2023-10-08 / HIP 769 / (1340) Yvette

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Christophe Cote	O+	VID	M200	FR	NTP	20:26:08	20:31:52.7	20:31:55.2	20:36:04	0.5	0.5	2.50	35.2
2	show	Pierre Le Cam	O+	VID	M500	FR	GPS	20:31:25	20:31:50.897	20:31:52.861	20:32:25	0.015	0.015	1.96	27.6
3	show	Jean-Louis Dumont	O+	VID	M400	FR	GPS	20:30:00	20:31:49.07	20:31:51.43	20:34:00	0.02	0.02	2.36	33.3
4	show	Lionel Rousselot	O+	VID	L80	FR	GPS	20:30:01	20:31:43.22	20:31:45.76	20:34:02	0.02	0.02	2.54	35.8
5	show	Stefano Sposetti	O-	VID	M420	CH	GPS	20:29:00			20:34:00
6	show	Arnaud Leroy	O-	VID	M250	FR	GPS	20:30:08			20:33:07

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#74 : 26e46740-ddb4-11f0-547e-b6a816dfd4cb [db: observed]

Using prediction 26e46740-ddb4-11f0-547e-b6a816dfd4cb for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 217 x 18 km a',b' = 108.5, 9.0 km X0,Y0 = 2091.5, 35.5 km Mean diameter = 62 km From 4 chords (VID) 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] : 26e46740-ddb4-11f0-547e-b6a816dfd4cb [observed] Occultation Date + Time : 2023-10-08 at 20:31:07 UT +/- 0.0 min [1] Object Designation : (1340) Yvette Orbit Class : MBA Star Designation : GDR3 2546561151467110784 Star Coordinates (ICRF) : RA = 00 09 28.0835, DE = +01 14 38.670 [2] Star Magnitudes : G = 6.93 mag, RP = 6.19 mag, BP = 7.52 mag Object Magnitude : V = 16.32 mag Estimated Magnitude Drop : 9.4 mag Estimated Max. Duration : 1.8 sec Object Mean Diameter : 25.9 km (src: astorb) Speed of the shadow : 14.1 km/s Elongation to Moon & Sun : 128° (sunlit = 29%), Sun = 167° Cross-track uncertainty : 0.4 mas = 0 km = 0.03 path-width (1-sig) RUWE and duplicate source : 0.88 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#74 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

Aladin Sky Atlas

Aladin Lite direct link (has Gaia overlay)