Arrokoth

2014 MU69TNO> Cold C.Binary

event on 2017-07-17

13.2

Radius (km)

—

Geometric albedo

Positive chords

Argentina

Observed from

Size — to scalevs Pluto

ARROKOTH · R 13.2 KMPLUTO · R 1188 KM

Arrokoth — this objectPluto — comparison

Physical properties

Radius eq. (km)13.2

Equivalent radius (km)—

Oblateness0

Axis ratios (b/a · c/a)—

Density (g/cm³)—

ShapeBinary

Albedo (V)—

Orbit — top viewheliocentric

44.624

a (AU)

0.044

2.45

i (deg)

Occultation record

Event date2017-07-17

Observed fromArgentina

Positive chords5

KindDouble

Delta (au)49.29

Star G mag.—

Object G mag.27.477

Astrometryfeeds NIMA ephemeris

Position Date (JD)2457951.65979440

RA position19 00 09.09

Error RA·cos(δ) (mas)—

DEC position-20 39 36.5

Error DEC (mas)—

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectNo

ReferenceBuie et al., DPS, 2017

DOI—

Linkhttp://pluto.jhuapl.edu/Mission/KBO-Chasers.php

CommentThe other four chords obtaind in this occultation showed a length of 7,6 km, 19,2 km, 18,0 km and 9,0 km, where the 7,6 km length chord corresponds to one of the bodies that compose this object and th