Occultation event
Makemake
event on 2011-04-23
751
Radius (km)
0.77
Geometric albedo
7
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
e
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
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)<12
Atm. gasN2, CH4
Reference & provenance
Lucky Star projectYes
ReferenceRommel et al, A&A, 644, A40, 2020
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.