Meteors
alpha-Centaurids
General data
| Shower | alpha-Centaurids |
|---|---|
| IAU Shower Number | 102 |
| IMO Acronym | ACE |
| Activity interval | Jan 28 - Feb 20 |
| Date of maximum in 2011 | February 8 11h UT |
| Geocentric Velocity | 56 km/s |
| Population index | 2.0 |
Notes:
- Population index gives the magnitude distribution of the shower meteors: indexes below 2.5 correspond to distributions where bright meteors are more frequent than average, while values over 3.0 mean that the fraction of faint meteors is larger than usual.
Description
A minor southern hemisphere shower, with bright meteors. Had more activity in the past than currently, with many fireballs accounted. In 1980 had a small outburst, and since then its activity has been quite small.
Radiant position and activity
Local circumstances have been computed for latitude ? and longitude ?. Click on any of the two coordinates to set them manually with a map.
| Date | R.A. | Decl. | ZHR | Rise | % moon |
|---|---|---|---|---|---|
| Maximum | 211° | -58° | 6 | 21 | |
| September 7 (0h UTC) | Inactive | ||||
Meaning of columns is the following:
- R.A. and Decl.: Right ascension and declination of radiant at maximum, referred to ICRS. ICRS is the reference system used by modern star catalogs.
- ZHR: Zenith Hourly Rate. It is the maximum number of meteors that an observer could see under ideal conditions, with clear skies and the radiant at zenith.
- Rise: Time of geometric rise of the radiant, expressed in local time. Symbol * means that the radiant is circumpolar for your latitude.
- % Moon: Percentage of Moon's illumination at 0h UTC of the given date.
If you are in doubt about these concepts, please visit the meteor area.