Cora»Occultation

2025-12-06 / UCAC4 558-045827 / (3933) Portugal

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O+	VID	M300	ES	GPS	00:35:10	00:36:11.529	00:36:15.682	00:37:10	0.302	0.302	4.15	23.2

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#67 : cebdc6b0-ddb8-11f0-547e-4d1dff77c1ab [db: observed]

Using prediction cebdc6b0-ddb8-11f0-547e-4d1dff77c1ab for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-12-06, 00:36 UT (JD = 2461015.525)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 2353	1.5	8.561	313°, 43°	2.4496e6	11415.5	0.0°	None	2018-07-19	not scaled	2018-07-18
# 2354	1.5	8.561	133°, 46°	2.4496e6	11415.5	0.0°	None	2018-07-19	not scaled	2018-07-18

Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : cebdc6b0-ddb8-11f0-547e-4d1dff77c1ab [observed] Occultation Date + Time : 2025-12-06 at 00:23:53 UT +/- 0.01 min [1] Object Designation : (3933) Portugal Orbit Class : MBA Star Designation : GDR3 0676211818727120640 Star Coordinates (ICRF) : RA = 08 20 46.4524, DE = +21 31 10.825 [2] Star Magnitudes : G = 14.93 mag, RP = 14.17 mag, BP = 15.56 mag Object Magnitude : V = 18.34 mag Estimated Magnitude Drop : 3.5 mag Estimated Max. Duration : 1.9 sec Object Mean Diameter : 10.4 km (src: astorb) Speed of the shadow : 5.6 km/s Elongation to Moon & Sun : 34° (sunlit = 98%), Sun = 132° Cross-track uncertainty : 0.4 mas = 0 km = 0.08 path-width (1-sig) RUWE and duplicate source : 0.94 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : cebdc6b0-ddb8-11f0-547e-4d1dff77c1ab [observed] Occultation Date + Time : 2025-12-06 at 00:23:53 UT +/- 0.01 min [1] Object Designation : (3933) Portugal Orbit Class : MBA Star Designation : GDR3 0676211818727120640 Star Coordinates (ICRF) : RA = 08 20 46.4524, DE = +21 31 10.825 [2] Star Magnitudes : G = 14.93 mag, RP = 14.17 mag, BP = 15.56 mag Object Magnitude : V = 18.34 mag Estimated Magnitude Drop : 3.5 mag Estimated Max. Duration : 1.9 sec Object Mean Diameter : 10.4 km (src: astorb) Speed of the shadow : 5.6 km/s Elongation to Moon & Sun : 34° (sunlit = 98%), Sun = 132° Cross-track uncertainty : 0.4 mas = 0 km = 0.08 path-width (1-sig) RUWE and duplicate source : 0.94 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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