Manastro Journal for May
Unfortunately with the country still in lockdown, the Godlee
Observatory is still closed for the forseeable future. Why not join us instead for a 'Zoom' webchat, most Thursday evenings. See
Facebook for details.
In the Sky for the next few weeks:-
1st Quarter on the 19th
Full Moon on 26th
3rd Quarter on the 3rd
New Moon on 11th
On the 11th the new moon will be a 'micro moon', that is it
will be at apogee (furthest orbital path from Earth) - not that you could
see it anyway!
On the 26th the full moon will be a 'super full moon', that is it
will be at perigee (nearest approach to Earth) on the same night there will
also be a total lunar eclipse between 10:45 and 13:52 BST (totality between
12:12 and 12:26) but this will not be visible from Manchester.
Planet(s) of the month: Mercury
Diameter: 4879 km 0.3825 Earths
Mass: 0.05527 Earths
Density: 5.45 g/cc (water=1)
Gravity: 0.378 G
Rotation Period: 58.65 days 58d 15h 30m Rotation Period: 1.03 days = 1d 00h 37m 23s
The planets continue to put on a poor show this month,
with Jupiter & Saturn low in the morning sky, Venus a thin crescent & Mars
struggliong in the evening twilight. Mercury continues to be the best
option, siutated near the Pleiades on 3rd May and situated only 1 degess
from Venus on the 25th May.
Mercury is the smallest and innermost planet in the Solar System. Its orbit around the Sun takes only 87.97 days, the shortest of all the planets in the Solar System. It is named after the Roman deity Mercury, the messenger of the gods.
Constellation of the Month: Hercules (shown 15th
Hercules constellation is located in the northern sky. It was named after Hercules, the Roman version of the Greek hero Heracles.
Heracles, in turn, was often associated with the Sumerian hero Gilgamesh, and the constellation itself has a long history, dating back to Sumerian times
Hercules is the fifth largest constellation in the sky, but has no first magnitude stars. In traditional depictions, the star Ras Algethi (Alpha Herculis) represents Hercules’ head and a prominent asterism, the Keystone, marks his torso, as he stands victoriously on Draco’s head.
In mythology, the constellation Hercules is usually associated with the penultimate labour of Heracles, which involved killing the dragon Ladon, who guarded the garden of the Hesperides. The dragon is represented by the constellation Draco. Hercules constellation was first catalogued by the Greek astronomer Ptolemy in the 2nd century.
Notable deep sky objects in Hercules include the Great Globular Cluster (Messier 13), the globular cluster Messier 92, the planetary nebulae Abell 39 and NGC 6210, the Hercules Cluster of galaxies, and the galaxy cluster Abell 2199.
M13 © Mike Oakes
M92 © Mike Oates
η-Aquariids. Apr 19 - May 28 (Peak May 05), ZHR 40
η-Lyrids. May 03 - May 14 (Peak May 08), ZHR 3
MAS Society & MAS Facebook members' recent images
Here is a selection of some of the recent images from our members,
ther are far mor excelent pictures on our Facebook page & in the images section
of this website, check them out.
Leo Triplet © Steve Healey - 09/04/21
M66 © Bob Stuart - 02/04/21
M106 © Rikesh Patel - 04/04/21
Markarians Chain © Martyn Jones - 07/04/21
Nove V140sCas © Phil Swift - 05/04/21
M51 © Alan Griffiths - 11/04/21