(90482)
Orcus and Vanth (original) (raw)
_dynamical type, primary:_TNO, plutino
_orbital data, primary (osculating elements)_[JPL] :
| semimajor axis a: | 39.4597 AU |
|---|---|
| orbital period P: | 247.873825088923 yr (= 90537.8 d) |
| eccentricity e: | 0.21843 |
| perihelion distance q: | 30.8406 AU |
| aphelion distance Q: | 48.0789 AU |
| inclination i: | 20.552009° |
| argument of perihelion ω: | 73.3952° |
| ascending node Ω: | 268.48161° |
| mean anomaly M: | 172.5691° |
| perihelion passage TP: | 1896 Feb 10.94 |
| Epoch**:** | 2014 Dec 09 |
| data arc**:** | 1951-2014 (430 obs.) |
| Earth MOID**:** | 29.8932 AU |
| Jupiter Tisserand invariant TJ: | 5.164 |
| Neptune Tisserand invariant TN: | 2.856 [*D] |
orbital data, secondary:
| semimajor axis as: | 8999.8 ± 9.1 km [G19b] |
|---|---|
| separation/primary radius as/rp: | 19.8 [*D] |
| separation/Hill radius as/rH: | 0.0041 [*D] |
| orbital period Ps: | 9.539154 ± 0.00002 d [G19b] |
| eccentricity es: | 0.00091 ± 0.00053 [G19b] |
| inclination is: | 105.03° ± 0.18° [G19b] |
| ascending node Ωs: | 53.49° ± 0.33° [G19b] |
| argument of pericenter ωs: | 328° ± 51° [G19b] |
| mean anomaly M: | 188.52° ± 0.39° [G19b] |
| Epoch**:** | 2006 Sep 21.5 |
| normalized ang. mom. αL: | ? |
other data, system (combined):
| absolute mag. H: | 2.2 [MPC]2.31 ± 0.03 [F13a] |
|---|---|
| slope parameter G: | 0.28 [B09b] |
| effective diameter dE: | 1012 ± 45 km [*D] |
| geometric albedo**:** | 0.231 ± 0.018/0.011 [F13a] |
| color index U-B: | ? |
| color index B-V: | 0.68 [D05b] |
| color index V-R: | 0.37 ± 0.04 [D05b] |
| color index B-R: | 1.05 [D05b] |
| color index V-I: | 0.74 ± 0.04 [D05b] |
| color index R-J: | 0.82 ± 0.05 [P10a] |
| color index V-J: | 1.08 ± 0.04 [D05b] |
| color index J-H: | 0.19 ± 0.09 [P10a] |
| color index V-H: | 1.21 ± 0.05 [D05b] |
| taxonomic type**:** | BB (G-mode) [P10a] |
| mass m: | 6.35x1020 ± 1.9x1018kg [G19b] |
| density ρ: | 1.4 ± 0.2 g/cm3[B18f] |
| Hill radius rH: | 2200000 km [*D] |
other data, primary:
| diameter dp: | 910 ± 45 km [B18f] |
|---|---|
| rotation period RPp: | 13.188 ± 0 h [R07a] |
| amplitude in mag., rotational ΔM: | 0.04 ± 0.01 [T10a] |
| pole direction Β, λ: | ? , ? |
other data, secondary:
| diameter ds: | 443 ± 10 km [S19b] |
|---|---|
| diameter ratio ds/dp: | 0.487 ± 0.026 [*D] |
| component mag. difference ΔM: | 2.61 ± 0.07 [B09b] |
| rotation period RPs: | 229 h [R14a] |