Cora»Occultation

2024-12-02 / UCAC4 527-002349 / (173785) 2001 SQ82

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Delincak	O+	VID	M400	SK	NTP	19:49:57	19:51:59.028	19:51:59.906	19:54:07	0.01	0.01	0.88	3.3
2	show	Marcin Filipek	O+	VID	M250	PL	GPS	19:51:31	19:51:34.22	19:51:35.22	19:51:39	0.03	0.03	1.00	3.8

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#32 : b63dae00-ddb5-11f0-547e-b49479efe7de [db: observed]

Using prediction b63dae00-ddb5-11f0-547e-b49479efe7de 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 = 1252.3, 48.4 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] : b63dae00-ddb5-11f0-547e-b49479efe7de [observed] Occultation Date + Time : 2024-12-02 at 20:05:57 UT +/- 0.23 min [1] Object Designation : (173785) 2001 SQ82 Orbit Class : MBA Star Designation : GDR3 2591324915533618176 Star Coordinates (ICRF) : RA = 01 19 45.5244, DE = +15 12 39.641 [2] Star Magnitudes : G = 12.15 mag, RP = 11.57 mag, BP = 12.52 mag Object Magnitude : V = 20.23 mag Estimated Magnitude Drop : 8.1 mag Estimated Max. Duration : 0.7 sec Object Mean Diameter : 2.5 km (src: astorb) Speed of the shadow : 3.8 km/s Elongation to Moon & Sun : 115° (sunlit = 3%), Sun = 133° Cross-track uncertainty : 18.5 mas = 26 km = 10.65 path-width (1-sig) RUWE and duplicate source : 23.49 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#32 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : b63dae00-ddb5-11f0-547e-b49479efe7de [observed] Occultation Date + Time : 2024-12-02 at 20:05:57 UT +/- 0.23 min [1] Object Designation : (173785) 2001 SQ82 Orbit Class : MBA Star Designation : GDR3 2591324915533618176 Star Coordinates (ICRF) : RA = 01 19 45.5244, DE = +15 12 39.641 [2] Star Magnitudes : G = 12.15 mag, RP = 11.57 mag, BP = 12.52 mag Object Magnitude : V = 20.23 mag Estimated Magnitude Drop : 8.1 mag Estimated Max. Duration : 0.7 sec Object Mean Diameter : 2.5 km (src: astorb) Speed of the shadow : 3.8 km/s Elongation to Moon & Sun : 115° (sunlit = 3%), Sun = 133° Cross-track uncertainty : 18.5 mas = 26 km = 10.65 path-width (1-sig) RUWE and duplicate source : 23.49 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#32 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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