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2019-02-24 / 4UC 543-024190 / (58) Concordia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Andrea Manna O+ VID M200 CH GPS++ 21:35:11 21:36:22.43 21:36:28.19 21:39:07 0.32 0.32 5.76 23.6
2 show Stefano Sposetti O+ VID M280 CH GPS++ 21:33:00 21:36:24.37 21:36:31.09 21:39:00 0.32 0.32 6.72 27.6
3 show Alberto Ossola O- VID M230 CH 21:34:40 21:38:02
4 show S. Meister et al O- CCD M500 CH 21:35:03 21:37:28
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

4 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#143 : 073f2d9d-f95b-4fb9-857e-bf0dee72eabd [db: observed]

Using prediction 073f2d9d-f95b-4fb9-857e-bf0dee72eabd 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 = 435.7, 5.0 km
Circular diameter = 44 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).

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 073f2d9d-f95b-4fb9-857e-bf0dee72eabd [observed]

 Occultation Date + Time   : 2019-02-24 at 21:20:04 UT +/- 0.03 min  [1]
 Object Designation        : (58) Concordia
 Orbit Class               : MBA
 Star Designation          : GDR3 3373628881806090496
 Star Coordinates (ICRF)   : RA = 06 11 55.8460, DE = +18 28 35.021  [2]
 Star Magnitudes           : G = 14.27 mag, RP = 13.38 mag, BP = 15.08 mag
 Object Magnitude          : V = 13.76 mag
 Estimated Magnitude Drop  : 0.5 mag
 Estimated Max. Duration   : 23.0 sec
 Object Mean Diameter      : 93 km  (src: astorb)
 Speed of the shadow       : 4.1 km/s
 Elongation to Moon & Sun  : 134° (sunlit = 67%), Sun = 117°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#143

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

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