Cora»Occultation

2025-11-13 / UCAC4 567-008272 / (1172) Aneas

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Daniel Blazewicz	O+	VID	M350	PL	GPS	19:29:15	19:33:17.15	19:33:20.05	19:37:30	0.100	0.100	2.90	52.8
2	show	Leszek Benedyktowicz	O+	VID	M200	PL	GPS	19:30:03	19:33:17.900	19:33:23.370	19:35:00	0.300	0.180	5.47	99.6
3	show	Marcin Filipek	O+	VID	M250	PL	GPS	19:32:49	19:33:16.30	19:33:21.55	19:33:49	0.050	0.050	5.25	95.5
4	show	Matthieu Conjat	O-	VID	T400	FR	GPS	19:32:57	::	::	19:35:11
5	show	Stefano Sposetti	O-	VID	M420	CH	GPS	19:31:00	::	::	19:38:00
6	show	Gregor Krannich	O-	VID	M350	DE	GPS	19:30:01	::	::	19:37:10
7	show	Wolfgang Beisker	O-	VID	M280	DE	GPS	19:28:40	::	::	19:36:00

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

7 observations found in db: sodis

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

JPL#126 : bd4bae60-ddb8-11f0-547e-fec3abff74fe [db: observed]

Using prediction bd4bae60-ddb8-11f0-547e-fec3abff74fe 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 = 127 x 93 km
a',b' = 63.5, 46.7 km
X0,Y0 = 1700.6, 22.8 km
Mean diameter = 109 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.

Check Johnston Archive for satellites.

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : bd4bae60-ddb8-11f0-547e-fec3abff74fe [observed] Occultation Date + Time : 2025-11-13 at 19:31:49 UT +/- 0.03 min [1] Object Designation : (1172) Aneas Orbit Class : JTRO Star Designation : GDR3 0064175371275313280 Star Coordinates (ICRF) : RA = 03 50 34.9183, DE = +23 14 30.440 [2] Star Magnitudes : G = 13.86 mag, RP = 13.36 mag, BP = 14.19 mag Object Magnitude : V = 15.36 mag Estimated Magnitude Drop : 1.7 mag Estimated Max. Duration : 7.8 sec Object Mean Diameter : 142.8 km (src: astorb) Speed of the shadow : 18.2 km/s Elongation to Moon & Sun : 100° (sunlit = 34%), Sun = 171° Cross-track uncertainty : 0.7 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#126 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : bd4bae60-ddb8-11f0-547e-fec3abff74fe [observed]

 Occultation Date + Time   : 2025-11-13 at 19:31:49 UT +/- 0.03 min  [1]
 Object Designation        : (1172) Aneas
 Orbit Class               : JTRO
 Star Designation          : GDR3 0064175371275313280
 Star Coordinates (ICRF)   : RA = 03 50 34.9183, DE = +23 14 30.440  [2]
 Star Magnitudes           : G = 13.86 mag, RP = 13.36 mag, BP = 14.19 mag
 Object Magnitude          : V = 15.36 mag
 Estimated Magnitude Drop  : 1.7 mag
 Estimated Max. Duration   : 7.8 sec
 Object Mean Diameter      : 142.8 km  (src: astorb)
 Speed of the shadow       : 18.2 km/s
 Elongation to Moon & Sun  : 100° (sunlit = 34%), Sun = 171°
 Cross-track uncertainty   : 0.7 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#126
 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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