(7335)

1989 JA (original) (raw)

_dynamical type, primary:_NEA, Apollo (PHA)


_orbital data, primary (osculating elements)_[JPL] :

semimajor axis a: 1.7707400687 AU
orbital period P: 2.3563533943 yr (= 860.65807725 d)
eccentricity e: 0.484138183
perihelion distance q: 0.913457189 AU
aphelion distance Q: 2.6280229481 AU
inclination i: 15.1918578°
argument of perihelion ω: 232.3058384°
ascending node Ω: 61.3009013°
mean anomaly M: 291.127021°
perihelion passage TP: 2022 Jul 04.6557936
Epoch**:** 2022 Jan 21
data arc**:** 1989-2022 (1799 obs.)
Earth MOID**:** 0.0227965 AU
Jupiter Tisserand invariant TJ: 3.924

orbital data, secondary:

semimajor axis as: 1.2 km [*E]
separation/primary radius as/rp: 4.2 [*E]
separation/Hill radius as/rH: 0.029 [*E]
orbital period Ps: 0.9 ± 0.1 d [P22c]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):

absolute mag. H: 17.59 [MPC]17.81 ± 0.26 [P22c]
slope parameter G: (0.3) [*A]
effective diameter dE: 0.6 km [*D]
geometric albedo**:** 0.448 ± 0.043 [N16c]
color index U-B: ?
color index B-V: ?
color index V-R: 0.42 ± 0.012 [P22c]
taxonomic type**:** ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 41 km [*E]

other data, primary:

diameter dp: 0.57 ± 0.11 km [B22h]
rotation period RPp: 2.5899 ± 0.00003 h [P22c]
amplitude in mag., rotational ΔM: 0.12 [P22c]
pole direction Β, λ: ? , ?

other data, secondary:

diameter ds: 0.2 km [*E]
diameter ratio ds/dp: 0.35 [*D]
component mag. difference ΔM: 2.3 [*D]
rotation period RPs: ?