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Asteroids with Satellites Database--Johnston's Archive

(469610) 2004 HF79

compiled by Wm. Robert Johnston
last updated17 August 2019

--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:TNO, Cubewano


orbital data, primary (osculating elements)[JPL]:

semimajor axisa:43.6229 AU
orbital periodP:288.12 yr
(= 105237.6 d)
eccentricitye:0.035037
perihelion distanceq:42.09451 AU
aphelion distanceQ:45.1514 AU
inclinationi:1.4849°
argument of perihelionω:192.085°
ascending nodeΩ:76.6478°
mean anomalyM:339.632°
perihelion passageTP:2035 Aug 15.0
Epoch:2019 Apr 27
data arc:2004-2015(48 obs.)
Earth MOID:41.078 AU
Jupiter Tisserand invariantTJ:5.905

orbital data, secondary:

semimajor axisas:3820± 50 km (separation) [G19c]
separation/primary radiusas/rp:41 [*E]
separation/Hill radiusas/rH:0.006 [*E]
orbital periodPs:29d [*E]
eccentricityes:?
normalized ang. mom.αL:?
other data, system (combined):
absolute mag.H:6.3[MPC]
6.6 ± 0.5 [G19c]
slope parameterG:(0.15) [*A]
effective diameterdE:242 km [*E]
geometric albedo:(0.09) [*A]
color indexU-B:?
color indexB-V:?
taxonomic type:?
massm:?
densityρ:(1 g/cm3) [*A]
Hill radiusrH:630000 km [*E]

other data, primary:

diameterdp:188 km [*E]
rotation periodRPp:?
amplitude in mag., rotationalΔM:?
pole directionΒ, λ:?,?

other data, secondary:

diameterds:153km [*E]
diameter ratiods/dp:0.81 [*D]
component mag. differenceΔM:0.45 [G19c]
rotation periodRPs:?

--(469610) 2004 HF79 --discovery and notes:

Primary discovered2004 Apr 24from Mauna Kea Observatory, Hawaii, USAby B. Gladman.Permanent number assigned 2016 Aug 18.

Companion discovered2019 Jun 07usingHubble Space Telescope observations.Announced2019 Aug [G19c].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


©2019by Wm. Robert Johnston.
Last modified17 August 2019.
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