Cora»Occultation

2025-09-22 / UCAC4 551-045093 / (86) Semele

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O+	VID	M200	ES	GPS	03:08:02	03:10:00.938	03:10:03.540	03:12:02	0.517	0.517	2.60	90.0

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#141 : 7c101db0-ddb7-11f0-547e-08cafd3d2f37 [db: observed]

Using prediction 7c101db0-ddb7-11f0-547e-08cafd3d2f37 for map and profile fit

Get observations as KML file (reduced site location resolution)

Sky projection (artificial light) for occ. time: 2025-09-22, 03:09 UT (JD = 2460940.631)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 5799	1.0	16.642	213°, -31°	2.457359e6	3581.6	0.0°	None	2020-10-05	not scaled	2019-10-23
# 5800	1.0	16.642	44°, -43°	2.457359e6	3581.6	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] : 7c101db0-ddb7-11f0-547e-08cafd3d2f37 [observed] Occultation Date + Time : 2025-09-22 at 03:12:47 UT +/- 0.0 min [1] Object Designation : (86) Semele Orbit Class : MBA Star Designation : GDR3 0661416240507239424 Star Coordinates (ICRF) : RA = 08 41 29.3269, DE = +20 04 45.028 [2] Star Magnitudes : G = 14.68 mag, RP = 14.2 mag, BP = 14.99 mag Object Magnitude : V = 14.44 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 3.5 sec Object Mean Diameter : 120.6 km (src: astorb) Speed of the shadow : 34.6 km/s Elongation to Moon & Sun : 55° (sunlit = 0%), Sun = 52° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#141 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 7c101db0-ddb7-11f0-547e-08cafd3d2f37 [observed] Occultation Date + Time : 2025-09-22 at 03:12:47 UT +/- 0.0 min [1] Object Designation : (86) Semele Orbit Class : MBA Star Designation : GDR3 0661416240507239424 Star Coordinates (ICRF) : RA = 08 41 29.3269, DE = +20 04 45.028 [2] Star Magnitudes : G = 14.68 mag, RP = 14.2 mag, BP = 14.99 mag Object Magnitude : V = 14.44 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 3.5 sec Object Mean Diameter : 120.6 km (src: astorb) Speed of the shadow : 34.6 km/s Elongation to Moon & Sun : 55° (sunlit = 0%), Sun = 52° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#141 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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