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2025-03-28 / UCAC4 563-050380 / (31542) 1999 DR3

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Arnaud Leroy O+ VID M300 FR GPS 02:24:28 02:25:56.03 02:25:57.5 02:27:28 0.13 0.4 1.47 15.7
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#59 : b776d550-8b8e-11ef-78cd-92a0dedffb44 [db: asteroids]

Using prediction b776d550-8b8e-11ef-78cd-92a0dedffb44 for map and profile fit

Get observations as KML file (reduced site location resolution)


Map with groundtrack and observer stations

Occ by (31542) 1999 DR3 on 2025-03-28

Unavailable
100 km

Event Details
 Occultation UUID [and DB] : b776d550-8b8e-11ef-78cd-92a0dedffb44 [asteroids]

 Occultation Date + Time   : 2025-03-28 at 02:30:18 UT +/- 0.0 min  [1]
 Object Designation        : (31542) 1999 DR3
 Orbit Class               : MBA
 Star Designation          : GDR3 3980510376366107136
 Star Coordinates (ICRF)   : RA = 11 31 21.3112, DE = +22 30 07.221  [2]
 Star Magnitudes           : G = 13.98 mag, RP = 13.33 mag, BP = 14.47 mag
 Object Magnitude          : V = 16.81 mag
 Estimated Magnitude Drop  : 2.9 mag
 Estimated Max. Duration   : 1.1 sec
 Object Mean Diameter      : 11.7 km  (src: astorb)
 Speed of the shadow       : 10.7 km/s
 Elongation to Moon & Sun  : 162° (sunlit = 3%), Sun = 151°
 Cross-track uncertainty   : 1.2 mas = 1 km = 0.15 path-width (1-sig)
 RUWE and duplicate source : 4.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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Aladin Sky Atlas
11 31 21.311 +22 30 7.22
FoV: 29.96'
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