APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Comments and questions about the APOD on the main view screen.
User avatar
APOD Robot
Otto Posterman
Posts: 3021
Joined: Fri Dec 04, 2009 3:27 am

APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby APOD Robot » Sun Aug 21, 2016 4:05 am

Image Map of Total Solar Eclipse Path in 2017 August

Explanation: Would you like to see a total eclipse of the Sun? If so, do any friends or relatives live near the path of next summer's eclipse? If yes again, then you might want to arrange a visit for one year from today. Next year on this exact date, the path of a total solar eclipse will cut right across the center of the contiguous USA. All of North America and part of South America will experience, at the least, a partial solar eclipse. Featured here is a map of the path of totality, computed by eclipse expert Fred Espenak of NASA's GSFC. Many people who have seen a total solar eclipse tell stories about it for the rest of their lives. The last path of solar totality that included any part of the contiguous USA was in 1979, and the next two will be in 2024 and 2045.

<< Previous APOD This Day in APOD Next APOD >>

ezucker
Asternaut
Posts: 4
Joined: Fri Dec 02, 2011 7:10 am

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby ezucker » Sun Aug 21, 2016 9:00 am

The final sentence of today's text says: "The last path of solar totality that included any part of the contiguous USA was in 1979, and the next two will be in 2024 and 2045."

This is incorrect. Yes, the next one will be in 2024, but the one after that will be on August 23, 2044, followed the next year by a total solar eclipse on August 12, 2045.
http://eclipse.gsfc.nasa.gov/SEgoogle/S ... oogle.html

Evan Zucker
Totality Software, Inc.
San Diego, California

Jim Leff
Science Officer
Posts: 145
Joined: Thu Dec 09, 2010 2:00 pm

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby Jim Leff » Sun Aug 21, 2016 2:40 pm

I was a kid during the total eclipse of March 7, 1970, and remember it lasting over three minutes. I was taught at the time that "total" meant total. So how can this total eclipse be a minute shorter?

User avatar
Chris Peterson
Abominable Snowman
Posts: 13341
Joined: Wed Jan 31, 2007 11:13 pm
Location: Guffey, Colorado, USA

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby Chris Peterson » Sun Aug 21, 2016 2:56 pm

Jim Leff wrote:I was a kid during the total eclipse of March 7, 1970, and remember it lasting over three minutes. I was taught at the time that "total" meant total. So how can this total eclipse be a minute shorter?

The period of totality (along the center line) depends on many factors, such as where the Earth is in its orbit around the Sun (our orbit is not circular), where the Moon is in its around the Earth (also not circular), the angle the shadow line intersects the Earth's surface, and probably more. The geometry is complex.

At the simplest, just consider that that the distance from the Earth to the Moon changes, and therefore the apparent size of the Moon changes (there have been a number of APODs illustrating this). When the Moon appears larger, it will obscure the Sun for a longer time than when it appears smaller. When the Moon is at its farthest from us, it doesn't fully cover the Sun at all, and even a "total" eclipse won't be total, as in this annular "total" eclipse I shot through the clouds from San Diego in 1992.

Image
Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

User avatar
RJN
Baffled Boffin
Posts: 1398
Joined: Sat Jul 24, 2004 1:58 pm
Location: Michigan Tech

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby RJN » Sun Aug 21, 2016 5:07 pm

ezucker wrote:This is incorrect. Yes, the next one will be in 2024, but the one after that will be on August 23, 2044, followed the next year by a total solar eclipse on August 12, 2045.


Thanks, Evan. Fixed it. - RJN

ta152h0
Schooled
Posts: 1268
Joined: Mon Aug 29, 2005 12:46 am
Location: Auburn, Washington, USA

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby ta152h0 » Sun Aug 21, 2016 8:31 pm

Well within driving distance. Witnessed the last one in Goldendale, Washington 1978 i ELIEVE
Wolf Kotenberg

User avatar
Chris Peterson
Abominable Snowman
Posts: 13341
Joined: Wed Jan 31, 2007 11:13 pm
Location: Guffey, Colorado, USA

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby Chris Peterson » Sun Aug 21, 2016 8:39 pm

ta152h0 wrote:Well within driving distance. Witnessed the last one in Goldendale, Washington 1978 i ELIEVE

I'll be at next year's, of course. But I'm hoping to hang in there for 2045, when the centerline passes just a few miles south of my house. Won't even need to leave the rocking chair on my deck.
Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

Boomer12k
:---[===] *
Posts: 2113
Joined: Sun Apr 22, 2007 12:07 am

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby Boomer12k » Sun Aug 21, 2016 9:10 pm

This will be my Second.... I live in Salem, Oregon... I will have a Ring Side Seat...I shall try to get you some good shots...

:---[===] *

slee

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby slee » Sun Aug 21, 2016 9:45 pm

I live in Carbondale, IL, and Southern Illinois University is getting ready, the town is getting ready and the people are getting ready! :D

User avatar
alter-ego
Serendipitous Sleuthhound
Posts: 747
Joined: Mon Apr 21, 2008 4:51 am
Location: Redmond, WA

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby alter-ego » Mon Aug 22, 2016 3:39 am

For those who aren't aware of this, there's another good interactive site by Xavier Jubier found here. You can search the eclipse data base and get interactive maps for most, if not all, of the Five Millenium Canon of Solar Eclipses.
A pessimist is nothing more than an experienced optimist

Ctrl-Z

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby Ctrl-Z » Mon Aug 22, 2016 3:02 pm

I assume the blue lines are the extent of moon's shadow, and maybe the yellow perpendicular lines are each passing hour... but which hours of the day will this be occurring? Some sort of map legend would be helpful.

BillBixby
Science Officer
Posts: 100
Joined: Tue Jul 10, 2012 6:57 pm

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby BillBixby » Mon Aug 22, 2016 6:46 pm

Ctrl-Z wrote:I assume the blue lines are the extent of moon's shadow, and maybe the yellow perpendicular lines are each passing hour... but which hours of the day will this be occurring? Some sort of map legend would be helpful.


Click on the "featured here" link.

User avatar
bystander
Apathetic Retiree
Posts: 16417
Joined: Mon Aug 28, 2006 2:06 pm
Location: Oklahoma

Re: APOD: Map of Total Solar Eclipse Path in... (2016 Aug 21)

Postby bystander » Tue Feb 21, 2017 6:16 pm

Megamovie Project to Crowdsource Images of August Solar Eclipse
viewtopic.php?t=36877
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor


Return to “The Bridge: Discuss an Astronomy Picture of the Day”

Who is online

Users browsing this forum: No registered users and 3 guests