HR2787

HR2787 is a variable and multiple main-sequence star in the constellation of Puppis.

HR2787 visual magnitude is 4.66. Because of its moderate brightness, HR2787 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 HR2787:

Color of HR2787 ⬤

Magnitude of HR2787 4.66

Class Main-sequence

VISIBILITY RIGHT NOW HR2787 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Celestial coordinates and finder chart of HR2787

HR2787 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 HR2787 are provided in the following table:

Right Ascension J2000 07h 18m 18s

Declination J2000 -36° 44’ 03”

Galactic Longitude 248.78°

Galactic Latitude -10.91°

Constellation Puppis

The simplified sky map below shows the position of HR2787 in the sky:

Simplified finder chart for HR2787.

Visibility of HR2787 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 HR2787 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: 126.7° RISE 14:33

Max altitude: 1.8° TRANSIT 15:54

Azimuth: 233.3° SET 17:15

RIGHT NOW HR2787 is below the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR2787

The image below is a photograph of HR2787 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 HR2787 is -0.003 arcsec per year in Right Ascension and 0.001 arcsec per year in Declination and the associated displacement for the next 100000 years is represented with the red arrow.

DSS2 image of HR2787. The red arrow shows the motion of HR2787 during the next 100000 years (-5.00 arcmin in Right Ascension and 1.67 arcmin in declination);

Distance of HR2787 from the Sun and relative movement

HR2787 is distant 846.75 light years from the Sun and it is moving far from the Sun at the speed of 19 kilometers per second.

Distance (parsec) 259.74 pc

Distance (light year) 846.75 ly

Heliocentric radial velocity 19 km/s

Proper Motion RA -0.003 arcsec/year

Proper Motion Dec 0.001 arcsec/year

Spectral properties of HR2787

HR2787 belongs to spectral class B2 and has a luminosity class of V corresponding to a main-sequence star.

Absolute magnitude -2.41

Spectral Type B2V

Color Index (B-V) -0.1

Temperature of HR2787 11573K

The red dot in the diagram below shows where HR2787 is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of HR2787. Attribution: Richard Powell / CC BY-SA

HR2787 star system properties

HR2787 is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the HR2787 double sysyem:

Main star magnitude 4.66

Secondary star magnitude 5.06

Magnitude difference 0.4

Separation 239.9 arcsec

Alternative designations of HR2787

Henry Draper Catalogue HD57150

SAO Catalogue SAO197824

Hipparcos Catalogue HIP35363

Durchmusterung Catalogue CD-36 3512

General Catalogue of Variable Stars NV Pup

In Evidence

Other stars in Puppis