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Asteroids with Satellites Database--Johnston's Archive

2015 TD144

compiled by Wm. Robert Johnston
last updated9 October 2021

--Orbital and physical data--

(Seethis page for definitions of quantities; source codes in brackets, seethis 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 axisa:1.9847719 AU
orbital periodP:2.796238 yr
(= 1021.3259 d)
eccentricitye:0.7593723
perihelion distanceq:0.47759112 AU
aphelion distanceQ:3.491953 AU
inclinationi:1.647537°
argument of perihelionω:104.4235°
ascending nodeΩ:25.42137°
mean anomalyM:356.2439°
perihelion passageTP:2021 Jul 11.656
Epoch:2021 Jul 01
data arc:2015 Oct 10-22(125 obs.)
Earth MOID:0.0013204 AU
Jupiter Tisserand invariantTJ:3.423

orbital data, secondary:

semimajor axisas:?
orbital periodPs:?
eccentricityes:?
normalized ang. mom.αL:?
other data, system (combined):
absolute mag.H:22.6[MPC]
slope parameterG:(0.15) [*A]
effective diameterdE:0.09 km [W19e]
geometric albedo:0.2[*D]
color indexU-B:?
color indexB-V:?
taxonomic type:Q (SMASSII) [D19a]
massm:?
densityρ:(1.6 g/cm3) [*A]
Hill radiusrH:3 km [*E]

other data, primary:

diameterdp:0.09 km [W19e]
rotation periodRPp:?
amplitude in mag., rotationalΔM:?
pole directionΒ, λ:?,?

other data, secondary:

diameterds:?
diameter ratiods/dp:?
component mag. differenceΔM:?
rotation periodRPs:?

-- 2015 TD144 --discovery and notes:

Primary discovered2015 Oct 10from Catalina Station, Arizona, USAby Catalina Sky Survey.

Companion discovered2015 Octusingradar observations.Announced2015 Oct.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


©2015, 2021by Wm. Robert Johnston.
Last modified9 October 2021.
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