Cora»Occultation

2023-12-25 / UCAC4 530-028683 / (10065) Greglisk

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Gerard VAUDESCAL	O+	VID	T250	FR	GPS	19:22:57	19:23:37.84	19:23:38.59	19:24:55	0.13	0.13	0.75	7.9
2	show	Andrea Manna	O+	VID	M200	CH	GPS	19:18:55	19:22:52.52	19:22:53.96	19:25:05	0.16	0.16	1.44	15.1
3	show	Stefano Sposetti	O+	VID	M420	CH	GPS	19:20:00	19:22:51.56	19:22:53.26	19:24:00	0.10	0.10	1.70	17.8
4	show	Alberto Ossola	O-	VID	M230	CH	GPS	19:21:40			19:24:14

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#61 : 50aecc50-ddb4-11f0-547e-c610f0f74c82 [db: observed]

Using prediction 50aecc50-ddb4-11f0-547e-c610f0f74c82 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:
Size = 19 x 4 km
a',b' = 9.5, 1.8 km
X0,Y0 = 651.9, 30.6 km
Mean diameter = 8 km

From 3 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).

Check SiMDA for size and mass data.

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 50aecc50-ddb4-11f0-547e-c610f0f74c82 [observed] Occultation Date + Time : 2023-12-25 at 19:17:33 UT +/- 0.0 min [1] Object Designation : (10065) Greglisk Orbit Class : MBA Star Designation : GDR3 3357261899612046080 Star Coordinates (ICRF) : RA = 06 31 18.9064, DE = +15 55 45.119 [2] Star Magnitudes : G = 12.52 mag, RP = 12.09 mag, BP = 12.79 mag Object Magnitude : V = 16.37 mag Estimated Magnitude Drop : 3.9 mag Estimated Max. Duration : 0.8 sec Object Mean Diameter : 8.2 km (src: astorb) Speed of the shadow : 10.5 km/s Elongation to Moon & Sun : 22° (sunlit = 98%), Sun = 172° Cross-track uncertainty : 0.3 mas = 0 km = 0.04 path-width (1-sig) RUWE and duplicate source : 1.14 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#61 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 50aecc50-ddb4-11f0-547e-c610f0f74c82 [observed]

 Occultation Date + Time   : 2023-12-25 at 19:17:33 UT +/- 0.0 min  [1]
 Object Designation        : (10065) Greglisk
 Orbit Class               : MBA
 Star Designation          : GDR3 3357261899612046080
 Star Coordinates (ICRF)   : RA = 06 31 18.9064, DE = +15 55 45.119  [2]
 Star Magnitudes           : G = 12.52 mag, RP = 12.09 mag, BP = 12.79 mag
 Object Magnitude          : V = 16.37 mag
 Estimated Magnitude Drop  : 3.9 mag
 Estimated Max. Duration   : 0.8 sec
 Object Mean Diameter      : 8.2 km  (src: astorb)
 Speed of the shadow       : 10.5 km/s
 Elongation to Moon & Sun  : 22° (sunlit = 98%), Sun = 172°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.14 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations

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