diff --git a/web/static/js/swapp.js b/web/static/js/swapp.js
index 0adf8ae..1ba8270 100644
--- a/web/static/js/swapp.js
+++ b/web/static/js/swapp.js
@@ -36,18 +36,15 @@
       this.configuration['parameters'].forEach(function(p){
         return this$.parameters[p['id']] = p;
       });
+      this.orbiter = null;
       this.timeSeries = [];
     }
     SpaceWeather.prototype.init = function(){
       "This is called by the inline bootstrap javascript code.\nThis ain't in the constructor because it might return a Promise later on.\n(for the loader, for example)";
       var started_at, stopped_at, this$ = this;
-      this.orbits = new Orbits(this.configuration.orbits_container, this.configuration);
-      this.started_at = moment().subtract(1, 'years').hours(0).minutes(0).seconds(0);
-      this.stopped_at = moment().add(7, 'days').hours(0).minutes(0).seconds(0);
-      started_at = this.started_at.format(API_TIME_FORMAT);
-      stopped_at = this.stopped_at.format(API_TIME_FORMAT);
-      console.info("Setting time interval from " + started_at + " to " + stopped_at + "…");
-      this.setStartAndStop(this.started_at, this.stopped_at);
+      started_at = moment().subtract(1, 'years').hours(0).minutes(0).seconds(0);
+      stopped_at = moment().add(7, 'days').hours(0).minutes(0).seconds(0);
+      this.setStartAndStop(started_at, stopped_at);
       this.loadAndCreatePlots(started_at, stopped_at);
       return window.addEventListener('resize', function(){
         return this$.resize();
@@ -142,6 +139,9 @@
       "started_at: moment(.js) object\nstopped_at: moment(.js) object";
       var active_targets, res$, k, this$ = this;
       this.showLoader();
+      this.started_at = started_at;
+      this.stopped_at = stopped_at;
+      this.orbits = new Orbits(this.configuration.orbits_container, this.configuration);
       started_at = started_at.format(API_TIME_FORMAT);
       stopped_at = stopped_at.format(API_TIME_FORMAT);
       res$ = [];
@@ -258,11 +258,9 @@
       return [this.started_at, this.stopped_at];
     };
     SpaceWeather.prototype.resizeDomain = function(started_at, stopped_at){
-      var tmp, formatted_started_at, formatted_stopped_at;
+      var ref$, formatted_started_at, formatted_stopped_at;
       if (stopped_at < started_at) {
-        tmp = started_at;
-        started_at = stopped_at;
-        stopped_at = started_at;
+        ref$ = [stopped_at, started_at], started_at = ref$[0], stopped_at = ref$[1];
       }
       if (started_at === stopped_at) {
         console.warn("Please provide distinct start and stop dates.");
@@ -301,6 +299,7 @@
       return this;
     };
     SpaceWeather.prototype.setStartAndStop = function(started_at, stopped_at){
+      console.info("Setting time interval from " + started_at + " to " + stopped_at + "…");
       this.current_started_at = started_at;
       this.current_stopped_at = stopped_at;
       $("#started_at").val(started_at.format(INPUT_TIME_FORMAT));
@@ -561,6 +560,7 @@
       };
       this.data = {};
       this.orbiters = {};
+      this.orbitersElements = {};
       this.extremum = 1;
       this.xScale = d3.scaleLinear().domain([-1 * this.extremum, this.extremum]);
       this.yScale = d3.scaleLinear().domain([-1 * this.extremum, this.extremum]);
@@ -587,7 +587,6 @@
       $(this.svg.node()).hide();
       return this.resize();
     };
-    Orbits.prototype.orbitersElements = {};
     Orbits.prototype.initOrbiter = function(slug, config, data){
       var orbit_ellipse, orbiter, orbit_line, orbit_section, this$ = this;
       console.info("Initializing orbit of " + config.name + "…");
diff --git a/web/static/js/swapp.ls b/web/static/js/swapp.ls
index 80b6c42..9ff96f3 100644
--- a/web/static/js/swapp.ls
+++ b/web/static/js/swapp.ls
@@ -63,7 +63,8 @@ https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
     @configuration['parameters'].forEach((p) ~>
         @parameters[p['id']] = p
     )
-    @timeSeries = []
+    @orbiter = null   # our Orbiter
+    @timeSeries = []  # a List of TimeSeries objects
 
   init: ->
     """
@@ -71,15 +72,11 @@ https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
     This ain't in the constructor because it might return a Promise later on.
     (for the loader, for example)
     """
-    @orbits = new Orbits(@configuration.orbits_container, @configuration)
     # Default time interval is from one year ago to one week ahead.
     # We set the h/m/s to zero to benefit from a daily cache.
-    @started_at = moment().subtract(1, 'years').hours(0).minutes(0).seconds(0)
-    @stopped_at = moment().add(7, 'days').hours(0).minutes(0).seconds(0)
-    started_at = @started_at.format(API_TIME_FORMAT)
-    stopped_at = @stopped_at.format(API_TIME_FORMAT)
-    console.info "Setting time interval from #{started_at} to #{stopped_at}…"
-    @setStartAndStop(@started_at, @stopped_at)
+    started_at = moment().subtract(1, 'years').hours(0).minutes(0).seconds(0)
+    stopped_at = moment().add(7, 'days').hours(0).minutes(0).seconds(0)
+    @setStartAndStop(started_at, stopped_at)
     @loadAndCreatePlots(started_at, stopped_at)
 
     window.addEventListener 'resize', ~> @resize()
@@ -154,6 +151,9 @@ https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
     stopped_at: moment(.js) object
     """
     @showLoader()
+    @started_at = started_at
+    @stopped_at = stopped_at
+    @orbits = new Orbits(@configuration.orbits_container, @configuration)
     started_at = started_at.format(API_TIME_FORMAT)
     stopped_at = stopped_at.format(API_TIME_FORMAT)
     active_targets = [@targets[k] for k of @targets when @targets[k].active]
@@ -223,10 +223,7 @@ https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
 
   resizeDomain: (started_at, stopped_at) ->
     if stopped_at < started_at
-      tmp = started_at
-      started_at = stopped_at
-      stopped_at = started_at
-
+      [started_at, stopped_at] = [stopped_at, started_at]
     if started_at == stopped_at
       console.warn "Please provide distinct start and stop dates."
       return
@@ -259,6 +256,7 @@ https://gitlab.irap.omp.eu/CDPP/SPACEWEATHERONLINE
     this
 
   setStartAndStop: (started_at, stopped_at) ->
+    console.info "Setting time interval from #{started_at} to #{stopped_at}…"
     @current_started_at = started_at
     @current_stopped_at = stopped_at
     $("\#started_at").val(started_at.format(INPUT_TIME_FORMAT))
@@ -574,6 +572,7 @@ export class Orbits
 
     @data = {}  # slug => HCI array
     @orbiters = {}  # slug => config
+    @orbitersElements = {}
     @extremum = 1
     @xScale = d3.scaleLinear().domain([-1 * @extremum, @extremum])
     @yScale = d3.scaleLinear().domain([-1 * @extremum, @extremum])
@@ -613,7 +612,6 @@ export class Orbits
     $(@svg.node()).hide();  # we'll show it later when there'll be data
     @resize()
 
-  orbitersElements: {}
   initOrbiter: (slug, config, data) ->
     console.info "Initializing orbit of #{config.name}…"
     if slug of @orbitersElements then throw new Error("Second init of #{slug}")
--
libgit2 0.21.2