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2021-02-15 / 4UC 376-064278 / (583) Klotilde

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Nosal O+ CCD M250 SK NTP+ 04:03:04 04:04:39.08 04:04:49.57 04:07:16 0.75 0.75 10.49 43.0
2 show Matej Korec O+ CCD M202 SK NTP+ 04:02:24 04:04:42.67 04:04:58.29 04:08:24 2.00 1.62 15.62 64.0
3 show Miguel Sanchez O- CCD M200 ES 04:00:24 04:40:10
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: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#69 : f929bb90-5cdf-4d1a-b13c-41ab68d33e54 [db: observed]

Using prediction f929bb90-5cdf-4d1a-b13c-41ab68d33e54 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 = 1444.3, 26.2 km
Circular diameter = 72 km

From 2 chords (CCD)








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: 2021-02-15, 04:03 UT (JD = 2459260.669)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 55881.09.214 150°, 40° 2.457417e61843.70.0° None2020-10-05 not scaled 2019-10-23
# 55891.09.214 327°, 54° 2.457417e61843.70.0° 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] : f929bb90-5cdf-4d1a-b13c-41ab68d33e54 [observed]

 Occultation Date + Time   : 2021-02-15 at 04:22:59 UT +/- 0.07 min  [1]
 Object Designation        : (583) Klotilde
 Orbit Class               : MBA
 Star Designation          : GDR3 3521779041332998272
 Star Coordinates (ICRF)   : RA = 12 20 55.1875, DE = -14 51 40.711  [2]
 Star Magnitudes           : G = 14.44 mag, RP = 13.88 mag, BP = 14.84 mag
 Object Magnitude          : V = 13.79 mag
 Estimated Magnitude Drop  : 0.5 mag
 Estimated Max. Duration   : 20.1 sec
 Object Mean Diameter      : 82 km  (src: astorb)
 Speed of the shadow       : 4.1 km/s
 Elongation to Moon & Sun  : 163° (sunlit = 12%), Sun = 135°
 Cross-track uncertainty   : 4.0 mas = 5 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69

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

More Data and Informations
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