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Limited Edition of 28 watches



“Sideralis is an invitation to embark on an interstellar journey – a whole new kind of discovery that’s singularly technical and poetic”. The timepiece in question defies comparison, simply because to date, Sideralis does not have any equivalent anywhere in the world of watchmaking, and is protected by two patent applications.

Sidereal – and staggering
Sideralis is structured around two especially extraordinary tourbillons:

Special feature number one
Both of these tourbillons are oversized, with cages measuring 14.9 mm – half as big again as the average. This is the largest assembly of two tourbillons ever to have existed.

Special feature number two
The two tourbillons are designed to be physically above the movement – above the dial, even. The two raised cages are large as life and wholly visible, revealing balance wheels with beautifully styled screws – and an absolutely incomparable aesthetic appearance.

Special feature number three
The tourbillons rotate in opposite directions. The continuous coming and going, side by side, is not just for stylistic reasons; the counter-rotation provides the motive power required for the star mechanism – the Sideralis complication.
Now, tourbillons move the planets
For the first time ever, a complication is driven by a double tourbillon: a time dial, situated at 12 o’clock, comprising two discs, one atop the other. The top one features a tiny hand-painted picture. This hand-crafted marvel depicts the universe and its constellations of stars and planets, painted one by one on a dark blue sidereal background. The animation completes one counter-clockwise rotation every 60 seconds.

At 12 o’clock on this upper disc there is a circular opening, through which can be glimpsed the three planets painted on the lower disc, seen to be rotating in the opposite direction at the same speed. The feature represents a wholly new conceptual and artistic approach.

Mars, Mercury and the Moon – physically present
Through the opening, the lower disc reveals the planet Mars, the Moon, and Mercury in succession. The inverted double tourbillon, powering an exclusive complication, is an unprecedented innovation, with two patents pending to protect it. The Sideralis caliber is also fully exclusive to Louis Moinet, mounted on a hand-painted aventurine dial that matches the universe depicted on the time disc. Sideralis comes in a 47.4 mm grey gold case – and in a limited edition of just 28 watches.

> More Technical specifications

Technical specifications

Sideralis is an interstellard inverted double tourbillon, powering an exclusive complication : A sideral mechanism.

  • Features and indications

    Double Tourbillon 60-seconds
    Hours & Minutes at 12 o’clock
    Sidereal complication

  • Dial and Hands

    Hour & Minute “Gouttes de Rosée” drew-drop hands
    Hand-painted aventurine dial with genuine dust from Mars, Moon and fragments of the Rosetta Stone (Sahara 99555)
    Hand-painted shooting stars
    Fleur-de-lys applique

  • Movement and Finishing

    Manual double tourbillon movement
    245-part LM46 caliber, fully exclusive and manufactured by Louis Moinet
    Winding: Manual
    Tourbillon cages: 1 rotation/minute
    Oscillations: 21,600 vibrations per hour
    Frequency: 3Hz
    Balance wheel: Glucydur
    Lines: 13¾
    Power reserve: 72 hours
    Jewels: 36
    Diameter: 37.60 mm
    Height: 9.85 mm
    Decoration: Satin-brushed baseplate and bridge flanks, Polished chamfers and countersinks, Sunburst Côtes de Genève motif adorning the bridges, Polished screw heads, Rhodium-plated bridges and baseplate and Polished Louis Moinet logo

  • Case and Strap

    Case: Original Louis Moinet® design comprising 53 different elements
    Material: 18K gold
    Diameter: 47.4 mm
    Thickness: 14.92 mm
    Water resistance: 30 metres
    Case back: Fitted with 6 screws, engraved with individual number and Louis Moinet symbols
    Crystals: Two sapphire crystals with non-reflective coating on both faces
    Distance between lugs: 24 mm
    Strap: Hand-sewn Louisiana alligator leather with alligator lining
    Buckle: 18-carat gold folding clasp with fleur-de-lys motif

Inverted Double Tourbillon
Designed to be physically above the dial, the oversized tourbillons rotate in opposite directions
Sidereal Complication
The complication is driven by the double tourbillon and displays successively The Moon, Mars and Mercury
Neo case
Sideralis comes in a brand new 47.4 mm 18K gold case, with open-work lugs
Micro Paintings
Made from aventurine, the dial is entirely hand-painted and depicts a realistic universe