Pallas

eccentricity

.2307000995648547 ± 5.7536E-9

semi-major axis

2.769559010737709 au ± 1.7736E-9

perihelion distance

2.130621471209779 au ± 1.5815E-8

inclination; angle with respect to x-y ecliptic plane

34.93279321851542 deg ± 6.9364E-7

longitude of the ascending node

172.8866193357694 deg ± 1.2984E-6

argument of perihelion

310.9699161652136 deg ± 2.4001E-6

mean anomaly

254.2496521742734 deg ± 2.4573E-6

time of perihelion passage

2461695.031164382680 TDB ± 1.1582E-5

sidereal orbital period

1683.504809564834 d ± 1.6172E-6

mean motion

.2138396029251949 deg/d ± 2.0541E-10

aphelion distance

3.408496550265638 au ± 2.1828E-9

absolute magnitude

4.12

magnitude slope

0.11

diameter

513 km ± 6

extent

568x532x448 km ± 12

GM

13.63 km^3/s^2 ± 0.18

bulk density

2.89 g/cm^3 ± 0.08

rotation period

7.8132214 h ± 0.000002

pole direction

33/-3 ± 5

geometric albedo

0.155

B-V

0.635 ± 0.031

U-B

0.284 ± 0.018

Tholen spectral type

B

SMASSII spectral type

B

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.