Cora»Occultation

2025-09-03 / UCAC4 560-017070 / (150) Nuwa

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Jean-Francois Pittet	O+	VID	M254	DE	GPS	23:31:19	23:32:19.1	23:32:23.4	23:33:19	0.500	0.800	4.30	96.3
2	show	Marcin Filipek	O+	VID	M400	PL	GPS	23:32:00	23:32:27.43	23:32:28.93	23:33:00	0.290	0.290	1.50	33.6
3	show	Stefan Meister, Andreas Schweizer	O-	VID	M500	CH	GPS	23:31:58	::	::	23:32:43
4	show	Daniel Blazewicz	O-	VID	M350	PL	GPS	23:30:21	::	::	23:34:32

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

4 observations found in db: sodis

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

JPL#129 : 6e9a3940-ddb7-11f0-547e-d98cf3bf0f27 [db: observed]

Using prediction 6e9a3940-ddb7-11f0-547e-d98cf3bf0f27 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 = -30.5, 7.2 km
Circular diameter = 105 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: 2025-09-03, 23:32 UT (JD = 2460922.481)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1185	None	8.135	359°, 25°	2.44559e6	15332.5	0.0°	None	None	not scaled	2016-01-04
# 1186	None	8.135	177°, 22°	2.44559e6	15332.5	0.0°	None	None	not scaled	2016-01-04

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] : 6e9a3940-ddb7-11f0-547e-d98cf3bf0f27 [observed] Occultation Date + Time : 2025-09-03 at 23:35:33 UT +/- 0.0 min [1] Object Designation : (150) Nuwa Orbit Class : MBA Star Designation : GDR3 3403828656587884672 Star Coordinates (ICRF) : RA = 05 32 18.9431, DE = +21 58 59.883 [2] Star Magnitudes : G = 14.74 mag, RP = 14.13 mag, BP = 15.16 mag Object Magnitude : V = 14.07 mag Estimated Magnitude Drop : 0.5 mag Estimated Max. Duration : 6.8 sec Object Mean Diameter : 151.1 km (src: astorb) Speed of the shadow : 22.4 km/s Elongation to Moon & Sun : 149° (sunlit = 84%), Sun = 78° Cross-track uncertainty : 0.7 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 0.99 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#129 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 6e9a3940-ddb7-11f0-547e-d98cf3bf0f27 [observed]

 Occultation Date + Time   : 2025-09-03 at 23:35:33 UT +/- 0.0 min  [1]
 Object Designation        : (150) Nuwa
 Orbit Class               : MBA
 Star Designation          : GDR3 3403828656587884672
 Star Coordinates (ICRF)   : RA = 05 32 18.9431, DE = +21 58 59.883  [2]
 Star Magnitudes           : G = 14.74 mag, RP = 14.13 mag, BP = 15.16 mag
 Object Magnitude          : V = 14.07 mag
 Estimated Magnitude Drop  : 0.5 mag
 Estimated Max. Duration   : 6.8 sec
 Object Mean Diameter      : 151.1 km  (src: astorb)
 Speed of the shadow       : 22.4 km/s
 Elongation to Moon & Sun  : 149° (sunlit = 84%), Sun = 78°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.99 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#129
 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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