diff --git a/lib/astronoby/coordinates/ecliptic.rb b/lib/astronoby/coordinates/ecliptic.rb
index f0fb49e..599cf61 100644
--- a/lib/astronoby/coordinates/ecliptic.rb
+++ b/lib/astronoby/coordinates/ecliptic.rb
@@ -10,6 +10,10 @@ def initialize(latitude:, longitude:)
         @longitude = longitude
       end
 
+      def self.zero
+        new(latitude: Angle.zero, longitude: Angle.zero)
+      end
+
       # Source:
       #  Title: Celestial Calculations
       #  Author: J. L. Lawrence
diff --git a/lib/astronoby/reference_frame.rb b/lib/astronoby/reference_frame.rb
index ea627be..a79648c 100644
--- a/lib/astronoby/reference_frame.rb
+++ b/lib/astronoby/reference_frame.rb
@@ -28,6 +28,12 @@ def equatorial
       Coordinates::Equatorial.from_position_vector(@position)
     end
 
+    def ecliptic
+      return Coordinates::Ecliptic.zero if distance.zero?
+
+      equatorial.to_ecliptic(epoch: Epoch::J2000)
+    end
+
     def distance
       return Distance.zero if @position.zero?
 
diff --git a/spec/astronoby/bodies/earth_spec.rb b/spec/astronoby/bodies/earth_spec.rb
index f2d3f2b..560ab76 100644
--- a/spec/astronoby/bodies/earth_spec.rb
+++ b/spec/astronoby/bodies/earth_spec.rb
@@ -58,6 +58,21 @@
         .to eq("+7° 34′ 11.406″")
       # IMCCE:    +7° 34′ 11.407″
       # Skyfield: +7° 34′ 11.4″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("+0° 0′ 32.9716″")
+      # IMCCE:    +0° 0′ 32.971″
+      # Skyfield: +0° 0′ 33.2″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+160° 40′ 55.7988″")
+      # IMCCE:    +160° 40′ 55.794″
+      # Skyfield: +160° 40′ 56.4″
+
+      expect(geometric.distance.au)
+        .to eq(0.9941296922100833)
+      # IMCCE:    0.994129567869
+      # Skyfield: 0.9941296929553649
     end
 
     it "computes the correct velocity" do
@@ -105,6 +120,8 @@
       expect(astrometric.equatorial.right_ascension)
         .to eq(Astronoby::Angle.zero)
       expect(astrometric.equatorial.declination).to eq(Astronoby::Angle.zero)
+      expect(astrometric.ecliptic.latitude).to eq(Astronoby::Angle.zero)
+      expect(astrometric.ecliptic.longitude).to eq(Astronoby::Angle.zero)
       expect(astrometric.distance).to eq(Astronoby::Distance.zero)
     end
 
