Design and Case: Inspiration from Space Modules.
The Patek Philippe 6105G-001 Celestial Sunrise and Sunset stands out with its large white gold case, measuring 47 × 12.39 mm, inspired by the design of space modules. The case is combined with an integrated composite strap featuring an 'X' pattern. The dial is made of sapphire glass and displays the sky as seen from Geneva. This blend of modern design and eternal astronomical themes makes the watch a unique example of high horology.
Movement and Innovations: Caliber 240 C LU CL LCSO
Inside the case is the caliber 240 C LU CL LCSO - the world's first movement showing sunrise and sunset times and adjusting for daylight saving time changes. The development of this mini-automatic movement took over five years and required six patents.
The movement operates at a frequency of 3 Hz, equipped with a 22-carat gold mini-rotor and Gyromax balance with the Patek Philippe Seal. All 426 components of the movement, measuring 38 × 7.93 mm, are finished with the highest level of craftsmanship, creating a true micro-machine.
Astronomical Functions and Sky Display
The watch displays a sky chart with an ellipse indicating the visible portion of the sky for a given latitude (Geneva and similar regions). The dial shows the meridian, the meridian passage time of Sirius and the Moon, the angular motion of the Moon, and its phases. Additionally, there is a peripheral date indicated by a red hand. A hidden corrector at the '7 o'clock' position is used to adjust the date at the end of months with fewer than 31 days.
Complexity and Innovative Display Technologies
Patek Philippe employed a unique multi-layer system of ultra-thin rotating discs, creating a sense of depth and movement on the dial.
- The bottom disc - mineral, with 279 teeth, replicates the Moon's orbital position and controls the lunar phase indication via a planetary mechanism.
- The middle disc - sapphire with 356 teeth, carries the celestial map on its front side.
- The reverse side of the middle disc is decorated with an image of the Milky Way.
Each disc, only 0.2 mm thick, is protected by a sapphire glass with an elliptical frame printed on the inside, indicating the visible part of the night sky.
Ergonomics and Wrist Wear
Despite its impressive diameter, the watch sits comfortably on the wrist thanks to the absence of traditional lugs. The 12.39 mm thick case and the integrated flexible black composite strap with an 'X' pattern ensure comfortable wear. The strap is equipped with a reliable white gold folding clasp.
The accuracy of the movement is impressive: the deviation of the lunar day is only 0.05 seconds per day, or 18.385 seconds per year. The deviation of the sidereal day is 0.088 seconds per day, or 32.139 seconds per year. This level of precision confirms the engineering prowess and astronomical significance of the model.
Conclusion: Who Is the Patek Philippe 6105G-001 Celestial Sunrise and Sunset For?
This watch is for seasoned collectors looking to add to their collection of astronomical models from Patek Philippe. The price around $437,610 for the 47-mm case speaks to the status and exclusivity of the piece. It is not an everyday accessory, but a micro-mechanical mini-universe on your wrist.
Key Features of Patek Philippe 6105G-001 Celestial Sunrise and Sunset
- White gold case with space-inspired design and 'X' pattern
- Caliber 240 C LU CL LCSO with sunrise and sunset indication
- Unique multi-layer rotating disc system for sky display
- Peripheral date with convenient correction
- High accuracy of astronomical readings
- Integrated composite strap with white gold clasp
What are your impressions of the Patek Philippe 6105G-001 Celestial Sunrise and Sunset?
Do you think modern design in astronomical watches is the right direction for the brand? I look forward to your expert opinions and discussions in the comments.