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2026-02-27 / UCAC4 535-045441 / (1109) Tata

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Martin Gutekunst O+ VID L280 DE GPS 22:15:47 22:16:14.254 22:16:22.272 22:16:47 0.016 0.016 8.02 66.6
2 show Jean-Francois Pittet O+ VID M254 DE GPS 22:15:13 22:16:09.51 22:16:17.84 22:17:13 0.020 0.030 8.33 69.1
3 show Manfred Simon O+ VID M203 DE GPS 22:15:23 22:16:19.902 22:16:27.154 22:17:23 0.142 0.142 7.25 60.2
4 show Gregor Krannich O+ VID M350 DE GPS 22:15:37 22:16:17.988 22:16:26.467 22:17:07 0.016 0.016 8.48 70.4
5 show Bernd Gaehrken, Peter Slansky O+ VID T800 DE GPS 22:14:28 22:16:13.973 22:16:20.024 22:18:18 0.050 0.050 6.05 50.2
6 show Peter Slansky, Bernd Gährken O+ CCD M400 DE GPS 22:11:03 22:16:14.360 22:16:20.320 22:19:50 0.100 0.100 5.96 49.5
7 show Stefano Sposetti O- VID M420 CH GPS 22:13:30 :: :: 22:19:30
8 show Karl-Ludwig Bath O- VID T180 DE GPS 22:15:02 :: :: 22:19:01
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

8 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#79 : 6decb190-de6f-11f0-4858-f1f37dd1bb2b [db: asteroids]

Using prediction 6decb190-de6f-11f0-4858-f1f37dd1bb2b 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:
Size = 76 x 60 km
a',b' = 38.1, 29.9 km
X0,Y0 = -842.5, 13.0 km
Mean diameter = 68 km

From 6 chords (VID,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.

Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : 6decb190-de6f-11f0-4858-f1f37dd1bb2b [asteroids]

 Occultation Date + Time   : 2026-02-27 at 22:18:00 UT +/- 0.01 min  [1]
 Object Designation        : (1109) Tata
 Orbit Class               : MBA
 Star Designation          : GDR3 0667316662282059520
 Star Coordinates (ICRF)   : RA = 08 00 24.9370, DE = +16 54 30.152  [2]
 Star Magnitudes           : G = 12.5 mag, RP = 11.9 mag, BP = 12.92 mag
 Object Magnitude          : V = 15.54 mag
 Estimated Magnitude Drop  : 3.1 mag
 Estimated Max. Duration   : 8.0 sec
 Object Mean Diameter      : 66.5 km  (src: astorb)
 Speed of the shadow       : 8.3 km/s
 Elongation to Moon & Sun  : 9° (sunlit = 85%), Sun = 139°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#79
 Note                      : FP:true

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

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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