diff --git a/spec/astronoby/bodies/jupiter_spec.rb b/spec/astronoby/bodies/jupiter_spec.rb
index 4b79e54..a110603 100644
--- a/spec/astronoby/bodies/jupiter_spec.rb
+++ b/spec/astronoby/bodies/jupiter_spec.rb
@@ -58,6 +58,21 @@
         .to eq("+23° 9′ 24.1204″")
       # IMCCE:    +23° 9′ 24.118″
       # Skyfield: +23° 9′ 24.1″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("-0° 16′ 22.9896″")
+      # IMCCE:    -0° 16′ 22.992″
+      # Skyfield: -0° 16′ 11.1″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+88° 24′ 41.3024″")
+      # IMCCE:    +88° 24′ 41.297″
+      # Skyfield: +88° 24′ 55.4″
+
+      expect(geometric.distance.au)
+        .to eq(5.118010310588575)
+      # IMCCE:    5.11801034937
+      # Skyfield: 5.118010311352852
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    +22° 53′ 40.753″
       # Skyfield: +22° 53′ 40.8″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("-0° 14′ 27.7664″")
+      # IMCCE:    -0° 14′ 27.769″
+      # Skyfield: -0° 14′ 15.9″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+81° 1′ 11.959″")
+      # IMCCE:    +81° 1′ 11.962″
+      # Skyfield: +81° 22′ 26.1″
+
       expect(astrometric.distance.au)
         .to eq(5.847692982822113)
       # IMCCE:    5.847693029715
diff --git a/spec/astronoby/bodies/mars_spec.rb b/spec/astronoby/bodies/mars_spec.rb
index a3f7afe..3557aaa 100644
--- a/spec/astronoby/bodies/mars_spec.rb
+++ b/spec/astronoby/bodies/mars_spec.rb
@@ -58,6 +58,21 @@
         .to eq("+13° 22′ 23.046″")
       # IMCCE:    +13° 22′ 23.048″
       # Skyfield: +13° 22′ 23.0″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("+1° 49′ 29.7913″")
+      # IMCCE:    +1° 49′ 29.791″
+      # Skyfield: +1° 49′ 34.9″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+149° 27′ 6.5779″")
+      # IMCCE:    +149° 27′ 6.571″
+      # Skyfield: +149° 27′ 17.0″
+
+      expect(geometric.distance.au)
+        .to eq(1.6665243265178227)
+      # IMCCE:    1.666524219608
+      # Skyfield: 1.66652432695766
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    +24° 3′ 35.868″
       # Skyfield: +24° 3′ 35.9″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("+2° 39′ 41.3343″")
+      # IMCCE:    +2° 39′ 41.334″
+      # Skyfield: +2° 39′ 51.8″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+113° 14′ 47.4513″")
+      # IMCCE:    +113° 14′ 47.455″
+      # Skyfield: +113° 35′ 57.8″
+
       expect(astrometric.distance.au)
         .to eq(1.138989231808293)
       # IMCCE:    1.138989267589
diff --git a/spec/astronoby/bodies/mercury_spec.rb b/spec/astronoby/bodies/mercury_spec.rb
index 1f4fbfd..393595e 100644
--- a/spec/astronoby/bodies/mercury_spec.rb
+++ b/spec/astronoby/bodies/mercury_spec.rb
@@ -58,6 +58,21 @@
         .to eq("-6° 7′ 53.664″")
       # IMCCE:    -6° 7′ 53.680″
       # Skyfield: -6° 7′ 53.7″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("+3° 0′ 54.0574″")
+      # IMCCE:    +3° 0′ 54.055″
+      # Skyfield: +3° 0′ 48.5″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+202° 58′ 41.4354″")
+      # IMCCE:    +202° 58′ 41.473″
+      # Skyfield: +202° 58′ 39.5″
+
+      expect(geometric.distance.au)
+        .to eq(0.4274945347661314)
+      # IMCCE:    0.427494398892
+      # Skyfield: 0.4274945451749377
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    -21° 54′ 45.557″
       # Skyfield: -21° 54′ 45.6″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("+1° 7′ 0.4406″")
+      # IMCCE:    +1° 7′ 0.440″
+      # Skyfield: +1° 6′ 48.8″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+259° 31′ 33.854″")
+      # IMCCE:    +259° 31′ 33.864″
+      # Skyfield: +259° 52′ 31.4″
+
       expect(astrometric.distance.au)
         .to eq(1.1479011885933859)
       # IMCCE:    1.147901225109
diff --git a/spec/astronoby/bodies/neptune_spec.rb b/spec/astronoby/bodies/neptune_spec.rb
index 4c62c3d..bada9ee 100644
--- a/spec/astronoby/bodies/neptune_spec.rb
+++ b/spec/astronoby/bodies/neptune_spec.rb
@@ -58,6 +58,21 @@
         .to eq("-1° 11′ 21.2403″")
       # IMCCE:    -1° 11′ 21.197″
       # Skyfield: -1° 11′ 21.2″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("-1° 19′ 17.0443″")
+      # IMCCE:    -1° 19′ 17.013″
+      # Skyfield: -1° 19′ 16.0″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+0° 3′ 29.1763″")
+      # IMCCE:    +0° 3′ 29.214″
+      # Skyfield: +0° 24′ 59.8″
+
+      expect(geometric.distance.au)
+        .to eq(29.884550201759172)
+      # IMCCE:    29.884551127591
+      # Skyfield: 29.88455020171849
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    -0° 35′ 37.211″
       # Skyfield: -0° 35′ 37.3″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("-1° 20′ 58.8551″")
+      # IMCCE:    -1° 20′ 58.823″
+      # Skyfield: -1° 20′ 57.5″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+1° 37′ 15.5232″")
+      # IMCCE:    +1° 37′ 15.560″
+      # Skyfield: +1° 58′ 46.1″
+
       expect(astrometric.distance.au)
         .to eq(29.266429831403105)
       # IMCCE:    29.26643067546
diff --git a/spec/astronoby/bodies/saturn_spec.rb b/spec/astronoby/bodies/saturn_spec.rb
index f741670..7d5d392 100644
--- a/spec/astronoby/bodies/saturn_spec.rb
+++ b/spec/astronoby/bodies/saturn_spec.rb
@@ -58,6 +58,21 @@
         .to eq("-4° 13′ 34.4575″")
       # IMCCE:    -4° 13′ 34.458″
       # Skyfield: -4° 13′ 34.5″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("-2° 10′ 18.0315″")
+      # IMCCE:    -2° 10′ 18.032″
+      # Skyfield: -2° 10′ 18.1″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+354° 22′ 47.1815″")
+      # IMCCE:    +354° 22′ 47.182″
+      # Skyfield: +354° 44′ 7.3″
+
+      expect(geometric.distance.au)
+        .to eq(9.580357829890923)
+      # IMCCE:    9.580357970998
+      # Skyfield: 9.580357829243903
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    -1° 52′ 50.722″
       # Skyfield: -1° 52′ 50.7″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("-2° 6′ 26.3397″")
+      # IMCCE:    -2° 6′ 26.340″
+      # Skyfield: -2° 6′ 25.3″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+0° 7′ 56.1071″")
+      # IMCCE:    +0° 7′ 56.108″
+      # Skyfield: +0° 29′ 16.2″
+
       expect(astrometric.distance.au)
         .to eq(9.878564650795877)
       # IMCCE:    9.878564573683
diff --git a/spec/astronoby/bodies/uranus_spec.rb b/spec/astronoby/bodies/uranus_spec.rb
index 9f5720f..a770e23 100644
--- a/spec/astronoby/bodies/uranus_spec.rb
+++ b/spec/astronoby/bodies/uranus_spec.rb
@@ -58,6 +58,21 @@
         .to eq("+19° 22′ 35.4493″")
       # IMCCE:    +19° 22′ 35.421″
       # Skyfield: +19° 22′ 35.4″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("-0° 13′ 11.9158″")
+      # IMCCE:    -0° 13′ 11.922″
+      # Skyfield: -0° 13′ 1.3″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+57° 27′ 4.2182″")
+      # IMCCE:    +57° 27′ 4.118″
+      # Skyfield: +57° 48′ 29.4″
+
+      expect(geometric.distance.au)
+        .to eq(19.515391974096183)
+      # IMCCE:    19.51539553769
+      # Skyfield: 19.51539197373322
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    +19° 48′ 18.795″
       # Skyfield: +19° 48′ 18.8″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("-0° 12′ 43.8064″")
+      # IMCCE:    -0° 12′ 43.812″
+      # Skyfield: -0° 12′ 33.0″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+59° 21′ 17.3489″")
+      # IMCCE:    +59° 21′ 17.253″
+      # Skyfield: +59° 42′ 42.6″
+
       expect(astrometric.distance.au)
         .to eq(20.293374076651755)
       # IMCCE:    20.293377161363
diff --git a/spec/astronoby/bodies/venus_spec.rb b/spec/astronoby/bodies/venus_spec.rb
index 263730f..1e77fda 100644
--- a/spec/astronoby/bodies/venus_spec.rb
+++ b/spec/astronoby/bodies/venus_spec.rb
@@ -58,6 +58,21 @@
         .to eq("+24° 21′ 26.4794″")
       # IMCCE:    +24° 21′ 26.481″
       # Skyfield: +24° 21′ 26.5″
+
+      expect(geometric.ecliptic.latitude.str(:dms))
+        .to eq("+1° 25′ 43.096″")
+      # IMCCE:    +1° 25′ 43.095″
+      # Skyfield: +1° 25′ 54.4″
+
+      expect(geometric.ecliptic.longitude.str(:dms))
+        .to eq("+101° 35′ 6.7601″")
+      # IMCCE:    +101° 35′ 6.733″
+      # Skyfield: +101° 56′ 10.0″
+
+      expect(geometric.distance.au)
+        .to eq(0.7152904564103618)
+      # IMCCE:    0.715290459923
+      # Skyfield: 0.7152904566396294
     end
 
