Cora»Occultation

2026-11-02 / UCAC4 533-007194 / (4838) Billmclaughlin

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Stefano Sposetti	O+	VID	M200	CH	GPS	19:10:45	19:11:40.33	19:11:40.90	19:12:40	0.030	0.030	0.57	7.0
2	show	Stefano Sposetti	O+	VID	M420	CH	GPS	19:10:40	19:11:38.96	19:11:39.91	19:12:40	0.030	0.020	0.95	11.7

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):

JPL68 : 49255f50-d9b5-11f1-43f3-fd3efaffc0a7 [db: observed]

Using prediction 49255f50-d9b5-11f1-43f3-fd3efaffc0a7 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 = 2503.6, 39.7 km
Circular diameter = 14 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] : 49255f50-d9b5-11f1-43f3-fd3efaffc0a7 [observed] Occultation Date + Time : 2026-11-02 at 19:08:53 UT +/- 0.01 min [1] Object Designation : (4838) Billmclaughlin Orbit Class : MBA Star Designation : GDR3 0043471120646989952 Star Coordinates (ICRF) : RA = 03 50 00.2074, DE = +16 33 38.177 [2] Star Magnitudes : G = 12.18 mag, RP = 11.64 mag, BP = 12.55 mag Object Magnitude : V = 16.86 mag Estimated Magnitude Drop : 4.7 mag Estimated Max. Duration : 0.7 sec Object Mean Diameter : 8.3 km (src: astorb) Speed of the shadow : 12.3 km/s Elongation to Moon & Sun : 84° (sunlit = 40%), Sun = 161° Cross-track uncertainty : 0.3 mas = 0 km = 0.04 path-width (1-sig) RUWE and duplicate source : 1.22 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL68 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 49255f50-d9b5-11f1-43f3-fd3efaffc0a7 [observed]

 Occultation Date + Time   : 2026-11-02 at 19:08:53 UT +/- 0.01 min  [1]
 Object Designation        : (4838) Billmclaughlin
 Orbit Class               : MBA
 Star Designation          : GDR3 0043471120646989952
 Star Coordinates (ICRF)   : RA = 03 50 00.2074, DE = +16 33 38.177  [2]
 Star Magnitudes           : G = 12.18 mag, RP = 11.64 mag, BP = 12.55 mag
 Object Magnitude          : V = 16.86 mag
 Estimated Magnitude Drop  : 4.7 mag
 Estimated Max. Duration   : 0.7 sec
 Object Mean Diameter      : 8.3 km  (src: astorb)
 Speed of the shadow       : 12.3 km/s
 Elongation to Moon & Sun  : 84° (sunlit = 40%), Sun = 161°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.22 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL68
 Note                      : FP:true

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

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