δ Monocerotis (delta Monocerotis)

Above the horizon. Rise: 8:09 | Tran: 14:05 | Set: 20:00

Alt: 34.24° Az: 209.15° Direction: South-West

δ Monocerotis is a double main-sequence star of spectral class A2 in the constellation of Monoceros.

δ Monocerotis visual magnitude is 4.15. Because of its moderate brightness, δ Monocerotis 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 δ Monocerotis (delta Monocerotis) star

DSS2 image of δ Monocerotis. The red arrow shows the motion of δ Monocerotis during the next 100000 years (-1.67 arcmin in Right Ascension and 8.33 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 07h 13m 09s

Declination -00° 32’ 12”

Hour Angle 01h 34m 58s

Sidereal Time 08h 48m 08s

J2000

Right Ascension 07h 11m 51s

Declination -00° 29’ 34”

Galactic Coordinates

Galactic Longitude 215.7°

Galactic Latitude 4.32°

Finder Chart

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Finder chart for δ Monocerotis (delta Monocerotis).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.15

Class Main-sequence

Absolute magnitude -1.15

Spectral Type A2V

Color Index (B-V) -0.01

Temperature 10252K

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

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

Star System Properties

δ Monocerotis 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 δ Monocerotis double sysyem:

Main star magnitude 4.15

Secondary star magnitude 13.35

Magnitude difference 9.2

Separation 32 arcsec

Distance, Radial Speed, Proper Motion

δ Monocerotis is distant 374.71 light years from the Sun and it is moving far from the Sun at the speed of 15 kilometers per second.

Distance (parsec) 114.94

Distance (light year) 374.71

Radial Speed 15 km/s

Proper Motion RA -0.001 arcsec/y

Proper Motion Dec 0.005"/y

Alternative Designations

Bayer designation δ Monocerotis
(delta Monocerotis)

Flamsteed designation 22 Monocerotis

Henry Draper Catalogue HD55185

SAO Catalogue SAO134330

Hipparcos Catalogue HIP34769

Durchmusterung Catalogue BD-00 1636

FK5 Catalogue 1187

Aitken Double Star Catalogue ADS5864

Visibility from Your Location

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

Azimuth: 90.5° RISE 8:09

Max altitude: 38.0° TRANSIT 14:05

Azimuth: 269.5° SET 20:00

Set Location

Other stars in Monoceros