(505478) 2013 UT15

Last updated

(505478) 2013 UT15
Discovery [1]
Discovered by OSSOS
Discovery site Mauna Kea Obs.
Discovery date2 August 2013
Designations
(505478) 2013 UT15
o3L83 [2]
TNO [1]  · SDO [3]
detached  · distant [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 4
Observation arc 4.08 yr (1,489 days)
Aphelion 347.97 AU
Perihelion 43.853 AU
195.91 AU
Eccentricity 0.7762
2742.19 yr (1,001,586 days)
353.50°
0° 0m 1.44s / day
Inclination 10.682°
191.97°
252.40°
Physical characteristics
Dimensions243 km estimate) [3]
260 km (est. at 0.08) [5]
340 km estimate) [6]
0.04 (estimate) [6]
0.09 (assumed) [3]
BB (estimate) [6]
6.2951 [1]  ·6.4 [6]

    (505478) 2013 UT15 is an extreme trans-Neptunian object from the scattered disc, located in the outermost regions of the Solar System, approximately 260 kilometers (160 miles) in diameter. It was discovered on 2 August 2013, by astronomers of the Outer Solar System Origins Survey at Mauna Kea Observatory, Hawaii, United States. [4]

    Contents

    Orbit

    With a semi-major axis of 196  AU, 2013 UT15 orbits the Sun at a distance of 43.9–348 AU once every 2,742 years. Its orbit has an eccentricity of 0.78 and an inclination of 11° with respect to the ecliptic. [1] It has a similar orbit to (148209) 2000 CR105 , except for a smaller inclination.

    2013 UT15 belongs to a small number of detached objects with perihelion distances of 30 AU or more, and semi-major axes of 150 AU or more. [7] Such objects can not reach such orbits without some perturbing object, which lead to the speculation of planet nine.

    Physical characteristics

    Spectral type

    The object is estimated to have a bluish spectra (BB). [6]

    Diameter

    2013 UT15 has been estimated to measure 243 and 340 kilometers in diameter, based on an assumed albedo of 0.09 and 0.04, respectively. [3] [6] A generic magnitude-to-diameter conversion gives a mean-diameter of 260 kilometers, [5] using with a typical albedo of 0.08 and a published absolute magnitude of 6.2951. [1]

    Numbering and naming

    2013 UT15 was numbered (505478) by the Minor Planet Center on 4 November 2017 ( M.P.C. 107067). [8] As of 2017, this minor planet has not received a name. [4]

    Related Research Articles

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    <span class="nowrap">(528381) 2008 ST<sub>291</sub></span>

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    <span class="nowrap">(127546) 2002 XU<sub>93</sub></span>

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    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 505478 (2013 UT15)" (2017-08-30 last obs.). Jet Propulsion Laboratory. Retrieved 10 November 2017.
    2. Shankman, Cory; et al. (2017). "OSSOS. VI. Striking Biases in the Detection of Large Semimajor Axis Trans-Neptunian Objects". The Astronomical Journal . 154 (2): 50. arXiv: 1706.05348 . Bibcode:2017AJ....154...50S. doi: 10.3847/1538-3881/aa7aed . hdl:10150/625487. S2CID   3535702.
    3. 1 2 3 4 Wm. Robert Johnston (15 October 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 10 November 2017.
    4. 1 2 3 "505478 (2013 UT15)". Minor Planet Center. Retrieved 10 November 2017.
    5. 1 2 "Asteroid Size Estimator". CNEOS – NASA/JPL. Retrieved 9 November 2017.
    6. 1 2 3 4 5 6 "How many dwarf planets are there in the outer solar system?". Gps.caltech.edu. Retrieved 10 November 2017.
    7. minorplanetcenter.net: q>30, a>150
    8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 November 2017.