Mathilde

eccentricity

.2643478593847533 ± 9.2877E-10

semi-major axis

2.646901224932316 au ± 7.654E-10

perihelion distance

1.947198552118577 au ± 2.5973E-9

inclination; angle with respect to x-y ecliptic plane

6.74046762132457 deg ± 4.9106E-8

longitude of the ascending node

179.4942079651114 deg ± 4.4462E-7

argument of perihelion

157.5640226350525 deg ± 5.0217E-7

mean anomaly

273.5338756003301 deg ± 3.6143E-7

time of perihelion passage

2461578.288315718905 TDB ± 1.7205E-6

sidereal orbital period

1572.914185793263 d ± 6.8226E-7

mean motion

.2288745331764189 deg/d ± 9.9275E-11

aphelion distance

3.346603897746054 au ± 9.6773E-10

absolute magnitude

10.35

diameter

52.8 km

GM

0.00689 km^3/s^2 ± 0.00030

bulk density

1.3 g/cm^3 ± 0.2

rotation period

417.7 h

geometric albedo

0.0436 ± 0.004

SMASSII spectral type

Cb

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.