Chiron

1977 UBCentaurDust/Jet

event on 1993-11-07

89.6

Radius (km)

—

Geometric albedo

Positive chords

United States of America

Observed from

Size — to scalevs Pluto

CHIRON · R 89.6 KMPLUTO · R 1188 KM

Chiron — this objectPluto — comparison

Physical properties

Radius eq. (km)89.6 ± 6.8

Equivalent radius (km)96.7

Oblateness—

Axis ratios (b/a · c/a)—

Density (g/cm³)—

ShapeUndetermined

Albedo (V)—

Orbit — top viewheliocentric

13.64

a (AU)

0.38

6.93

i (deg)

Occultation record

Event date1993-11-07

Observed fromUnited States of America

Positive chords4

KindMain

Delta (au)9.3

Star G mag.—

Object G mag.20.82

Astrometryfeeds NIMA ephemeris

Position Date (JD)2449299.05208330

RA position10 28 08.00772

Error RA·cos(δ) (mas)2.4

DEC position03 30 36.3356

Error DEC (mas)2.2

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectYes

ReferenceRommel et al, A&A, 644, A40, 2020

DOI10.1051/0004-6361/202039054

Linkhttps://doi.org/10.1006/icar.1996.0173

CommentDave Herald and Willian Hanna reports. The two chors were too close to derive the size of the object.