Southern Colorado Skies / October 22-28, 2017

Consider a planetarium program to help you plan your observations. There are many commercial products available; an excellent program (STELLARIUM) is available free at


Early this week the Moon passes from Ophiuchus to Sagittarius in the southwestern sky just after dark, skimming over Saturn as it does so. (The “M” designations refer to Messier objects – for more information see

Monday (October 23)

Saturn is about 7 degrees left (east) of the waxing crescent Moon (see above graphic).

Tuesday (October 24)

Saturn now appears about 6 degrees to the lower right (west) of the waxing Moon (see above graphic).






Friday (October 27)

First-quarter Moon at 4:22 p.m. MDT.




Mercury (in Libra):

Mercury is hidden in the glare of the Sun.

Venus and Mars (both in Virgo):

Venus is still a brilliant “morning star” and rises during dawn, as does Mars; look very low on the horizon for Venus. The distance between Mars and Venus is increasing – as Venus gets lower Mars gets higher in the sky.

Jupiter (in Virgo):

Jupiter is now hidden in conjunction with the Sun.

Saturn (in Ophiuchus):

Saturn is visible in the south-southwest just after nightfall (see above graphic).

Uranus (in Pisces):

High in the east by mid-evening.

Neptune (in Aquarius):

High in the southeast by mid-evening.


The following data are based on my location in Pueblo West, Colorado. If you live well outside this area, you should consider checking this information for your location in order to be assured of accurate times, elevations, etc. If you’re unfamiliar with Iridium flares, check out my article at:

Sunday (October 22) 6:46:24 p.m. / Magnitude -8.3 / NNE / Elevation 60 degrees

Monday (October 23) 6:40:17 p.m. / Magnitude -2.2 / NNE / Elevation 61 degrees

Tuesday (October 24) 6:17:09 a.m. / Magnitude -3.5 / S / Elevation 36 degrees

Tuesday (October 24) 7:14:39 a.m. / Magnitude -5.4 / E / Elevation 82 degrees

Tuesday (October 24) 6:34:07 p.m. / Magnitude -5.5 / NNE / Elevation 64 degrees

Wednesday (October 25) 6:11:10 a.m. / Magnitude -7.3 / S / Elevation 35 degrees

Saturday (October 28) 6:31:11 a.m. / Magnitude -2.5 / ENE / Elevation 11 degrees


These are too numerous to list here! If you’re seriously interested, load the ISS DETECTOR app on your smart phone or tablet.

Carpe noctem

Dave Furry

Pueblo West, Colorado

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