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2023-04-08 / UCAC4 402-083153 / (676) Melitta

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Mavroudis Eleftheriou, Michail Dogramatzidis, +1 O+ CCD M356 GR GPS 01:38:16 01:40:31.9 01:40:38.2 01:42:36 0.3 0.3 6.30 92.0
2 show Mavroudis Eleftheriou, Michail Dogramatzidis, +1 O+ CCD M356 GR GPS 01:38:16 01:40:31.9 01:40:36.3 01:42:36 0.3 0.3 4.40 64.2
3 show Ferran Casarramona O- VID M200 ES GPS 01:37:02 01:40:01
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#81 : 8e5e8910-ddb3-11f0-547e-732b4eff9c98 [db: observed]
Using prediction 8e5e8910-ddb3-11f0-547e-732b4eff9c98 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).

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Sky projection (artificial light) for occ. time: 2023-04-08, 01:39 UT (JD = 2460042.569)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 56801.016.741 64°, -74° 2.457324e62718.60.0° None2020-10-05 not scaled 2019-10-23
# 56811.016.741 236°, -26° 2.457324e62718.60.0° None2020-10-05 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] : 8e5e8910-ddb3-11f0-547e-732b4eff9c98 [observed] Occultation Date + Time : 2023-04-08 at 01:41:38 UT +/- 0.0 min [1] Object Designation : (676) Melitta Orbit Class : MBA Star Designation : GDR3 4155332686530844800 Star Coordinates (ICRF) : RA = 18 42 17.9334, DE = -09 36 42.590 [2] Star Magnitudes : G = 12.61 mag, RP = 11.67 mag, BP = 13.51 mag Object Magnitude : V = 15.07 mag Estimated Magnitude Drop : 2.6 mag Estimated Max. Duration : 5.5 sec Object Mean Diameter : 80.0 km (src: astorb) Speed of the shadow : 14.6 km/s Elongation to Moon & Sun : 61° (sunlit = 96%), Sun = 97° Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig) RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#81 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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