Cora»Occultation

2024-12-29 / UCAC4 589-021820 / (2509) Chukotka

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Carles Schnabel	O+	VID	M400	ES	GPS	02:19:27	02:21:26.25	02:21:27.8	02:23:14	0.16	0.2	1.55	18.8
2	show	Antoni Selva, Carlos Perello	O+	VID	M500	ES	GPS	02:20:26	02:21:25.560	02:21:27.170	02:22:26	0.10	0.10	1.61	19.5

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#67 : 64154c80-ddb2-11f0-547e-2b571feeadfd [db: observed]

JPL#67 : 64157390-ddb2-11f0-547e-5096fbe914e6 [db: observed]

Using prediction 64154c80-ddb2-11f0-547e-2b571feeadfd 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 = 128.8, 17.3 km
Circular diameter = 22 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] : 64154c80-ddb2-11f0-547e-2b571feeadfd [observed] Occultation Date + Time : 2024-12-29 at 02:26:31 UT +/- 0.0 min [1] Object Designation : (2509) Chukotka Orbit Class : MBA Star Designation : GDR3 3443030919042502784 Star Coordinates (ICRF) : RA = 05 49 05.6430, DE = +27 44 38.860 [2] Star Magnitudes : G = 14.48 mag, RP = 13.94 mag, BP = 14.85 mag Object Magnitude : V = 16.48 mag Estimated Magnitude Drop : 2.2 mag Estimated Max. Duration : 0.7 sec Object Mean Diameter : 8.8 km (src: astorb) Speed of the shadow : 12.1 km/s Elongation to Moon & Sun : 168° (sunlit = 4%), Sun = 169° Cross-track uncertainty : 0.3 mas = 0 km = 0.04 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 64154c80-ddb2-11f0-547e-2b571feeadfd [observed] Occultation Date + Time : 2024-12-29 at 02:26:31 UT +/- 0.0 min [1] Object Designation : (2509) Chukotka Orbit Class : MBA Star Designation : GDR3 3443030919042502784 Star Coordinates (ICRF) : RA = 05 49 05.6430, DE = +27 44 38.860 [2] Star Magnitudes : G = 14.48 mag, RP = 13.94 mag, BP = 14.85 mag Object Magnitude : V = 16.48 mag Estimated Magnitude Drop : 2.2 mag Estimated Max. Duration : 0.7 sec Object Mean Diameter : 8.8 km (src: astorb) Speed of the shadow : 12.1 km/s Elongation to Moon & Sun : 168° (sunlit = 4%), Sun = 169° Cross-track uncertainty : 0.3 mas = 0 km = 0.04 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#67 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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