Jacob & Co. Astronomia Sky

Jacob & Co. Astronomia Sky

Limited Edition of 18 Pieces

“As a sailor heading towards the seas, driven by the celestial vault, I found my star: the Astronomia Sky,” says Jacob Arabo, founder of Jacob & Co. In 2014, Jacob & Co launched the Astronomia Gravitational Triple Axis Tourbillon.

This year, the brand is further extending upon the innovations of the Astronomia with the new Astronomia Sky, adding a never-before-seen complication: a sidereal display in three dimensions combined with an oval sky indicator and a 24-hour day and night display.

Jacob & Co. Astronomia Sky

Technical Specifications:
The case, in 18kt rose gold, measures 47mm x 25mm. It has double AR-coated sapphire crystals and sapphire side apertures.

Movement is the Swiss manual-wind, exclusive to Jacob&Co. caliber JCAM11 with 42 jwels, 21,600 vph and a power reserve of 60 hours. It is done in titanium.

System: Triple Axis Gravitational Tourbillon; Finishing: Plate and Bridges: Hand Angled and Polished, Flank Draw, Circular Graining, Polished Sink; Polished Screws;

Functions are:
SIDEREAL DISPLAY
Celestial Dial covering the internal surface of the inside case, representing the celestial vault through zodiac signs. A full rotation in 1 sidereal year 1. Oval sky indication: Showing the portion of the stars visible from the northern hemisphere, a full rotation in 1 sidereal day 2 above the celestial vault. Month indication: 12 months on sides of the celestial dial.

DAY AND NIGHT INDICATION
Lacquered hand-engraved titanium globe, rotating on 2 axes: 1st Axis: A full rotation on itself in 24 hours; 2nd Axis: Central Axe, travelling across the celestial vault in 20 minutes; Inside a tinted half-domed sapphire, symbolizing night and day.

GRAVITATIONAL TRIPLE AXIS TOURBILLON
Rotating on 3 axes: 1st Axis: in 60 seconds, 2nd Axis: in 5 minutes, 3rd Axis: Central Axe travelling across the celestial vault in 20 minutes.

ORBITAL SECOND INDICATION
Rotating on 2 axes: 1st Axis: in 60 seconds, 2nd Axis: Central Axe, travelling across the celestial vault in 20 minutes.

Open Worked Titanium Wheel and Hand indicating seconds;

HOUR & MINUTE INDICATION
Patented differential system
Rotating on a Central Axe, travelling across the celestial vault in 20 minutes;

CUT RED MOON
Weight: 1 carat; 288 Facets Orange Sapphire Patented Jacob Cut Rotating on 2 axes: 1st Axis in 60 seconds, 2nd Axis: Central Axe, travelling across the celestial vault in 20 minutes.

Dial and Hands: Celestial Dial: Blue Grade 5 Titanium, 18kt gold hand-engraved and applied stars and zodiacal signs; Hour and minute subdial: Titanium, hand angled and polished, lacquered indeces; Differential Gear System; Hand-finished blued hands.

It comes on a black alligator leather strap with an 18kt rose gold folding buckle.

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