The Solar Longitude (Abbrev: S.L., λ ☉) is 239 degrees, this value is the the date of maximum activity. It is measured as a degree with zero degree indicating spring equinox (roughly March 21st/22nd). 90 is the Summer Solstice, 180 is the Autumn Equinox and 270 is the Winter Solstice. This degree is independent of the calender. AMS .
The Alpha Monocerotids are one of two meteor Shower that occur in the vacinity of the constellation of Monoceros. The other one being simply named Monocerotids. Based on its radiate point location, the meteor shower could quite easily be credited to the Canis Minor with its bright star Alpha Canis Minoris Procyon which is far bigger than anything else in the vacinity. The name for the meteor shower is presumed to be because of its radiate centre is close to Alpha Monocerotis, although granted that the radiate point is closer to Zeta Monocerotis. The meteorites are believed to have come from a long period comet , one that has not been identified.
The closest star to the radiant point of the meteor shower is Alpha Monocerotis. The coordinates can also be determined by the Right Ascension (116.8) and the Declination (0.9).
The Zenith Hourly Rate or how many you expect to see during the hour is Var. The ZHR can radically increase if the comet or associated object is close by. The speed/velocity of the Meteor Shower particles is 63 km/s. The population index of the meteor shower is 2. The population index refers to the magnitude distribution of the meteorites, the smaller the index, the brighter the meteors are, the higher, the dimmer the meteors are. For this particular meteor shower, faint meteors are more frequent.
|Closest Star to Radiant Point||Alpha Monocerotis|
|Max Activity Date||21 Nov|
|Activity Period||Nov 15 - Nov 25|
|Solar Longitude / λ ☉||239 °|
|Zenith Hourly Rate||Var|