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Posts Tagged ‘Superior conjunction’

03/26/2021 – Ephemeris – Venus passes beyond the Sun this morning

March 26, 2021 Comments off

This is Ephemeris for Friday, March 26th. Today the Sun will be up for 12 hours and 29 minutes, setting at 8:03, and it will rise tomorrow at 7:32. The Moon, 2 days before full, will set at 7:24 tomorrow morning.

Early this morning the planet Venus was in conjunction with the Sun. It was a superior conjunction, meaning it was out beyond the Sun. When Venus ducks between the Earth and the Sun it’s called an inferior conjunction. Here the words superior and inferior do not have their normal meanings. Inferior means inside and superior means outside. Indeed, I find inferior conjunctions far superior to superior conjunctions. For the inferior conjunction, Venus is close to us, so it appears big, bigger than Jupiter in telescopes. It only disappears in the glare of the Sun for 8 days or so. Around superior conjunctions Venus is tiny, and it disappears in the glare of the Sun for 50 or more days. Rare inferior conjunctions will see Venus cross or transit the face of the Sun.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

SOHO image of the Sun with Venus below

Solar and Heliospheric Observatory (SOHO) LASCO C2 coronagraph image of the Sun and Venus below and beyond the Sun. The white circle shows the size of the photosphere of the Sun.

10/24/2014 -Ephemeris – Venus will pass superior conjunction with the Sun tomorrow

October 24, 2014 Comments off

Ephemeris for Friday, October 24th.  The sun will rise at 8:09.  It’ll be up for 10 hours and 33 minutes, setting at 6:43.   The moon, 1 day past new, will set at 7:20 this evening.

Tomorrow’s event will not be visible.  Venus will pass behind the Sun, though not directly behind it.  Venus can be viewed from the SOHO spacecraft go to http://spaceweather.com/, at the bottom click the link for Solar and Heliospheric Observatory, Click on the Sun Now, then LASCO C2.  The event is called a superior conjunction, meaning the Venus is beyond the Sun.  It will be moving from west of the Sun to the east, from the morning side of the Sun to the evening side.  Venus has been in the morning sky since January 11th.  So it is a morning planet for about 9 months and moves to the evening sky for another 9 months.  In a month or so, Venus will appear low in the southwestern sky shortly after sunset.  It will be our super bright evening star next spring.

Times are for the Traverse City/Interlochen area of Michigan.  They may be different for your location.

Addendum

LASCO C2

Venus approaching superior conjunction 10/20/2014 to 10/23/2014. Credit NASA – SOHO LASCO C2.

03/29/2013 – Ephemeris –

March 28, 2013 2 comments

Ephemeris for Thursday, March 28th.  The sun will rise at 7:30.  It’ll be up for 12 hours and 34 minutes, setting at 8:05.   The moon, 1 day past full, will rise at 10:01 this evening.

Venus is passing superior conjunction with the sun today.  Superior means Venus is passing behind, thought not directly behind the Sun.  You can see it only in the images of the SOHO spacecraft.  On the Internet google soho nasa to find the site.   Our last inferior conjunction of Venus was the transit of Venus last June, when Venus crossed the face of the sun.  Mars is about to pass in conjunction with the sun.  All its conjunctions are superior.  For about a month, starting April 4th. the satellites and rovers cannot receive transmissions from the earth due to the sun’s radio noise, so they are put into a passive state.  The Deep Space Network on the earth can pick up their transmissions, though not well during this period due to its greater sensitivity.

Times are for the Traverse City/Interlochen area of Michigan.  They may be different for your location.

Addendum

SOHO LASCO C3 image of the sun

Annotated SOHO LASCO C3 image of the sun, behind the occulting disk with Venus and Mars. Image: ESA, NASA