superior conjunction การใช้

• In June 1984, Venus was at superior conjunction and passed behind the Sun as seen from Earth.
• Watson reported that it had a definite disk unlike stars, which appear in telescopes as mere points of light and that its phase indicated that it was approaching superior conjunction.
• The X-ray flux from Cygnus X-1 varies periodically every, especially during superior conjunction when the orbiting objects are most closely aligned with the Earth and the compact source is the more distant.
• The mass memory can store 500 kb and is mainly used when the probe is in superior conjunction relative to the Earth ( i . e . the Sun comes between the Earth and the spacecraft ).
• Venus ( and also Mercury ) is not visible from Earth when it is full, since at that time it is at superior conjunction, rising and setting concomitantly with the Sun and hence lost in the Sun's glare.
• The one-way communication delay due to the speed of light ranges from about 3 minutes at closest approach ( approximated by perihelion of Mars minus aphelion of Earth ) to 22 minutes at the largest possible superior conjunction ( approximated by aphelion of Mars plus aphelion of Earth ).
• Whereas the Venus almanac in the " Dresden Codex " documents the planet after inferior conjunction as the morning star, the " Grolier Codex " documents all four of the stations of Venus : rising after inferior conjunction as morning star in the east, disappearance before superior conjunction, reappearance as evening star in the west and disappearance before inferior conjunction.
• NASA has found that direct communication can be blocked for about two weeks every synodic period, around the time of superior conjunction when the Sun is directly between Mars and Earth, although the actual duration of the communications blackout varies from mission to mission depending on various factors such as the amount of link margin designed into the communications system, and the minimum data rate that is acceptable from a mission standpoint.