2017 FO161

2017 FO161 is a large trans-Neptunian object from the scattered disc located in the outermost region of the Solar System. It is estimated to measure approximately 600 kilometers (370 mi) in diameter and currently orbits at a distance of about 78.5 AU from the Sun.[1][3][4] The object was first observed by American astronomers Chad Trujillo and Scott Sheppard using the 4-meter Víctor M. Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile on 23 March 2017.[2] Precovery observations were made by the Pan-STARRS-1 survey at Haleakalā Observatory and by the Dark Energy Survey with DECam, dating back as far as March 2012 and January 2016, respectively.[1]

2017 FO161
Orbital diagram of 2017 FO161
Discovery[1][2]
Discovered byCTIO
Discovery siteCTIO
Discovery date23 March 2017
Designations
2017 FO161
TNO[3] · SDO[4]
distant[1]
Orbital characteristics[3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 4
Observation arc11.11 yr (~4,000 d)
Earliest precovery date19 March 2012[5]
Aphelion85.459 AU
Perihelion34.069 AU
59.764 AU
Eccentricity0.42994
462.03 yr (168,756 d)
240.958°
0° 0m 7.68s / day
Inclination54.350°
164.985°
151.017°
Physical characteristics
Mean diameter
612 km (est. at 0.09)[4]
0.09 (est.)[4]
4.3[3]

    See also

    References
    1. "2017 FO161". Minor Planet Center. Retrieved 6 March 2019.
    2. Trujillo, C.; Sheppard, S. S. (April 2018). "2017 FO161". Minor Planet Electronic Circulars. 2018-G10. Bibcode:2018MPEC....G...10T. ISSN 1523-6714.
    3. "JPL Small-Body Database Browser: (2017 FO161)" (2018-03-12 last obs.). Jet Propulsion Laboratory. Retrieved 6 March 2019.
    4. Johnston, Wm. Robert (18 August 2020). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 3 March 2021.
    5. https://www.minorplanetcenter.net/db_search/show_object?object_id=2017+FO161


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