2014 FE72
{{short description|Extreme trans-Neptunian object from the inner Oort cloud}}
{{DISPLAYTITLE:{{mp|2014 FE|72}}}}
{{use dmy dates|date=February 2018}}
{{Infobox planet
| minorplanet = yes
| name = {{mp|2014 FE|72}}
| background = #C2E0FF
| image = 2014 FE72-orbit.png
| image_scale =
| caption = Diagram showing the highly eccentric orbit of {{mp|2014 FE|72}}
| discoverer = {{Ubl
}}
| discovery_site = Cerro Tololo Obs.
| discovered = 26 March 2014
| mpc_name = {{mp|2014 FE|72}}
| alt_names =
| pronounced =
| named_after =
| mp_category = {{Hlist
| SDO
| ETNO
| TNO
}}
| epoch = 21 January 2022 (JD 2459600.5)
| uncertainty = 3
| observation_arc = 6.98 yr (2,549 days)
| earliest_precovery_date =
| time_periastron = ≈ 6 October 1965[http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2014FE72 JPL Horizons] Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
±11 days
| aphelion = {{Ubl
| {{val|4052|u=AU}} (barycentric)
}}
| perihelion = {{Ubl
| {{val|36.101|u=AU}} (barycentric)
}}
| semimajor = {{Ubl
| {{val|2045|u=AU}} (barycentric)
}}
| eccentricity = {{Ubl
| {{val|0.9823}} (barycentric)
}}
| period = {{Ubl
| {{val|92400}} yr (barycentric)
}}
| mean_anomaly = {{Ubl
| {{val|0.219|u=°}} (barycentric)
}}
| mean_motion = {{Deg2DMS|0.00001525|sup=ms}} / day
| inclination = {{Ubl
| {{val|20.633|u=°}} (barycentric)
}}
| asc_node = {{Ubl
| {{val|336.829|u=°}} (barycentric)
}}
| arg_peri = {{Ubl
| {{val|133.921|u=°}} (barycentric)
}}
| mean_diameter = {{val|270|ul=km}} {{small|(est. at 0.08)}}
| rotation =
| albedo =
| spectral_type =
}}
{{mp|2014 FE|72}} is a trans-Neptunian object first observed on 26 March 2014, at Cerro Tololo Inter-American Observatory in La Serena, Chile. It is a possible dwarf planet, a member of the scattered disc, whose orbit extends into the inner Oort cloud. Discovered by Scott Sheppard and Chad Trujillo, the object's existence was revealed on 29 August 2016. Both the orbital period and aphelion distance of this object are well constrained. {{mp|2014 FE|72}} had the largest barycentric aphelion until 2018. However, the heliocentric aphelion of {{mp|2014 FE|72}} is second among trans-Neptunian objects (after the damocloid {{mpl|2017 MB|7}}). {{As of|2023}}, it is about {{convert|66|AU|e9km|abbr=unit|lk=out}} from the Sun.
Orbit
{{see also|List of Solar System objects most distant from the Sun}}
Planet_nine-etnos_now.png|Orbits of {{mp|2014 FE|72}} (green, at lower left) and other scattered/detached objects, along with hypothetical Planet Nine on the right
Planet_nine-etnos_now-close-new.png|2014 FE72 is seen at the top here in green, moving away from the Sun
Using the Solar System Barycenter as the orbital frame of reference, {{mp|2014 FE|72}}'s extremely elongated orbit (eccentricity = 0.98) has a perihelion of 36.1 AU, an aphelion of ~4,050 AU and a barycentric orbital period of ~92,400 years. The latter values are the largest known for any Solar System body that is not a long-period comet.{{refn|group=n|2017 MB7, an apparently much smaller object (absolute magnitude ~14) which might be an extinct comet, has a similar barycentric aphelion of ~2,800 AU and an orbital period of ~54,000 years.[https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2017MB7 JPL Small-Body Database Browser: (2017 MB7)]}} Based on the barycentric orbital period, {{mp|2014 FE|72}} takes roughly 5 times longer than Sedna to orbit the Sun.
{{mp|2014 FE|72}} last passed through perihelion around late 1965.
{{clear|left}}
See also
Notes
{{reflist|group="n"}}
References
{{reflist|refs=
| title = How many dwarf planets are there in the outer solar system? (updates daily)
| publisher = California Institute of Technology
| author = Michael E. Brown
| author-link = Michael E. Brown
| url = http://www.gps.caltech.edu/~mbrown/dps.html
| accessdate = 2016-09-15}}
| url = https://carnegiescience.edu/news/hunt-ninth-planet-reveals-new-extremely-distant-solar-system-objects
| title = Hunt for ninth planet reveals new extremely distant Solar System objects
| date = 29 August 2016 | website = CarnegieScience.edu
| publisher = Carnegie Institution
| access-date = 2016-08-31}}
| title = Absolute magnitude (H)
| website = Near Earth Object Program
| publisher = NASA/Jet Propulsion Lab
| url = http://neo.jpl.nasa.gov/glossary/h.html
| archive-url = https://web.archive.org/web/20010302182040/http://neo.jpl.nasa.gov/glossary/h.html
| url-status = dead
| archive-date = 2001-03-02
| accessdate = 2016-09-15}}
|type = 2021-03-18 last obs
|title = JPL Small-Body Database Browser: (2014 FE72)
|url = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014FE72
|archiveurl = https://web.archive.org/web/20180205154630/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014FE72
|archivedate = 5 February 2018
|url-status = live
|publisher = Jet Propulsion Lab
|accessdate = 26 August 2018
}}
|author=Horizons
|url=https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&TABLE_TYPE=ELEMENTS&OUT_UNITS=AU-D&COMMAND=%222014%20FE72%22&CENTER=%270%27&START_TIME=2022-01-21&STOP_TIME=2022-02-21&STEP_SIZE=1Y
|title=JPL Horizons: Barycentric Osculating Orbital Elements for 2014 FE72
|accessdate=6 June 2022|author-link = JPL Horizons On-Line Ephemeris System}}
| url=https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&TABLE_TYPE=ELEMENTS&OUT_UNITS=AU-D&COMMAND=%22Sedna%22&CENTER=%270%27&START_TIME=2016-01-01&STOP_TIME=2020-01-01&STEP_SIZE=1Y
| author=Horizons
| title=JPL Horizons: Barycentric Osculating Orbital Elements for (90377) Sedna
| accessdate=12 November 2018| author-link=JPL Horizons On-Line Ephemeris System
}}
| url = http://www.minorplanetcenter.net/mpec/K16/K16Q43.html
| title = MPEC 2016-Q43 : 2014 FE72
| last = Williams
| first = G. V.
| date = 29 August 2016
| publisher = Minor Planet Center
| access-date = 2016-08-31}}
|title=AstDyS 2014FE72 Ephemerides
|publisher=Department of Mathematics, University of Pisa, Italy
|url=https://newton.spacedys.com/astdys/index.php?pc=1.1.3.1&n=2014FE72&oc=500&y0=2023&m0=1&d0=1&y1=2028&m1=1&d1=5&ti=366&tiu=days
|accessdate=31 October 2023}} (Distance to Sun [R] from 2023 to 2028.)
}}
External links
- {{AstDys|2014FE72}}
- {{JPL small body|id=3757872}}
{{Trans-Neptunian objects}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:2014 FE72}}