Cora»Occultation

2025-11-13 / UCAC4 456-007151 / (48438) 1989 WJ2

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith	O+	VID	M300	ES	GPS	03:47:54	03:48:55.588	03:48:56.188	03:49:54	0.059	0.059	0.60	10.3
2	show	Deborah Smith	O+	VID	M200	ES	GPS	03:47:57	03:48:58.348	03:48:59.950	03:49:57	0.151	0.151	1.60	27.4

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

2 observations found in db: sodis

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

JPL#60 : b4ed7ff0-ddb8-11f0-547e-09a7679d28a4 [db: observed]

Using prediction b4ed7ff0-ddb8-11f0-547e-09a7679d28a4 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 = -183.3, 14.6 km
Circular diameter = 38 km

From 2 chords (VID)

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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] : b4ed7ff0-ddb8-11f0-547e-09a7679d28a4 [observed] Occultation Date + Time : 2025-11-13 at 03:51:43 UT +/- 0.02 min [1] Object Designation : (48438) 1989 WJ2 Orbit Class : JTRO Star Designation : GDR3 3230982886078870272 Star Coordinates (ICRF) : RA = 04 42 31.4372, DE = +01 00 37.962 [2] Star Magnitudes : G = 14.26 mag, RP = 13.72 mag, BP = 14.62 mag Object Magnitude : V = 17.88 mag Estimated Magnitude Drop : 3.7 mag Estimated Max. Duration : 1.4 sec Object Mean Diameter : 23.0 km (src: astorb) Speed of the shadow : 17.1 km/s Elongation to Moon & Sun : 84° (sunlit = 40%), Sun = 152° Cross-track uncertainty : 6.0 mas = 17 km = 0.78 path-width (1-sig) RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#60 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : b4ed7ff0-ddb8-11f0-547e-09a7679d28a4 [observed]

 Occultation Date + Time   : 2025-11-13 at 03:51:43 UT +/- 0.02 min  [1]
 Object Designation        : (48438) 1989 WJ2
 Orbit Class               : JTRO
 Star Designation          : GDR3 3230982886078870272
 Star Coordinates (ICRF)   : RA = 04 42 31.4372, DE = +01 00 37.962  [2]
 Star Magnitudes           : G = 14.26 mag, RP = 13.72 mag, BP = 14.62 mag
 Object Magnitude          : V = 17.88 mag
 Estimated Magnitude Drop  : 3.7 mag
 Estimated Max. Duration   : 1.4 sec
 Object Mean Diameter      : 23.0 km  (src: astorb)
 Speed of the shadow       : 17.1 km/s
 Elongation to Moon & Sun  : 84° (sunlit = 40%), Sun = 152°
 Cross-track uncertainty   : 6.0 mas = 17 km = 0.78 path-width (1-sig)
 RUWE and duplicate source : 1.05 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60
 Note                      : FP:true

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

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