Itokawa

eccentricity

.2801776414987972 ± 2.0795E-9

semi-major axis

1.324052284342771 au ± 4.1248E-9

perihelion distance

.9530824380945183 au ± 1.5401E-9

inclination; angle with respect to x-y ecliptic plane

1.620940810523569 deg ± 2.6923E-7

longitude of the ascending node

69.07449749929083 deg ± 6.1561E-6

argument of perihelion

162.8409022415483 deg ± 6.1449E-6

mean anomaly

170.653905937934 deg ± 7.4549E-6

time of perihelion passage

2460936.702994476837 TDB ± 1.0557E-5

sidereal orbital period

556.4884171058932 d ± 2.6004E-6

mean motion

.6469137342916093 deg/d ± 3.023E-9

aphelion distance

1.695022130591023 au ± 5.2805E-9

absolute magnitude

19.26

diameter

0.33 km

extent

0.535x0.294x0.209 km ± 0.001

GM

2.1e-9 km^3/s^2 ± 0.063e-9

bulk density

1.9 g/cm^3 ± 0.13

rotation period

12.132 h

pole direction

90.53/-66.30 ± 3.9

thermal inertia

700 J/m^2/s^0.5/K ± 200

SMASSII spectral type

S(IV)

Published JPL orbital elements describe their stated epoch; they are not current positions. Small-body diameters can be effective/model-dependent sizes, not spherical shapes. Missing measurements remain unavailable. Pluto’s diameter uses the New Horizons reference rather than an empty SBDB field. Orbital epoch: JD 2461200.5 TDB.