Cora»Occultation

2025-04-05 / UCAC4 565-047404 / (3582) Cyrano

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Roland BONINSEGNA	O+	VID	M400	BE	GPS	22:57:24	22:58:23.62	22:58:25.06	22:59:22	0.16	0.16	1.44	11.2
2	show	Zdenek Moravec, Bohuslav Matous	O+	CCD	T600	CZ	GPS	22:56:12	22:57:09.52	22:57:11.62	22:58:11	0.10	0.10	2.10	16.4

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

2 observations found in db: sodis

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

JPL#63 : 69f55ec0-ddb6-11f0-547e-913151ffe256 [db: observed]

Using prediction 69f55ec0-ddb6-11f0-547e-913151ffe256 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 = 637.6, 13.2 km
Circular diameter = 18 km

From 2 chords (CCD,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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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 69f55ec0-ddb6-11f0-547e-913151ffe256 [observed] Occultation Date + Time : 2025-04-05 at 23:03:08 UT +/- 0.0 min [1] Object Designation : (3582) Cyrano Orbit Class : MBA Star Designation : GDR3 3989553412827418496 Star Coordinates (ICRF) : RA = 10 47 59.2261, DE = +22 52 02.311 [2] Star Magnitudes : G = 14.9 mag, RP = 14.35 mag, BP = 15.28 mag Object Magnitude : V = 16.72 mag Estimated Magnitude Drop : 2.0 mag Estimated Max. Duration : 2.0 sec Object Mean Diameter : 15.5 km (src: astorb) Speed of the shadow : 7.8 km/s Elongation to Moon & Sun : 38° (sunlit = 59%), Sun = 136° Cross-track uncertainty : 0.7 mas = 1 km = 0.08 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#63 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 69f55ec0-ddb6-11f0-547e-913151ffe256 [observed]

 Occultation Date + Time   : 2025-04-05 at 23:03:08 UT +/- 0.0 min  [1]
 Object Designation        : (3582) Cyrano
 Orbit Class               : MBA
 Star Designation          : GDR3 3989553412827418496
 Star Coordinates (ICRF)   : RA = 10 47 59.2261, DE = +22 52 02.311  [2]
 Star Magnitudes           : G = 14.9 mag, RP = 14.35 mag, BP = 15.28 mag
 Object Magnitude          : V = 16.72 mag
 Estimated Magnitude Drop  : 2.0 mag
 Estimated Max. Duration   : 2.0 sec
 Object Mean Diameter      : 15.5 km  (src: astorb)
 Speed of the shadow       : 7.8 km/s
 Elongation to Moon & Sun  : 38° (sunlit = 59%), Sun = 136°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#63
 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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