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Occultation event

Sedna

2003 VB12TNO> Detached O.

event on 2013-01-13

512.5

Radius (km)

—

Geometric albedo

2

Positive chords

Australia

Observed from

Size — to scalevs Pluto

SEDNA · R 512.5 KMPLUTO · R 1188 KM

Sedna — this objectPluto — comparison

Physical properties

Radius eq. (km)512.5 ± 135

Equivalent radius (km)—

Oblateness0

Axis ratios (b/a · c/a)—

Density (g/cm³)—

ShapeUndetermined

Albedo (V)—

Orbit — top viewheliocentric

484.521

a (AU)

0.843

e

11.93

i (deg)

Occultation record

Event date2013-01-13

Observed fromAustralia

Positive chords2

KindMain

Delta (au)86.2

Star G mag.181.051

Object G mag.20.711

Astrometryfeeds NIMA ephemeris

Position Date (JD)2456306.01736110

RA position03 32 44.708068

Error RA·cos(δ) (mas)0.85

DEC position06 47 18.9865

Error DEC (mas)1.2

Atmosphere

Pressure (nbar)no

Atm. gas—

Reference & provenance

Lucky Star projectYes

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

DOI10.1051/0004-6361/202039054

Link—

CommentNearby negative chords.

Sedna occultation — 2013-01-13 · SOSB / Lucky Star