Cora»Occultation

2024-09-21 / UCAC4 474-128290 / (14456) 1993 FK20

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	22:11:31	22:13:01.29	22:13:01.71	22:14:32	0.09	0.09	0.42	5.5
2	show	Karel Halir	O+	VID	M500	CZ	GPS	22:11:32	22:13:01.35	22:13:02.09	22:13:32	0.04	0.10	0.74	9.8
3	show	Zdenek Sikac	O-	VID	T150	CZ	NTP	22:11:01			22:15:01

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

3 observations found in db: sodis

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

JPL#57 : 75dc0d20-ddb5-11f0-547e-882ff5bf9290 [db: observed]

Using prediction 75dc0d20-ddb5-11f0-547e-882ff5bf9290 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 = 2598.8, 36.9 km
Circular diameter = 12 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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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 75dc0d20-ddb5-11f0-547e-882ff5bf9290 [observed] Occultation Date + Time : 2024-09-21 at 22:16:41 UT +/- 0.01 min [1] Object Designation : (14456) 1993 FK20 Orbit Class : MBA Star Designation : GDR3 2743610510092689408 Star Coordinates (ICRF) : RA = 23 50 23.7623, DE = +04 38 34.176 [2] Star Magnitudes : G = 13.62 mag, RP = 12.85 mag, BP = 14.25 mag Object Magnitude : V = 17.55 mag Estimated Magnitude Drop : 4.0 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 6.3 km (src: astorb) Speed of the shadow : 13.2 km/s Elongation to Moon & Sun : 53° (sunlit = 80%), Sun = 175° Cross-track uncertainty : 0.3 mas = 0 km = 0.06 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#57 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 75dc0d20-ddb5-11f0-547e-882ff5bf9290 [observed] Occultation Date + Time : 2024-09-21 at 22:16:41 UT +/- 0.01 min [1] Object Designation : (14456) 1993 FK20 Orbit Class : MBA Star Designation : GDR3 2743610510092689408 Star Coordinates (ICRF) : RA = 23 50 23.7623, DE = +04 38 34.176 [2] Star Magnitudes : G = 13.62 mag, RP = 12.85 mag, BP = 14.25 mag Object Magnitude : V = 17.55 mag Estimated Magnitude Drop : 4.0 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 6.3 km (src: astorb) Speed of the shadow : 13.2 km/s Elongation to Moon & Sun : 53° (sunlit = 80%), Sun = 175° Cross-track uncertainty : 0.3 mas = 0 km = 0.06 path-width (1-sig) RUWE and duplicate source : 0.97 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#57 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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