Past Meetup

Changed Supermoon II (only if it clears up)

This Meetup is past

15 people went

Location visible to members


Another update:

Come at 20:45 to Slegerslaan corner Louis Gribaumontlaan and/or 22:15 to Cinquantenaire, the place between the museums and the fountain if we have clear sky

Rue de la Loi is cancelled.


Update 10/9: despite the uncertainties of today's cloud coverage -
after yesterdays experience, I've re-checked the calculations.

The moon will align with the axis Rue de la Loi quite late - at 22:58 and already high in the sky at an elevation of 20°. Not really optimal for pictures along the street canyon (which in any case would change from Rue de la Loi to Rue Belliard to 'follow' the lights of the traffic).

I suppose 22:58 is too late?

Shall we cancel this meetup or change the location?

There are surprisingly not many streets in Brussels in the right angle for a good view on the rising moon (ca. 80° azimuth).

One option would be at Slegerslaan / Louis Gribaumontlaan:,+1200+Sint-Lambrechts-Woluwe/50.840453,4.4174099/@50.8424671,4.4200934,17z/data=!4m8!4m7!1m5!1m1!1s0x47c3db599b6b0307:0x253bfacbed30c1e4!2m2!1d4.4233269!2d50.8407782!1m0

At the roundabout Slegerslaan / Louis Gribaumontlaan is only a very small time-window from 20:55 to 21:05 to spot the rising moon at a low angle of 2,1° (can't guarantee for that) which makes it really look big.... but it may not be worth to go there outside this times.

Please communicate your view in the discussion, depending on the reaction the meetup will be re-located or cancelled.


Update: exact location will be anounced after the "Supermoon at Cinquantenaire meetup ("


We will picture the big supermoon Brusselshenge'ish along the axis Rue de la Loi

details and exact time after some calculations ;-)

Brusselshenge'ish from Manhattanhenge

Supermoon From Wikipedia, the free encyclopedia

A supermoon is the coincidence of a full moon ( or a new moon ( with the closest approach the Moon ( makes to the Earth on its elliptical orbit, resulting in the largest apparent size of the lunar disk as seen from Earth. The technical name is the perigee ( ( of the Earth-Moon-Sun system. The term "supermoon" is not astronomical (, but originated in modern astrology ([1] ( The association of the Moon with both oceanic and crustal tides has led to claims that the supermoon phenomenon may be associated with increased risk of events such as earthquakes and volcanic eruptions, but the evidence of such a link is widely held to be unconvincing.[2] (

The most recent occurrence was on August 10, 2014. The next and closest supermoon of 2014 will be on September 9.[3] (