Cora»Occultation

2025-10-23 / UCAC4 502-005776 / (348) May

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Florian Signoret	O+	VID	T200	FR	GPS	23:57:08	23:59:10.040	23:59:20.040	00:00:17	0.152	0.152	10.00	90.0
2	show	Matthieu Conjat	O+	VID	T400	FR	GPS	23:58:24	23:59:07.32	23:59:17.17	00:00:00	0.060	0.040	9.85	88.6

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#80 : a23f6530-ddb8-11f0-547e-447f7f7f7866 [db: observed]

Using prediction a23f6530-ddb8-11f0-547e-447f7f7f7866 for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result:
X0,Y0 = 565.7, 18.7 km
Circular diameter = 95 km

From 2 chords (VID)

You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

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Check Johnston Archive for satellites.

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : a23f6530-ddb8-11f0-547e-447f7f7f7866 [observed] Occultation Date + Time : 2025-10-23 at 23:57:34 UT +/- 0.01 min [1] Object Designation : (348) May Orbit Class : MBA Star Designation : GDR3 3302754126058680704 Star Coordinates (ICRF) : RA = 03 51 29.9684, DE = +10 21 58.224 [2] Star Magnitudes : G = 13.04 mag, RP = 12.52 mag, BP = 13.39 mag Object Magnitude : V = 13.92 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 9.2 sec Object Mean Diameter : 82.8 km (src: astorb) Speed of the shadow : 9.0 km/s Elongation to Moon & Sun : 166° (sunlit = 6%), Sun = 151° Cross-track uncertainty : 1.3 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#80 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : a23f6530-ddb8-11f0-547e-447f7f7f7866 [observed] Occultation Date + Time : 2025-10-23 at 23:57:34 UT +/- 0.01 min [1] Object Designation : (348) May Orbit Class : MBA Star Designation : GDR3 3302754126058680704 Star Coordinates (ICRF) : RA = 03 51 29.9684, DE = +10 21 58.224 [2] Star Magnitudes : G = 13.04 mag, RP = 12.52 mag, BP = 13.39 mag Object Magnitude : V = 13.92 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 9.2 sec Object Mean Diameter : 82.8 km (src: astorb) Speed of the shadow : 9.0 km/s Elongation to Moon & Sun : 166° (sunlit = 6%), Sun = 151° Cross-track uncertainty : 1.3 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#80 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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