请问Tumbling Iridium是什么意思？
calsky卫星预报的一个栏目，预报的内容都是些亮度很低（8、9等开外）的卫星，不知道是什么意思，请达人帮忙解惑，多谢了。 1# phenix应该是说铱星的某个状态。 2# positron
翻滚？？理解不了啊，还有亮度预报
Tumbling IridiumThe prediction of Iridium flares is only possible in case the satellite is still controlled. There are already several satellites, that are out of control and not used for predictions. Hence it happens by accident, that the mirroring antennas are in the right geometry with you and still produce a show. Actually, this presentation is even more striking, since it consists of a periodic series of dazzling flashes. Inbetween, you can track the satellite with binoculars. CalSky predicts the opportunities of the show of the tumbling Iridiums. Each of the tumling Iridiums has its own characteristic flashing pattern - some with a period of only 1 seconds, where others flash every 40 seconds.
You find the transit times of these satellites on this page: wait and try to estimate the flashing period.
Display daytime passes as well
http://www.calsky.com/icon/close.pngprocessing your request... please be patient.
It may take up to two minutes, depending on the current workload.
Thursday 25 June 2009TimeObject (Link)Eventhttp://www.calsky.com/observer/icons/esync.gif Observer SiteUser Site, China
WGS84: Lon: +126d22m48.0sLat: +45d31m48.0sAlt: 202m
All times in UTC+8http://www.calsky.com/observer/icons/esync.gif20h04m44shttp://www.calsky.com/observer/icons/icon-sat1.png Iridium 24 tum
(25105 1997-082-B)
→Ground track →Star charthttp://www.calsky.com/observer/icons/asv/asv011008.pngDescending Orbit. Earth revolutions since launch: 60383.4
Flashes: Period 15 sec, with add. irreglar flashes
Appears 19h58m29s11.3magaz:340.3° NNWhorizon
Culmination20h04m44s 9.7magaz:283.2° WNWh:16.3°
distance: 1897.1kmheight above Earth: 767.8kmelevation of sun: -6°
Disappears 20h10m57s 9.1magaz:225.5° SW horizon
http://www.calsky.com/observer/icons/esync.gif20h11m54shttp://www.calsky.com/observer/icons/icon-sat1.png Iridium 71 tum
(25320 1998-026-B)
→Ground track →Star charthttp://www.calsky.com/observer/icons/asv/asv011007.pngDescending Orbit. Earth revolutions since launch: 58464.4
Flashes: Irregular, interval between flashes from 2-140s
Appears 20h05m28s11.3magaz:341.6° NNWhorizon
Culmination20h11m54s 9.3magaz:282.0° WNWh:18.4°
distance: 1796.4kmheight above Earth: 772.1kmelevation of sun: -7°
Disappears 20h18m18s 9.0magaz:222.0° SW horizon
好深奥的词汇 支持2楼的观点.
会不会是铱星某种著名的状态.可是那些人造卫星? 是失去控制而无法调整姿态的卫星.字面意思是翻滚的.
铱星很亮的原因是有天线面板可以反射日光,而且天线面板的指向我们是可以知道的.翻滚的铱星因为天线面板方向不确定所以多数很暗.偶尔也有很亮的时候,那是人品爆发.
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