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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
north SunriseRise: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Lupus » 

φ2 Lupi (phi2 Lupi)

Altitude: -7.0°   Azimuth: 144.7°   Direction: South-East

φ2 Lupi is a main-sequence star in the constellation of Lupus.

φ2 Lupi visual magnitude is 4.54. Because of its moderate brightness, φ2 Lupi should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about φ2 Lupi:


φ2 Lupi (phi2 Lupi) is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -7.0°
Azimuth: 144.7°
Direction: South-East

Celestial coordinates and finder chart of φ2 Lupi

φ2 Lupi is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of φ2 Lupi are provided in the following table:

15h 23m 09s
-36° 51’ 30”

The simplified sky map below shows the position of φ2 Lupi in the sky:

Finder chart φ2 Lupi (phi2 Lupi) star
Simplified finder chart for φ2 Lupi (phi2 Lupi).

Visibility of φ2 Lupi 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 φ2 Lupi (phi2 Lupi) 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: 126.9°
Max altitude: 1.7°
Azimuth: 233.1°

Digitized Sky Survey image of φ2 Lupi

The image below is a photograph of φ2 Lupi from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of φ2 Lupi is -0.018 arcsec per year in Right Ascension and -0.023 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of φ2 Lupi (phi2 Lupi) star
DSS2 image of φ2 Lupi. The red arrow shows the motion of φ2 Lupi during the next 10000 years (-3.00 arcmin in Right Ascension and -3.83 arcmin in declination);

Distance of φ2 Lupi from the Sun and relative movement

φ2 Lupi is distant 605.95 light years from the Sun and it is moving far from the Sun at the speed of 2 kilometers per second.

185.87 pc
605.95 ly
2 km/s
-0.018 arcsec/year
-0.023 arcsec/year

Spectral properties of φ2 Lupi

φ2 Lupi belongs to spectral class B4 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where φ2 Lupi is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of φ2 Lupi. Attribution: Richard Powell / CC BY-SA

Alternative designations of φ2 Lupi

φ2 Lupi
(phi2 Lupi)