Cora»Occultation

2025-08-15 / UCAC4 630-018307 / (1035) Amata

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Gregor Krannich	O+	VID	M350	DE	GPS	03:23:48	03:24:48.586	03:24:49.906	03:25:48	0.059	0.059	1.32	35.5
2	show	Björn Kattentidt	O+	VID	M280	DE	GPS	03:23:58	03:24:52.105	03:24:54.904	03:25:51	0.132	0.132	2.80	75.3

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#74 : 3ed7d050-ddb7-11f0-547e-446dfb7e487d [db: observed]

Using prediction 3ed7d050-ddb7-11f0-547e-446dfb7e487d 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 = 1352.0, 2.6 km
Circular diameter = 101 km

From 2 chords (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).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2025-08-15, 03:23 UT (JD = 2460902.641)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1287	None	9.082	247°, 29°	2.450842e6	10060.6	0.0°	None	None	not scaled	2016-01-12
# 1288	None	9.082	31°, 69°	2.450842e6	10060.6	0.0°	None	None	not scaled	2016-01-12

Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0

Image size: 300px. Transparent image background for copy & paste

Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 3ed7d050-ddb7-11f0-547e-446dfb7e487d [observed] Occultation Date + Time : 2025-08-15 at 03:25:54 UT +/- 0.0 min [1] Object Designation : (1035) Amata Orbit Class : MBA Star Designation : GDR3 0174721812222712192 Star Coordinates (ICRF) : RA = 04 39 37.1445, DE = +35 51 10.330 [2] Star Magnitudes : G = 12.23 mag, RP = 11.22 mag, BP = 13.29 mag Object Magnitude : V = 16.43 mag Estimated Magnitude Drop : 4.2 mag Estimated Max. Duration : 1.9 sec Object Mean Diameter : 50.7 km (src: astorb) Speed of the shadow : 26.9 km/s Elongation to Moon & Sun : 36° (sunlit = 62%), Sun = 70° Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.95 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#74 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 3ed7d050-ddb7-11f0-547e-446dfb7e487d [observed]

 Occultation Date + Time   : 2025-08-15 at 03:25:54 UT +/- 0.0 min  [1]
 Object Designation        : (1035) Amata
 Orbit Class               : MBA
 Star Designation          : GDR3 0174721812222712192
 Star Coordinates (ICRF)   : RA = 04 39 37.1445, DE = +35 51 10.330  [2]
 Star Magnitudes           : G = 12.23 mag, RP = 11.22 mag, BP = 13.29 mag
 Object Magnitude          : V = 16.43 mag
 Estimated Magnitude Drop  : 4.2 mag
 Estimated Max. Duration   : 1.9 sec
 Object Mean Diameter      : 50.7 km  (src: astorb)
 Speed of the shadow       : 26.9 km/s
 Elongation to Moon & Sun  : 36° (sunlit = 62%), Sun = 70°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#74
 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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