Cora»Occultation

2025-08-13 / UCAC4 476-081562 / (160037) 1998 YG6

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Carsten Ziolek	O+	VID	M356	CH	GPS	22:41:42	22:42:11.869	22:42:12.239	22:42:42	0.020	0.020	0.37	5.2
2	show	Martin Gutekunst	O+	VID	L280	DE	GPS	22:41:36	22:42:05.418	22:42:05.784	22:42:36	0.023	0.023	0.37	5.2
3	show	Daniel Antuszewicz	O-	VID	M300	PL	NTP	22:40:30	::	::	22:42:30

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#37 : 447ef510-ddb7-11f0-547e-bbddf9ff2c0e [db: observed]

Using prediction 447ef510-ddb7-11f0-547e-bbddf9ff2c0e 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 = 178.6, 24.2 km
Circular diameter = 8 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] : 447ef510-ddb7-11f0-547e-bbddf9ff2c0e [observed] Occultation Date + Time : 2025-08-13 at 22:48:10 UT +/- 0.02 min [1] Object Designation : (160037) 1998 YG6 Orbit Class : MBA Star Designation : GDR3 4284494482105195648 Star Coordinates (ICRF) : RA = 18 26 55.8068, DE = +05 03 59.726 [2] Star Magnitudes : G = 12.89 mag, RP = 12.51 mag, BP = 13.12 mag Object Magnitude : V = 20.62 mag Estimated Magnitude Drop : 7.7 mag Estimated Max. Duration : 0.3 sec Object Mean Diameter : 4.0 km (src: astorb) Speed of the shadow : 14.0 km/s Elongation to Moon & Sun : 101° (sunlit = 75%), Sun = 129° Cross-track uncertainty : 1.0 mas = 2 km = 0.55 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#37 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 447ef510-ddb7-11f0-547e-bbddf9ff2c0e [observed]

 Occultation Date + Time   : 2025-08-13 at 22:48:10 UT +/- 0.02 min  [1]
 Object Designation        : (160037) 1998 YG6
 Orbit Class               : MBA
 Star Designation          : GDR3 4284494482105195648
 Star Coordinates (ICRF)   : RA = 18 26 55.8068, DE = +05 03 59.726  [2]
 Star Magnitudes           : G = 12.89 mag, RP = 12.51 mag, BP = 13.12 mag
 Object Magnitude          : V = 20.62 mag
 Estimated Magnitude Drop  : 7.7 mag
 Estimated Max. Duration   : 0.3 sec
 Object Mean Diameter      : 4.0 km  (src: astorb)
 Speed of the shadow       : 14.0 km/s
 Elongation to Moon & Sun  : 101° (sunlit = 75%), Sun = 129°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.55 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#37
 Note                      : FP:true

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

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