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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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Contact Lucky Star UTFPR Observatório Nacional

← Back to results ◎ All events of Antenor

Occultation event

Antenor

1977 QH1Trojan

event on 2025-09-22

—

Radius (km)

—

Geometric albedo

1

Positive chords

Poland

Observed from

Size — to scalevs Pluto

ANTENOR · R — KMPLUTO · R 1188 KM

Antenor — this objectPluto — comparison

Physical properties

Radius eq. (km)> —

Equivalent radius (km)—

Oblateness—

Axis ratios (b/a · c/a)—

Density (g/cm³)—

ShapeUndetermined

Albedo (V)—

Orbit — top viewheliocentric

5.1

a (AU)

0.017

e

6.8

i (deg)

Occultation record

Event date2025-09-22

Observed fromPoland

Positive chords1 // radius lower limit

KindMain

Delta (au)4.5208

Star G mag.13.1

Object G mag.16.4

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 projectYes

ReferencePreliminary

DOI—

Linkhttps://lesia.obspm.fr/lucky-star/occ.php?p=143870

Comment—

Antenor occultation — 2025-09-22 · SOSB / Lucky Star