Celestial events of September

Celestial events of September

SEPTEMBER asteroids.

Yulia 150-kilometer (89 Julia) will be in opposition on September 22 in 2 weeks after the passage of the perihelion — the point closest to the Sun in its orbit. Therefore, the conditions for observing this object will be quite favorable. Because of the relatively dark surface of his brilliance will not exceed 9 th magnitude.

From the cover of the main stars of the asteroid belt objects should be noted occultation Star 6th magnitude NІR 19718 in the constellation Taurus 30-kilometer asteroid Gudiashvili (2595 Gudiachvjli), which will take place on the night of September 17 16na. The band most likely to take place by covering the East Kazakhstan (where the phenomenon will be visible low on the horizon) through Mongolia and northern China to the south of Primorye Territory and then to the island of Hokkaido.

Planetary connection.

In the middle of the month, Venus, which gradually moves away from the Sun, «ahead» in its movement along the ecliptic, would be in the sky not far from Saturn. The closest the apparent convergence of the planets occur in the evening on September 18.

In fact, in the space they will share more than 9.5 AU (1.43 billion km.). By the end of the month on the background of evening twilight seem Mercury. Mars and Jupiter is still best seen before dawn. Optimal conditions will be observing the most distant planets: Uranus will approach the configuration of opposition Neptune — leave it. Both planets culminate in September at midnight (the first — a little later, the second — respectively, earlier).

Start of astronomical autumn.

Passage of the center of the solar disk through the celestial equator from the northern to the southern hemisphere marking the autumn equinox and the beginning of astronomical autumn in the current year will happen on September 22 at 20 hours 44 minutes Universal Time. Due to the effect of atmospheric refraction day will remain longer than the night for another 2-3 days after (depending on latitude observations).

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