Cora»Occultation

2026-09-14 / UCAC4 526-151088 / (170) Maria

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Javier Prat, Pedro Martorell	O+	CCD	M310	ES	GPS	22:04:27	22:06:24.510	22:06:27.940	22:08:27	0.100	0.100	3.43	40.5
2	show	Gonzalo Arraras	O+	CCD	M200	ES	GPS	22:04:27	22:06:25.25	22:06:28.15	22:08:27	0.050	0.050	2.90	34.2
3	show	Yves Argentin	O+	VID	M305	FR	GPS	22:05:45	22:06:11.44	22:06:14.74	22:06:45	0.030	0.020	3.30	38.9
4	show	Christian SARTINI	O+	VID	M230	FR	GPS	22:05:04	22:06:01.45	22:06:03.99	22:07:05	0.040	0.050	2.54	30.0
5	show	Pascal Andre	O+	VID	M200	FR	GPS	22:05:32	22:06:01.10	22:06:03.700	22:07:57	0.050	0.020	2.60	30.7

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

5 observations found in db: sodis

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

JPL80 : ae433e70-d9b0-11f1-43f3-8c16ff6bc53e [db: observed]

Using prediction ae433e70-d9b0-11f1-43f3-8c16ff6bc53e 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:
Size = 45 x 14 km
a',b' = 22.5, 7.0 km
X0,Y0 = 496.0, 36.9 km
Mean diameter = 25 km

From 5 chords (CCD,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).
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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : ae433e70-d9b0-11f1-43f3-8c16ff6bc53e [observed] Occultation Date + Time : 2026-09-14 at 22:04:22 UT +/- 0.01 min [1] Object Designation : (170) Maria Orbit Class : MBA Star Designation : GDR3 2817283939545905920 Star Coordinates (ICRF) : RA = 23 12 13.1160, DE = +15 09 59.162 [2] Star Magnitudes : G = 12.73 mag, RP = 12.26 mag, BP = 13.04 mag Object Magnitude : V = 12.95 mag Estimated Magnitude Drop : 0.9 mag Estimated Max. Duration : 3.7 sec Object Mean Diameter : 44.3 km (src: astorb) Speed of the shadow : 11.8 km/s Elongation to Moon & Sun : 136° (sunlit = 15%), Sun = 161° Cross-track uncertainty : 2.3 mas = 2 km = 0.06 path-width (1-sig) RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL80 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : ae433e70-d9b0-11f1-43f3-8c16ff6bc53e [observed]

 Occultation Date + Time   : 2026-09-14 at 22:04:22 UT +/- 0.01 min  [1]
 Object Designation        : (170) Maria
 Orbit Class               : MBA
 Star Designation          : GDR3 2817283939545905920
 Star Coordinates (ICRF)   : RA = 23 12 13.1160, DE = +15 09 59.162  [2]
 Star Magnitudes           : G = 12.73 mag, RP = 12.26 mag, BP = 13.04 mag
 Object Magnitude          : V = 12.95 mag
 Estimated Magnitude Drop  : 0.9 mag
 Estimated Max. Duration   : 3.7 sec
 Object Mean Diameter      : 44.3 km  (src: astorb)
 Speed of the shadow       : 11.8 km/s
 Elongation to Moon & Sun  : 136° (sunlit = 15%), Sun = 161°
 Cross-track uncertainty   : 2.3 mas = 2 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL80
 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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