Cora»Occultation

2025-09-12 / UCAC4 421-104440 / (42712) 1998 QX28

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Andreas Schweizer	O-	VID	M250	CH	GPS	21:07:33	::	::	21:08:33

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#36 : 6b27a7c0-ddb7-11f0-547e-a88e38e67b7b [db: observed]

Using prediction 6b27a7c0-ddb7-11f0-547e-a88e38e67b7b for map and profile fit

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Event Details
Occultation UUID [and DB] : 6b27a7c0-ddb7-11f0-547e-a88e38e67b7b [observed] Occultation Date + Time : 2025-09-12 at 21:14:45 UT +/- 0.06 min [1] Object Designation : (42712) 1998 QX28 Orbit Class : MBA Star Designation : GDR3 4253982076755635712 Star Coordinates (ICRF) : RA = 18 55 40.6565, DE = -05 56 29.116 [2] Star Magnitudes : G = 13.3 mag, RP = 12.0 mag, BP = 15.26 mag Object Magnitude : V = 20.05 mag Estimated Magnitude Drop : 6.7 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 4.3 km (src: astorb) Speed of the shadow : 9.5 km/s Elongation to Moon & Sun : 131° (sunlit = 68%), Sun = 113° Cross-track uncertainty : 0.4 mas = 0 km = 0.18 path-width (1-sig) RUWE and duplicate source : 1.22 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#36 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 6b27a7c0-ddb7-11f0-547e-a88e38e67b7b [observed] Occultation Date + Time : 2025-09-12 at 21:14:45 UT +/- 0.06 min [1] Object Designation : (42712) 1998 QX28 Orbit Class : MBA Star Designation : GDR3 4253982076755635712 Star Coordinates (ICRF) : RA = 18 55 40.6565, DE = -05 56 29.116 [2] Star Magnitudes : G = 13.3 mag, RP = 12.0 mag, BP = 15.26 mag Object Magnitude : V = 20.05 mag Estimated Magnitude Drop : 6.7 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 4.3 km (src: astorb) Speed of the shadow : 9.5 km/s Elongation to Moon & Sun : 131° (sunlit = 68%), Sun = 113° Cross-track uncertainty : 0.4 mas = 0 km = 0.18 path-width (1-sig) RUWE and duplicate source : 1.22 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#36 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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