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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