Cora»Occultation

2026-08-03 / UCAC4 366-105694 / (3017) Petrovic

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Daniel Blazewicz	O+	VID	M350	PL	GPS	21:11:53	21:12:31.81	21:12:33.63	21:13:14	0.030	0.050	1.82	9.8
2	show	Leszek Benedyktowicz	O+	VID	M200	PL	GPS	21:12:04	21:12:39.650	21:12:41.950	21:13:15	0.100	0.100	2.30	12.4
3	show	Marcin Filipek	O-	VID	M250	PL	GPS	21:12:11	::	::	21:13:11

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):

JPL68 : 6a288a00-d9ac-11f1-43f3-95089f711985 [db: observed]

Using prediction 6a288a00-d9ac-11f1-43f3-95089f711985 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 = -1386.9, 14.8 km
Circular diameter = 14 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: 2026-08-03, 21:11 UT (JD = 2461256.383)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 3688	1.0	4.080	9°, -55°	2.451053e6	10203.4	0.0°	None	2019-09-26	not scaled	2019-05-07

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] : 6a288a00-d9ac-11f1-43f3-95089f711985 [observed] Occultation Date + Time : 2026-08-03 at 21:13:29 UT +/- 0.01 min [1] Object Designation : (3017) Petrovic Orbit Class : MBA Star Designation : GDR3 4123810615876093568 Star Coordinates (ICRF) : RA = 17 46 42.0367, DE = -16 49 12.800 [2] Star Magnitudes : G = 12.04 mag, RP = 10.73 mag, BP = 14.02 mag Object Magnitude : V = 16.61 mag Estimated Magnitude Drop : 4.6 mag Estimated Max. Duration : 3.0 sec Object Mean Diameter : 15.8 km (src: astorb) Speed of the shadow : 5.4 km/s Elongation to Moon & Sun : 106° (sunlit = 74%), Sun = 135° Cross-track uncertainty : 0.4 mas = 0 km = 0.04 path-width (1-sig) RUWE and duplicate source : 0.86 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL68 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 6a288a00-d9ac-11f1-43f3-95089f711985 [observed]

 Occultation Date + Time   : 2026-08-03 at 21:13:29 UT +/- 0.01 min  [1]
 Object Designation        : (3017) Petrovic
 Orbit Class               : MBA
 Star Designation          : GDR3 4123810615876093568
 Star Coordinates (ICRF)   : RA = 17 46 42.0367, DE = -16 49 12.800  [2]
 Star Magnitudes           : G = 12.04 mag, RP = 10.73 mag, BP = 14.02 mag
 Object Magnitude          : V = 16.61 mag
 Estimated Magnitude Drop  : 4.6 mag
 Estimated Max. Duration   : 3.0 sec
 Object Mean Diameter      : 15.8 km  (src: astorb)
 Speed of the shadow       : 5.4 km/s
 Elongation to Moon & Sun  : 106° (sunlit = 74%), Sun = 135°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.86 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL68
 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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