Gilbert Rotary Centennial Observatory
- In the Sky for October 2017 -

Source: EVAC October Newsletter

The Moon & Planets: 

  • On Thursday, October 5, about 5:30 AM, you can see 3 objects within half a degree of each other. Venus (magnitude -4) is in the middle. Mars (magnitude 2) is to the lower right. Sigma Leonis (magnitude 4) is to the upper left. Later that evening, the full Moon rises spoiling any chance of seeing faint fuzzies for the night.

  • On Wednesday, October 11, at 11:17 PM the last quarter moon rises.

  • On Sunday, October 15, at 3:14 AM, the star, Regulus, appears from behind the dark limb of the Moon. The star will be only 9 degrees above the horizon.

  • On Thursday, October 19, it is new Moon and you have all night to hunt for faint fuzzies.

  • On Friday, October 27, it is rst quarter Moon, which sets at 11:58 PM.

Evening Planets (after sunset): 

  • Jupiter, W
  • Mercury, W
  • Saturn, SW
  • Neptune, SE
  • Uranus, W

Morning Planets (before sunrise): 

  • Uranus, W
  • Venus, E
  • Mars, E

Phases of the Moon: 

Phase Date Time Current Moon Info
Full Moon October 5 2:40 PM MT

Description: Description: Description: Description: Click for Gilbert, Arizona Forecast

Last Quarter Moon October 12 8:25 am MT
New Moon October 19 3:12 pm MT
First Quarter Moon October 27 6:22 pm MT


There are no comets brighter than magnitude 8 visible this month.


The Orionid meteor shower peaks on October 21, although there may be some activity as early as October 2 or as late as November 7. There will be a New Moon just two days before the peak, so viewing should be good; expect about 20 meteors per hour. These meteors are debris from a stream left by a previous passage of Halley's Comet.