4.66
Apparent Mag2,500
Distance (ly)O7Ve
Spectral Type38,000
Temperature (K)S Monocerotis is a massive O-type star at the heart of the Christmas Tree Cluster (NGC 2264).
Stellar Data
Apparent Magnitude4.66
Absolute Magnitude-3.84
Distance2,500 light-years
Spectral TypeO7Ve
Temperature38,000 K
Luminosity200,000 L☉
Radius12 R☉
Mass29.1 M☉
Right Ascension06h 40m 58.7s
Declination+09° 53′ 44.7″
ConstellationMonoceros
Notable Facts
- S Monocerotis illuminates part of the Cone Nebula region
- It is at the heart of the Christmas Tree Cluster
- The star is about 200,000 times more luminous than the Sun