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2024-11-01 / UCAC4 399-084190 / (4112) Hrabal

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Carsten Ziolek O+ VID M356 CH GPS 17:28:48 17:29:17.804 17:29:18.829 17:29:48 0.037 0.037 1.03 33.1
2 show Stefan Meister O+ VID M200 CH GPS 17:28:47 17:29:15.862 17:29:16.861 17:29:47 0.128 0.128 1.00 32.1
3 show Andreas Schweizer O+ VID M250 CH GPS 17:28:40 17:29:14.758 17:29:15.879 17:29:46 0.142 0.142 1.12 36.0
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#66 : b4ebdef0-c358-11ef-5276-1d9677f538a9 [db: observed]
JPL#64 : caf46910-89a1-11ef-78cd-991e5dce1b26 [db: asteroids]
JPL#64 : 8737f330-83a8-11ef-6618-c68feeff2e24 [db: asteroids]

Using prediction b4ebdef0-c358-11ef-5276-1d9677f538a9 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:
Ellipse profile fit was not successful. Trying circular fit.

Circular diameter = 36 km

From 3 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).

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : b4ebdef0-c358-11ef-5276-1d9677f538a9 [observed]

 Occultation Date + Time   : 2024-11-01 at 17:28:31 UT +/- 0.0 min  [1]
 Object Designation        : (4112) Hrabal
 Orbit Class               : MBA
 Star Designation          : GDR3 4155177659754917760
 Star Coordinates (ICRF)   : RA = 18 41 25.0312, DE = -10 19 48.260  [2]
 Star Magnitudes           : G = 13.71 mag, RP = 12.63 mag, BP = 14.93 mag
 Object Magnitude          : V = 17.12 mag
 Estimated Magnitude Drop  : 3.5 mag
 Estimated Max. Duration   : 1.5 sec
 Object Mean Diameter      : 49 km  (src: astorb)
 Speed of the shadow       : 32.1 km/s
 Elongation to Moon & Sun  : 60° (sunlit = 0%), Sun = 61°
 Cross-track uncertainty   : 0.2 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.89 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66

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

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