星图,你那个
Only calculate and display sun/moon crossers, and close encounters, but no visible passes
Maximum angular separation from Sun/Moon for close encounters:
1½° 5° 10° 15° or
Maximum distance to center line: 5 km 10 15 25 50 100 250 km
你怎么选的?选50km吗?
还有,你那个google earth是在哪儿下载的?把那网页告诉我们吧。 |