Cora»Occultation

2026-09-12 / UCAC4 493-147072 / (28336) 1999 DZ4

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O+	VID	M250	ES	GPS	22:00:06	22:01:04.943	22:01:05.449	22:02:06	0.038	0.038	0.51	6.7
2	show	Carles Schnabel	O+	VID	M400	ES	GPS	21:58:22	22:00:21.24	22:00:21.61	22:02:20	0.060	0.060	0.37	4.8
3	show	Gregor Krannich	O-	VID	M350	DE	GPS	21:58:13	::	::	22:00:13

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

3 observations found in db: sodis

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

JPL56 : dced80a0-d9b0-11f1-43f3-6a594feb110c [db: observed]

Using prediction dced80a0-d9b0-11f1-43f3-6a594feb110c 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:
X0,Y0 = 1845.2, 30.6 km
Circular diameter = 8 km

From 2 chords (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).

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : dced80a0-d9b0-11f1-43f3-6a594feb110c [observed] Occultation Date + Time : 2026-09-12 at 22:02:54 UT +/- 0.01 min [1] Object Designation : (28336) 1999 DZ4 Orbit Class : MBA Star Designation : GDR3 2725051131772107520 Star Coordinates (ICRF) : RA = 21 51 37.2116, DE = +08 24 00.042 [2] Star Magnitudes : G = 13.76 mag, RP = 13.26 mag, BP = 14.09 mag Object Magnitude : V = 18.44 mag Estimated Magnitude Drop : 4.7 mag Estimated Max. Duration : 0.5 sec Object Mean Diameter : 6.4 km (src: astorb) Speed of the shadow : 13.1 km/s Elongation to Moon & Sun : 138° (sunlit = 4%), Sun = 154° Cross-track uncertainty : 1.0 mas = 1 km = 0.25 path-width (1-sig) RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL56 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : dced80a0-d9b0-11f1-43f3-6a594feb110c [observed]

 Occultation Date + Time   : 2026-09-12 at 22:02:54 UT +/- 0.01 min  [1]
 Object Designation        : (28336) 1999 DZ4
 Orbit Class               : MBA
 Star Designation          : GDR3 2725051131772107520
 Star Coordinates (ICRF)   : RA = 21 51 37.2116, DE = +08 24 00.042  [2]
 Star Magnitudes           : G = 13.76 mag, RP = 13.26 mag, BP = 14.09 mag
 Object Magnitude          : V = 18.44 mag
 Estimated Magnitude Drop  : 4.7 mag
 Estimated Max. Duration   : 0.5 sec
 Object Mean Diameter      : 6.4 km  (src: astorb)
 Speed of the shadow       : 13.1 km/s
 Elongation to Moon & Sun  : 138° (sunlit = 4%), Sun = 154°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.25 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL56
 Note                      : FP:true

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

More Data and Informations

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