2015 TD144

--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, Apollo orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.9847719 AU orbital period P: 2.796238 yr (= 1021.3259 d) eccentricity e: 0.7593723 perihelion distance q: 0.47759112 AU aphelion distance Q: 3.491953 AU inclination i: 1.647537° argument of perihelion ω: 104.4235° ascending node Ω: 25.42137° mean anomaly M: 356.2439° perihelion passage TP: 2021 Jul 11.656 Epoch: 2021 Jul 01 data arc: 2015 Oct 10-22 (125 obs.) Earth MOID: 0.0013204 AU Jupiter Tisserand invariant TJ: 3.423 orbital data, secondary: semimajor axis as: ? orbital period Ps: ? eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 22.6 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 0.09 km [W19e] geometric albedo: 0.2 [*D] color index U-B: ? color index B-V: ? taxonomic type: Q (SMASSII) [D19a] mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 3 km [*E] other data, primary: diameter dp: 0.09 km [W19e] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: ? diameter ratio ds/dp: ? component mag. difference ΔM: ? rotation period RPs: ?