Cora»Occultation

2024-07-27 / UCAC4 462-126455 / (65590) Archeptolemos

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Anna Marciniak	O+	CCD	M400	PL	GPS	01:41:37	01:42:15.600	01:42:16.100	01:44:12	0.50	0.50	0.50	5.0
2	show	Daniel Antuszewicz	O+	VID	M200	PL	NTP	01:40:57	01:41:50.09	01:41:51.59	01:42:55	0.13	0.13	1.50	14.9
3	show	Henk de Groot	O-	VID	M350	NL	GPS	01:41:04			01:45:51
4	show	Anna Marciniak	O-	CCD	M350	PL	GPS	01:41:21			01:44:07

UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

4 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):

JPL#53 : 165602c0-ddb5-11f0-547e-89eff37fefd5 [db: observed]

Using prediction 165602c0-ddb5-11f0-547e-89eff37fefd5 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 = 197.8, 17.3 km
Circular diameter = 23 km

From 2 chords (CCD,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] : 165602c0-ddb5-11f0-547e-89eff37fefd5 [observed] Occultation Date + Time : 2024-07-27 at 01:43:04 UT +/- 0.06 min [1] Object Designation : (65590) Archeptolemos Orbit Class : JTRO Star Designation : GDR3 2655747676922334336 Star Coordinates (ICRF) : RA = 22 54 55.9885, DE = +02 13 18.367 [2] Star Magnitudes : G = 12.94 mag, RP = 12.19 mag, BP = 13.54 mag Object Magnitude : V = 19.48 mag Estimated Magnitude Drop : 6.5 mag Estimated Max. Duration : 1.3 sec Object Mean Diameter : 13.0 km (src: astorb) Speed of the shadow : 9.9 km/s Elongation to Moon & Sun : 36° (sunlit = 62%), Sun = 138° Cross-track uncertainty : 5.3 mas = 17 km = 1.32 path-width (1-sig) RUWE and duplicate source : 1.45 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#53 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : 165602c0-ddb5-11f0-547e-89eff37fefd5 [observed] Occultation Date + Time : 2024-07-27 at 01:43:04 UT +/- 0.06 min [1] Object Designation : (65590) Archeptolemos Orbit Class : JTRO Star Designation : GDR3 2655747676922334336 Star Coordinates (ICRF) : RA = 22 54 55.9885, DE = +02 13 18.367 [2] Star Magnitudes : G = 12.94 mag, RP = 12.19 mag, BP = 13.54 mag Object Magnitude : V = 19.48 mag Estimated Magnitude Drop : 6.5 mag Estimated Max. Duration : 1.3 sec Object Mean Diameter : 13.0 km (src: astorb) Speed of the shadow : 9.9 km/s Elongation to Moon & Sun : 36° (sunlit = 62%), Sun = 138° Cross-track uncertainty : 5.3 mas = 17 km = 1.32 path-width (1-sig) RUWE and duplicate source : 1.45 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#53 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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