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Tuesday, November 15, 2016

Super Moons

People may be asking you about the forthcoming Supermoon (on 14 November 2016) so I have compiled the following AstroAlert. this one in November is extra special (in some folk’s estimation). Read on From: Francis Podmore AstroAlert 12 November 2016 SUPERMOONS, and Micro Moons Have you heard? “Biggest Supermoon since 1948 to occur in November 2016”. What’s going on? And when is the next one going to happen? The motion of the Moon around the Earth is extraordinarily complicated. The orbit is elliptical (i.e. a slightly squashed circle), it is tilted at about 5° to the plane of the Earth’s orbit around the Sun, and the orbit itself rotates slowly once every 19 years. In consequence the distance of the Moon from the Earth varies significantly so that when a Full Moon happens to coincide (almost) with the Moon at perigee (the minimum distance from Earth) the Moon will look larger in the sky than normal because it is closer (a Supermoon), whereas when the Full Moon occurs when the Moon is furthest from the Earth (at or near apogee) we get so-called Micro Moon, when the Moon is at its smallest. Some numbers: the average Earth-Moon centre-to-centre distance is 384,400 km, the average perigee distance is 363,296 km, the average apogee distance is 405,504 km. The Moon can therefore be 384,400/363,296 = 1.058 or about 6% closer than the average, making the Moon’s angular diameter 6% larger and thus 12% brighter since the illuminated area is greater. The reduction at apogee is 405,504/384,400 = 1.055 or 5.5% further away so that the Moon’s is 5.5% smaller and 11% dimmer. But the perigee distance itself varies, quite a lot, as does the apogee distance, due the variation in the gravitational pull of the Sun on the Moon, and the varying Sun – Earth distance. In the 5000 year period from -1999 to 3000 AD the perigee distance varies from 356,355 to 370,399 km. The biggest Supermoon would be 8% larger and 16% brighter than the average. The apogee distance ranged from 404,042 to 406,725 km. On 14 November 2016 Full Moon occurs at 15:52 and when it rises at 18:10 it will be 356,512 km away, which is the closest it has been since 26 January 1948. That means it will be 8% larger and 12% brighter than normal. To see the size comparison, take a 25 cm diameter dinner plate and put it next to, or behind a plate 23 cm across. The next time such a significant Supermoon will occur is 25 November 2034. Where can it be seen? You don’t have to be in any special place, or look at any particular time. Anyone who can see the Moon will see it larger than average, all night long, because a Full Moon rises at sunset, is near overhead at midnight, and sets as the Sun comes up. And a day or two either side of Full Moon it will be only very slightly less than the Supermoon size. There is no ‘official’ definition of Supermoon or Micro Moon. The word was coined in 1979 by astrologer (!) Richard Nolle. He defined it as “a New or Full Moon occurring at or near (within 90%) of its closest approach to Earth”. [But you cannot see a Supermoon at New Moon because it entirely backlit by the Sun!] A better definition is: “ a New or Full Moon which occurs when the Moon is less than 360 000 km from the centre of the Earth”. Consequently the Full Moons of 16 October and 14 December this year are also Supermoons as the distances are 357 860 and 358 483 km respectively, but these are not quite as close as the 14 November event. The next Supermoons are 3 December 2017 and 2 January 2018. These Supermoon events may inspire you to go and admire the glory of our celestial companion. But whether we see any of these depends on the clouds....... Comparing these perigee and apogee distances gives a 14% increase in the Moon’s size, and consequently a 30% increase in brightness from Micro Moon to Supermoon. (Photo from Astropixels) The variation of Full Moon distance in kilometres 2004 – 2023. The red dots show the Full Moon dates. Apogee at the top, perigee at the bottom. Strictly the Supermoons are those occurring at the lowest points of the graph with the Micro Moons at the highest points but the events below the blue line are when the Moon could be described as a Supermoon. (Graph from Are there any physical effects on the Earth? Some people have blamed Supermoons for barious natural disasters but this is not widely accepted. The tides of the sea around Supermoon dates will be larger than usual because tides are caused by the gravitational pull of the Moon and Sun. The actual distance between you and the Moon depends where you are on the planet – latitude, longitude and altitude (you may be up a mountain). is a truly amazing website to give you distance and position information and graphics, immediately. Other useful Supermoon websites are: Lists all the perigee and apogee distances and times from 2001 to 2100, but not linked to the cycle of New and Full Moons. The title is “Inconstant Moon”. Dr Giesen’s website has many other astronomical calculations and links. Many people have noticed the Moon (and Sun) looking larger when near the horizon. This is called the Moon Illusion – see links on this webpage. A comprenhensive article. ================================================================================== Francis Podmore (


