Cora»Occultation

2023-09-25 / UCAC4 565-039686 / (1556) Wingolfia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jiri Polak	O+	VID	M300	CZ	GPS	01:50:59	01:52:55.021	01:52:56.515	01:54:59	0.013	0.013	1.49	36.7
2	show	Michal Rottenborn	O+	VID	M254	CZ	GPS	01:50:57	01:52:55.07	01:52:56.56	01:54:57	0.02	0.02	1.49	36.7
3	show	Daniel Antuszewicz	O+	VID	M200	PL	NTP	01:51:45	01:53:13.01	01:53:14.33	01:54:44	0.03	0.03	1.32	32.5
4	show	Wojciech Burzynski	O+	VID	M254	PL	GPS	01:52:31	01:53:19.08	01:53:20.38	01:54:06	0.05	0.05	1.30	32.0
5	show	Zdenek Sikac	O-	VID	T150	CZ	NTP	01:51:01			01:55:01
6	show	Marek Zawilski	O-	VID	M200	PL	GPS	01:52:16			01:54:10

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#61 : 116a0d20-ddb4-11f0-547e-6a2e67fa4579 [db: observed]

Using prediction 116a0d20-ddb4-11f0-547e-6a2e67fa4579 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:
Size = 178 x 7 km
a',b' = 89.1, 3.6 km
X0,Y0 = 79.8, 19.7 km
Mean diameter = 36 km

From 4 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).

Check SiMDA for size and mass data.

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 116a0d20-ddb4-11f0-547e-6a2e67fa4579 [observed] Occultation Date + Time : 2023-09-25 at 01:55:28 UT +/- 0.0 min [1] Object Designation : (1556) Wingolfia Orbit Class : MBA Star Designation : GDR3 0865799543552459008 Star Coordinates (ICRF) : RA = 07 34 53.3250, DE = +22 51 49.482 [2] Star Magnitudes : G = 11.23 mag, RP = 10.6 mag, BP = 11.7 mag Object Magnitude : V = 16.8 mag Estimated Magnitude Drop : 5.6 mag Estimated Max. Duration : 1.2 sec Object Mean Diameter : 28.6 km (src: astorb) Speed of the shadow : 24.6 km/s Elongation to Moon & Sun : 170° (sunlit = 75%), Sun = 70° Cross-track uncertainty : 0.4 mas = 1 km = 0.04 path-width (1-sig) RUWE and duplicate source : 1.62 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#61 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 116a0d20-ddb4-11f0-547e-6a2e67fa4579 [observed] Occultation Date + Time : 2023-09-25 at 01:55:28 UT +/- 0.0 min [1] Object Designation : (1556) Wingolfia Orbit Class : MBA Star Designation : GDR3 0865799543552459008 Star Coordinates (ICRF) : RA = 07 34 53.3250, DE = +22 51 49.482 [2] Star Magnitudes : G = 11.23 mag, RP = 10.6 mag, BP = 11.7 mag Object Magnitude : V = 16.8 mag Estimated Magnitude Drop : 5.6 mag Estimated Max. Duration : 1.2 sec Object Mean Diameter : 28.6 km (src: astorb) Speed of the shadow : 24.6 km/s Elongation to Moon & Sun : 170° (sunlit = 75%), Sun = 70° Cross-track uncertainty : 0.4 mas = 1 km = 0.04 path-width (1-sig) RUWE and duplicate source : 1.62 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#61 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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