7658 star
DSS2 image of HR7658. The red arrow shows the motion of HR7658 during the next 10000 years (-7.00 arcmin in Right Ascension and 3.33 arcmin in declination);

Key facts about HR7658

6.45
Main-sequence

HR7658 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 13.7°
Azimuth: 160.4°
Direction: South-South-East

Celestial coordinates and finder chart of HR7658

HR7658 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 HR7658 are provided in the following table:

20h 03m 44s
-22° 35’ 44”
19.39°
-25.48°
Sagittarius

The simplified sky map below shows the position of HR7658 in the sky:

Finder chart HR7658 star
Simplified finder chart for HR7658.

Visibility of HR7658 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 HR7658 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: 112.6°
Max altitude: 15.9°
Azimuth: 247.4°

Distance of HR7658 from the Sun and relative movement

HR7658 is distant 187.57 light years from the Sun and it is moving far from the Sun at the speed of 7 kilometers per second.

57.54 pc
187.57 ly
7 km/s
-0.042 arcsec/year
0.02 arcsec/year

Spectral properties of HR7658

HR7658 belongs to spectral class F6 and has a luminosity class of V corresponding to a main-sequence star.

2.65
F6V
6389K

The red dot in the diagram below shows where HR7658 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR7658. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR7658

SAO188863
SAO188863