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2021-03-07 / 4UC 412-061763 / (876) Scott

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Nosal O+ CCD M250 SK NTP+ 00:24:09 00:25:41.11 00:25:44.10 00:27:31 0.20 0.20 2.99 27.5
2 show Matej Korec O+ CCD M202 SK NTP+ 00:22:35 00:25:39.47 00:25:41.46 00:28:34 0.25 0.25 1.99 18.3
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#58 : 3c41a02f-9036-4c46-bf8e-0b5c3b81c901 [db: observed]

Using prediction 3c41a02f-9036-4c46-bf8e-0b5c3b81c901 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 = 3050.6, 13.3 km
Circular diameter = 27 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: 2021-03-07, 00:25 UT (JD = 2459280.517)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 36191.011.818 274°, -20° 2.451127e68153.50.0° None2019-09-26 not scaled 2019-05-07
# 36201.011.818 89°, -41° 2.451127e68153.50.0° None2019-09-26 not scaled 2019-05-07
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] : 3c41a02f-9036-4c46-bf8e-0b5c3b81c901 [observed]

 Occultation Date + Time   : 2021-03-07 at 00:25:56 UT +/- 0.02 min  [1]
 Object Designation        : (876) Scott
 Orbit Class               : MBA
 Star Designation          : GDR3 4348143702708863872
 Star Coordinates (ICRF)   : RA = 15 56 45.0787, DE = -07 44 33.547  [2]
 Star Magnitudes           : G = 13.52 mag, RP = 12.82 mag, BP = 14.08 mag
 Object Magnitude          : V = 16.7 mag
 Estimated Magnitude Drop  : 3.2 mag
 Estimated Max. Duration   : 2.8 sec
 Object Mean Diameter      : 26 km  (src: astorb)
 Speed of the shadow       : 9.2 km/s
 Elongation to Moon & Sun  : 33° (sunlit = 40%), Sun = 108°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 1.12 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#58

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

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