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2018-08-18 / TYC 1770-00737-1 / (1049) Gotho

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Filippo D'Arminio O+ CCD M200 IT NTP 00:26:39 00:29:24.54 00:29:28.09 00:30:42 1.63 1.63 3.55 49.7
2 show Robert Greimel O+ VID M500 AT GPS++ 00:25:02 00:30:13.75 00:30:17.31 00:35:01 0.08 0.12 3.56 49.8
3 show Jiri Kubanek O+ VID M203 CZ GPS++ 00:28:22 00:30:28.46 00:30:32.06 00:32:41 0.16 0.08 3.60 50.4
4 show Ladislav Cervinka O+ VID M200 CZ GPS++ 00:20:00 00:30:41.56 00:30:43.32 00:40:00 0.32 0.16 1.76 24.6
5 show M. Masek/M. Tylsar O+ CCD M200 CZ NTP 00:29:51 00:30:41.84 00:30:44.42 00:31:51 0.18 0.18 2.58 36.1
6 show Ettore Marmo O- CCD M254 IT 00:26:30 00:32:32
7 show Marek Zawilski O- CCD M203 PL 00:26:00 00:36:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

7 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#83 : 1fd19a2c-7409-4eca-b456-9d2c6ad5cca5 [db: observed]

Using prediction 1fd19a2c-7409-4eca-b456-9d2c6ad5cca5 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 = 97 x 36 km
a',b' = 48.5, 18.0 km
X0,Y0 = 3459.4, 17.1 km
Mean diameter = 59 km

From 5 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).

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 1fd19a2c-7409-4eca-b456-9d2c6ad5cca5 [observed]

 Occultation Date + Time   : 2018-08-18 at 00:29:41 UT +/- 0.01 min  [1]
 Object Designation        : (1049) Gotho
 Orbit Class               : MBA
 Star Designation          : GDR3 0103447658874664832
 Star Coordinates (ICRF)   : RA = 02 25 41.6028, DE = +26 05 56.247  [2]
 Star Magnitudes           : G = 11.32 mag, RP = 10.83 mag, BP = 11.65 mag
 Object Magnitude          : V = 15.59 mag
 Estimated Magnitude Drop  : 4.3 mag
 Estimated Max. Duration   : 3.6 sec
 Object Mean Diameter      : 51 km  (src: astorb)
 Speed of the shadow       : 14.0 km/s
 Elongation to Moon & Sun  : 162° (sunlit = 47%), Sun = 102°
 Cross-track uncertainty   : 2.0 mas = 3 km = 0.07 path-width (1-sig)
 RUWE and duplicate source : 1.52 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#83

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

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