     it "computes the correct velocity" do
@@ -112,6 +127,16 @@
       # IMCCE:    +0° 37′ 33.706″
       # Skyfield: +0° 37′ 33.7″
 
+      expect(astrometric.ecliptic.latitude.str(:dms))
+        .to eq("+1° 56′ 23.8202″")
+      # IMCCE:    +1° 56′ 23.821″
+      # Skyfield: +1° 56′ 24.3″
+
+      expect(astrometric.ecliptic.longitude.str(:dms))
+        .to eq("+357° 5′ 49.9018″")
+      # IMCCE:    +357° 5′ 49.909″
+      # Skyfield: +357° 26′ 52.6″
+
       expect(astrometric.distance.au)
         .to eq(0.5226080600832164)
       # IMCCE:    0.522608040526
diff --git a/spec/astronoby/coordinates/ecliptic_spec.rb b/spec/astronoby/coordinates/ecliptic_spec.rb
index 3a3440c..558aeb3 100644
--- a/spec/astronoby/coordinates/ecliptic_spec.rb
+++ b/spec/astronoby/coordinates/ecliptic_spec.rb
@@ -1,6 +1,15 @@
 # frozen_string_literal: true
 
 RSpec.describe Astronoby::Coordinates::Ecliptic do
+  describe "::zero" do
+    it "returns a new instance with zero angles" do
+      coordinates = described_class.zero
+
+      expect(coordinates.latitude).to eq(Astronoby::Angle.zero)
+      expect(coordinates.longitude).to eq(Astronoby::Angle.zero)
+    end
+  end
+
   describe "#to_true_equatorial" do
     # Source:
     #  Title: Celestial Calculations