The Sigma Hydrids meteor shower takes place within the boundaries constellation of Hydra. The meteor shower occurs between Dec 03 - Dec 15 with the peak occurring on the Dec 12 every year.
The Solar Longitude (Abbrev: S.L., λ ☉) is 252.9 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 closest star to the radiant point of the meteor shower is Minchir. The coordinates can also be determined by the Right Ascension (123.2) and the Declination (3).
The Zenith Hourly Rate or how many you expect to see during the hour is 3. The ZHR can radically increase if the comet or associated object is close by. The speed/velocity of the Meteor Shower particles is 59 km/s. The population index of the meteor shower is 3. 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, bright meteors are more frequent.
Hydra the constellation associated with this Meteor Shower is the biggest constellation in the sky. It represents in one legend the monster that Hercules slayed. Even though the constellation is big, the meteor shower on the other hand is very faint and not spectacular. Given the faintness and there not being many meteors in the shower, it could be assumed that the source of the material for this is a long-period comet and that what we hit is the last remaining remnants of its tail that has not yet burnt up.
Although visible on the horizon at 9 p.m., it is better to wait until later in the evening when you will be able to see them more clearly. They will be visible until the light of the next morning. If you know which star is Procyon, one of our brightest stars then you can use that as a guide. The meteor shower below and to the left of the star.
The best time to see them is from about 11 p.m. in an easterly direction, just above the head of the Hydra. They will remain visible for the rest of the night, disappearing when it becomes light.
|Closest Star to Radiant Point||Minchir|
|Peak Activity Date||Dec 12|
|Activity Period||Dec 03 - Dec 15|
|Solar Longitude / λ ☉||252.9 °|
|Zenith Hourly Rate||3|
The image showing the location of Sigma Hydrids was generated using the free application Night Vision.
There's no register feature and no need to give an email address if you don't need to. All messages will be reviewed before being displayed. Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.
You can decline to give a name which if that is the case, the comment will be attributed to a random star. A name is preferred even if its a random made up one by yourself.