2015 BP519
Perihelion 35.2 AU | | |
| 428.03 AU | ||
| Eccentricity | 0.9178 | |
| 8856 yr (3,234,488 d) | ||
| 358.39° | ||
| 0° 0m 0.36s / day | ||
| Inclination | 54.125° | |
| 135.11° | ||
| ≈ 7 September 2058[5] ±1 month | ||
| 348.37° | ||
| Physical characteristics | ||
Mean diameter | 524 km (est.)[6] 584 km (est.)[4] | |
| 0.08 (assumed)[6] 0.09 (assumed)[4] | ||
| 21.5 | ||
| 4.4[2][3] | ||
2015 BP519, nicknamed Caju,extended scattered disc object (ESDO),[4] and fits into the group of extreme objects that led to the prediction of Planet Nine, and has the highest orbital inclination of any of these objects.[a]
Orbit and classification
2015 BP519 orbits the Sun at a distance of 35.2–821
semi-major axis of 428 AU). Its orbit has an exceptionally high eccentricity of 0.92 and an inclination of 54° with respect to the ecliptic.[3] This makes it a probable outlier among the known extreme trans-Neptunian objects.[3][8]
Planet Nine
2015 BP519 fits into the group of
perihelion greater than 30 AU and a semi-major axis greater than 250 AU, with 2015 BP519 having the highest orbital inclination of any of these objects.[a] Subsequently, unrefereed work by de la Fuente Marcos (2018) found that 2015 BP519's current orbital orientation in space is not easily explained by the same mechanism that keeps other extreme trans-Neptunian objects together, suggesting that the clustering in its orbital angles cannot be attributed to Planet Nine's influence.[8]
However, regardless of the current direction of its orbit, its high orbital inclination appears to fit into the class of high-semi major axis, high-inclination objects predicted by Batygin & Morbedelli (2017) to be generated by Planet Nine.
Numbering and naming
The body's
DECam instrument of the Víctor M. Blanco Telescope at Cerro Tololo Inter-American Observatory in Chile.[2] Its discovery was reported in a paper published by Dark Energy Survey astronomers in 2018.[7]
Physical characteristics
According to
See also
Notes
- ^ a b c d e The nickname "Caju" is mentioned in the downloadable PowerPoint presentation "Evaluating the Dynamical Stability of Outer Solar System Objects in the Presence of Planet Nine", by Juliette Becker, Fred Adams, Tali Khain, Stephanie Hamilton, David Gerdes at University of Michigan.
References
- ^ a b "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. Retrieved 9 February 2018.
- ^ a b c d e "2015 BP519". Minor Planet Center. Retrieved 10 May 2018.
- ^ a b c d e f "JPL Small-Body Database Browser: (2015 BP519)" (2018-02-15 last obs.). Jet Propulsion Laboratory. Retrieved 10 May 2018.
- ^ a b c d e "List of Known Trans-Neptunian Objects". Johnston's Archive. 7 October 2018. Retrieved 23 October 2018.
- 3-sigma.)
- ^ a b Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 23 October 2018.
- ^ S2CID 55163842.
- ^ S2CID 119433944.
External links
- Discovery and Dynamical Analysis of an Extreme Trans-Neptunian Object with a High Orbital Inclination, 14 May 2018
- A New World's Extraordinary Orbit Points to Planet Nine 15 May 2018
- 2015 BP519 at AstDyS-2, Asteroids—Dynamic Site
- 2015 BP519 at the JPL Small-Body Database
2015 in space | ||
|---|---|---|
Space probes |
| |
| Space observatories |
| |
- Aldebaran b
- evaporation of Gliese 436 b
- Gliese 1132 b
- HD 155233 b
- HD 164595 b
- HD 219134
- HIP 11915 b
- K2-3d
- K2-18b
- K2-22b
- K2-24b
- K2-24c
- KELT-4Ab
- Kepler-438b
- Kepler-440b
- Kepler-442b
- Kepler-444
- b
- c
- d
- e
- f
- Kepler-451b
- Kepler-452b
- Kepler-453b
- KOI-4878.01
- LkCa 15 b
- spectrum of 51 Pegasi b
- WASP-121b
- Wolf 1061c
- 2015 BP519
- US 708
- EGS-zs8-1 (announced)
- WISE J224607.57−052635.0
- 1SWASP J093010.78+533859.5
- ASASSN-15lh
- EGSY8p7
- Tabby's Star
- 541132 Leleākūhonua
- VFTS 352 contact binary
- GW150914 (first observation of gravitational waves)
- GW151226
