2021 CJ16

--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: NEA, Amor orbital data, primary (osculating elements) [JPL] : semimajor axis a: 2.031171106 AU orbital period P: 2.89486268 yr (= 1057.348593 d) eccentricity e: 0.43931834 perihelion distance q: 1.13884039 AU aphelion distance Q: 2.923501819 AU inclination i: 6.5785026° argument of perihelion ω: 223.524308° ascending node Ω: 34.929864° mean anomaly M: 333.017543° perihelion passage TP: 2024 Jun 18.249621 Epoch: 2024 Mar 31 data arc: 2014-2024 (274 obs.) Earth MOID: 0.146871 AU Jupiter Tisserand invariant TJ: 3.677 orbital data, secondary: semimajor axis as: 0.53 km [*E] separation/primary radius as/rp: 3.4 [*E] separation/Hill radius as/rH: 0.019 [*E] orbital period Ps: 0.6783 ± 0.0008 d [P24d] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 20.1 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 0.32 km [*E] geometric albedo: (0.16 ) [*A] color index U-B: ? color index B-V: ? color index V-R: 0.41 ± 0.02 [P24d] taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 28 km [*E] other data, primary: diameter dp: 0.32 km [*E] rotation period RPp: 16.28 ± 0.02 h [P24d] amplitude in mag., rotational ΔM: 0.22 [P24d] amplitude in mag., mutual events ΔM: 0.63 ±0.07 [P24d] pole direction Β, λ: ? , ? other data, secondary: diameter ds: ? diameter ratio ds/dp: ? component mag. difference ΔM: ? rotation period RPs: ?