Occultation event

Sedna

2003 VB12TNO> Detached O.

event on 2013-01-13

512.5

Radius (km)

—

Geometric albedo

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

11.93

i (deg)

Occultation record

Event date2013-01-13

Observed fromAustralia

Positive chords2

KindMain

Delta (au)86.2

Star G mag.18.073

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

Where on the skyThe published position of this event, against the constellations.

Chart data: d3-celestial (BSD-3-Clause), from Hipparcos / Yale BSC and the IAU figures. Position J2000.

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.