Cora»Occultation

2025-09-17 / UCAC4 369-141445 / (418) Alemannia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jonas Schenker, Josef Kaeser	O+	VID	T450	CH	GPS	18:45:20	18:45:38.43	18:45:41.43	18:46:04	0.080	0.080	3.00	29.4

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#112 : 6f742910-ddb8-11f0-547e-2289fddf38db [db: observed]

Using prediction 6f742910-ddb8-11f0-547e-2289fddf38db for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-09-17, 18:45 UT (JD = 2460936.281)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5342	1.0	4.672	337°, -39°	2.457369e6	3567.3	0.0°	None	2020-10-05	not scaled	2019-10-23

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] : 6f742910-ddb8-11f0-547e-2289fddf38db [observed] Occultation Date + Time : 2025-09-17 at 18:45:20 UT +/- 0.01 min [1] Object Designation : (418) Alemannia Orbit Class : MBA Star Designation : GDR3 4099882494079529344 Star Coordinates (ICRF) : RA = 18 39 36.4869, DE = -16 19 15.856 [2] Star Magnitudes : G = 13.37 mag, RP = 12.42 mag, BP = 14.29 mag Object Magnitude : V = 14.32 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 3.5 sec Object Mean Diameter : 34.1 km (src: astorb) Speed of the shadow : 9.8 km/s Elongation to Moon & Sun : 150° (sunlit = 16%), Sun = 104° Cross-track uncertainty : 0.7 mas = 1 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#112 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 6f742910-ddb8-11f0-547e-2289fddf38db [observed] Occultation Date + Time : 2025-09-17 at 18:45:20 UT +/- 0.01 min [1] Object Designation : (418) Alemannia Orbit Class : MBA Star Designation : GDR3 4099882494079529344 Star Coordinates (ICRF) : RA = 18 39 36.4869, DE = -16 19 15.856 [2] Star Magnitudes : G = 13.37 mag, RP = 12.42 mag, BP = 14.29 mag Object Magnitude : V = 14.32 mag Estimated Magnitude Drop : 1.3 mag Estimated Max. Duration : 3.5 sec Object Mean Diameter : 34.1 km (src: astorb) Speed of the shadow : 9.8 km/s Elongation to Moon & Sun : 150° (sunlit = 16%), Sun = 104° Cross-track uncertainty : 0.7 mas = 1 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#112 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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