Collaborative Occultation Resources and Archive (CORA)

2024-11-02 / TYC 3778-00712-1 / (247) Eukrate

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Alberto Ossola	O+	VID	M230	CH	GPS	22:28:11	22:29:49.00	22:29:59.60	22:30:56	0.12	0.08	10.60	127.2
2	show	Stefano Sposetti	O+	VID	M420	CH	GPS	22:28:00	22:29:50.86	22:29:59.77	22:32:00	0.03	0.03	8.91	106.9

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#114 : 3f720f40-c359-11ef-5276-1ac573d85d68 [db: observed]

JPL#112 : 61266490-8562-11ef-78cd-2f58d6fdb6ad [db: asteroids]

JPL#112 : 1f2f8350-8265-11ef-6618-45f6f6ffa3ef [db: asteroids]

Using prediction 3f720f40-c359-11ef-5276-1ac573d85d68 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 = 4114.0, 16.3 km
Circular diameter = 145 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: 2024-11-02, 22:29 UT (JD = 2460617.437)

DAMIT	Q	P (h)	λ, β	JD0	JD-JD0	φ0	Version	Modified	Vol-equiv D	Cmnt
# 1207	None	12.095	103°, -22°	2.44375e6	16867.4	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] : 3f720f40-c359-11ef-5276-1ac573d85d68 [observed] Occultation Date + Time : 2024-11-02 at 22:30:27 UT +/- 0.02 min [1] Object Designation : (247) Eukrate Orbit Class : MBA Star Designation : GDR3 1001664954149809024 Star Coordinates (ICRF) : RA = 06 50 32.2724, DE = +58 40 28.427 [2] Star Magnitudes : G = 11.94 mag, RP = 11.31 mag, BP = 12.39 mag Object Magnitude : V = 11.77 mag Estimated Magnitude Drop : 0.7 mag Estimated Max. Duration : 11.2 sec Object Mean Diameter : 134.4 km (src: astorb) Speed of the shadow : 12.0 km/s Elongation to Moon & Sun : 130° (sunlit = 2%), Sun = 116° Cross-track uncertainty : 1.4 mas = 1 km = 0.01 path-width (1-sig) RUWE and duplicate source : 3.93 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#114 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 3f720f40-c359-11ef-5276-1ac573d85d68 [observed]

 Occultation Date + Time   : 2024-11-02 at 22:30:27 UT +/- 0.02 min  [1]
 Object Designation        : (247) Eukrate
 Orbit Class               : MBA
 Star Designation          : GDR3 1001664954149809024
 Star Coordinates (ICRF)   : RA = 06 50 32.2724, DE = +58 40 28.427  [2]
 Star Magnitudes           : G = 11.94 mag, RP = 11.31 mag, BP = 12.39 mag
 Object Magnitude          : V = 11.77 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 11.2 sec
 Object Mean Diameter      : 134.4 km  (src: astorb)
 Speed of the shadow       : 12.0 km/s
 Elongation to Moon & Sun  : 130° (sunlit = 2%), Sun = 116°
 Cross-track uncertainty   : 1.4 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 3.93 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#114

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

More Data and Informations

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