2023-09-07 / UCAC4 435-119829 / (4867) Polites

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Roland BONINSEGNA	O+	VID	M400	BE	GPS	22:46:29	22:47:59.34	22:48:02.38	22:49:24	0.06	0.06	3.04	56.8
2	show	Jean Bourgeois	O+	VID	M200	BE	GPS	22:47:15	22:47:58.00	22:48:01.20	22:48:30	0.64	0.64	3.20	59.8
3	show	Zdenek Moravec, Bohuslav Matouš	O+	CCD	T432	CZ	GPS	22:46:30	22:47:24.55	22:47:27.85	22:48:27	0.15	0.15	3.30	61.7
4	show	Tomas Janik	O+	VID	M153	CZ	GPS	22:46:07	22:47:23.87	22:47:27.87	22:49:51	0.16	0.16	4.00	74.8
5	show	Josselin Desmars	O-	VID	M200	FR	GPS	22:47:13			22:49:13
6	show	Arnaud Leroy	O-	VID	M250	FR	GPS	22:46:30			22:49:30
7	show	Jiri Polak	O-	VID	M300	CZ	GPS	22:45:30			22:49:30
8	show	Michal Rottenborn	O-	VID	M254	CZ	GPS	22:45:27			22:49:27	0.0	0.0
9	show	Jiri Kubanek	O-	VID	M303	CZ	GPS	22:45:25			22:49:28
10	show	Jan Manek	O-	VID	M355	CZ	GPS	22:45:20			22:49:20
11	show	Daniel Blazewicz	O-	VID	M350	PL	GPS	22:46:12			22:48:06
12	show	Zdenek Sikac	O-	VID	T150	CZ	NTP	22:45:06			22:49:01
13	show	Olivier Schreurs	O-	VID	M250	BE	GPS	22:46:57			22:49:00
14	show	Philip Denyer	O-	VID	M235	GB	GPS	22:46:27			22:49:56
15	show	Daniel Antuszewicz	O-	VID	M200	PL	NTP	22:45:32			22:48:31
16	show	Christian Weber	O-	CCD	M254	DE	GPS	22:47:08			22:48:11

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#65 : 1aaa8540-ddb4-11f0-547e-af5efeeee537 [db: observed]

Using prediction 1aaa8540-ddb4-11f0-547e-af5efeeee537 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

Auto-Fit Result: Size = 105 x 11 km a',b' = 52.5, 5.3 km X0,Y0 = 327.9, 20.6 km Mean diameter = 33 km From 4 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] : 1aaa8540-ddb4-11f0-547e-af5efeeee537 [observed] Occultation Date + Time : 2023-09-07 at 22:47:47 UT +/- 0.01 min [1] Object Designation : (4867) Polites Orbit Class : JTRO Star Designation : GDR3 2649327216210931456 Star Coordinates (ICRF) : RA = 22 45 36.8261, DE = -03 00 10.151 [2] Star Magnitudes : G = 13.34 mag, RP = 12.89 mag, BP = 13.64 mag Object Magnitude : V = 16.74 mag Estimated Magnitude Drop : 3.5 mag Estimated Max. Duration : 1.9 sec Object Mean Diameter : 35.3 km (src: astorb) Speed of the shadow : 18.7 km/s Elongation to Moon & Sun : 105° (sunlit = 40%), Sun = 174° Cross-track uncertainty : 4.7 mas = 14 km = 0.40 path-width (1-sig) RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#65 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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