Cora»Occultation

2026-10-08 / UCAC4 484-130525 / (1031) Arctica

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Ferran Casarramona	O+	VID	M200	ES	GPS	23:25:02	23:29:48.374	23:29:54.288	23:35:00	0.432	0.432	5.91	59.1
2	show	Deborah Smith	O+	VID	M300	ES	GPS	23:28:50	23:29:46.385	23:29:53.009	23:30:50	0.344	0.344	6.62	66.2
3	show	Deborah Smith	O-	VID	M250	ES	GPS	23:28:47	::	::	23:30:47

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):

JPL81 : 408753a0-d9b3-11f1-43f3-7c6dfd7c7787 [db: observed]

Using prediction 408753a0-d9b3-11f1-43f3-7c6dfd7c7787 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 = -2768.4, 26.7 km
Circular diameter = 80 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] : 408753a0-d9b3-11f1-43f3-7c6dfd7c7787 [observed] Occultation Date + Time : 2026-10-08 at 23:36:17 UT +/- 0.08 min [1] Object Designation : (1031) Arctica Orbit Class : MBA Star Designation : GDR3 2701175747876542720 Star Coordinates (ICRF) : RA = 21 42 02.8367, DE = +06 38 15.970 [2] Star Magnitudes : G = 15.13 mag, RP = 14.52 mag, BP = 15.58 mag Object Magnitude : V = 14.77 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 7.5 sec Object Mean Diameter : 75.5 km (src: astorb) Speed of the shadow : 10.0 km/s Elongation to Moon & Sun : 150° (sunlit = 3%), Sun = 131° Cross-track uncertainty : 1.3 mas = 2 km = 0.03 path-width (1-sig) RUWE and duplicate source : 1.04 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL81 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 408753a0-d9b3-11f1-43f3-7c6dfd7c7787 [observed]

 Occultation Date + Time   : 2026-10-08 at 23:36:17 UT +/- 0.08 min  [1]
 Object Designation        : (1031) Arctica
 Orbit Class               : MBA
 Star Designation          : GDR3 2701175747876542720
 Star Coordinates (ICRF)   : RA = 21 42 02.8367, DE = +06 38 15.970  [2]
 Star Magnitudes           : G = 15.13 mag, RP = 14.52 mag, BP = 15.58 mag
 Object Magnitude          : V = 14.77 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 7.5 sec
 Object Mean Diameter      : 75.5 km  (src: astorb)
 Speed of the shadow       : 10.0 km/s
 Elongation to Moon & Sun  : 150° (sunlit = 3%), Sun = 131°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL81
 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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