Asteroids with Satellites Database--Johnston's Archive
(556068)
2014 JR80
compiled by Wm. Robert Johnston
last updated
18 September 2026
--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:
TNO, plutino
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
39.22858 AU
| |
orbital period P: |
245.7039 yr (= 89743.3 d)
| |
eccentricity e: |
0.0941669
| |
perihelion distance q: |
35.53454 AU
| |
aphelion distance Q: |
42.92261 AU
| |
inclination i: |
15.419588°
| |
argument of perihelion ω: |
300.8264°
| |
ascending node Ω: |
119.179875°
| |
mean anomaly M: |
257.1771°
| |
perihelion passage TP: |
2096 Aug 12.4
| |
Epoch: |
2026 Jun 09
| |
data arc: |
2010-2025
(314 obs.)
| |
Earth MOID: |
34.5733 AU
| |
Jupiter Tisserand invariant TJ: |
5.403
|
| Neptune Tisserand invariant TN: | 2.959 [*D] |
orbital data, secondary:
|
semimajor axis as: |
24300
km
(separation)
[P26i]
| |
separation/primary radius as/rp: | 130 [*E] | |
separation/Hill radius as/rH: | 0.023 [*E] | |
orbital period Ps: |
150
d [*E]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
4.93
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
505
km [*E]
| |
geometric albedo: |
(0.074
) [*A]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
1100000 km [*E]
|
other data, primary:
|
diameter dp: |
367
km [*E]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
346
km [*E]
| |
diameter ratio ds/dp: |
0.942
± 0.004
[*D]
| |
component mag. difference ΔM: |
0.13
± 0.01
[P26i]
| |
rotation period RPs: |
?
| |
|
|
--
(556068) 2014 JR80
--discovery and notes:
Primary discovered
2014 May 06
from
Haleakala, Hawaii, USA
by
PanSTARRS 1 program.
Linked to prediscovery observations from 2010 Jun 21.
Permanent number assigned 2021 Jun 01.
Companion discovered
2026 Jun 13
by B. Proudfoot, W. Grundy, D. Ragozzine, B. Holler, F. L. Rommel, E. Fernandez-Valenzuela, and J. M. Gomez-Limon
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2026 Sep 14 [P26i].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2026
by Wm. Robert Johnston.
Last modified
18 September 2026.
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