Asteroids with Satellites Database--Johnston's Archive

(532037) 2013 FY27

compiled by Wm. Robert Johnston
last updated 27 May 2019

--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, scattered disk


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 58.789 AU
orbital period P: 450.759 yr
(= 164642.9 d)
eccentricity e: 0.396679
perihelion distance q: 35.4687 AU
aphelion distance Q: 82.1094 AU
inclination i: 33.08188°
argument of perihelion ω: 138.8028°
ascending node Ω: 187.09187°
mean anomaly M: 214.3649°
perihelion passage TP: 2201 Sep 04.9
Epoch: 2019 Apr 27
data arc: 2011-2018 (107 obs.)
Earth MOID: 34.5256 AU
Jupiter Tisserand invariant TJ: 5.259
Neptune Tisserand invariant TN:2.662 [*D]


orbital data, secondary:
semimajor axis as: 9800 km (separation) [S18h]
orbital period Ps: 19 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 3.2 [MPC]
3.15 ± 0.03 [S18h]
slope parameter G: (0.15) [*A]
effective diameter dE: 765 ± 80/85 km [S18h]
geometric albedo: 0.17 ± 0.045/0.03 [S18h]
color index U-B: ?
color index B-V: ?
color index V-R:0.56 ± 0.03 [S18h]
color index V-I:1.08 ± 0.05 [S18h]
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 3400000 km [*E]

other data, primary:
diameter dp: 740 ± 85/90 km [S18h]
rotation period RPp: ?
amplitude in mag., rotational ΔM: <0.06 [S18h]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 190 km [S18h]
diameter ratio ds/dp: 0.25 ± 0.03 [*D]
component mag. difference ΔM: 3 ± 0.2 [S18h]
rotation period RPs: ?

-- (532037) 2013 FY27 --discovery and notes:

Primary discovered 2013 Mar 17 from Cerro Tololo Observatory, La Serena, Chile by ?. Linked to prediscovery observations from 2011 Mar 15. Permanent number assigned 2019 May 18.

Companion discovered 2018 Jan 15 by S. S. Sheppard, Y. R. Fernandez, and A. Moullet using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2018 Aug 10 [S18i].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2018, 2019 by Wm. Robert Johnston.
Last modified 27 May 2019.
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