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SOSB · Rio Group

Campaigns and a database of physical properties of TNOs, Centaurs, Trojans, satellites and rings from observed stellar occultations.

Web page created by Alexandre Crispim and maintained by Rio Group

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← Back to results ◎ All events of Achates

Occultation event

Achates

1991 XXTrojan

event on 2022-08-18

—

Radius (km)

—

Geometric albedo

1

Positive chords

New Zealand

Observed from

Size — to scalevs Pluto

ACHATES · R — KMPLUTO · R 1188 KM

Achates — this objectPluto — comparison

Physical properties

Radius eq. (km)> —

Equivalent radius (km)—

Oblateness—

Axis ratios (b/a · c/a)—

Density (g/cm³)—

Shape—

Albedo (V)—

Orbit — top viewheliocentric

5.18

a (AU)

0.272

e

8.917

i (deg)

Occultation record

Event date2022-08-18

Observed fromNew Zealand

Positive chords1 // radius lower limit

Kind—

Delta (au)3.26

Star G mag.13.567

Object G mag.15.434

Astrometryfeeds NIMA ephemeris

Position Date (JD)—

RA position—

Error RA·cos(δ) (mas)—

DEC position—

Error DEC (mas)—

Atmosphere

Pressure (nbar)—

Atm. gas—

Reference & provenance

Lucky Star projectNo

ReferencePreliminary

DOI—

Linkhttps://www.occultations.org.nz/planet/2022/results/plnres22.htm

Comment—

Achates occultation — 2022-08-18 · SOSB / Lucky Star