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Month:

  • Aug 2010
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    • Object:

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    • Event type:

  • Eclipses
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  • Lunar Phenomena (phases, apogee, perigee, nodes)
  • Earth's Seasons
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  • Greatest Elongations & Morning-Evening Status
  • Planet Finding: Constellations, Movement, & Morning-Evening Status
  • Transits
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  • Occultations

    • October 2009 astronomy events

    Jupiter is the brightest object in the southeast at dusk this month for northern hemisphere observers. It's among the faint stars of Capricorn. As the month goes along, the planet is closer to due south when darkness starts setting in. The moon passes by on the 26th and 27th.

    Mars is a midnight riser this month. The moon passes by on the 12th. By the end of the month, Mars is on the way up in the east as Jupiter sets in the west.

    Venus is above Mercury and Saturn in the morning twilight as October begins. This month, Venus will appear to drop toward the other two while Saturn and Mercury draw closer together. Mercury is side by side with Saturn on the 8th. Then Mercury becomes the lowest of the three objects. The three appear almost equidistant on the 10th. This may be the best time to identify Mercury if you have ever had trouble because of how easy it is to identify the other objects. Saturn and Venus are side by side less than a half degree apart on the 13th. Saturn stays on top after that. Expect a beautiful sight on the 16th when a waning fat crescent moon visits the trio. Mercury disappears in the sun's glare by the end of October, but Saturn and Venus remain easy to spot for most in the dawn.

    A notable occultation of a star by the moon this month is that of Alcyone on the 7th for viewers in parts of Africa, the Middle East, and southern Asia.

    The moon will be full on the 4th and new on the 18th.


    Some October 2009 astronomy events
    Date Time (UTC) Event
    4 05-hour Venus at perihelion
    4 6:10 Full Moon
    4 13-hour Mercury at perihelion
    5 15-hour Mars 5.912 degrees south of Pollux.
    6 01-hour Mercury at greatest elongation 17.9 degrees west of Sun.
    6 03-hour Moon 5.33 degrees south of Hamal.
    7 22:05 Moon occults Alcyone
    8 09-hour Saturn 0.314 degrees north of Mercury
    9 10-hour Northern lunistice. Moon 26.06 degrees north of the celestial equator.
    11 8:56 Last Quarter Moon
    11 19-hour Moon 6.529 degrees south of Pollux.
    12 01-hour Mars 1.083 degrees north of Moon
    12 11-hour Comet 88P/Howell at perihelion 1.363 AU (126,700,000 miles or 203,900,000 km)
    13 09-hour Jupiter resumes direct motion in Capricorn.
    13 12-hour Moon at perigee 0.002467 AU (229,356 miles or 369,034 km)
    13 15-hour Saturn 0.547 degrees north of Venus
    14 09-hour Moon 3.417 degrees south of Regulus.
    15 18-hour Moon at descending node.
    16 12-hour Saturn 6.951 degrees north of Moon
    16 18-hour Venus 6.530 degrees north of Moon
    17 11-hour Mercury 7.402 degrees north of Moon
    18 05-hour Moon 3.042 degrees south of Spica.
    18 5:33 New Moon
    21 14-hour Moon 1.040 degrees north of Antares.
    22 12-hour Southern lunistice. Moon 25.95 degrees south of the celestial equator.
    23 22-hour Mercury 3.840 degrees north of Spica.
    25 23-hour Moon at apogee 0.002702 AU (251,216 miles or 404,206 km)
    26 0:42 First Quarter Moon
    27 08-hour Jupiter 3.090 degrees south of Moon
    29 23-hour Moon at ascending node.