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Stellar Occultation by (536) Merapi on 2026-05-07 (20:12:59 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
 Occultation UUID [and db] : 59e93770-33cb-11f1-6999-2e02bfcfb981 [asteroids]

 Occultation Date + Time   : 2026-05-07 at 20:12:59 UT +/- 0.0 min  [1]
 Object Designation        : (536) Merapi
 Star Designation          : GDR3 0899642889411359872
 Star Coordinates (ICRF)   : RA = 07 26 03.7437, DE = +37 53 45.267  [2]
 Star Magnitudes           : G = 13.28 mag, RP = 12.82 mag, BP = 13.57 mag
 Object Magnitude          : V = 14.78 mag
 Estimated Magnitude Drop  : 1.8 mag
 Estimated Max. Duration   : 5.2 sec
 Speed of the shadow       : 28.9 km/s
 Object Mean Diameter      : 151.4 km  (src: astorb) => apparent = 52 mas
 Apparent Motion           : 0.5917 arcs/min @ PA = 106 deg
 Horizontal Parallax       : 2.1750 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 166° (sunlit = 70%), Sun = 61°
 Cross-track uncertainty   : 0.7 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.14 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#143
 Note                      : FP:true

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


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