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2021-02-28 / 4UC 535-038274 / (357) Ninina

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Luca Grazzini O+ CCD M200 IT NTP 21:26:37 21:27:25.29 21:27:30.98 21:58:56 1.40 1.40 5.69 36.4
2 show Mauro Bertini O+ CCD M300 IT NTP 21:25:15 21:27:21.0 21:27:33.0 21:30:53 1.0 1.0 12.00 76.8
3 show Pietro Baruffetti O+ VID M300 IT GPS++ 21:26:09 21:27:29.63 21:27:40.63 21:29:10 0.16 0.12 11.00 70.4
4 show P. Bacci et al O+ CCD M600 IT GPS 21:26:16 21:27:26.04 21:27:42.04 21:28:14 1.0 1.0 16.00 102.4
5 show Roberto Bacci O+ CCD M407 IT NTP 21:25:25 21:27:27 21:27:46 21:29:54 2.5 2.5 19.00 121.6
6 show Gianni Casalnuovo O+ CCD M355 IT NTP 21:27:40 21:28:02.94 21:28:19.74 21:29:20 0.20 0.20 16.80 107.5
7 show Bjoern Kattentidt O+ VID M279 DE GPS++ 21:26:52 21:28:41.59 21:28:58.23 21:31:14 0.16 0.16 16.64 106.5
8 show Jiri Kubanek O+ CCD M203 CZ GPS++ 21:26:58 21:28:48.99 21:29:02.61 21:30:56 0.25 0.38 13.62 87.2
9 show Nello Ruocco O- CCD M356 IT 21:15:00 21:35:00
10 show Paolo Fini O- VID L105 IT 21:27:01 21:28:05
11 show Gianni Galli O- CCD M356 IT 21:24:03 21:32:13
12 show Davide Agnetti O- CCD M245 IT 21:10:48 21:43:48
13 show Alberto Ossola O- VID M230 CH 21:26:50 21:30:00
14 show Andrea Manna O- VID M200 CH 21:25:07 21:31:02
15 show Stefano Sposetti O- CCD M420 CH 21:25:00 21:31:00
16 show Werner Hasubick O- CCD M440 DE 21:26:00 21:32:00
17 show Gregor Krannich O- CCD M350 DE 21:27:31 21:29:46
18 show Jiri Polak O- CCD M303 CZ 21:27:00 21:31:00
19 show Michal Rottenborn O- CCD M254 CZ 21:27:00 21:31:00
20 show Miroslav Polacek O- CCD M200 CZ 21:27:03 21:31:03
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

20 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#78 : 2a52cb21-c339-48c6-ba20-2637ad48cc63 [db: observed]

Using prediction 2a52cb21-c339-48c6-ba20-2637ad48cc63 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 = 128 x 85 km
a',b' = 64.2, 42.4 km
X0,Y0 = -2290.0, 17.6 km
Mean diameter = 104 km

From 8 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).
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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 2a52cb21-c339-48c6-ba20-2637ad48cc63 [observed]

 Occultation Date + Time   : 2021-02-28 at 21:20:19 UT +/- 0.25 min  [1]
 Object Designation        : (357) Ninina
 Orbit Class               : MBA
 Star Designation          : GDR3 3360984021348654848
 Star Coordinates (ICRF)   : RA = 07 04 19.8330, DE = +16 48 08.006  [2]
 Star Magnitudes           : G = 13.93 mag, RP = 13.42 mag, BP = 14.27 mag
 Object Magnitude          : V = 14.29 mag
 Estimated Magnitude Drop  : 1.0 mag
 Estimated Max. Duration   : 16.6 sec
 Object Mean Diameter      : 106 km  (src: astorb)
 Speed of the shadow       : 6.4 km/s
 Elongation to Moon & Sun  : 76° (sunlit = 97%), Sun = 125°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.07 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#78

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

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