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2017-05-16 / TYC 0832-00644-1 / (386) Siegena

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Bernd Gaehrken O+ VID L80 IT 20:21:30 20:23:30.56 20:23:42.88 20:25:00 1 1 12.32 179.9
2 show Carles Schnabel O+ VID M250 ES GPS++ 20:20:18 20:22:25.98 20:22:38.31 20:24:54 0.03 0.03 12.33 180.0
3 show P. Closas et al O+ VID L150 ES GPS++ 20:22:03 20:22:26.23 20:22:39.35 20:23:00 0.96 0.32 13.12 191.6
4 show Jorge Juan O+ VID M406 ES GPS++ 20:17:05 20:22:24.87 20:22:37.31 20:23:20 0.03 0.03 12.44 181.6
5 show C. Perello/A. Selva O+ VID M500 ES GPS++ 20:21:32 20:22:26.47 20:22:38.89 20:24:40 0.02 0.02 12.42 181.3
6 show Joan Rovira O+ VID M200 ES GPS++ 20:18:01 20:22:26.04 20:22:37.62 20:26:05 0.02 0.02 11.58 169.1
7 show Dariusz Miller O- VIS M270 PL 20:14:30 20:26:00
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#126 : 62bb91dd-ff0b-4dc8-a4bc-94f85872b9a2 [db: observed]

Using prediction 62bb91dd-ff0b-4dc8-a4bc-94f85872b9a2 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 = 283 x 42 km
a',b' = 141.4, 20.9 km
X0,Y0 = 114.5, 22.9 km
Mean diameter = 109 km

From 6 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: 2017-05-16, 20:22 UT (JD = 2457890.349)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 447None9.765 289°, 25° 2.444019e613871.30.0° NoneNone not scaled 2012-07-30
# 18154.09.765 287°, 25° 2.444019e613871.30.0° None2017-06-19 168.0 +/- 5.0 km 2017-06-19
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] : 62bb91dd-ff0b-4dc8-a4bc-94f85872b9a2 [observed]

 Occultation Date + Time   : 2017-05-16 at 20:19:24 UT +/- 0.0 min  [1]
 Object Designation        : (386) Siegena
 Orbit Class               : MBA
 Star Designation          : GDR3 3879849429712241408
 Star Coordinates (ICRF)   : RA = 09 56 26.6485, DE = +11 54 59.343  [2]
 Star Magnitudes           : G = 9.64 mag, RP = 9.23 mag, BP = 9.88 mag
 Object Magnitude          : V = 13.68 mag
 Estimated Magnitude Drop  : 4.1 mag
 Estimated Max. Duration   : 11.3 sec
 Object Mean Diameter      : 165 km  (src: astorb)
 Speed of the shadow       : 14.6 km/s
 Elongation to Moon & Sun  : 154° (sunlit = 71%), Sun = 91°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#126

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

More Data and Informations
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