The 1985 return of the Giacobinid meteor stream

The 1985 return of the Giacobinid meteor stream
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1985 年贾可宾尼德流星流回归

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发表时间:
1988
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影响因子:
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通讯作者:
B. Lindblad
B. Lindblad
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文献类型:
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作者:
B. Lindblad

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1985年Giacobinid流星雨的回归是在瑞典Onsala空间观测站进行的。观测结果显示,这场阵雨持续时间约为3小时,并在1985年10月8日协调世界时09时35分急剧上升至最大值。因此,这次流星雨显示出与1933年和1946年的强流星雨相同的短周期特征。流星回波率的峰值为75,出现在世界时09时30分至09时40分的10分钟间隔内。除去背景活动后,相应的最大阵雨天顶率为每小时484个回波。最大的流星雨降交点的经度是194°.55(春分1950年)。1985年流星雨中心部分的平面相对于彗星轨道平面在经度上偏移了0°.15。
Radar observations of the 1985 return of the Giacobinid meteor shower were carried out at the Onsala Space Observatory in Sweden. The observations showed that the shower was of approximately 3h duration, rising steeply to a maximum at 09h35m UT on 1985 October 8. The meteor shower thus showed the same short period characteristics as the intense showers of 1933 and 1946. Peak meteor echo rates of 75 occurred in the tenminute interval 09h30m−09h40m UT. The corresponding shower zenithal rate at maximum after removal of background activity was 484 echoes per hour. The longitude of the descending node of the shower at maximum was 194°.55 (equinox 1950). The plane of the central part of the 1985 shower was displaced by 0°.15 in longitude with respect to the orbital plane of the comet.