Thursday evening February 22nd the 7-day old first quarter Moon will be 8-9o from the open star cluster the Pleiades, and about 7o from the open star cluster the Hyades. With my 10×50 binoculars the two star clusters are just out of the field of view, but become visible with a slight nudge of my head!
According to the pseudoscience of astrology the Sun enters the constellation of Pisces the Fishes on Sunday February 18th. In fact the actual position of the Sun is still within the boundary of the constellation of Aquarius the Water Bearer, as this graphic shows. The Sun had just entered Aquarius 2 days ago.
Saturday February 17th the innermost planet Mercury reaches superior conjunction – on the opposite side of the Sun from the Earth. For those that are curious, Mercury at superior conjunction is approximately 1.384 AU (128,650,837 miles; 207,043,453 km) from the Earth – the combined distance of the Earth to Sun distance plus the radius of Mercury’s orbit.
Mercury is not visible while in conjunction with the Sun but within the next week or so Mercury will reappear on the east side of the Sun and start becoming visible over the western horizon at sunset.
Friday February 16th the Sun in its apparent eastward motion along the ecliptic, moves out of the constellation Capricornus the Sea Goat and into the constellation of Aquarius the Water Bearer. This is the true or actual position of the Sun as opposed to the pseudoscience of astrology which usually has the astrological Sun one constellation ahead or east from the Astronomical Sun’s position, which will be Sunday February 18th when the sun is not in Pisces according to astrology.
Wednesday February 14th the thin waning crescent Moon will be crossing the plane of the ecliptic moving south. This is known as the descending node, one of two intersections the Moon’s orbital path (dark green line) has with the ecliptic.
On the day of the node crossing the 28-day old waning crescent Moon will be over the eastern horizon about an hour before the Sun rises. The Moon will reach new phase approximately 24 hours after this node crossing.
Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to go to bobs-spaces.
Tuesday January 30th Mars and Uranus will reached their respective orbital positions that have them 180o apart. Mars will be located at approximately 207.6o and Uranus at approximately 27.6o of heliocentric longitude. This called heliocentric opposition.
Interestingly at their last heliocentric opposition, February 26th 2016, Mars was located at approximately 200.0o and Uranus at approximately 20.0o of heliocentric longitude.
Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to return to bobs-spaces.