Collaborative Occultation Resources and Archive (CORA)

2025-03-08 / UCAC4 540-044409 / (269) Justitia

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Peter Delincak	O+	VID	M400	SK	NTP	18:14:47	18:16:50.197	18:16:53.539	18:18:57	0.11	0.11	3.34	17.4
2	show	Peter Delincak	O+	VID	M400	SK	NTP	18:14:47	18:16:53.678	18:17:02.862	18:18:57	0.11	0.11	9.18	47.7

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

2 observations found in db: sodis

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

JPL#109 : 15ce0be0-8569-11ef-78cd-e8779ef915c7 [db: asteroids]

Using prediction 15ce0be0-8569-11ef-78cd-e8779ef915c7 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:
Circular profile fit was not successful ...

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: 2025-03-08, 18:15 UT (JD = 2460743.260)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 4966	1.0	33.129	71°, -79°	2.457319e6	3424.3	0.0°	None	2020-10-05	not scaled	2019-10-23
# 4967	1.0	33.129	251°, -69°	2.457319e6	3424.3	0.0°	None	2020-10-05	not scaled	2019-10-23

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] : 15ce0be0-8569-11ef-78cd-e8779ef915c7 [asteroids] Occultation Date + Time : 2025-03-08 at 18:07:02 UT +/- 0.01 min [1] Object Designation : (269) Justitia Orbit Class : MBA Star Designation : GDR3 0668335329743262080 Star Coordinates (ICRF) : RA = 07 52 16.9257, DE = +17 50 10.181 [2] Star Magnitudes : G = 14.21 mag, RP = 13.76 mag, BP = 14.5 mag Object Magnitude : V = 14.79 mag Estimated Magnitude Drop : 1.1 mag Estimated Max. Duration : 10.2 sec Object Mean Diameter : 53.6 km (src: astorb) Speed of the shadow : 5.2 km/s Elongation to Moon & Sun : 15° (sunlit = 72%), Sun = 128° Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#109 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 15ce0be0-8569-11ef-78cd-e8779ef915c7 [asteroids]

 Occultation Date + Time   : 2025-03-08 at 18:07:02 UT +/- 0.01 min  [1]
 Object Designation        : (269) Justitia
 Orbit Class               : MBA
 Star Designation          : GDR3 0668335329743262080
 Star Coordinates (ICRF)   : RA = 07 52 16.9257, DE = +17 50 10.181  [2]
 Star Magnitudes           : G = 14.21 mag, RP = 13.76 mag, BP = 14.5 mag
 Object Magnitude          : V = 14.79 mag
 Estimated Magnitude Drop  : 1.1 mag
 Estimated Max. Duration   : 10.2 sec
 Object Mean Diameter      : 53.6 km  (src: astorb)
 Speed of the shadow       : 5.2 km/s
 Elongation to Moon & Sun  : 15° (sunlit = 72%), Sun = 128°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#109

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations

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