Chariklo

1997 CU26CentaurRing

event on 2015-04-26

124.8

Radius (km)

0.042

Geometric albedo

Positive chords

Uruguay

Observed from

3D modelChariklo · interactive

Downloads 3.8 MB

Model of the occulting body, not a product of this event — a reconstruction, not a direct measurement. The values below are what this occultation measured.

Size — to scalevs Pluto

CHARIKLO · R 124.8 KMPLUTO · R 1188 KM

Chariklo — this objectPluto — comparison

Physical properties

Radius eq. (km)> —

Equivalent radius (km)124.8 ± 3.0

Oblateness—

Axis ratios (b/a · c/a)0.94 · 0.689

Density (g/cm³)1.55 ± 0.08

ShapeTri-axial

Albedo (V)0.042 ± 1

Orbit — top viewheliocentric

15.84

a (AU)

0.17

23.36

i (deg)

Occultation record

Event date2015-04-26

Observed fromUruguay

Positive chords1 // radius lower limit

KindRing/Dust

Delta (au)14.49

Star G mag.—

Object G mag.—

Astrometryfeeds NIMA ephemeris

Position Date (JD)2457138.591643510

RA position18 10 45.9676

Error RA·cos(δ) (mas)—

DEC position-36 38 56.608

Error DEC (mas)—

Where on the skyThe published position of this event, against the constellations.

Chart data: d3-celestial (BSD-3-Clause), from Hipparcos / Yale BSC and the IAU figures. Position J2000.

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectYes

ReferenceBérard, D. et al., AJ, 2017

DOI10.3847/1538-3881/aa830d

Linkhttps://iopscience.iop.org/article/10.3847/1538-3881/aa830d/meta

CommentOnly the rings were detected.