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Astronomia Solar Constellations Planets and Yellow Stone

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The Astronomia is the embodiment of 21st century ultra-high-end watchmaking and a globally recognized symbol of Jacob & Co watchmaking expertise. A world-first both in the boldness of its unprecedented concept and its entirely mechanical construction, the Astronomia has gone beyond impressive horological achievements to becoming an outstanding multidisciplinary engineering accomplishment.

The Astronomia Solar Constellations & Planets takes the celestial idea of the Astronomia timepiece and puts it into wrap speed. It displays the planets of our Solar System as half spheres of semi-precious stones on a starry blue titanium base that turns counterclockwise every ten minutes. Above, the iconic Astronomia vertical movement rotates clockwise every 10 minutes. In addition to its three arms carrying Jacob & Co. exclusive complications, it also features three colored gems, each perfect spheres exhibiting the exclusive 288-facet Jacob Cut®. On top of the movement is a fiery gem featuring the Jacob Cut® that serves as the representation of the Sun.

The Astronomia Solar Planets makes for a beautifully artistic, highly refined and fully mechanical recreation of our solar system.

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The Exclusive caliber of the Astronomia Solar Constellations & Planets stands out from an exquisite range of Astronomia calibers by being the most compact reiteration of the original, allowing for yet smaller case dimensions as well as redesigned proportions. Composed of 447 components, all finished to the highest standards of haute horlogerie, the Astronomia features two rotating platforms. One comprises the three main arms and subsidiary arms of the caliber, while the other serves as their spectacular, rotating backdrop.

The vertical platform of the caliber completes a rotation around the center of the watch in under 10 minutes, while simultaneously driving the second layer in a counterclockwise direction to add further animation and complexity to this unique take on celestial watchmaking.

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In the Astronomia Solar Constellations & Planets, the Sun is represented by a fiery yellow stone featuring the Jacob Cut® with 288-facets.

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The tourbillon was originally invented to provide improved timekeeping performance for a pocket watch. The Astronomia Tourbillon brings this 200-plus-year-old complication to breathtaking levels of modern refinement
and complexity.

The one-minute flying tourbillon of the Astronomia Solar Constellations & Planets features a delicately decorated cage that encapsulates the balance wheel, hairspring, escape wheel and a number of other crucially important components. This openworked, rose gold cage not only features the J&Co logo in its architecture, but is only secured from underneath, allowing for an unobstructed and full view at the ultimate refinement of its detailing and operation. It is a constellation of superbly finished components that, when assembled and fine-tuned expertly, allowing the Astronomia caliber to keep accurate time throughout its 48-hour power reserve.

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The blue titanium base alight with constellations containing rotates counter-clockwise 360 degrees every 10 minutes, carrying seven planets made of cabochon cut precious stones half-spheres: white granite for Mercury, rhodonite for Venus, red jasper for Mars, pietersite for Jupiter, tiger eye for Saturn (18K Rose Gold applique for the rings), blue calcite for Uranus and Lapis Lazuli for Neptune.

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Astronomia Solar Constellations Planets and Yellow Stone Video

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The Astronomia Solar Constellations & Planets case measures 47 millimeters in diameter and 21 millimeters thick between the highest point of its specially curved front sapphire crystal and the lowest point of its case. Its 18K gold case holds a single-piece sapphire crystal window around its periphery, allowing for unhindered viewing of the spectacular caliber and precious stones inside.

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The time display subdial of the Astronomia Solar Constellation & Planets is driven through an infinitesimal differential system that allows it to always remain leveled and hence perfectly legible, even as the movement's four-armed platform performs its continuous, 10-minute orbit.

The titanium hand angled and polished dial has lacquered indexes, while the Jacob & Co. manufactured hands are plated with 18K rose gold.

a gold and blue clock


The Jacob & Co. flying tourbillon, time display, and hand-painted magnesium globe and three 288-facet Jacob Cut stones make one full revolution of the dial in 10 minutes, rotating clockwise

The Sun is represented by a fiery yellow 288-facet Jacob-cut stone

The base dial is made of blue titanium representing a starry sky holding seven half-sphere planets of the solar system that makes one revolution counter-clockwise in 10 minutes

The seven planets are represented by half spheres of semi-precious stones: white granite for Mercury, rhodonite for Venus, red jasper for Mars, pietersite for Jupiter, tiger eye for Saturn (18K Rose Gold applique for the rings), blue calcite for Uranus and Lapis Lazuli for Neptune.

With the upper assembly turning clockwise in 10 minutes and the multi-color sapphire-set base holding the planets turning clockwise in 10 minutes, the Astronomia Solar never looks the same way twice

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Technical Specifications

Item Number: AS300.40.AA.AB.A

Movement: Caliber: Exclusive Manufacture Jacob & Co. Manual Winding JCAM19; Diameter: 34.55mm; Height: 16.50mm (11.70mm excluding top stone); Components: 447; Material: Titanium; Functions: Hours and Minutes; Power Reserve: 48 Hours; Frequency: 28,800 vib/h (4 Hz); Jewels: 43.

System: Vertical Movement with 3 Arms, Full Revolution in 10 min around a Central Axis

• Flying Tourbillon Cage in 60 seconds

• Blue Lacquered Globe Rotating on itself in 60 sec

• Hours and Minutes Dial, Patented Differential Gears System℗ allows to keep the 12/6 o'clock position

Jacob cut® Gem stone (288 facets) on top of the movement. Frame carrying 3 Jacob cut® Gem stones (288 facets). Blued Titanium base with constellations rotates counter-clockwise 360 degrees in 10 minutes, carrying 7 planets made of Cabochon cut Precious Stones Half-Spheres: White Granite for Mercury, Rhodonite for Venus, Red Jasper for Mars, Pietersite for Jupiter, Tiger Eye for Saturn (18K Rose Gold applique for the rings), Blue Calcite for Uranus and Lapis Lazuli for Neptune.

Case: Diameter: 47mm; Height: 21mm; Material: 18K Rose Gold and Sapphire; Case Back: 18K Rose Gold; Case Band: Single-Piece Sapphire Crystal; Bows: Winding and Time-Setting via two 18K Rose Gold bows; Crystal: Unique Domed Sapphire with double Anti-Reflective Treatment; Water resistance: 30m (3atm).

Dial & Hands: Dial: Titanium, Hand Angled and Polished, Lacquered Indexes; Hands: Blued Jacob&Co designed hands.

Strap & Clasp: Strap: Alligator; Clasp: 18K Rose Gold Ardillon buckle

Limited Edition: 9 pieces


If you have any questions, queries or comments, please feel free to get in touch and our team will be delighted to help you.

Contact Us

Flagship Boutique
/ Corporate Office

48 East 57 Street
New York, NY 10022
+1 (212) 719-5887
Jacob & Co

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