Makemake

2005 FY9TNO> Hot C.

event on 2011-04-23

751

Radius (km)

0.77

Geometric albedo

Positive chords

Brazil, Chile

Observed from

Size — to scalevs Pluto

MAKEMAKE · R 751 KMPLUTO · R 1188 KM

Makemake — this objectPluto — comparison

Physical properties

Radius eq. (km)751 ± 45

Equivalent radius (km)732.8 ± 46

Oblateness0.05 ± 0.02

Axis ratios (b/a · c/a)—

Density (g/cm³)1.7 ± 0.3

ShapeMaclaurin

Albedo (V)0.77 ± 0.03

Orbit — top viewheliocentric

45.67

a (AU)

0.15

28.98

i (deg)

Occultation record

Event date2011-04-23

Observed fromBrazil, Chile

Positive chords7

KindMain

Delta (au)51.5

Star G mag.—

Object G mag.—

Astrometryfeeds NIMA ephemeris

Position Date (JD)2455674.56666670

RA position12 36 11.39029

Error RA·cos(δ) (mas)1.1

DEC position28 11 10.3245

Error DEC (mas)1.1

Atmosphere

Pressure (nbar)<12

Atm. gasN2, CH4

Reference & provenance

Lucky Star projectYes

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

DOI10.1051/0004-6361/202039054

Linkhttps://www.nature.com/articles/nature11597

CommentThis object has an ambiguous solution where the center of it could be north or south of the observed chord. In this case we assumed the north position.