Asteroids with Satellites Database--Johnston's Archive

2015 TD144

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: 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: ?

-- 2015 TD144 --discovery and notes:

Primary discovered 2015 Oct 10 from Catalina Station, Arizona, USA by Catalina Sky Survey.

Companion discovered 2015 Oct using radar observations. Announced 2015 Oct.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2015, 2021 by Wm. Robert Johnston.
Last modified 9 October 2021.
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