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Arda scaled one in sixty million

tato_713

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Description

This is a scaled model of the Arda, the planet where it takes place the universe of J. R. R. Tolkien, that is, the place of The Lord of the Rings and The Hobbit. I've made the topography by myselft, since I couldn't find a complete topographic map of the planet. I didn't use any information from the books, I've based this work on a few maps and a couple of descriptions. Some clues of the topography were the differences between global maps, from different eras. They seems to be different sea levels, which helps to guess some of the terrain. The First Age map looks like if it was during an ice age, with lower sea level; while the Second Age look more warm, the Helcar sea is almost dried. I took the artistic license to invent and guess a lot of details, so don't take this as cannon, nor even as an exact representation. In the Tolkien's universe timeline it is implied that the world was at first flat, a sort of Flat Earth, but was later "spherized" at some time. I preffer to see it as a normal planet in order to compare with other science fiction planets. Tolkien itself said that his Middle-Earth could be taken as an "alternative past" of our reality. The continents of Arda are obviously representation of real Earth ones. Middle-Earth is analogous to Europe, Hither Lands to Africa, Aman to the Americas, Ekkaia to the Pacific ocean and the Dark Land is something between Australia and Antarctica.

The size of Arda

The size of the planet was a little troubling to guess at first, but latter I found that the Middle-Earth was supposed to be around 2000km across. Using this constrain the total diameter of Arda is about 5400km, a little bigger than Titan, Ganymede or Mercury. If its density is similar to that of the last one, its surface gravity acceleration (g) must be nearly 3.7 m/s², 38% of the Earth's gravity.

References

Surf to STL function for MATLAB

I spend part of my time making these models, letting them available and free for everyone. If you want to support my work, you can contribute with me here:

Other astronomical objects

Object	Scale [1:x] K = 10³ (thousand) M = 10⁶ (million) G = 10⁹ (billion)	Image
Inner Solar System
Mercury	20M, 60M, 120M
Venus	60M, 120M, 250M
Earth	60M, 120M, 250M
Luna	10M, 20M, 60M
Mars	20M, 60M, 120M
Phobos and Deimos	200K, 500K
Man-made
Salyut 7	40, 48, 80, 160
Near Earth Asteroids
Moshup and Squannit	8K, 20K, 40K
Ra-Shalom	20K, 40K
Castalia	8K, 20K, 40K
Bacchus	8K, 20K
Bennu	3K, 8K
Ryugu	3K, 8K, 20K
Geographos	40K, 80K
Phaethon	40K, 80K
Itokawa	3K, 8K
Eros	80K, 200K, 500K
Nereus	3K, 8K
Didymos and Dimorphos	8K, 20K
Mithra	20K, 40K
Golevka	8K
Toutatis	40K, 80K
Main Asteroid Belt
Gaspra	200K
Annefrank	40K, 80K
Braille	20K, 40K
Vesta	2M, 4M, 10M
Šteins	40K, 80K, 200K
Iris	2M, 4M
Hebe	1M, 2M, 4M
Lutetia	500K, 1M, 2M
Julia	1M, 2M, 4M
Mathilde	500K, 1M
Juno	2M, 4M
Ceres	4M, 10M
Pallas	4M, 10M
Kleopatra	2M, 4M
Ida	500K, 1M
Psyche	2M, 4M
Interamnia	2M, 4M
Hygiea	2M, 4M, 10M
Antiope	1M, 2M
Jovian System
Jupiter	500M, 1G
Amalthea	2M, 4M
Thebe	1M, 2M
Io	20M, 60M
Europa	20M, 60M
Ganymede	60M, 120M
Callisto	60M, 120M
Saturn System
Saturn	500M, 1G
Pan, Daphnis and Atlas	80K, 200K, 500K, 1M
Prometheus and Pandora	1M, 2M
Janus and Epimetheus	2M, 4M
Mimas	2M, 4M, 10M
Methone, Anthe and Pallene	40K, 80K
Enceladus	4M, 10M
Tethys	4M, 10M, 20M
Telesto and Calypso	200K, 500K
Dione	4M, 10M, 20M
Helene	500K, 1M
Rhea	10M, 20M
Titan	60M, 120M
Hyperion	2M, 4M
Iapetus	10M, 20M
Phoebe	1M, 2M, 4M
Uranian System
Uranus	250M, 500M, 1G
Puck	1M, 2M, 4M
Miranda	4M, 10M
Ariel	10M, 20M
Umbriel	10M, 20M
Titania	10M, 20M
Oberon	10M, 20M
Neptunian System
Neptune	250M, 500M, 1G
Larissa	2M, 4M
Proteus	2M, 4M, 10M
Triton	20M
Comets
Tempel 1	40K, 80K, 200K
Wild 2	40K, 80K
Churyumov-Gerasimenko	20K, 40K, 80K
Hartley 2	20K, 40K, 80K
Borrelly	40K, 80K, 200K
Halley	80K, 200K
Centaurs and TNOs
Hidalgo	500K, 1M
Chariklo	2M, 4M
Pluto and Charon	10M, 20M
Styx, Nix, Kerberos and Hydra	500K, 1M
Haumea, Namaka and Hiʻiaka	10M, 20M
Arrokoth	200K, 500K, 1M
Largest TNOs and their moons	10M, 20M
Extrasolar
Exoplanets	120M, 250M, 500M
Nearest white dwarfs	120M, 250M
HD 189733 b	1G
Pulsars	200K, 500K
Cygnus X-1 accretion disk	10M, 20M
M87* photon ring	1.5*10¹⁴
Sky maps
Heliosphere	7.510¹³, 1.510¹⁴
Constellations	-
CMBR	2*10²⁸
Ancient
Earth (540 Mya to 20 Mya)	60M, 120M, 250M
Luna (4 Gya)	20M, 60M
Speculative
Planet Nine	250M, 500M
Cube planet	60M, 120M, 250M
Science Fiction
Ghroth	4M, 10M
Arda	60M, 120M
B612	10, 20, 32, 40
Mesklin	500M, 1G
Arrakis	60M, 120M
Borg cube	8K, 20K, 40K
Pern	60M, 120M
Europa Monolith	200K, 500K
Leonora Christine	500, 600, 1K, 3K
Rama	80K, 200K, 500K
Death Star	500K, 1M, 2M
Starkiller Base	2M, 4M, 10M
Eternia	60M, 120M
Visitors mothership	20K, 40K
Wheel of Time Earth	60M, 120M, 250M
Nirn, Secunda and Masser	20M, 60M, 120M
ID mothership	2M, 4M, 10M
ID troop transporter	200, 350, 500, 1K
Heptapod spaceship	1K, 3K, 8K
Gaijin flowership	3K
Red Moon	60M, 120M
Halo Array	4M, 10M, 20M, 60M
Gem Homeworld	120M, 250M, 500M
Citadel of Ricks	200K
The Skeld	40, 80, 160, 350, 500
Misc
Mars (1962 reconstruction)	60M, 120M
Flat Earth	250M
Expanding Earth	60M, 120M
Spaceship of Ezekiel	80, 160