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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: 7:01  
clear_day Transit: 12:12  
SunsetSet: 17:24
sleep NighttimeWhat's Visible Now?
All Constellations » Lepus » 

HR2166

Altitude: 3.4°   Azimuth: 227.7°   Direction: South-West

HR2166 is a variable giant star in the constellation of Lepus.

HR2166 visual magnitude is 5.78. Because of its reltive faintness, HR2166 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The proper motion of HR2166 is 0.004 arcsec per year in Right Ascension and -0.016 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2166 star
DSS2 image of HR2166. The red arrow shows the motion of HR2166 during the next 10000 years (0.67 arcmin in Right Ascension and -2.67 arcmin in declination);

Key facts about HR2166

5.78
Giant

HR2166 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 3.4°
Azimuth: 227.7°
Direction: South-West

Celestial coordinates and finder chart of HR2166

HR2166 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 HR2166 are provided in the following table:

06h 06m 57s
-21° 48’ 46”
228.22°
-19.19°
Lepus

The simplified sky map below shows the position of HR2166 in the sky:

Finder chart HR2166 star
Simplified finder chart for HR2166.

Visibility of HR2166 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 HR2166 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: 111.8°
Max altitude: 16.7°
Azimuth: 248.2°

Distance of HR2166 from the Sun and relative movement

HR2166 is distant 931.43 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

285.71 pc
931.43 ly
8 km/s
0.004 arcsec/year
-0.016 arcsec/year

Spectral properties of HR2166

HR2166 belongs to spectral class M4 and has a luminosity class of III corresponding to a giant star.

-1.50
M4III
3594K

The red dot in the diagram below shows where HR2166 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR2166. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2166

SAO171251
SAO171251