About: 2021 RR205

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2021 RR205 is an extreme trans-Neptunian object and sednoid discovered by astronomers Scott Sheppard, David Tholen, and Chad Trujillo with the Subaru Telescope at Mauna Kea Observatory on 5 September 2021. It resides beyond the outer extent of the Kuiper belt on a distant and highly eccentric orbit detached from Neptune's gravitational influence, with a large perihelion distance of 55.5 astronomical units (AU). Its large orbital semi-major axis (~1,000 AU) suggests it is potentially from the inner Oort cloud. Like 2013 SY99, 2021 RR205 lies in the 50–75 AU perihelion gap that separates the detached objects from the more distant sednoids; dynamical studies indicate that such objects in the inner edge this gap weakly experience "diffusion", or inward orbital migration due to minuscule pertur

Attributes	Values
rdf:type	Thing place dbo:Location schema:Place celestial body Planet planet
rdfs:label	2021 RR205 (en)
rdfs:comment	2021 RR205 is an extreme trans-Neptunian object and sednoid discovered by astronomers Scott Sheppard, David Tholen, and Chad Trujillo with the Subaru Telescope at Mauna Kea Observatory on 5 September 2021. It resides beyond the outer extent of the Kuiper belt on a distant and highly eccentric orbit detached from Neptune's gravitational influence, with a large perihelion distance of 55.5 astronomical units (AU). Its large orbital semi-major axis (~1,000 AU) suggests it is potentially from the inner Oort cloud. Like 2013 SY99, 2021 RR205 lies in the 50–75 AU perihelion gap that separates the detached objects from the more distant sednoids; dynamical studies indicate that such objects in the inner edge this gap weakly experience "diffusion", or inward orbital migration due to minuscule pertur (en)
foaf:name	(en)
dct:subject	Astronomical objects discovered in 2021 Discoveries by Chad Trujillo Discoveries by David J. Tholen Discoveries by Scott S. Sheppard Extreme trans-Neptunian objects Minor planet object articles (unnumbered) Sednoids
Wikipage page ID	71810758 (xsd:integer)
Wikipage revision ID	1115365747 (xsd:integer)
Link from a Wikipage to another Wikipage	Scott S. Sheppard Scott Sheppard Planetary migration Precovery David Tholen Degree (angle) Detached object Julian day Perihelion Perturbation (astronomy) Semi-major axis Subaru Telescope Astronomical objects discovered in 2021 Discoveries by Chad Trujillo Discoveries by David J. Tholen Discoveries by Scott S. Sheppard Extreme trans-Neptunian objects Mauna Kea Observatory Geometric albedo Oort cloud Minor planet object articles (unnumbered) Sednoids Kuiper belt Trans-Neptunian object Distant minor planet Julian year (astronomy) Dark Energy Survey Extreme trans-Neptunian object Chad Trujillo Neptune Astronomical units Mauna Kea Observatories Sednoid Cerro Tololo Observatory
sameAs	2021 RR205 2021 RR205
dbp:wikiPageUsesTemplate	dbt:2022_in_space dbt:AstDys dbt:Deg2DMS dbt:Infobox_planet dbt:JPL_small_body dbt:Mp dbt:Mpl dbt:Reflist dbt:Small dbt:Small_Solar_System_bodies dbt:Trans-Neptunian_objects dbt:Use_dmy_dates dbt:Val dbt:·
abs magnitude	6.740000 (xsd:double)
arg peri	208.574000 (xsd:double)
asc node	108.345000 (xsd:double)
background	#C2E0FF (en)
barycentric	yes (en)
discovered	2021-09-05 (xsd:date)
discoverer	Scott S. Sheppard David Tholen Chad Trujillo
discovery site	Mauna Kea Observatories
earliest precovery date	2017-07-24 (xsd:date)
eccentricity	0.943950 (xsd:double)
epoch	2023-02-25 (xsd:date)
inclination	7.644000 (xsd:double)
magnitude	24.600000 (xsd:double)
mean anomaly	0.363000 (xsd:double)
mean diameter	100 (xsd:integer)
mean motion	/ day (en)
minorplanet	yes (en)
mp category	TNOsednoiddetacheddistant (en)
observation arc	1.61259336E8 (second)
perihelion	55.541 (astronomicalUnit)
semimajor	990.9 (astronomicalUnit)
uncertainty	3 (xsd:integer)
has abstract	2021 RR205 is an extreme trans-Neptunian object and sednoid discovered by astronomers Scott Sheppard, David Tholen, and Chad Trujillo with the Subaru Telescope at Mauna Kea Observatory on 5 September 2021. It resides beyond the outer extent of the Kuiper belt on a distant and highly eccentric orbit detached from Neptune's gravitational influence, with a large perihelion distance of 55.5 astronomical units (AU). Its large orbital semi-major axis (~1,000 AU) suggests it is potentially from the inner Oort cloud. Like 2013 SY99, 2021 RR205 lies in the 50–75 AU perihelion gap that separates the detached objects from the more distant sednoids; dynamical studies indicate that such objects in the inner edge this gap weakly experience "diffusion", or inward orbital migration due to minuscule perturbations by Neptune. 2021 RR205's heliocentric distance was 60 AU when it was discovered. It has been detected in precovery observations by the Dark Energy Survey at Cerro Tololo Observatory from as early as July 2017. It last passed perihelion in the early 1990s and is now moving outbound from the Sun. (en)
prov:wasDerivedFrom	wikipedia-en:2021_RR205?oldid=1115365747&ns=0
periapsis (km)	8.3088153365487E9 (kilometre)
page length (characters) of wiki page	6452 (xsd:nonNegativeInteger)
absolute magnitude	6.740000 (xsd:double)
apparent magnitude	24.600000 (xsd:double)
discovery date	2021-09-05 (xsd:date)

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