(229762)

G!kunll’homdima and G!o’e!Hu (original) (raw)

Asteroids with Satellites Database--Johnston's Archive

(229762) G!kunll’homdima_and_ G!o’e!Hu

compiled by Wm. Robert Johnston
last updated 9 October 2021

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

_dynamical type, primary:_TNO, scattered disk _orbital data, primary (osculating elements)_[JPL] :semimajor axis **a:**72.7225 AUorbital period **P:**620.159 yr (= 2468536.71 d)eccentricity **e:**0.484309perihelion distance **q:**37.50233 AUaphelion distance **Q:**107.9426 AUinclination **i:**23.377938°argument of perihelion **ω:**346.8759°ascending node **Ω:**131.09416°mean anomaly **M:**344.2086°perihelion passage **TP:2046 Jul 10.21Epoch:2019 Apr 27data arc:1982-2013 (178 obs.)Earth MOID:**36.5228 AUJupiter Tisserand invariant **TJ:**6.076 Neptune Tisserand invariant **TN:**2.911 [*D] orbital data, secondary: semimajor axis **as:**6035 ± 48 km [G19a]separation/primary radius **as/rp:**19.7 [*D]separation/Hill radius **as/rH:**0.0039 [*D]orbital period **Ps:**11.31473 ± 0.00016 d [G19a]eccentricity **es:**0.0236 ± 0.0066 [G19a]inclination **is:**43.75° ± 0.38° [G19a] ascending node **Ωs:**110.6° ± 1.5° [G19a]argument of pericenter **ωs:**91° ± 18° [G19a] mean anomaly **M:**344° ± 1.4° [G19a] normalized ang. mom. αL:?

other data, system (combined): absolute mag. **H:**3.3 [MPC]3.68 ± 0.03 [G12b]slope parameter G: (0.15) [*A]effective diameter **dE:624 ± 23 km [*D]geometric albedo:**0.15 ± 0.016 [S17a]color index U-B:?color index B-V:?color index **V-R:**0.62 ± 0.05 [P10a] color index **V-I:**1.09 ± 0.05 [P10a] color index **R-J:**0.91 ± 0.08 [P10a] color index **V-J:**1.53 ± 0.08 [P10a] color index **J-H:**0.36 ± 0.11 [P10a] color index V-H:1.89 ± 0.08 [P10a] taxonomic type:?mass **m:**1.36x1020 ± 3.3x1018kg [G19a]density **ρ:**1.04 ± 0.17 g/cm3[G19a]Hill radius **rH:**1600000 km [*E] other data, primary: diameter **dp:**614 ± 15 km [S17a]color index **V-I:**1.03 ± 0.03 [G19a] rotation period **RPp:**11.05 h [T14a]amplitude in mag., rotational **ΔM:**0.03 ± 0.01 [T14a]pole direction Β, λ:? , ? other data, secondary: diameter **ds:**112 ± 76 km [S17a]diameter ratio **ds/dp:**0.182 ± 0.124 [*D]component mag. difference **ΔM:**3.242 ± 0.039 [G19a]color index **V-I:**1.8± 0.08 [G19a] rotation period RPs:?

-- (229762) G!kunll’homdima and G!o’e!Hu --discovery and notes:

Primary discovered 2007 Oct 19 from Palomar Observatory, California, USA by M. E. Schwamb, M. E. Brown, and D. Rabinowitz. Alternate designation(s): 2007 UK126. Linked to prediscovery observations from 1982 Aug 16. Permanent number assigned 2009 Dec 31.

Named 2019 Apr 06 for the Jul’hoan mythological character [MPC112434].

Companion discovered 2008 Nov 13 by W. M. Grundy, S. D. Benecchi, M. W. Buie, K. S. Noll, S. B. Porter, H. G. Roe, J. A. Stansberry, and C. A. Trujillo using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2011 Sep [G11b]. Permanent designation I G!o’e!Hu, assigned 2019 Apr 06; named for the mythological Jul’hoan horn [MPC112434].

--Links, more technical:

(229762) 2007 UK126.

--Links, less technical:

--Links to ADS abstracts:

© 2011-2019, 2021 by Wm. Robert Johnston.
Last modified 9 October 2021.
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