(612141) 1999 XY143 (original) (raw)
_dynamical type, primary:_TNO, Cubewano
_orbital data, primary (osculating elements)_[JPL] :
| semimajor axis a: | 43.224 AU |
|---|---|
| orbital period P: | 284.181 yr (= 103797.0 d) |
| eccentricity e: | 0.07770 |
| perihelion distance q: | 39.866 AU |
| aphelion distance Q: | 46.582 AU |
| inclination i: | 7.15229° |
| argument of perihelion ω: | 83.02° |
| ascending node Ω: | 255.39896° |
| mean anomaly M: | 108.28° |
| perihelion passage TP: | 1928 Nov 29 |
| Epoch**:** | 2014 May 23 |
| data arc**:** | 1999-2008 (26 obs.) |
| Earth MOID**:** | 38.8633 AU |
| Jupiter Tisserand invariant TJ: | 5.823 |
| Neptune Tisserand invariant TN: | 3.07 [*D] |
orbital data, secondary:
| semimajor axis as: | 2670 ± 70 km (separation) [G12b] |
|---|---|
| separation/primary radius as/rp: | 25 [*E] |
| separation/Hill radius as/rH: | 0.0040 [*E] |
| orbital period Ps: | 14 d [*E] |
| eccentricity es: | ? |
| normalized ang. mom. αL: | ? |
other data, system (combined):
| absolute mag. H: | 6 [MPC]6.006 ± 0.565 [JPL] |
|---|---|
| slope parameter G: | (0.15) [*A] |
| effective diameter dE: | 278 km [*E] |
| geometric albedo**:** | (0.09 ) [*A] |
| color index U-B: | ? |
| color index B-V: | ? |
| taxonomic type**:** | ? |
| mass m: | ? |
| density ρ: | (1 g/cm3) [*A] |
| Hill radius rH: | 660000 km [*E] |
other data, primary:
| diameter dp: | 213 km [*E] |
|---|---|
| rotation period RPp: | ? |
| amplitude in mag., rotational ΔM: | ? |
| pole direction Β, λ: | ? , ? |
other data, secondary:
| diameter ds: | 179 km [*E] |
|---|---|
| diameter ratio ds/dp: | 0.839 [N09b] |
| component mag. difference ΔM: | 0.38 [N09b] |
| rotation period RPs: | ? |