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Occultation event

2004 PF115

2004 PF115TNO> Hot C.
event on 2018-09-28
161
Radius (km)
Geometric albedo
1
Positive chords
Argentina
Observed from
Size — to scalevs Pluto
2004 PF115 · R 161 KMPLUTO · R 1188 KM
2004 PF115 — this objectPluto — comparison
Physical properties
Radius eq. (km)> 161
Equivalent radius (km)
Oblateness
Axis ratios (b/a · c/a)
Density (g/cm³)
ShapeUndetermined
Albedo (V)
Orbit — top viewheliocentric
Neptune 30 AU
39.3
a (AU)
0.06
e
13.4
i (deg)
Occultation record
each line — one station saw the star vanish
Event date2018-09-28
Observed fromArgentina
Positive chords1 // radius lower limit
KindMain
Delta (au)40.67
Star G mag.16.5718
Object G mag.20.849
Astrometryfeeds NIMA ephemeris
Position Date (JD)2458389.56666670
RA position23 01 47.574516
Error RA·cos(δ) (mas)0.65
DEC position−20 31 01.2497
Error DEC (mas)1.1
Atmosphere
Pressure (nbar)
Atm. gas
Reference & provenance
Lucky Star projectYes
ReferenceRommel et al, A&A, 644, A40, 2020
Link
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.
2004 PF115 occultation — 2018-09-28 · SOSB / Lucky Star