(691721) 2014 QY441

Last updated
(691721) 2014 QY441
Discovery [1]
Discovered by Pan-STARRS
Discovery site Haleakala
Discovery date21 August 2014
Designations
(691721) 2014 QY441
2014 QY441
TNO [1]  · res 3:4 [2] [3]  · distant [1]  · p-DP [4]
Orbital characteristics [5]
Epoch 17 October 2024 2460600.5
Observation arc 6635 days (18.17 years)
Earliest precovery date2 November 2005
Aphelion 39.3 AU
Perihelion 33.6 AU
36.6 AU
Eccentricity 0.074
221.8 yrs (81048 d)
260.65
0.000444
Inclination 10.1°
79.649
January 11 2086
115.48
Earth  MOID 32.9 AU
Jupiter  MOID 28.5 AU
TJupiter 5.352
Physical characteristics
262 km [3]
360 km [4]
0.8 [4]
5.8 [4]

    (691721) 2014 QY441, also written 2014 QY441, is a resonant trans-Neptunian object in the Kuiper belt. [1] It is in a 3:4 mean-motion orbital resonance with the planet Neptune. [2] [3] It was discovered in 21 August 2014 by the Pan-STARRS project at Haleakala in the big island of Hawaii, United States. [1] It is a dwarf planet candidate and measures about 350 km in diameter. [4]

    Contents

    Orbit and classification

    2014 QY441 orbits the Sun at a distance of 33.9-39.3 AU every 221.8 years (81048.1 days, semi-major axis of 36.6 AU). Its orbit has an orbital eccentricity of 0.074 and an orbital inclination of 10°, with respect to the ecliptic. [5] The body's observation arc begins with its precovery date at Kitt Peak. [1]

    2014 QY441 is a trans-Neptunian object and belongs to a small number of resonant trans-Neptunian objects with semi-major axes of 36.0-37.0 AU. These objects stay in a 3:4 mean-notion orbital resonance with the planet Neptune, that is, for every three orbits the object makes, Neptune makes four. [3] [2] These objects are located in the inner rim of the Kuiper belt, with the plutinos, inner classicals, and other resonances, a large circumstellar disk of mostly non-resonant classical Kuiper belt objects.

    Numbering and naming

    2014 QY441 was numbered by the Minor Planet Center on 4 April 2024, receiving the number (691721) in the minor planet catalog ( M.P.C.  ?). [6] As of 2024, it has not been named. [1]

    Physical characteristics

    Based on a generic magnitude-to-diameter conversion, 2014 QY441 measures approximately 308 kilometers (190 miles) in diameter, for an assumed albedo of 0.8 and an magnitude of 5.7. [3] Michael E. Brown measures a diameter of 316 km with an absolute magnitude of 5.8 and an albedo of 0.08. On his website, Michael E. Brown considers 2014 QY441 as a possible dwarf planet, which is the category with the lowest certainty in his 5-class taxonomic system. [4] As of 2024, no physical characteristics has been obtained from photometric observations. The body's color, rotation period, pole, and shape remain unknown.

    See also

    Related Research Articles

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    References

    1. 1 2 3 4 5 6 7 "691721 (2014 QY441)". Minor Planet Center. Retrieved 10 September 2021.
    2. 1 2 3 Marc W. Buie. "Orbit Fit and Astrometric record for 691721". SwRI (Space Science Department). Retrieved 23 October 2017.
    3. 1 2 3 4 5 "List of Known Trans-Neptunian Objects". Johnston's Archive. 18 August 2020. Retrieved 10 September 2021.
    4. 1 2 3 4 5 6 Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology . Retrieved 10 September 2021.
    5. 1 2 "JPL Small-Body Database Browser: 691721 (2014 QY441)" (2020-12-09 last obs.). Jet Propulsion Laboratory . Retrieved 10 September 2021.
    6. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 September 2021.
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