15 Monocerotis

Below the horizon. Rise: 0:55 | Tran: 7:47 | Set: 14:35

Alt: -22.10° Az: 36.18° Direction: North-East

15 Monocerotis is a variable and multiple main-sequence star of spectral class O7 in the constellation of Monoceros.

15 Monocerotis visual magnitude is 4.66. Because of its moderate brightness, 15 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.

DSS2 image of 15 Monocerotis. The red arrow shows the motion of 15 Monocerotis during the next 100000 years (5.00 arcmin in Right Ascension and -10.00 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 06h 42m 20s

Declination +09° 52’ 14”

Hour Angle 14h 14m 53s

Sideral Time 20h 57m 14s

J2000

Right Ascension 06h 40m 58s

Declination +09° 53’ 44”

Galactic Coordinates

Galactic Longitude 202.94°

Galactic Latitude 2.2°

Finder Chart

Simplified finder chart for 15 Monocerotis.

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.66

Class Main-sequence

Absolute magnitude -2.82

Spectral Type O7V

Color Index (B-V) -0.25

Temperature 14924K

The red dot in the diagram below shows where 15 Monocerotis is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of 15 Monocerotis. Attribution: Richard Powell / CC BY-SA

Star System Properties

15 Monocerotis is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the 15 Monocerotis double sysyem:

Main star magnitude 4.66

Secondary star magnitude 8.16

Magnitude difference 3.5

Separation 2.9 arcsec

Distance, Radial Speed, Proper Motion

15 Monocerotis is distant 1,021.94 light years from the Sun and it is moving far from the Sun at the speed of 33 kilometers per second.

Distance (parsec) 313.48

Distance (light year) 1,021.94

Radial Speed 33 km/s

Proper Motion RA 0.003 arcsec/y

Proper Motion Dec -0.006"/y

Alternative Designations

Flamsteed designation 15 Monocerotis

Henry Draper Catalogue HD47839

SAO Catalogue SAO114258

Hipparcos Catalogue HIP31978

Durchmusterung Catalogue BD+10 1220

General Catalogue of Variable Stars S Mon

Aitken Double Star Catalogue ADS5322

Visibility from Your Location

Today's 15 Monocerotis rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 80.1° RISE 0:55

Max altitude: 48.4° TRANSIT 7:47

Azimuth: 279.9° SET 14:35

Name:	Greenwich, UK
Latitude:	51° 28' 48.0" N
Longitude:	0° 0' 0.0" E
Timezone:	Europe/London

Location

Other stars in Monoceros