Cora»Occultation

2023-07-08 / UCAC4 379-068328 / (1161) Thessalia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Matthieu Conjat	O+	VID	T400	FR	GPS	21:12:57	21:14:40.56	21:14:42.74	21:15:37	0.10	0.10	2.18	7.4
2	show	Alberto Ossola	O+	VID	M230	CH	GPS	21:12:58	21:14:04.06	21:14:10.90	21:15:26	0.64	1.12	6.84	23.3
3	show	Gregor Krannich	O+	VID	M350	DE	GPS	21:12:01	21:13:33.049	21:13:38.050	21:15:01	0.21	0.21	5.00	17.0
4	show	Jiri Kubanek	O-	VID	M303	CZ	GPS	21:11:10			21:15:12
5	show	Anna Marciniak	O-	CCD	M350	PL	GPS	21:11:03			21:14:06

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

5 observations found in db: sodis

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

JPL#82 : d229e1d0-ddb3-11f0-547e-b10ecadf565b [db: observed]

Using prediction d229e1d0-ddb3-11f0-547e-b10ecadf565b 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:
Ellipse profile fit was not successful. Trying circular fit.

Circular diameter = 23 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).

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Check Johnston Archive for satellites.

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : d229e1d0-ddb3-11f0-547e-b10ecadf565b [observed] Occultation Date + Time : 2023-07-08 at 21:42:33 UT +/- 0.03 min [1] Object Designation : (1161) Thessalia Orbit Class : MBA Star Designation : GDR3 6310346206767189760 Star Coordinates (ICRF) : RA = 14 56 06.0570, DE = -14 20 11.992 [2] Star Magnitudes : G = 14.0 mag, RP = 13.36 mag, BP = 14.47 mag Object Magnitude : V = 17.09 mag Estimated Magnitude Drop : 3.2 mag Estimated Max. Duration : 9.0 sec Object Mean Diameter : 30.4 km (src: astorb) Speed of the shadow : 3.4 km/s Elongation to Moon & Sun : 136° (sunlit = 63%), Sun = 119° Cross-track uncertainty : 0.3 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.13 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#82 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : d229e1d0-ddb3-11f0-547e-b10ecadf565b [observed] Occultation Date + Time : 2023-07-08 at 21:42:33 UT +/- 0.03 min [1] Object Designation : (1161) Thessalia Orbit Class : MBA Star Designation : GDR3 6310346206767189760 Star Coordinates (ICRF) : RA = 14 56 06.0570, DE = -14 20 11.992 [2] Star Magnitudes : G = 14.0 mag, RP = 13.36 mag, BP = 14.47 mag Object Magnitude : V = 17.09 mag Estimated Magnitude Drop : 3.2 mag Estimated Max. Duration : 9.0 sec Object Mean Diameter : 30.4 km (src: astorb) Speed of the shadow : 3.4 km/s Elongation to Moon & Sun : 136° (sunlit = 63%), Sun = 119° Cross-track uncertainty : 0.3 mas = 0 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.13 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#82 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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