Cora»Occultation

2024-12-24 / UCAC4 633-014472 / (109990) 2001 SS58

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Alberto Ossola	O+	VID	M230	CH	GPS	20:06:24	20:07:56.13	20:07:56.29	20:08:48	0.08	0.08	0.16	1.7
2	show	Peter Nosal, Paula Libic	O+	VID	M200	SK	NTP	20:05:08	20:06:42.89	20:06:43.29	20:07:46	0.02	0.03	0.40	4.3

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#40 : cd9c0a60-ddb5-11f0-547e-4c24efffbcb0 [db: observed]

Using prediction cd9c0a60-ddb5-11f0-547e-4c24efffbcb0 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 = 318.8, 30.5 km
Circular diameter = 6 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] : cd9c0a60-ddb5-11f0-547e-4c24efffbcb0 [observed] Occultation Date + Time : 2024-12-24 at 20:06:50 UT +/- 0.01 min [1] Object Designation : (109990) 2001 SS58 Orbit Class : MBA Star Designation : GDR3 0220027605460078336 Star Coordinates (ICRF) : RA = 03 51 16.4948, DE = +36 24 24.638 [2] Star Magnitudes : G = 11.97 mag, RP = 11.17 mag, BP = 12.65 mag Object Magnitude : V = 19.83 mag Estimated Magnitude Drop : 7.9 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 4.0 km (src: astorb) Speed of the shadow : 10.8 km/s Elongation to Moon & Sun : 139° (sunlit = 32%), Sun = 146° Cross-track uncertainty : 2.3 mas = 4 km = 1.03 path-width (1-sig) RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#40 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : cd9c0a60-ddb5-11f0-547e-4c24efffbcb0 [observed] Occultation Date + Time : 2024-12-24 at 20:06:50 UT +/- 0.01 min [1] Object Designation : (109990) 2001 SS58 Orbit Class : MBA Star Designation : GDR3 0220027605460078336 Star Coordinates (ICRF) : RA = 03 51 16.4948, DE = +36 24 24.638 [2] Star Magnitudes : G = 11.97 mag, RP = 11.17 mag, BP = 12.65 mag Object Magnitude : V = 19.83 mag Estimated Magnitude Drop : 7.9 mag Estimated Max. Duration : 0.4 sec Object Mean Diameter : 4.0 km (src: astorb) Speed of the shadow : 10.8 km/s Elongation to Moon & Sun : 139° (sunlit = 32%), Sun = 146° Cross-track uncertainty : 2.3 mas = 4 km = 1.03 path-width (1-sig) RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#40 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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