Neptune Viewing, 2017

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Christopher K.
Posts: 4331
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Neptune Viewing, 2017

Post by Christopher K. » January 18th, 2017, 4:50 pm

There are a scant number of evenings left to see Neptune before it ducks down into bright sunset--and only if your western horizon is clear.

Below are the altitudes at which Neptune can be found in the Baton Rouge evening after twilight is completed...
18 January = 21˚
20 January = 20˚
22 January = 18˚
24 January = 16˚
Twilight ends during this date span anywhere from 6:54pm to 6:58pm CST.

Christopher K.
Posts: 4331
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Neptune Viewing, 2017

Post by Christopher K. » September 4th, 2017, 7:06 pm

Neptune reaches opposition at midnight this coming nighttime period. It can be found, however, at 10pm tonight; it is 1˚07' east of the magnitude 3.7, K-class variable Lambda Aquarii. Neptune's bluish disk is about 2.4" across at this time.

Christopher K.
Posts: 4331
Joined: October 12th, 2009, 3:28 pm
Location: Baton Rouge, LA

Re: Neptune Viewing, 2017

Post by Christopher K. » October 29th, 2017, 6:26 pm

Tomorrow night's conjunction of Neptune with the Moon may be of assistance for those trying to find this planet, which can be elusive. To the west-northwest of the Moon (about 2˚51') is aforementioned K-class, magnitude 3.7 Lambda Aquarii. Centering onto that star with at least a four- or five-degree field of view will show, 0˚35' to its south, the planet Neptune. Neptune has a color that will distinguish it from any star. The planet should be about magnitude 7.9 right now.

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