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Astronomical Observatory Photos of 2011

Below are the major astronomical events of 2011.

The seasons of the Earth
(data from the U.S. Naval Observatory)
As described by the first law of Kepler, the Earth moves in an elliptical orbit (slightly eccentric) di cui il Sole occupa uno dei due fuochi. Questo comporta che il nostro pianeta non è sempre alla stessa distanza dal Sole.
Perielio (punto più vicino al Sole): 3 gennaio alle ore 19 (TU)
Afelio (punto più lontano dal Sole): 4 luglio alle ore 15 (TU)
Equinozio di Primavera : 20 marzo alle ore 23e21 (TU)
Solstizio d'Estate : 21 giugno alle ore 17e16 (TU)
Equinozio d'Autunno : 23 settembre alle ore 09e05 (TU)
Solstizio d'Inverno : 22 dicembre alle ore 05e30 (TU)

Eclissi
(dati the U.S. Naval Observatory)
in 2011 will be six eclipses are visible from the earth's surface 4 of the Sun and Moon 2 (remember that the most of the eclipses in one year may be 7): January 4
: partial eclipse of the Sun , visible from our resort
http://eclipse.gsfc.nasa.gov/OH/OHfigures/OH2011-Fig01.pdf
June 1: Partial eclipse of the sun, not visible from our resort
http:/ / eclipse.gsfc.nasa.gov/OH/OHfigures/OH2011-Fig02.pdf
June 15: total eclipse of the Moon, visible from our resort
http://eclipse.gsfc.nasa.gov/OH/ OHfigures/OH2011-Fig03.pdf
July 1: Partial eclipse of the sun, not visible from our resort
http://eclipse.gsfc.nasa.gov/OH/OHfigures/OH2011-Fig04.pdf
November 25 : partial eclipse Sun is not visible from our resort
http://eclipse.gsfc.nasa.gov/OH/OHfigures/OH2011-Fig05.pdf
December 10, total eclipse of the moon, just visible in the final phase of the penumbra by Our location
http://eclipse.gsfc.nasa.gov/OH/OHfigures/OH2011-Fig06.pdf

major meteor showers
(from Sky & Telescope)
January 3 to 4 : Quadrantids (radiant Boote-Dragon) with a frequency over 45 hour
April 21 to 22: Lyrids * (radiant in Lyra) to 16-30 with frequency = ' May 6 hours
: Eta Aquarids (radiant in Aquarius) with frequency = 20-40 per hour
July 28 to 29: Delta Aquarids * (radiant in Aquarius) with frequency = 16 - 30 per hour
August 12 to 13: * Perseids (radiant in Perseus) with a frequency over 45 per hour =
October 8 : Draconid * (radiant in Draco) with frequency = 20 to ' now and peaks up to 100
October 21 to 22: Orionids (radiant in Orion) with frequency = 16-30 per hour
November 17 to 18: * Leonids (radiant in Leo) with frequency = 31-45 December 13 to 14 hour
: Geminids * (radiant in Gemini) with a frequency over 45 per hour =
As you can see from the list, four of the seven major swarms (those marked with the 'asterisk) are disturbed by the presence of the Moon.

inner planet at greatest elongation
The greatest elongation east (with the planet visible just after sunset to the west) or maximum elongation west (with the planet visible before sunrise to the east) are the configurations that allow for better visibility of the inner planets.
Mercury: Jan. 9 (W), March 23 (East), May 7 (W), July 20 (East), September 3 (W), Nov. 14 (East), December 23 (west).
Venus : January 8 (west).

outer planets in opposition
When the outer planets are in opposition, rise at sunset and dusk to dawn, so they are visible all night, reach their maximum brightness, being at its closest relative from the planet Earth.
April 4 : Saturn, visible in the constellation Virgo at magnitude +0.56;
August 23 : Neptune, which is located in the constellation Aquarius at magnitude +7.8;
September 26 : Uranus, which is located in the constellation Aquarius at magnitude +5.7;
October 29 : Jupiter, visible in the constellation of Aries at magnitude -2.9.
So Saturn will be easily visible in the spring, while Jupiter will show its best in autumn.