Asteroids with Satellites Database--Johnston's Archive

2015 NV28

compiled by Wm. Robert Johnston
last updated 8 May 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: NEA, Amor


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 3.164823142 AU
orbital period P: 5.63031082 yr
(= 2056.471028 d)
eccentricity e: 0.595133064
perihelion distance q: 1.28133225 AU
aphelion distance Q: 5.048314036 AU
inclination i: 24.779885°
argument of perihelion ω: 314.94868°
ascending node Ω: 213.374876°
mean anomaly M: 342.7763819°
perihelion passage TP: 2026 Feb 27.388532
Epoch: 2025 Nov 21
data arc: 2015-2026 (248 obs.)
Earth MOID: 0.365705 AU
Jupiter Tisserand invariant TJ: 2.782


orbital data, secondary:
semimajor axis as: 2.8 km [*E]
separation/primary radius as/rp:7.2 [*E]
separation/Hill radius as/rH:0.036 [*E]
orbital period Ps: 2.05 ± 0.008 d [P26c]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 17.98 [MPC]
17.89 ± 0.05 [P26c]
slope parameter G: 0.12 [P26c]
effective diameter dE: 0.84 km [*E]
geometric albedo: (0.16 ) [*A]
color index U-B: ?
color index B-V: ?
color index V-R:0.385 ± 0.015 [P26c]
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 80 km [*E]

other data, primary:
diameter dp: 0.79 km [*D]
axial ratios a/b, b/c:1.1, ? [*E]
rotation period RPp: 3.582 ± 0.002 h [P26c]
amplitude in mag., rotational ΔM: 0.08 [P26c]
amplitude in mag., mutual events ΔM:0.14 [P26c]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: >0.29 km [*D]
diameter ratio ds/dp: >0.37 [P26c]
component mag. difference ΔM: <2.16 [*D]
rotation period RPs: ?

-- 2015 NV28 --discovery and notes:

Primary discovered 2015 Jul 08 from Mount Lemmon, Arizona, USA by Mount Lemmon Survey.

Companion discovered 2026 Mar 16 by P. Pravec, P. Kusnirak, K. Hornoch, H. Kucakova, K. Honkova, A. Galad, and T. Lister using lightcurve observations from La Silla station, European Southern Observatory, Chile; CPT node, LCO Network, Sutherland, South Africa. Announced 2026 May 04 [P26c].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2026 by Wm. Robert Johnston.
Last modified 8 May 2026.
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