2023-07-09 / UCAC4 373-112282 / (153) Hilda

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Andreas Schweizer	O+	VID	L107	CH	GPS	23:03:18	23:03:33.305	23:03:43.705	23:04:18	0.786	0.786	10.40	113.4
2	show	Andreas Schweizer	O+	VID	M500	CH	GPS	23:03:16	23:03:32.728	23:03:43.821	23:04:16	0.119	0.119	11.09	120.9
3	show	Andreas Tazreiter	O+	CCD	T400	AT	GPS	22:58:20	23:02:52.900	23:03:05.500	23:05:50	0.4	0.3	12.60	137.3
4	show	Wolfgang Beisker	O+	VID	M280	DE	NTP	23:02:00	23:03:13.960	23:03:26.590	23:04:20	0.43	0.43	12.63	137.7
5	show	Peter Nosal	O+	VID	M250	SK	NTP	23:00:42	23:02:26.79	23:02:39.78	23:04:42	0.17	0.17	12.99	141.6
6	show	Joachim Siegert	O+	CCD	M300	DE	GPS	23:2:51.	23:03:16.9	23:03:29.5	23:4:57.	0.5	1.0	12.60	137.3
7	show	Peter Delincak	O+	VID	M400	SK	NTP	23:00:46	23:02:33.35	23:02:47.12	23:04:56	0.17	0.17	13.77	150.1
8	show	Petr Zeleny	O+	VID	M250	CZ	GPS	23:00:00	23:02:39.0	23:02:52.0	23:05:20	1.5	1.0	13.00	141.7
9	show	Jan Manek	O+	VID	M355	CZ	GPS	23:01:13	23:02:59.1	23:03:10.5	23:05:13	0.8	0.8	11.40	124.3
10	show	Daniel Blazewicz	O+	CCD	M350	PL	GPS	23:00:33	23:02:25.99	23:02:38.29	23:04:59	0.07	0.18	12.30	134.1
11	show	Oliver Kloes	O+	CCD	M254	DE	GPS	23:02:55	23:03:40.4	23:03:49.8	23:04:55	1.4	0.8	9.40	102.5
12	show	Marcin Filipek	O+	VID	M250	PL	GPS	23:01:46	23:02:30.7	23:02:41.8	23:03:45	0.4	0.2	11.10	121.0
13	show	Leszek Benedyktowicz	O+	VID	M200	PL	GPS	23:01:41	23:02:29.29	23:02:40.55	23:04:02	0.15	0.15	11.26	122.7
14	show	Simon Kidd	O-	VID	M350	GB	GPS	23:03:48			23:05:48
15	show	Daniel Antuszewicz	O-	VID	M203	PL	NTP	23:01:47			23:03:47
16	show	Anna Marciniak	O-	CCD	M350	PL	GPS	23:02:17			23:07:18

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

16 observations found in db: sodis

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

JPL#85 : ccdc75d0-ddb3-11f0-547e-1f3cae738de8 [db: observed]

Using prediction ccdc75d0-ddb3-11f0-547e-1f3cae738de8 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 185 x 152 km a',b' = 92.6, 76.2 km X0,Y0 = -307.3, 11.7 km Mean diameter = 168 km From 13 chords (VID,CCD) Chords to ignore: Fill: Grid: Show (close) miss chords: 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] : ccdc75d0-ddb3-11f0-547e-1f3cae738de8 [observed] Occultation Date + Time : 2023-07-09 at 23:04:36 UT +/- 0.02 min [1] Object Designation : (153) Hilda Orbit Class : MBA Star Designation : GDR3 4145398775166143488 Star Coordinates (ICRF) : RA = 17 58 20.6091, DE = -15 26 14.943 [2] Star Magnitudes : G = 13.49 mag, RP = 12.53 mag, BP = 14.42 mag Object Magnitude : V = 12.8 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 15.7 sec Object Mean Diameter : 170.6 km (src: astorb) Speed of the shadow : 10.9 km/s Elongation to Moon & Sun : 106° (sunlit = 51%), Sun = 160° Cross-track uncertainty : 1.0 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.91 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#85 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia

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