Collaborative Occultation Resources and Archive (CORA)

2024-08-10 / UCAC4 422-117391 / (1574) Meyer

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Pierre Le Cam	O+	VID	M500	FR	GPS	20:59:17	21:00:44.65	21:00:49.20	21:02:17	0.018	0.019	4.55	52.3
2	show	Lionel Rousselot	O+	VID	M200	FR	GPS	20:59:00	21:00:37.57	21:00:41.60	21:02:00	0.15	0.2	4.03	46.3
3	show	Lionel Rousselot	O+	VID	M250	FR	GPS	20:59:02	21:00:36.12	21:00:40.73	21:02:3.	0.1	0.1	4.61	53.0
4	show	Jean-Louis Dumont	O+	VID	M400	FR	GPS	20:59:12	21:00:43.20	21:00:48.79	21:03:12	0.07	0.15	5.59	64.3
5	show	Andreas Eberle	O+	VID	M300	DE	GPS	20:59:9.	20:59:50.790	20:59:54.490	21:0:17.	0.05	0.05	3.70	42.6
6	show	Zdenek Sikac	O+	VID	T150	CZ	NTP	20:57:02	20:59:26.68	20:59:29.92	21:01:00	0.13	0.13	3.24	37.3
7	show	Michal Rottenborn	O+	VID	M254	CZ	GPS	20:57:24	20:59:23.40	20:59:25.85	21:01:24	0.05	0.05	2.45	28.2
8	show	Jiri Kubanek	O+	VID	M303	CZ	GPS	20:57:51	20:59:22.05	20:59:22.80	21:00:51	0.08	0.08	0.75	8.6
9	show	Karel Halir	O+	VID	M500	CZ	GPS	20:57:53	20:59:22.01	20:59:24.13	21:00:53	0.04	0.04	2.12	24.4
10	show	Jiri Kubanek	O+	VID	M200	CZ	GPS	20:57:52	20:59:20.72	20:59:23.58	21:00:52	0.08	0.08	2.86	32.9
11	show	Jiri Polak	O+	VID	M300	CZ	GPS	20:57:24	20:59:22.23	20:59:26.58	21:01:24	0.08	0.08	4.35	50.0
12	show	Tomas Janik, Bohuslav Matous	O+	CCD	T600	CZ	GPS	20:58:20	20:59:17.72	20:59:21.08	21:00:22	0.02	0.02	3.36	38.6
13	show	Vaclav Priban	O+	VID	M200	CZ	GPS	20:57:21	20:59:08.11	20:59:13.73	21:00:20	0.23	0.30	5.62	64.6
14	show	Daniel Antuszewicz	O+	VID	M200	PL	NTP	20:57:38	20:58:34.97	20:58:39.94	20:59:37	0.07	0.07	4.97	57.2

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

14 observations found in db: sodis

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

JPL#68 : b436b960-c350-11ef-5276-c55ffff5ec22 [db: observed]

JPL#68 : b63d48b0-c359-11ef-5276-7717ecd763b8 [db: observed]

JPL#66 : bbabbc70-875c-11ef-78cd-91897ff21b81 [db: asteroids]

Using prediction b436b960-c350-11ef-5276-c55ffff5ec22 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 = 259 x 37 km
a',b' = 129.6, 18.3 km
X0,Y0 = 1183.0, 18.8 km
Mean diameter = 97 km

From 14 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).
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] : b436b960-c350-11ef-5276-c55ffff5ec22 [observed] Occultation Date + Time : 2024-08-10 at 21:00:37 UT +/- 0.01 min [1] Object Designation : (1574) Meyer Orbit Class : MBA Star Designation : GDR3 4208489405109112448 Star Coordinates (ICRF) : RA = 19 30 44.6074, DE = -05 36 05.475 [2] Star Magnitudes : G = 13.01 mag, RP = 12.42 mag, BP = 13.42 mag Object Magnitude : V = 15.59 mag Estimated Magnitude Drop : 2.7 mag Estimated Max. Duration : 5.1 sec Object Mean Diameter : 58.7 km (src: astorb) Speed of the shadow : 11.5 km/s Elongation to Moon & Sun : 85° (sunlit = 33%), Sun = 150° Cross-track uncertainty : 0.7 mas = 1 km = 0.02 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#68 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : b436b960-c350-11ef-5276-c55ffff5ec22 [observed]

 Occultation Date + Time   : 2024-08-10 at 21:00:37 UT +/- 0.01 min  [1]
 Object Designation        : (1574) Meyer
 Orbit Class               : MBA
 Star Designation          : GDR3 4208489405109112448
 Star Coordinates (ICRF)   : RA = 19 30 44.6074, DE = -05 36 05.475  [2]
 Star Magnitudes           : G = 13.01 mag, RP = 12.42 mag, BP = 13.42 mag
 Object Magnitude          : V = 15.59 mag
 Estimated Magnitude Drop  : 2.7 mag
 Estimated Max. Duration   : 5.1 sec
 Object Mean Diameter      : 58.7 km  (src: astorb)
 Speed of the shadow       : 11.5 km/s
 Elongation to Moon & Sun  : 85° (sunlit = 33%), Sun = 150°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#68

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

More Data and Informations

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