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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: 6:57  
clear_day Transit: 12:11  
SunsetSet: 17:27
sunny DaytimeWhat's Visible Now?
All Constellations » Lepus » 


Altitude: -8.5°   Azimuth: 105.7°   Direction: East-South-East

HR1604 is a variable and multiple main-sequence star in the constellation of Lepus.

HR1604 visual magnitude is 5.66. Because of its reltive faintness, HR1604 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 HR1604 is -0.141 arcsec per year in Right Ascension and 0.148 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR1604 star
DSS2 image of HR1604. The red arrow shows the motion of HR1604 during the next 1000 years (-2.35 arcmin in Right Ascension and 2.47 arcmin in declination);

Key facts about HR1604


HR1604 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -8.5°
Azimuth: 105.7°
Direction: East-South-East

Celestial coordinates and finder chart of HR1604

HR1604 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 HR1604 are provided in the following table:

04h 59m 01s
-16° 22’ 32”

The simplified sky map below shows the position of HR1604 in the sky:

Finder chart HR1604 star
Simplified finder chart for HR1604.

Visibility of HR1604 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 HR1604 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: 106.4°
Max altitude: 22.1°
Azimuth: 253.6°

Distance of HR1604 from the Sun and relative movement

HR1604 is distant 140.70 light years from the Sun and it is moving far from the Sun at the speed of 30 kilometers per second.

43.16 pc
140.70 ly
30 km/s
-0.141 arcsec/year
0.148 arcsec/year

Spectral properties of HR1604

HR1604 belongs to spectral class F3 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1604 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR1604. Attribution: Richard Powell / CC BY-SA

HR1604 star system properties

HR1604 is a visual double star which can be observed only with the help of very large telescopes. The table below shows key information about the HR1604 double sysyem:

0.2 arcsec

Alternative designations of HR1604