O-type asteroid
The rare O-type asteroids have spectra similar to the unusual asteroid 3628 Boznemcová, which is the best asteroid match to the spectra of L6 and LL6 ordinary chondrite meteorites. Their spectra have a deep absorption feature longward of 0.75 μm.[1]
List
Seven asteroids have been classified as O-type by the second Small Main-Belt Asteroid Spectroscopic Survey (SMASSII) and none by Tholen's Eight-Color Asteroid Survey. With the exception of main-belt asteroid 3628 Božněmcová, all other bodies are near-Earth asteroids from the Apollo, Aten or Amor group:
| Designation | Class | Diam. | Refs |
|---|---|---|---|
| 3628 Božněmcová | main-belt | 6.914 km | MPC · JPL |
| 4034 Vishnu | Apollo | 0.42 km | MPC · JPL |
| 4341 Poseidon | Apollo | 2 km | MPC · JPL |
| 5143 Heracles | Apollo | 4.843 km | MPC · JPL |
| (8201) 1994 AH2 | Apollo | 1.859 km | MPC · JPL |
| (162385) 2000 BM19 | Aten | 0.57 km | MPC · JPL |
| 1997 RT | Amor | 0.3 km | MPC · JPL |
| Diameter: averaged estimates only; may change over time | |||
gollark: I mean, it's non-survivable under some notions of identity.
gollark: Also that since current "AI" approaches seem to work by just throwing data and masses of computing time at the problem, the barrier to entry will be higher than with a simpler solution.
gollark: A worrying thing about having self-driving cars have piles of onboard "AI" and processing is that that will probably make them more vulnerable to exciting security problems.
gollark: In the UK we have nationalized healthcare and it... mostly works? It does burn a ridiculous amount of money, though.
gollark: Touchscreen keyboards always do that. Shame there are so few phones with hardware keyboards.
See also
References
- S. J. Bus and R. P. Binzel, Phase II of the Small Main-belt Asteroid Spectroscopy Survey: A feature-based taxonomy, Icarus, Vol. 158, pp. 146 (2002).
| Main |
| ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Distribution |
| ||||||||
| Classification |
| ||||||||
| Exploration | |||||||||
| Lists |
| ||||||||
| |||||||||
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.