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Occultation event

2001 QU277

2001 QU277Trojan
event on 2020-02-08
Radius (km)
Geometric albedo
1
Positive chords
United States of America
Observed from
Size — to scalevs Pluto
2001 QU277 · R KMPLUTO · R 1188 KM
2001 QU277 — this objectPluto — comparison
Physical properties
Radius eq. (km)> —
Equivalent radius (km)
Oblateness
Axis ratios (b/a · c/a)
Density (g/cm³)
ShapeUndetermined
Albedo (V)
Orbit — top viewheliocentric
Neptune 30 AU
5.2
a (AU)
0.032
e
17.5
i (deg)
Occultation record
each line — one station saw the star vanish
Event date2020-02-08
Observed fromUnited States of America
Positive chords1 // radius lower limit
KindMain
Delta (au)4.705
Star G mag.15.4
Object G mag.18.6
Astrometryfeeds NIMA ephemeris
Position Date (JD)
RA position
Error RA·cos(δ) (mas)
DEC position
Error DEC (mas)
Atmosphere
Pressure (nbar)
Atm. gas
Reference & provenance
Lucky Star projectYes
Referencepreliminary
DOI
CommentReport by Chris Anderson
2001 QU277 occultation — 2020-02-08 · SOSB / Lucky Star