Cora»Occultation

2025-08-24 / UCAC4 494-122759 / (46137) 2001 FN56

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Andreas Schweizer	O+	VID	M250	CH	GPS	20:45:04	20:45:34.255	20:45:34.855	20:46:04	0.217	0.217	0.60	7.1
2	show	Stefan Meister	O+	VID	M500	CH	GPS	20:45:10	20:45:32.766	20:45:33.666	20:45:55	0.097	0.097	0.90	10.7

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):

JPL#59 : 512cce90-ddb7-11f0-547e-08aa7fca4baf [db: observed]

Using prediction 512cce90-ddb7-11f0-547e-08aa7fca4baf 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 = 2229.4, 30.0 km
Circular diameter = 13 km

From 2 chords (VID)

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 512cce90-ddb7-11f0-547e-08aa7fca4baf [observed] Occultation Date + Time : 2025-08-24 at 20:49:29 UT +/- 0.01 min [1] Object Designation : (46137) 2001 FN56 Orbit Class : MBA Star Designation : GDR3 4299179838591655552 Star Coordinates (ICRF) : RA = 20 02 07.4463, DE = +08 45 57.913 [2] Star Magnitudes : G = 14.97 mag, RP = 14.44 mag, BP = 15.33 mag Object Magnitude : V = 18.36 mag Estimated Magnitude Drop : 3.4 mag Estimated Max. Duration : 0.6 sec Object Mean Diameter : 6.9 km (src: astorb) Speed of the shadow : 11.9 km/s Elongation to Moon & Sun : 128° (sunlit = 3%), Sun = 141° Cross-track uncertainty : 0.4 mas = 0 km = 0.09 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#59 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 512cce90-ddb7-11f0-547e-08aa7fca4baf [observed]

 Occultation Date + Time   : 2025-08-24 at 20:49:29 UT +/- 0.01 min  [1]
 Object Designation        : (46137) 2001 FN56
 Orbit Class               : MBA
 Star Designation          : GDR3 4299179838591655552
 Star Coordinates (ICRF)   : RA = 20 02 07.4463, DE = +08 45 57.913  [2]
 Star Magnitudes           : G = 14.97 mag, RP = 14.44 mag, BP = 15.33 mag
 Object Magnitude          : V = 18.36 mag
 Estimated Magnitude Drop  : 3.4 mag
 Estimated Max. Duration   : 0.6 sec
 Object Mean Diameter      : 6.9 km  (src: astorb)
 Speed of the shadow       : 11.9 km/s
 Elongation to Moon & Sun  : 128° (sunlit = 3%), Sun = 141°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59
 Note                      : FP:true

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

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