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Asteroids with Satellites Database--Johnston's Archive
(511551) 2014 UD225
compiled by Wm. Robert Johnston
last updated17 August 2019--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:TNO, Cubewano
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 43.2812 AU | | orbital periodP: | 284.75 yr
(= 104003.5 d) | | eccentricitye: | 0.13251 | | perihelion distanceq: | 37.546 AU | | aphelion distanceQ: | 49.0165 AU | | inclinationi: | 3.65764° | | argument of perihelionω: | 294.321° | | ascending nodeΩ: | 343.3171° | | mean anomalyM: | 98.416° | | perihelion passageTP: | 1941 Jun 22.9 | | Epoch: | 2019 Apr 27 | | data arc: | 2000-2017(66 obs.) | | Earth MOID: | 36.5308 AU | | Jupiter Tisserand invariantTJ: | 5.826 |
orbital data, secondary: | semimajor axisas: | 21400± 600 km (separation) [F17a] | | separation/primary radiusas/rp: | 230 [*E] | | separation/Hill radiusas/rH: | 0.039 [*E] | | orbital periodPs: | 460d [*E] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 6.7[MPC]
7 ± 0.5 [G19c] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 201 km [*E] | | geometric albedo: | (0.09) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 550000 km [*E] |
other data, primary: | diameterdp: | 190 km [*E] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 66km [*E] | | diameter ratiods/dp: | 0.35± 0.01 [F17a] | | component mag. differenceΔM: | 2.3 [*D] | | rotation periodRPs: | ? | |
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--(511551) 2014 UD225 --discovery and notes:
Primary discovered2013 Aug 08from Mauna Kea Observatory, Hawaii, USAby Outer Solar System Origins Survey.Linked to prediscovery observations from 2000 Sep 21.Permanent number assigned 2018 Jan 31.
Companion discovered by Fraser, W. C., et al.usingadaptive optics telescope observations.Announced2017 Apr 04 [F17a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©2019by Wm. Robert Johnston.
Last modified17 August 2019.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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