- Movement
- Hand-wound
- Size
- 47 mm
Overview
A vertical platform that turns every 20 minutes
The Jacob & Co. Astronomia Sky, reference AT110.21.AA.AA.A, in a black titanium case with a single-block sapphire caseband, 47 mm across and 25 mm high. It has a blue grade titanium openworked hour and minute dial, on a black alligator leather strap with a black DLC deployant clasp. This version is limited to 6 pieces.
A 1 ct, 288-facet Jacob-cut white diamond serves as the moon and completes a turn on its axis every 60 seconds. The zodiac constellations on the blued titanium platform base are inlaid in black gold.
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.
- DialBlue grade titanium, openworked hour and minute dial with blued hands.
- Platform baseBlued titanium with engraved zodiac constellations inlaid in black gold.
- CaseBlack titanium with a single-block sapphire caseband, a curved anti-reflective sapphire crystal and a black 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 | AT110.21.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; Off-centered Hour and Minute Dial with Differential Rotating, 1 ct, 288-facet, Jacob-Cut White Diamond: Rotation in 60 Seconds; 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 | Black titanium and single-block sapphire caseband |
| Crystal | Curved Anti-Reflective Sapphire Crystal |
| Case back | Black Titanium |
| Water resistance | 30 m (3 atm) |
| Dial | Blue Grade Titanium, Openworked Hour and Minute Dial |
| Platform base | Blued Titanium with Engraved and Black Gold Inlaid Zodiac Constellations |
| Hands | Blued, Exclusive Jacob & Co. Shape |
| Strap | Black alligator leather |
| Clasp | Black DLC 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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