2019 EU5

{{DISPLAYTITLE:{{mp|2019 EU|5}}}}

{{Infobox planet

| minorplanet = yes

| name = {{mp|2019 EU|5}}

| background = #C2E0FF

| image =

| image_size =

| caption =

| discovery_ref =

| discoverer = S. S. Sheppard
D. J. Tholen
C. Trujillo

| discovery_site = Mauna Kea Obs.

| discovered = 5 March 2019

| mpc_name = {{mp|2019 EU|5}}

| alt_names =

| pronounced =

| named_after =

| mp_category = TNO{{·}}ESDO (detached){{·}}ETNO{{·}}distant

| orbit_ref =

| barycentric = yes

| epoch = 2025-May-05
(JD 2460800.5)

| uncertainty = 4

| observation_arc = 5.03 yr (1,837 days)

| earliest_precovery_date = 6 January 2016

| aphelion = {{val|2395|fmt=commas|ul=AU}}

| perihelion = {{val|46.759|u=AU}}

| semimajor = {{val|1221|fmt=commas|u=AU}}

| eccentricity = {{val|0.9617|fmt=none}}

| period = {{val|42630|fmt=commas}} yr

| mean_anomaly = 359.331°

| mean_motion = {{Deg2DMS|0.0000231|sup=ms}} / day

| inclination = 18.207°

| asc_node = 109.227°

| arg_peri = 109.204°

| mean_diameter = 160–220 km {{small|(est. 0.1–0.2)}}

| rotation =

| albedo =

| spectral_type =

| magnitude = 25.6

| abs_magnitude = {{val|6.35|0.14}}

}}

{{mp|2019 EU|5}} is an extreme trans-Neptunian object from the scattered disc on a highly eccentric orbit in the outermost region of the Solar System. It was discovered on 5 March 2019, by American astronomers Scott Sheppard, David Tholen, and Chad Trujillo at Mauna Kea Observatories in Hawaii, and announced on 17 December 2021. It was 83.4 astronomical units from the Sun when it was discovered, making it one of the most distant known Solar System objects from the Sun {{asof|December 2021|lc=y}}. It has been identified in precovery images from 6 January 2016.

References

{{reflist|refs=

{{cite web

|type = 2021-01-16 last obs.

|title = JPL Small-Body Database Browser: (2019 EU15)

|url = https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=54231364

|publisher = Jet Propulsion Laboratory

|accessdate = 17 December 2021}}

{{cite web

|title = 2019 EU15

|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=2019+EU5

|work = Minor Planet Center

|publisher = International Astronomical Union

|accessdate = 17 December 2021}}

{{cite web

|title = MPEC 2021-Y19 : 2019 EU15

|url = https://minorplanetcenter.net/mpec/K21/K21Y19.html

|work = Minor Planet Electronic Circular

|publisher = Minor Planet Center

|accessdate = 17 December 2021}}

{{cite web

|title = Horizons System

|url = https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%272019+EU5%27&TABLE_TYPE=%27ELEMENTS%27&START_TIME=%272025-05-05%27&STOP_TIME=%272050-05-05%27&STEP_SIZE=%27100%20years%27&CENTER=%27@0%27&OUT_UNITS=%27AU-D%27

|publisher = Jet Propulsion Laboratory

|accessdate = 17 December 2021}} (Solution using the Solar System barycenter. Ephemeris Type: Osculating Orbital Elements, Coordinate Center: 500@0, Epoch: 2025-May-05

{{cite web

|title = List Of Centaurs and Scattered-Disk Objects

|url = https://www.minorplanetcenter.net/iau/lists/t_centaurs.html

|work = Minor Planet Center

|publisher = International Astronomical Union

|accessdate = 17 December 2021}}

{{cite web

|title = Asteroid Size Estimator

|url = https://cneos.jpl.nasa.gov/tools/ast_size_est.html

|work = Center for Near Earth Object Studies

|publisher = Jet Propulsion Laboratory

|accessdate = 17 December 2021}}