Venus Near Inferior Conjunction (2009 Apr 9)

Comments and questions about the APOD on the main view screen.
Post Reply
User avatar
orin stepanek
Plutopian
Posts: 8200
Joined: Wed Jul 27, 2005 3:41 pm
Location: Nebraska

Venus Near Inferior Conjunction (2009 Apr 9)

Post by orin stepanek » Thu May 21, 2009 2:01 pm

http://apod.nasa.gov/apod/ap090409.html
Neat photo: 8) Wouldn't you have to look almost directly at the sun to see this awesome event? Does Venus make a transition of the Sun each time it is between the Earth and the sun? Or does the orbital plane of the planets sometimes present the line of sight between the Sun and the Earth cause The view of Venus to be a bit above of below the Sun as viewed from Earth? (not sure I presented that correctly) :? Anyway; from the photo; it doesn't look like a transition happened.

Orin

edited to corredt spelling on conjun(c)tion
Last edited by orin stepanek on Thu May 21, 2009 3:46 pm, edited 2 times in total.
Orin

Smile today; tomorrow's another day!

User avatar
neufer
Vacationer at Tralfamadore
Posts: 18805
Joined: Mon Jan 21, 2008 1:57 pm
Location: Alexandria, Virginia

Re: Venus Near Inferior Conjun(c)tion (2009 Apr 9)

Post by neufer » Thu May 21, 2009 3:16 pm

orin steanek wrote:http://apod.nasa.gov/apod/ap090409.html

Neat photo: 8) Wouldn't you have to look almost directly at the sun to see this awesome event? Does Venus make a transition of the Sun each time it is between the Earth and the sun? Or does the orbital plane of the planets sometimes present the line of sight between the Sun and the Earth cause The view of Venus to be a bit above of below the Sun as viewed from Earth? (not sure I presented that correctly) :? Anyway; from the photo; it doesn't look like a transition happened.
Venus was about 8½ degrees higher in the sky than the sun on March 26 and much
of the Rayleigh scattering was probably removed using a vertically polarizing filter.

March 26 is midway (three fifths) between the December 7th / June 7th nodal point
inferior conjunctions that occasionally give us Venus Transits (in pairs):

Code: Select all

TRANSIT starts at  9 Dec 1874   1:38
TRANSIT ends at    9 Dec 1874   6:36

TRANSIT starts at  6 Dec 1882  13:48
TRANSIT ends at    6 Dec 1882  20:22
.................................................
TRANSIT starts at  8 Jun 2004   5:07
TRANSIT ends at    8 Jun 2004  11:33

TRANSIT starts at  5 Jun 2012  22:03
TRANSIT ends at    6 Jun 2012   4:56
Note: There are 4 non-transit Venus inferior conjunctions between
the Venus Transit pair of 2004 / 2012 this was the penultimate one
[approximately (2/5)x 8 years before June 6, 2012].

Image
  • VENUSIAN MAN
Last edited by neufer on Thu May 21, 2009 8:14 pm, edited 8 times in total.
Art Neuendorffer

User avatar
orin stepanek
Plutopian
Posts: 8200
Joined: Wed Jul 27, 2005 3:41 pm
Location: Nebraska

Re: Venus Near Inferior Conjunction (2009 Apr 9)

Post by orin stepanek » Thu May 21, 2009 3:52 pm

Thanks Art. I thought that was the case; that a transition doesn't occur every orbit but wasn't positive. BTW Thanks for the Spelling correction; :oops: I edited to get it right. :?

Orin
Orin

Smile today; tomorrow's another day!

Post Reply