Cora»Occultation

2025-09-20 / UCAC4 636-006420 / (74422) 1999 AP28

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Matthieu Conjat	O+	VID	M200	FR	GPS	00:25:16	00:25:51.99	00:25:52.57	00:28:21	0.085	0.085	0.58	5.5
2	show	Florian Signoret	O-	VID	T200	FR	GPS	00:24:29	::	::	00:27:26

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):

JPL#51 : 7a80f230-ddb7-11f0-547e-9848bbfe4900 [db: observed]

Using prediction 7a80f230-ddb7-11f0-547e-9848bbfe4900 for map and profile fit

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 7a80f230-ddb7-11f0-547e-9848bbfe4900 [observed] Occultation Date + Time : 2025-09-20 at 00:23:09 UT +/- 0.01 min [1] Object Designation : (74422) 1999 AP28 Orbit Class : MBA Star Designation : GDR3 0342498116866866816 Star Coordinates (ICRF) : RA = 01 54 19.3420, DE = +37 08 14.930 [2] Star Magnitudes : G = 7.69 mag, RP = 6.28 mag, BP = 10.03 mag Object Magnitude : V = 19.66 mag Estimated Magnitude Drop : 12.0 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 5.1 km (src: astorb) Speed of the shadow : 9.5 km/s Elongation to Moon & Sun : 113° (sunlit = 3%), Sun = 132° Cross-track uncertainty : 1.2 mas = 2 km = 0.45 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#51 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 7a80f230-ddb7-11f0-547e-9848bbfe4900 [observed] Occultation Date + Time : 2025-09-20 at 00:23:09 UT +/- 0.01 min [1] Object Designation : (74422) 1999 AP28 Orbit Class : MBA Star Designation : GDR3 0342498116866866816 Star Coordinates (ICRF) : RA = 01 54 19.3420, DE = +37 08 14.930 [2] Star Magnitudes : G = 7.69 mag, RP = 6.28 mag, BP = 10.03 mag Object Magnitude : V = 19.66 mag Estimated Magnitude Drop : 12.0 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 5.1 km (src: astorb) Speed of the shadow : 9.5 km/s Elongation to Moon & Sun : 113° (sunlit = 3%), Sun = 132° Cross-track uncertainty : 1.2 mas = 2 km = 0.45 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#51 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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