Cora»Occultation

2026-04-30 / UCAC4 558-026590 / (150) Nuwa

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Nosal, Paula Libic	O+	VID	M200	SK	NTP	20:02:01	20:04:03.900	20:04:07.200	20:06:10	0.800	0.600	3.30	110.2
2	show	Marek Harman	O+	VID	M350	SK	NTP	20:02:01	20:04:03.600	20:04:07.200	20:06:25	0.400	0.500	3.60	120.2
3	show	Tomas Janik	O+	CCD	T600	CZ	GPS	20:03:17	20:03:57.4	20:04:01.3	20:04:58	0.300	0.400	3.90	130.3

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

3 observations found in db: sodis

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

JPL#130 : c4a32de0-33bd-11f1-6999-494bef8abdb4 [db: asteroids]

Using prediction c4a32de0-33bd-11f1-6999-494bef8abdb4 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 = 193 x 14 km
a',b' = 96.7, 7.1 km
X0,Y0 = -66.3, -10.4 km
Mean diameter = 52 km

From 3 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).
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: 2026-04-30, 20:03 UT (JD = 2461161.335)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1185	None	8.135	359°, 25°	2.44559e6	15571.3	0.0°	None	None	not scaled	2016-01-04
# 1186	None	8.135	177°, 22°	2.44559e6	15571.3	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] : c4a32de0-33bd-11f1-6999-494bef8abdb4 [asteroids] Occultation Date + Time : 2026-04-30 at 20:02:02 UT +/- 0.0 min [1] Object Designation : (150) Nuwa Orbit Class : MBA Star Designation : GDR3 3375966069867918336 Star Coordinates (ICRF) : RA = 06 20 08.4558, DE = +21 27 31.830 [2] Star Magnitudes : G = 14.94 mag, RP = 14.31 mag, BP = 15.38 mag Object Magnitude : V = 14.61 mag Estimated Magnitude Drop : 0.6 mag Estimated Max. Duration : 4.5 sec Object Mean Diameter : 151.1 km (src: astorb) Speed of the shadow : 33.4 km/s Elongation to Moon & Sun : 116° (sunlit = 99%), Sun = 54° Cross-track uncertainty : 0.8 mas = 2 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.67 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#130 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : c4a32de0-33bd-11f1-6999-494bef8abdb4 [asteroids]

 Occultation Date + Time   : 2026-04-30 at 20:02:02 UT +/- 0.0 min  [1]
 Object Designation        : (150) Nuwa
 Orbit Class               : MBA
 Star Designation          : GDR3 3375966069867918336
 Star Coordinates (ICRF)   : RA = 06 20 08.4558, DE = +21 27 31.830  [2]
 Star Magnitudes           : G = 14.94 mag, RP = 14.31 mag, BP = 15.38 mag
 Object Magnitude          : V = 14.61 mag
 Estimated Magnitude Drop  : 0.6 mag
 Estimated Max. Duration   : 4.5 sec
 Object Mean Diameter      : 151.1 km  (src: astorb)
 Speed of the shadow       : 33.4 km/s
 Elongation to Moon & Sun  : 116° (sunlit = 99%), Sun = 54°
 Cross-track uncertainty   : 0.8 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.67 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#130
 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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