Cora»Occultation

2023-05-03 / UCAC4 584-027327 / (917) Lyka

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jan Manek	O+	VID	M356	CZ	GPS	21:11:59	21:13:59.156	21:13:59.684	21:15:59	0.024	0.024	0.53	18.9
2	show	Jiri Kubanek	O+	VID	M200	CZ	GPS	21:12:11	21:13:58.47	21:13:59.25	21:16:00	0.12	0.12	0.78	27.8
3	show	Zdenek Moravec, Bohuslav Matous	O-	CCD	M432	CZ	GPS	21:12:58			21:14:57

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#73 : 97c35210-ddb3-11f0-547e-dac4ffbba1ed [db: observed]

Using prediction 97c35210-ddb3-11f0-547e-dac4ffbba1ed 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 = -420.2, 13.4 km
Circular diameter = 29 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] : 97c35210-ddb3-11f0-547e-dac4ffbba1ed [observed] Occultation Date + Time : 2023-05-03 at 21:12:17 UT +/- 0.0 min [1] Object Designation : (917) Lyka Orbit Class : MBA Star Designation : GDR3 3432935031477483520 Star Coordinates (ICRF) : RA = 06 18 01.9359, DE = +26 44 50.135 [2] Star Magnitudes : G = 12.52 mag, RP = 12.07 mag, BP = 12.8 mag Object Magnitude : V = 17.19 mag Estimated Magnitude Drop : 4.7 mag Estimated Max. Duration : 0.8 sec Object Mean Diameter : 28.1 km (src: astorb) Speed of the shadow : 35.6 km/s Elongation to Moon & Sun : 106° (sunlit = 96%), Sun = 51° Cross-track uncertainty : 0.1 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.24 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#73 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 97c35210-ddb3-11f0-547e-dac4ffbba1ed [observed] Occultation Date + Time : 2023-05-03 at 21:12:17 UT +/- 0.0 min [1] Object Designation : (917) Lyka Orbit Class : MBA Star Designation : GDR3 3432935031477483520 Star Coordinates (ICRF) : RA = 06 18 01.9359, DE = +26 44 50.135 [2] Star Magnitudes : G = 12.52 mag, RP = 12.07 mag, BP = 12.8 mag Object Magnitude : V = 17.19 mag Estimated Magnitude Drop : 4.7 mag Estimated Max. Duration : 0.8 sec Object Mean Diameter : 28.1 km (src: astorb) Speed of the shadow : 35.6 km/s Elongation to Moon & Sun : 106° (sunlit = 96%), Sun = 51° Cross-track uncertainty : 0.1 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.24 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#73 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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