Cora»Occultation

2023-12-06 / UCAC4 635-024942 / (466) Tisiphone

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Alberto Ossola	O+	VID	M230	CH	GPS	17:22:48	17:24:15.23	17:24:18.23	17:25:19	0.04	0.04	3.00	45.3
2	show	Stefano Sposetti	O+	VID	M420	CH	GPS	17:21:00	17:24:14.45	17:24:16.67	17:27:00	0.08	0.04	2.22	33.5

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#132 : e5b06290-ddb0-11f0-547e-6211dfbfe7a1 [db: observed]

JPL#132 : e5b06290-ddb0-11f0-547e-012dba9fe6d7 [db: observed]

JPL#132 : 44f9d1c0-ddb4-11f0-547e-1dfdd7df34c0 [db: observed]

JPL#132 : 44f9d1c0-ddb4-11f0-547e-a484ff7b8e49 [db: observed]

Using prediction e5b06290-ddb0-11f0-547e-6211dfbfe7a1 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 = 4468.7, 7835.7 km
Circular diameter = 92 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).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : e5b06290-ddb0-11f0-547e-6211dfbfe7a1 [observed] Occultation Date + Time : 2023-12-06 at 17:24:21 UT +/- 0.01 min [1] Object Designation : (466) Tisiphone Orbit Class : MBA Star Designation : GDR3 0184392399244464384 Star Coordinates (ICRF) : RA = 05 22 47.5988, DE = +36 57 36.909 [2] Star Magnitudes : G = 11.78 mag, RP = 11.14 mag, BP = 12.26 mag Object Magnitude : V = 13.43 mag Estimated Magnitude Drop : 1.9 mag Estimated Max. Duration : 7.7 sec Object Mean Diameter : 115.5 km (src: astorb) Speed of the shadow : 15.1 km/s Elongation to Moon & Sun : 97° (sunlit = 36%), Sun = 164° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#132 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and DB] : e5b06290-ddb0-11f0-547e-6211dfbfe7a1 [observed] Occultation Date + Time : 2023-12-06 at 17:24:21 UT +/- 0.01 min [1] Object Designation : (466) Tisiphone Orbit Class : MBA Star Designation : GDR3 0184392399244464384 Star Coordinates (ICRF) : RA = 05 22 47.5988, DE = +36 57 36.909 [2] Star Magnitudes : G = 11.78 mag, RP = 11.14 mag, BP = 12.26 mag Object Magnitude : V = 13.43 mag Estimated Magnitude Drop : 1.9 mag Estimated Max. Duration : 7.7 sec Object Mean Diameter : 115.5 km (src: astorb) Speed of the shadow : 15.1 km/s Elongation to Moon & Sun : 97° (sunlit = 36%), Sun = 164° Cross-track uncertainty : 1.0 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#132 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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