Cora»Occultation

2025-09-20 / UCAC4 371-183433 / (57481) 2001 ST153

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O-	VID	M300	ES	GPS	23:27:45	::	::	23:31:45

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#46 : 77985130-ddb7-11f0-547e-8d3097674ee6 [db: observed]

Using prediction 77985130-ddb7-11f0-547e-8d3097674ee6 for map and profile fit

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 77985130-ddb7-11f0-547e-8d3097674ee6 [observed] Occultation Date + Time : 2025-09-20 at 23:35:06 UT +/- 0.01 min [1] Object Designation : (57481) 2001 ST153 Orbit Class : MBA Star Designation : GDR3 6838365672205464448 Star Coordinates (ICRF) : RA = 21 46 07.3295, DE = -15 56 12.471 [2] Star Magnitudes : G = 10.87 mag, RP = 10.17 mag, BP = 11.42 mag Object Magnitude : V = 19.3 mag Estimated Magnitude Drop : 8.4 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 3.4 km (src: astorb) Speed of the shadow : 8.1 km/s Elongation to Moon & Sun : 155° (sunlit = 1%), Sun = 145° Cross-track uncertainty : 1.3 mas = 1 km = 0.52 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#46 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 77985130-ddb7-11f0-547e-8d3097674ee6 [observed] Occultation Date + Time : 2025-09-20 at 23:35:06 UT +/- 0.01 min [1] Object Designation : (57481) 2001 ST153 Orbit Class : MBA Star Designation : GDR3 6838365672205464448 Star Coordinates (ICRF) : RA = 21 46 07.3295, DE = -15 56 12.471 [2] Star Magnitudes : G = 10.87 mag, RP = 10.17 mag, BP = 11.42 mag Object Magnitude : V = 19.3 mag Estimated Magnitude Drop : 8.4 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 3.4 km (src: astorb) Speed of the shadow : 8.1 km/s Elongation to Moon & Sun : 155° (sunlit = 1%), Sun = 145° Cross-track uncertainty : 1.3 mas = 1 km = 0.52 path-width (1-sig) RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#46 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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