Readers comments on Water As usual lots of talk, at which our councillors and politicians are world champions, but NOTHING is being done about water. Ministers have given permission to build on protected wetlands and everybody complains about verges being watered, but there is no action. At a recent public meeting a COH councillor stated that there ARE laws which are supposed to prevent watering of lawns and verges, but there is no enforcement. Watering of lawns is a far, far greater waste than just watering verges. Wake up Zimbabweans. We live in Africa and the grass goes brown in winter and green in the rainy season. It is ridiculous to want to have a green lawn in our winter. Boreholes are not an inexhaustible supply of water and DO NOT fill up again in each rainy season. Only 1.5% to 4% of the water which falls on the earth actually replenishes underground water systems. Some of the water now being extracted is hundreds and even thousands of years old. Much more publicity needs to be given to water harvesting. It is the ONLY way we will survive. ……………. As the proud owner of a vast brown lawn, I love it when the rain starts – you really only get that unique ‘first rain’ smell if it is falling on truly dry earth! From the first rains onwards we have the privilege of watching the garden burst into life and colour. It is well worth considering whether you *really* need a green lawn all year round – it is wonderful to watch the garden change with the seasons! As for watering verges I wholeheartedly agree. Rather than having water meter readers coming month after month to take readings that never change, what about monitoring those who are so careless with this precious and ultimately finite resource. I too despair not only at the unnecessary green verges, but those who choose to water in the mid-day heat when most of the water will evaporate before it even sinks into the ground! And worse those who leave automatic sprinklers to water the tar or the garden wall... ……………… Totally agree with “C” about the stupidity and the irresponsibility of watering the verges – irrespective whether it is from your borehole or not. Think about what is happening to the water table below your feet! I have always said I can cope without electricity because I can “make” electricity but if you have no water you cannot “make” it. We ALL need to take responsibility for our daily actions. Petra ……………..


Chris Bate: Passed away on 7 Nov. There will be a memorial service, open to all, at Borrowdale Brooke on 18 Nov at 1400 for 1430. Please can all friends and family join us then. Dress smart casual. Cash bar. Frankie Herd ( formally Ellman-Brown nee Scott ) passed away in Sydney Australia on Sunday 13th November 2016 after a long battle with cancer. Beloved mother of Lindsay and Andrew. May her soul rest in peace. Mark Chance: Death and Funeral Notice: There will be a wake held for Mark Chance, (who passed away on Tuesday the 8th of November), at the Dandaro Centre, on Wednesday the 16th of November from 12.30 pm. Please can all friends and family join us for refreshments and a light lunch, to remember Mark and celebrate his life. Youngleson, Voy – It is with great sadness we announce the passing of our beloved mother, grandmother & great grandmother. At peace now with her darling Sandy. A memorial service will be held at Highlands Presbyterian Church on Tuesday 15th November at 2:30pm. Sandi and Gray Harnden, Frank and Patsy and Pam Hartnack.

Monday, September 12, 2016

death Notices

Death Notice : Neil Snatt , beloved Father and Grandad of Barbara and Owen , Zoe and Adriaan , Amy, Ben, Rob and Christie , Diane and Jono , passed away peacefully on Wednesday 17th August in Durban. Memorial Service: A memorial for the late Air Marshall MJ (Mick) McLaren will be held at Royal Harare Golf Club in the Main Lounge this Thursday the 18th of August at 5.30 - 6.30 pm. All those wishing to pay their respects are welcome to attend. Snacks will be provided, cash bar. Death Notice: LESLEY FAULKNER – ex Guruve and Norton. It is with great sadness that we announce the death of Lesley, beloved wife of Robin, mother of Tony and Jenny, grandmother to Belinda, Lauren, Sarah and Michael and great grandmother to Tyler. There will be a gathering at Bill and Jenny’s house at 5 Wiltshire Road, Greendale, Harare on Friday 26th August 2016 from 12 noon . Please join us and please come in casual dress.

Patsy Johnson

Death Notice: We are so sad on the passing of our much loved wife, Mum, granny and great granny Patsy Johnson. There will be a Memorial Service to remember her wonderful life at the Highlands Presbyterian Church at 2.30 pm on Tuesday 23 August 2016. There will be tea afterwards and we ask the ladies to please bring a plate of eats. You may contact us on 0772-264-194 and 0772-249-424

Eileen Fleet

Memorial Notice: Well respected DTZ member and much loved dance teacher, Eileen Fleet passed away on Thursday 25th August 2016. Eileen was National Ballet's prima ballerina for many years and her grace, serene nature and passion touched so many of us in the dancing community. Her legacy lives on, inspiring us to seek the beauty in all we do. A Memorial Service for Eileen will be held at Celebration Centre at 2:30pm on Friday 2nd September 2016.

Death Notices

Death Notice: Keeling, John Desmond - Passed away after a long struggle with cancer at his home in Basingstoke on 21st August 2016 in his 83rd year. Loving husband of 37 years of Monica (nee Winther). Beloved father of Caryn, Ross, Douglas, Christian, Sally and Amy. Proud grandfather of Hazel, Dennis, Kristopher, Jessica, Selina, Nils and Svenja. A funeral service will be performed in Basingstoke UK on 1st September 2016 at 10:15am. Condolences may be sent by e-mail to Death Notice: Estelle Pardy passed away 30th August 2016. Our dearest Mother and Grandmother now at home with The Lord after her brave battle against cancer. Mother to Adam, Fern and Darlene. Grandmother to Scott, Keira, Natasha and Nicole. Condolences may be sent to or +263772105249. Memorial Notice to follow.