A survey of southern hemisphere meteor showers

作者：Jenniskens Peter^*; Baggaley Jack; Crumpton Ian; Aldous Peter; Pokorny Petr; Janches Diego; Gural Peter S; Samuels Dave; Albers Jim; Howell Andreas; Johannink Carl; Breukers Martin; Odeh Mohammad; Moskovitz Nicholas; Collison Jack; Ganju Siddha

来源：Planetary and Space Science, 2018, 154: 21-29.

DOI：10.1016/j.pss.2018.02.013

• Meteor
• Meteor shower
• Meteoroid orbit
• Comet
• Southern hemisphere
• Shower lookup table

Results are presented from a video-based meteoroid orbit survey conducted in New Zealand between Sept. 2014 and Dec. 2016, which netted 24,906 orbits from +5 to-5 magnitude meteors. 44 new southern hemisphere meteor showers are identified after combining this data with that of other video-based networks. Results are compared to showers reported from recent radar-based surveys. We find that video cameras and radar often see different showers and sometimes measure different semi-major axis distributions for the same meteoroid stream. For identifying showers in sparse daily orbit data, a shower look-up table of radiant position and speed as a function of time was created. This can replace the commonly used method of identifying showers from a set of mean orbital elements by using a discriminant criterion, which does not fully describe the distribution of meteor shower radiants over time.

• 出版日期2018-5