2025-09-20 / Other J225602.22+065859.7 / (42755) 1998 ST61
# OBS Observer Occ Meth. Instr. CC
TSRC UT1 UT2 UT3 UT4 UT2E UT3E Dur. Chrd
1
show Stefan Meister
O+
VID
M200
CH
GPS
20:24:10
20:24:31.854
20:24:32.706
20:24:55
0.012
0.012
0.85
10.0
2
show Andreas Schweizer
O-
VID
M250
CH
GPS
20:24:04
::
::
20:25:04
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
More 2 observations found in db: sodis
Available (probably) matching predictions (click on the link to switch):
Using prediction 77afd0d0-ddb7-11f0-547e-6dddeb7fadd3 for map and profile fit
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Event Details
Occultation UUID [and DB] : 77afd0d0-ddb7-11f0-547e-6dddeb7fadd3 [observed]
Occultation Date + Time : 2025-09-20 at 20:26:21 UT +/- 0.01 min [1]
Object Designation : (42755) 1998 ST61
Orbit Class : MBA
Star Designation : GDR3 2712028550412358912
Star Coordinates (ICRF) : RA = 22 56 02.2080, DE = +06 58 59.571 [2]
Star Magnitudes : G = 10.48 mag, RP = 10.02 mag, BP = 10.78 mag
Object Magnitude : V = 18.29 mag
Estimated Magnitude Drop : 7.8 mag
Estimated Max. Duration : 0.4 sec
Object Mean Diameter : 4.9 km (src: astorb)
Speed of the shadow : 11.8 km/s
Elongation to Moon & Sun : 167° (sunlit = 1%), Sun = 164°
Cross-track uncertainty : 1.0 mas = 1 km = 0.28 path-width (1-sig)
RUWE and duplicate source : 1.07 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#50
Note : FP:true
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
(If error 404: link not valid which means no data available)
