Asteroids with Satellites Database--Johnston's Archive
(523794)
2015 RR245
compiled by Wm. Robert Johnston
last updated
19 February 2023
--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, 2:9 resonance
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
82.9235 AU
| |
orbital period P: |
755.135 yr
(= 275813 d)
| |
eccentricity e: |
0.587366
| |
perihelion distance q: |
34.2171 AU
| |
aphelion distance Q: |
131.63 AU
| |
inclination i: |
7.525122°
| |
argument of perihelion ω: |
259.8272°
| |
ascending node Ω: |
211.83407°
| |
mean anomaly M: |
326.9455°
| |
perihelion passage TP: |
2092 Jun 26.60
| |
Epoch: |
2023 Feb 25
| |
data arc: |
2004-2022
(257 obs.)
| |
Earth MOID: |
33.2416 AU
| |
Jupiter Tisserand invariant TJ: |
6.469
|
| Neptune Tisserand invariant TN: | 3.027 [*D] |
orbital data, secondary:
|
semimajor axis as: |
?
| |
orbital period Ps: |
?
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
4.01
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
694
km [*E]
| |
geometric albedo: |
(0.09
) [*A]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
1500000 km [*E]
|
other data, primary:
|
diameter dp: |
608
km [*E]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
334
km [*E]
| |
diameter ratio ds/dp: |
0.55
± 0.1
[*D]
| |
component mag. difference ΔM: |
1.3
± 0.45
[F22b]
| |
rotation period RPs: |
?
| |
|
|
--
(523794) 2015 RR245
--discovery and notes:
Primary discovered
2015 Sep 09
from
Mauna Kea Observatory, Hawaii, USA
by
Outer Solar System Origins Survey.
Linked to prediscovery observations from 2004 Oct 15.
Permanent number assigned 2018 Sep 25.
Companion discovered
-
by Outer Solar System Origins Survey
using
adaptive optics telescope
observations from CFHT Telescope, Mauna Kea, Hawaii, USA.
Announced
2019 Sep [N19b].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2023
by Wm. Robert Johnston.
Last modified
19 February 2023.
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