Leucus

1997 TS25Trojan

event on 2019-12-29

31.9

Radius (km)

0.037

Geometric albedo

Positive chords

United States of America

Observed from

Size — to scalevs Pluto

LEUCUS · R 31.9 KMPLUTO · R 1188 KM

Leucus — this objectPluto — comparison

Physical properties

Radius eq. (km)31.9

Equivalent radius (km)20.5

Oblateness0.4263

Axis ratios (b/a · c/a)0.574 · 0.464

Density (g/cm³)—

ShapeTri-axial

Albedo (V)0.037 ± 0.001

Orbit — top viewheliocentric

5.29

a (AU)

0.0638

11.55

i (deg)

Occultation record

Event date2019-12-29

Observed fromUnited States of America

Positive chords14

KindMain

Delta (au)5.604

Star G mag.10.883

Object G mag.18.742

Astrometryfeeds NIMA ephemeris

Position Date (JD)2458846.6483871

RA position22 53 00.12714

Error RA·cos(δ) (mas)—

DEC position−04 20 35.6333

Error DEC (mas)—

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectNo

ReferenceMarc W. Buie et al, Planet.Sci.J, 2, 202, 2021

DOI10.3847/PSJ/ac1f9b

Link—

Comment—