- Movement
- Hand-wound
- Size
- 47 mm
Overview
A vertical platform that turns every 20 minutes
The Jacob & Co. Astronomia Sky, reference AT110.22.AA.AA.A, in a blue titanium case, 47 mm across and 25 mm high. It has a blue grade 5 titanium celestial dial with a titanium hour and minute subdial, on a blue alligator leather strap with a blue titanium deployant clasp. This version is limited to 6 pieces.
The hour and minute subdial is titanium, hand-angled and polished, with lacquered indexes, and its differential gear system keeps it upright as the platform turns. The case has sapphire apertures on its sides.
In 2014 Jacob Arabo turned his interest in space into the Astronomia concept, a planetary system modelled at wrist scale. Astronomia Sky takes the idea further. A vertical platform rises from the back plate and turns on its axis in 20 minutes, and its motion drives the movement’s functions. An Earth globe on the platform is half covered, so it shows whether sunlight reaches a part of the planet, and it turns in 24 hours as a day and night indicator.
Hand-wound calibre JCAM11 has 395 components and a 60-hour power reserve. The tourbillon hangs from one satellite arm in an openworked carriage that turns on two axes, in 60 seconds and in 5 minutes. The platform’s 20-minute rotation adds the third. On another arm a differential system turns the hour and minute dial against the platform at the same speed, so it stays upright. The back plate turns once in 365.25 days for the sidereal display, and an orbital second shaped like a spacecraft circles in 60 seconds.
Key details
Design and engineering
- TourbillonFlying triple-axis tourbillon: the first axis turns in 60 seconds, the second in 5 minutes, and the platform’s 20-minute rotation adds the third.
- DialTitanium hour and minute subdial, hand-angled and polished, with lacquered indexes and a differential gear system. Blued hands.
- Platform baseBlue grade 5 titanium celestial dial with hand-engraved, applied stars and zodiacal signs in 18-carat gold.
- CaseBlue titanium with sapphire apertures on the sides, a domed anti-reflective sapphire crystal and a blue titanium caseback. Water resistant to 30 m.
Calibre JCAM11
- Hand-wound
- 395 components
- 60-hour power reserve
- 21,600 vph (3 Hz)
- Vertical platform, one rotation in 20 minutes
- Flying triple-axis tourbillon
- Sidereal display, one rotation in 365.25 days
The reference
Technical specifications
| Reference | AT110.22.AA.AA.A |
|---|---|
| Collection | Astronomia |
| Calibre | JCAM11 |
| Movement | Hand-wound |
| Functions | Vertical Rotating Central Platform: Rotation in 20 minutes; Flying Triple-Axis Tourbillon: 1st Axis: Rotation in 60 Seconds; 2nd Axis: Rotation in 5 Minutes; 3rd Axis: Central Axe, travelling across the celestial vault in 20 Minutes; Orbital seconds: Rotation in 60 Seconds; Central, Day/night Indicator: Rotation in 24 hours; Sidereal Display: Rotation in 365.25 Days; Sidereal Month Indication |
| Power reserve | 60 hours |
| Frequency | 21,600 vph (3 Hz) |
| Components | 395 |
| Case dimensions | 47 mm |
| Case height | 25 mm |
| Case material | Blue titanium |
| Case details | Sapphire Apertures on Sides |
| Crystal | Unique Domed Sapphire with Anti-Reflective Treatment |
| Case back | Blue Titanium |
| Water resistance | 30 m (3 atm) |
| Celestial dial | Blue Grade 5 Titanium, 18-carat Gold hand-engraved and applied stars and zodiacal signs |
| Hour and minute subdial | Titanium, Hand Angled and Polished, Lacquered Indexes; Differential Gear System |
| Hands | Blued, Exclusive Jacob & Co. Shape |
| Strap | Blue alligator leather |
| Clasp | Blue Titanium Deployant Clasp |
| Limited edition | 6 pieces |
Buying with HYPA
Purchase with confidence
- Warranty card status disclosed for every piece we sell
- Free insured delivery within Australia · international quoted
- Payment by bank transfer
- Registered Australian dealerHYPA International Pty Ltd · Registered Victorian second-hand dealer, Registration No. SHD-0018017.
- Direct specialist supportSpeak with the HYPA team before, during and after the purchase.
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