θ2 Serpentis (theta2 Serpentis)

Above the horizon. Rise: 22:01 | Tran: 4:25 | Set: 10:44

Alt: 22.33° Az: 112.82° Direction: East-South-East

θ2 Serpentis is a multiple main-sequence star of spectral class A5 in the constellation of Serpens.

θ2 Serpentis visual magnitude is 4.98. Because of its moderate brightness, θ2 Serpentis is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

Image of θ2 Serpentis (theta2 Serpentis) star

DSS2 image of θ2 Serpentis. The red arrow shows the motion of θ2 Serpentis during the next 10000 years (8.17 arcmin in Right Ascension and 4.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 18h 57m 30s

Declination +04° 14’ 11”

Hour Angle 20h 04m 59s

Sidereal Time 15h 02m 29s

J2000

Right Ascension 18h 56m 14s

Declination +04° 12’ 06”

Galactic Coordinates

Galactic Longitude 37.22°

Galactic Latitude 0.85°

Finder Chart

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Finder chart for θ2 Serpentis (theta2 Serpentis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.98

Class Main-sequence

Absolute magnitude 1.77

Spectral Type A5V

Color Index (B-V) 0.2

Temperature 8163K

The red dot in the diagram below shows where θ2 Serpentis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of θ2 Serpentis. Attribution: Richard Powell / CC BY-SA

Star System Properties

θ2 Serpentis is a visual double star which can be observed with binoculars or small telescopes. The table below shows key information about the θ2 Serpentis double sysyem:

Main star magnitude 4.98

Secondary star magnitude 5.38

Magnitude difference 0.4

Separation 22.2 arcsec

Distance, Radial Speed, Proper Motion

θ2 Serpentis is distant 142.73 light years from the Sun and it is moving towards the Sun at the speed of 53 kilometers per second.

Distance (parsec) 43.78

Distance (light year) 142.73

Radial Speed -53 km/s

Proper Motion RA 0.049 arcsec/y

Proper Motion Dec 0.026"/y

Alternative Designations

Bayer designation θ2 Serpentis
(theta2 Serpentis)

Flamsteed designation 63 Serpentis

Henry Draper Catalogue HD175639

SAO Catalogue SAO124070

Hipparcos Catalogue HIP92951

Durchmusterung Catalogue BD+04 3917

Aitken Double Star Catalogue ADS11853

Visibility from Your Location

Today's θ2 Serpentis (theta2 Serpentis) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 85.8° RISE 22:01

Max altitude: 42.8° TRANSIT 4:25

Azimuth: 274.2° SET 10:44

Set Location

Other stars in Serpens