Trans-Neptunian objects and centaurs with rings (original) (raw)
compiled by Wm. Robert Johnston
last updated 11 March 2024
Currently 4 trans-Neptunian objects and centaurs are known or suspected to have ring systems. The first object so identified was (10199) Chariklo in 2014. The (dwarf) planet (136108) Haumea was found to have a ring in 2017, in addition to its two satellites.
| designation | primarya (AU) | primarye | primarydiameter (km) | ringdesignation | ring radius(km) | ring width(km) | reported | notes |
|---|---|---|---|---|---|---|---|---|
| (2060) Chiron | 13.638 | 0.382 | 233 | 325 | 2015 by Ortiz et al. | observations are inconsistent in nature/number of rings, possibly from changes in the ring system structure | ||
| 350-420 | ? | 2019 by Sickafoose et al. | ||||||
| (10199) Chariklo | 15.754 | 0.172 | 248 | C1R | 391 | 6 | 2014 by Braga-Ribas et al. | |
| C2R | 405 | 7 | 2014 by Braga-Ribas et al. | |||||
| (50000) Quaoar | 43.219 | 0.035 | 1070 | Q2R | 2520 | 10 | 2023 by Pereira et al. | one satellite outside ring system |
| Q1R | 4057 | 60 | 2023 by Morgado et al. | |||||
| (136108) Haumea | 43.166 | 0.192 | 1595 | 2287 | 70 | 2017 by Ortiz et al. | two satellites outside ring system |
Sources:
- Braga-Ribas, F., et al., 2014, A ring system detected around the Centaur (10199) Chariklo, Nature, 508(7494):72-75.
- Braga-Ribas, F., et al., 2023, Constraints on (2060) Chiron’s size, shape, and surrounding material from the November 2018 and September 2019 stellar occultations, Astronomy and Astrophysics, 676:A72.
- Morgado, B. E., et al., 2021, Refined physical parameters for Chariklo's body and rings from stellar occultations observed between 2013 and 2020, Astronomy and Astrophysics, 652:A141.
- Morgado, B. E., et al., 2023, A dense ring of the trans-Neptunian object Quaoar outside its Roche limit, Nature, 614(7947):239-243.
- Ortiz, J. L., et al., 2015, Possible ring material around centaur (2060) Chiron, Astronomy and Astrophysics, 576:A18.
- Ortiz, J. L., et al., 2017, The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation, Nature, 550(7675):219-223.
- Ortiz, J. L., et al., 2023, Changing material around (2060) Chiron revealed by an occultation on December 15, 2022, Astronomy and Astrophysics, 676:L12.
- Pereira, C. L., et al., 2023, The two rings of (50000) Quaoar, Astronomy and Astrophysics, 673:L4.
- Sicardy, B., et al., 2020, The dynamics of rings around Centaurs and Trans-Neptunian objects, in The Trans-Neptunian Solar System, ed. by D. Prialnik, M. A. Barucci, and L. Young, Elsevier.
- Sickafoose, A. A., et al., 2019, Characterization of material around (2060) Chiron from a 2011 stellar occultation, EPSC-DPS Joint Meeting 2019, EPSC-DPS2019-1306.
- Sickafoose, A. A., et al., 2023, Material around the Centaur (2060) Chiron from the 2018 November 28 UT stellar occultation, Planetary Science Journal, 4(11):221.
© 2024 by Wm. Robert Johnston.
Last modified 11 March 2024.
Return to Home. Return to Astronomy and Space. Return to Asteroids with Satellites.