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2022-02-05 / 4UC 559-018971 / (54671) 2000 WW102

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Pietro Baruffetti O+ VID M300 IT GPS++ 18:49:38 18:51:10.55 18:51:11.65 18:52:39 0.16 0.16 1.10 4.7
2 show Alberto Ossola O+ VID M230 CH GPS++ 18:50:23 18:51:59.68 18:52:00.80 18:53:19 0.16 0.16 1.12 4.8
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#41 : d22b1350-1eb2-4fd0-a492-bce7e03f26eb [db: observed]

Using prediction d22b1350-1eb2-4fd0-a492-bce7e03f26eb 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 = 1021.0, 33.3 km
Circular diameter = 6 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).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2022-02-05, 18:51 UT (JD = 2459616.285)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 55381.05.534 200°, -66° 2.457247e62369.30.0° 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] : d22b1350-1eb2-4fd0-a492-bce7e03f26eb [observed]

 Occultation Date + Time   : 2022-02-05 at 18:41:00 UT +/- 0.53 min  [1]
 Object Designation        : (54671) 2000 WW102
 Orbit Class               : MBA
 Star Designation          : GDR3 3403166613147139456
 Star Coordinates (ICRF)   : RA = 05 43 29.5368, DE = +21 47 42.649  [2]
 Star Magnitudes           : G = 12.76 mag, RP = 11.85 mag, BP = 13.63 mag
 Object Magnitude          : V = 17.68 mag
 Estimated Magnitude Drop  : 4.9 mag
 Estimated Max. Duration   : 1.5 sec
 Object Mean Diameter      : 7 km  (src: astorb)
 Speed of the shadow       : 4.3 km/s
 Elongation to Moon & Sun  : 71° (sunlit = 24%), Sun = 129°
 Cross-track uncertainty   : 3.3 mas = 4 km = 0.63 path-width (1-sig)
 RUWE and duplicate source : 1.11 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#41

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

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