Cora»Occultation

2026-04-30 / UCAC4 455-051346 / (1408) Trusanda

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Kubanek	O+	VID	M200	CZ	GPS	21:37:16	21:39:06.19	21:39:12.09	21:41:16	0.040	0.040	5.90	31.9
2	show	Vaclav Priban	O+	VID	M300	CZ	GPS	21:38:01	21:39:13.01	21:39:19.51	21:40:12	0.110	0.110	6.50	35.1
3	show	Zdenek Sikac	O-	VID	T150	CZ	GPS	21:38:12	::	::	21:40:12
4	show	Tomas Janik	O-	CCD	T600	CZ	GPS	21:38:29	::	::	21:40:29
5	show	Martin Mašek	O-	VID	M200	CZ	NTP	21:38:23	::	::	21:41:01
6	show	Anna Marciniak	O-	CCD	M350	PL	NTP	21:38:47	::	::	21:40:47

UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

6 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):

JPL#66 : 34e7d7e0-33e6-11f1-6999-ab3877dbeb1a [db: asteroids]

Using prediction 34e7d7e0-33e6-11f1-6999-ab3877dbeb1a 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 = -3540.0, 10.1 km
Circular diameter = 39 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] : 34e7d7e0-33e6-11f1-6999-ab3877dbeb1a [asteroids] Occultation Date + Time : 2026-04-30 at 21:29:20 UT +/- 0.02 min [1] Object Designation : (1408) Trusanda Orbit Class : MBA Star Designation : GDR3 3798186403310572544 Star Coordinates (ICRF) : RA = 11 19 13.9007, DE = +00 48 11.121 [2] Star Magnitudes : G = 11.46 mag, RP = 11.0 mag, BP = 11.75 mag Object Magnitude : V = 16.77 mag Estimated Magnitude Drop : 5.3 mag Estimated Max. Duration : 6.0 sec Object Mean Diameter : 32.5 km (src: astorb) Speed of the shadow : 5.4 km/s Elongation to Moon & Sun : 41° (sunlit = 99%), Sun = 130° Cross-track uncertainty : 0.3 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.83 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#66 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 34e7d7e0-33e6-11f1-6999-ab3877dbeb1a [asteroids]

 Occultation Date + Time   : 2026-04-30 at 21:29:20 UT +/- 0.02 min  [1]
 Object Designation        : (1408) Trusanda
 Orbit Class               : MBA
 Star Designation          : GDR3 3798186403310572544
 Star Coordinates (ICRF)   : RA = 11 19 13.9007, DE = +00 48 11.121  [2]
 Star Magnitudes           : G = 11.46 mag, RP = 11.0 mag, BP = 11.75 mag
 Object Magnitude          : V = 16.77 mag
 Estimated Magnitude Drop  : 5.3 mag
 Estimated Max. Duration   : 6.0 sec
 Object Mean Diameter      : 32.5 km  (src: astorb)
 Speed of the shadow       : 5.4 km/s
 Elongation to Moon & Sun  : 41° (sunlit = 99%), Sun = 130°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.83 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations

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