2015 BP519

2015 BP519
The orbits of 2015 BP519 and other extreme objects along with hypothetical Planet Nine
Discovery [1]
Discovered by DES
Discovery site CTIO
Discovery date 27 November 2014
Designations
MPC designation 2015 BP519
Caju (nickname)
TNO [2] · detached
distant [1]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 4
Observation arc 3.22 yr (1,176 d)
Aphelion 826 AU
Perihelion 35.14 AU
430 AU
Eccentricity 0.918
8932 years
358.36°
0.000110°/day
Inclination 54.1173°
135.192°
348.39°
Physical characteristics
Mean diameter
 400–700 km
21.5
4.402[2]

    2015 BP519, nicknamed Caju[3], is a detached trans-Neptunian object on a highly eccentric and inclined orbit in the outermost region of the Solar System.[4] It was first observed on 27 November 2014, by astronomers of the Dark Energy Survey using the DECam instrument of the Victor M. Blanco Telescope at Cerro Tololo Inter-American Observatory in Chile.[1]

    Its estimated diameter of 400–700km makes it a potential dwarf planet.

    The object orbits the Sun at a distance of 35.1–824.6 AU once every 8912 years and 1 month (semi-major axis of 430 AU). Its orbit has an exceptionally high eccentricity of 0.92 and an inclination of 54° with respect to the ecliptic and this makes it a probable outlier among the known extreme trans-Neptunian objects.[2][5]

    It is regarded by many as one of more than a dozen extreme trans-Neptunian objects with perihelion greater than 30 AU and a semi-major axis greater than 250 AU. However, the orientation of its path in space makes it difficult to assume that the same mechanism that keeps other extreme trans-Neptunian objects together may have sent this object to its current orbit.[5]

    See also

    References

    1. 1 2 3 "2015 BP519". Minor Planet Center. Retrieved 10 May 2018.
    2. 1 2 3 4 "JPL Small-Body Database Browser: (2015 BP519)" (2018-02-15 last obs.). Jet Propulsion Laboratory. Retrieved 10 May 2018.
    3. ↑ https://aas.org/files/resources/dps49_becker.pptx
    4. ↑ Becker, J. C.; Khain, T.; Hamilton, S. J.; Adams, F. C.; Gerdes, D. W.; Zullo, L.; Franson, K.; Millholland, S.; Bernstein, G. M.; Sako, M.; Bernardinelli, P.; Napier, K.; Markwardt, L.; Lin, Hsing Wen; Wester, W.; Abdalla, F. B.; Allam, S.; Annis, J.; Avila, S.; Bertin, E.; Brooks, D.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Cunha, C. E.; D'Andrea, C. B.; da Costa, L. N.; Davis, C.; De Vicente, J.; Diehl, H. T.; Doel, P.; Eifler, T. F.; Flaugher, B.; Fosalba, P.; Frieman, J.; García-Bellido, J.; Gaztanaga, E.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Hartley, W. G.; Hollowood, D. L.; Honscheid, K.; James, D. J.; Kuehn, K.; Kuropatkin, N.; Maia, M. A. G.; March, M.; Marshall, J. L.; Menanteau, F.; Miquel, R.; Ogando, R. L. C.; Plazas, A. A.; Sanchez, E.; Scarpine, V.; Schindler, R.; Sevilla-Noarbe, I.; Smith, M.; Smith, R. C.; Soares-Santos, M.; Sobreira, F.; Suchyta, E.; Swanson, M. E. C.; Walker, A. R.; DES Collaboration (1 August 2018). "Discovery and Dynamical Analysis of an Extreme Trans-Neptunian Object with a High Orbital Inclination". The Astronomical Journal. 156: 81. arXiv:1805.05355. Bibcode:2018AJ....156...81B. doi:10.3847/1538-3881/aad042.
    5. 1 2 de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (12 September 2018). "A Fruit of a Different Kind: 2015 BP519 as an Outlier among the Extreme Trans-Neptunian Objects". Research Notes of the AAS. 2 (3): 167. arXiv:1809.02571. Bibcode:2018RNAAS...2c.167D. doi:10.3847/2515-5172/aadfec.

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