Phaethon

eccentricity

.8896722828594053 ± 6.9157E-10

semi-major axis

1.271464620528082 au ± 1.5609E-10

perihelion distance

.1402777890078958 au ± 8.6807E-10

inclination; angle with respect to x-y ecliptic plane

22.31052712007098 deg ± 1.6261E-7

longitude of the ascending node

265.0988062128546 deg ± 3.2036E-7

argument of perihelion

322.3001681116475 deg ± 2.8328E-7

mean anomaly

301.4858241774232 deg ± 1.7885E-7

time of perihelion passage

2461285.616437580680 TDB ± 2.7171E-7

sidereal orbital period

523.6665662344041 d ± 9.6431E-8

mean motion

.6874603482683607 deg/d ± 1.2659E-10

aphelion distance

2.402651452048268 au ± 2.9496E-10

absolute magnitude

14.38

diameter

6.25 km ± 0.15

rotation period

3.604 h

geometric albedo

0.1066 ± 0.011

Tholen spectral type

F

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.