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2019-09-14 / TYC 1891-01348-1 / (734) Benda

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Arnaud Leroy O+ CCD M280 FR GPS++ 03:07:00 03:08:42.94 03:08:43.45 03:10:00 0.05 0.05 0.51 12.9
2 show Olivier Dechambre O+ CCD M279 FR GPS 03:00:00 03:08:40.48 03:08:42.71 03:13:08 0.02 0.02 2.23 56.2
3 show F. Van Den Abbeel O+ VID M200 BE GPS++ 03:07:45 03:08:49.40 03:08:51.92 03:09:45 1.66 0.14 2.52 63.5
4 show Christian Weber O+ CCD M150 DE GPS++ 03:07:24 03:09:11.30 03:09:13.18 03:10:13 0.08 0.15 1.88 47.4
5 show Nikolai Wuensche O+ CCD M300 DE GPS++ 03:06:00 03:09:11.85 03:09:14.35 03:12:30 0.20 0.10 2.50 63.0
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#59 : 5662abf2-f2b3-419a-b45f-6886518d4761 [db: observed]

Using prediction 5662abf2-f2b3-419a-b45f-6886518d4761 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 = 93 x 49 km
a',b' = 46.4, 24.6 km
X0,Y0 = 112.4, 17.1 km
Mean diameter = 68 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).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2019-09-14, 03:07 UT (JD = 2458740.630)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 57161.07.106 272°, 50° 2.457381e61359.60.0° None2020-10-05 not scaled 2019-10-23
# 57171.07.106 101°, 53° 2.457381e61359.60.0° 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] : 5662abf2-f2b3-419a-b45f-6886518d4761 [observed]

 Occultation Date + Time   : 2019-09-14 at 03:10:54 UT +/- 0.01 min  [1]
 Object Designation        : (734) Benda
 Orbit Class               : MBA
 Star Designation          : GDR3 3434358860378000256
 Star Coordinates (ICRF)   : RA = 06 30 26.4543, DE = +28 37 48.452  [2]
 Star Magnitudes           : G = 11.27 mag, RP = 10.6 mag, BP = 11.79 mag
 Object Magnitude          : V = 15.59 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 2.8 sec
 Object Mean Diameter      : 71 km  (src: astorb)
 Speed of the shadow       : 25.2 km/s
 Elongation to Moon & Sun  : 107° (sunlit = 100%), Sun = 74°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59

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

More Data and Informations
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