2015 BP519

2015 BP519
Orbital diagram of 2015 BP519 and other extreme objects along with hypothetical Planet Nine
Discovery[1][2]
Discovered byDark Energy Survey
Discovery siteCerro Tololo Obs.
Discovery date17 January 2015
(first observed only)
Designations
2015 BP519
Caju (nickname)[a]
TNO[3] · ESDO[4] · ETNO
distant[2]
Orbital characteristics[3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 5
Observation arc3.22 yr (1,176 d)
Aphelion820 AU
Perihelion35.2 AU
428.03 AU
Eccentricity0.9178
8856 yr (3,234,488 d)
358.39°
0° 0m 0.36s / day
Inclination54.125°
135.11°
≈ 7 September 2058[5]
±1 month
348.37°
Physical characteristics
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,[a] is an extreme trans-Neptunian object from the scattered disc on a highly eccentric and inclined orbit in the outermost region of the Solar System.[7] It was first observed on 17 January 2015, by astronomers with the Dark Energy Survey at Cerro Tololo Observatory (W84) in Chile.[1][2] It has been described as an 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]

  1. ^ a b Cite error: The named reference MPC-CEN-SDO-list was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c d Cite error: The named reference johnstonsarchive-TNO-list was invoked but never defined (see the help page).
  5. ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
  6. ^ a b Cite error: The named reference Brown-dplist was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Becker-2018 was invoked but never defined (see the help page).


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