54509 YORP scaled one in three thousand

I did not contributed on doing the original file from the collection of asteroid radar models of the PDS site, I just simplify and softened it using Blender.

The file's names explained: name_1_x_10_y.stl is 1 : x * 10y. So _1_6_10_7 is 1:600000000 or one in 60 million.

54509 YORP

Ivan Osipovich Yarkovsky proposed, in 1900, a mechanism in which a small object can speed up by emitting infra-red radiation, from the solar radiation heating. Shortly, an object rotating the same way as its orbit (prograde) it always moving its hotter side to the trailing side, so the more energetic part is generating a radiation pressure in the moving direction, accelerating the object. A variant of this mechanism was called Yarkovsky-O'Keefe-Radzievskii-Paddack effect (YORP). It is said that a small, irregular object, by the emission and reflection of radiation pressure over its irregularities, a small "paddle" effect is done over the whole asteroid, accelerating the spin of it, and changing the rotation axis. This effect was studied on the asteroid presented here, and it was named by the initials. This asteroid is expected to accelerate up to 3 RPM (20 second period) in the near future, when the centripetal forces will not be enough to hold the asteroid up, and it will break apart into smaller pieces.

Type: Near Earth Asteroid. Potentially Hazardous Object.
Orbit: Sun. Earth coorbital asteroid.
Orbital period: 365 d 6 h 57 min.
Rotational period: 12 min 10 s.
Composition: ?.
Density: ?.
Dimensions: 150 m × 128 m × 93 m
Model scale: 1:1x103 (15cm) 1:3x103 (7.5cm)

References

"Lawrence, K. and Benner, L., Radar shape models of asteroids compiled by Lawrence V1.0. urn:nasa:pds:gbo.ast.jpl.radar.shape_models::1.0. NASA Planetary Data System, 2020."

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



YORP
1K, 3K



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



Elektra
1M, 2M, 4M
<img src="https://i.ibb.co/cw9z1Px/el

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