Cora»Occultation

2025-09-03 / UCAC4 445-000369 / (2505) Hebei

#	OBS	Observer	Occ	Meth.	Instr.	CC	TSRC	UT1	UT2	UT3	UT4	UT2E	UT3E	Dur.	Chrd
1	show	Deborah Smith, Eric Smith	O+	VID	M150	ES	GPS	00:48:18	00:50:17.706	00:50:20.460	00:52:18	0.023	0.023	2.75	29.7
2	show	Deborah Smith	O+	VID	M300	ES	GPS	00:48:18	00:50:18.297	00:50:19.139	00:52:18	0.014	0.014	0.84	9.1
3	show	Deborah Smith	O-	VID	M200	ES	GPS	00:48:20	::	::	00:52:20

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#75 : 07fa8b30-ddb3-11f0-547e-40b5dff90a0f [db: observed]

JPL#75 : 5f876db0-ddb7-11f0-547e-51f0b7fbe0b8 [db: observed]

Using prediction 07fa8b30-ddb3-11f0-547e-40b5dff90a0f 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 = 1599.9, 26.0 km
Circular diameter = 32 km

From 2 chords (VID)

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If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

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Map with groundtrack and observer stations

Event Details
Occultation UUID [and DB] : 07fa8b30-ddb3-11f0-547e-40b5dff90a0f [observed] Occultation Date + Time : 2025-09-03 at 00:51:15 UT +/- 0.0 min [1] Object Designation : (2505) Hebei Orbit Class : MBA Star Designation : GDR3 2545105677245688192 Star Coordinates (ICRF) : RA = 00 17 39.3179, DE = -01 01 19.798 [2] Star Magnitudes : G = 12.98 mag, RP = 12.49 mag, BP = 13.3 mag Object Magnitude : V = 16.29 mag Estimated Magnitude Drop : 3.4 mag Estimated Max. Duration : 1.4 sec Object Mean Diameter : 15.5 km (src: astorb) Speed of the shadow : 10.8 km/s Elongation to Moon & Sun : 81° (sunlit = 76%), Sun = 157° Cross-track uncertainty : 0.7 mas = 1 km = 0.07 path-width (1-sig) RUWE and duplicate source : 0.94 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#75 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

 Occultation UUID [and DB] : 07fa8b30-ddb3-11f0-547e-40b5dff90a0f [observed]

 Occultation Date + Time   : 2025-09-03 at 00:51:15 UT +/- 0.0 min  [1]
 Object Designation        : (2505) Hebei
 Orbit Class               : MBA
 Star Designation          : GDR3 2545105677245688192
 Star Coordinates (ICRF)   : RA = 00 17 39.3179, DE = -01 01 19.798  [2]
 Star Magnitudes           : G = 12.98 mag, RP = 12.49 mag, BP = 13.3 mag
 Object Magnitude          : V = 16.29 mag
 Estimated Magnitude Drop  : 3.4 mag
 Estimated Max. Duration   : 1.4 sec
 Object Mean Diameter      : 15.5 km  (src: astorb)
 Speed of the shadow       : 10.8 km/s
 Elongation to Moon & Sun  : 81° (sunlit = 76%), Sun = 157°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 0.94 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#75
 Note                      : FP:true

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

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