Cora»Occultation

2024-11-03 / UCAC4 370-169613 / (181) Eucharis

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Andreas Tazreiter	O+	CCD	T405	AT	GPS	17:26:25	17:29:33.5	17:29:37.1	17:34:19	0.4	0.4	3.60	91.4
2	show	Peter Nosal	O+	VID	M250	SK	NTP	17:28:27	17:29:43.100	17:29:47.600	17:31:26	0.2	0.3	4.50	114.3
3	show	Björn Kattentidt	O+	VID	M280	DE	GPS	17:27:29	17:29:24.382	17:29:28.062	17:31:09	0.386	0.386	3.68	93.5
4	show	Peter Delincak	O+	VID	M400	SK	NTP	17:27:31	17:29:40.019	17:29:43.598	17:31:41	0.656	0.656	3.58	90.9
5	show	Jiri Polak	O+	VID	M300	CZ	GPS	17:27:27	17:29:26.8	17:29:28.5	17:31:27	0.2	0.2	1.70	43.2
6	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	17:27:58	17:29:27.9	17:29:29.1	17:30:58	0.3	0.3	1.20	30.5

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

6 observations found in db: sodis

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

JPL#114 : 9c4804f0-ddb5-11f0-547e-46273672984f [db: observed]

Using prediction 9c4804f0-ddb5-11f0-547e-46273672984f 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 = 124 x 99 km
a',b' = 61.9, 49.7 km
X0,Y0 = -806.3, 20.4 km
Mean diameter = 111 km

From 6 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).
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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 9c4804f0-ddb5-11f0-547e-46273672984f [observed] Occultation Date + Time : 2024-11-03 at 17:28:40 UT +/- 0.0 min [1] Object Designation : (181) Eucharis Orbit Class : MBA Star Designation : GDR3 4183963355148988160 Star Coordinates (ICRF) : RA = 19 19 15.4134, DE = -16 03 16.082 [2] Star Magnitudes : G = 14.66 mag, RP = 14.05 mag, BP = 15.11 mag Object Magnitude : V = 14.72 mag Estimated Magnitude Drop : 0.8 mag Estimated Max. Duration : 4.2 sec Object Mean Diameter : 106.0 km (src: astorb) Speed of the shadow : 25.4 km/s Elongation to Moon & Sun : 44° (sunlit = 5%), Sun = 67° Cross-track uncertainty : 0.7 mas = 2 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#114 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 9c4804f0-ddb5-11f0-547e-46273672984f [observed]

 Occultation Date + Time   : 2024-11-03 at 17:28:40 UT +/- 0.0 min  [1]
 Object Designation        : (181) Eucharis
 Orbit Class               : MBA
 Star Designation          : GDR3 4183963355148988160
 Star Coordinates (ICRF)   : RA = 19 19 15.4134, DE = -16 03 16.082  [2]
 Star Magnitudes           : G = 14.66 mag, RP = 14.05 mag, BP = 15.11 mag
 Object Magnitude          : V = 14.72 mag
 Estimated Magnitude Drop  : 0.8 mag
 Estimated Max. Duration   : 4.2 sec
 Object Mean Diameter      : 106.0 km  (src: astorb)
 Speed of the shadow       : 25.4 km/s
 Elongation to Moon & Sun  : 44° (sunlit = 5%), Sun = 67°
 Cross-track uncertainty   : 0.7 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#114
 Note                      : FP:true

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

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