2013 SY99

2013 SY99
The orbits of 2013 SY99 (left; light blue) and other detached objects, along with the hypothetical Planet Nine's orbit (right; green)
Discovery[1]
Discovered byOSSOS
Discovery siteCFHT
Discovery date29 September 2013
Designations
2013 SY99
uo3L91[2] (OSSOS survey designation)
TNO · detached
Orbital characteristics
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 4[3]
Observation arc4.30 yr[3]
Earliest precovery date5 September 2013
Aphelion
Perihelion50.029 ± 0.056 AU[3]
(7.48 ± 0.01 billion km; 4.65 ± 0.01 billion mi)
  • Barycentric: 730 AU[4][n 1]
    (109 billion km; 68 billion mi)
  • Heliocentric: 690.4 ± 22.5 AU[3]
    (103.3 ± 3.4 billion km; 64.2 ± 2.1 billion mi)
Eccentricity0.9274±0.0024[3]
359.292°±0.034°[3]
0.203±0.010 arcsec/day[3]
Inclination4.228°±0.001°[3]
29.493°±0.005°[3]
≈ 4 December 2054[6]
±1 month
32.037°±0.114°[3]
Jupiter MOID45.00 AU[3]
(6.7 billion km; 4.2 billion mi)
Physical characteristics
≈250 km (160 mi)[7]
0.05±0.03[7]
moderately red[7]
24.5 (V)[8]
23.67 (peak 2055)[3]
6.7[3][8]

2013 SY99, also known by its OSSOS survey designation uo3L91, is a trans-Neptunian object discovered on September 29, 2013 by the Outer Solar System Origins Survey using the Canada–France–Hawaii Telescope at Mauna Kea Observatory. This object orbits the Sun between 50 and 1,300 AU (7.5 and 190 billion km), and has a barycentric orbital period of nearly 20,000 years.[4][5][1] It has the fourth largest semi-major axis for an orbit with perihelion beyond 38 AU.[9][10] 2013 SY99 has one of highest perihelia of any known extreme trans-Neptunian object, behind sednoids including Sedna (76 AU), 2012 VP113 (80 AU), and Leleākūhonua (65 AU).

  1. ^ a b Cite error: The named reference nature20161018 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference OSSOS VI was invoked but never defined (see the help page).
  3. ^ a b c d e f g h i j k l m n o 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 barycenter was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference science20161017 was invoked but never defined (see the help page).
  6. ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
  7. ^ a b c Cite error: The named reference Bannister2017 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference MPEC2017-G55 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference mpc_qGT37_aGT250 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Bannister201610 was invoked but never defined (see the help page).


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