Astronomical Information | 2016 | July
The sky of Tokyo
|5||Earth passes aphelion|
|7||Mercury at superior conjunction|
|12||First Quarter Moon|
|18||Ocean Day [Umi-no-hi](national holiday)|
|27||Last Quarter Moon|
|30||Uranus at stationary point/ Aquarid δ (Delta) Meteor Shower peaks around this time (The best visibility is after midnight for 6~7 days around this date. About 3 meteors per hour are expected. There is no moonlight after about the time the meteor shower passes maximum, so conditions are favorable.)|
The days for the peak activities of the meteor showers are based on the predictions of IMO (International Meteor Organization).
- Mercury appears close to the Sun and is not suited for observations. It reaches superior conjunction on the 7th.
- Venus appears close to the Sun and is not suited for observations.
- Located in the constellation Libra, Mars can be seen in the southern evening sky. Its brightness is -1.4 magnitude to -0.8 magnitude.
- Located in the constellation Leo, Jupiter can be seen in the western evening sky. Its brightness is -1.9 magnitude to -1.7 magnitude.
- Located in the constellation Ophiuchus, Saturn can be seen in the southern to southeastern evening sky. Its brightness is 0.2 magnitude to 0.3 magnitude.
With the “Sky Viewer” you can easily explore the appearance of a typical urban night sky (planets and constellations are visible).The Celestial Phenomena section of the glossary explains the planetary phenomena terms: greatest elongation, opposition, conjunction, stationary, etc.