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2020-11-27 / TYC 1305-00959-1 / (1167) Dubiago

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Pierre Le Cam O+ CCD M250 FR GPS++ 21:30:00 21:31:55.16 21:31:57.51 21:34:00 0.03 0.03 2.35 32.7
2 show Maurice Audejean O+ CCD M320 FR GPS 21:31:38 21:31:54.20 21:31:58.49 21:32:11 0.06 0.05 4.29 59.6
3 show Donatas Tamonis O+ CCD M200 LT NTP 21:29:50 21:29:53.01 21:29:55.79 21:30:00 0.17 0.17 2.78 38.6
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#65 : 3504a997-83e7-4c2d-b6f2-cee74e3422a9 [db: observed]

Using prediction 3504a997-83e7-4c2d-b6f2-cee74e3422a9 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 = 85 x 58 km
a',b' = 42.3, 29.0 km
X0,Y0 = 755.8, 20.5 km
Mean diameter = 70 km

From 3 chords (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: 2020-11-27, 21:30 UT (JD = 2459181.396)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 44691.034.891 1°, -35° 2.457324e61857.40.0° None2020-10-05 not scaled 2019-10-23
# 44701.034.892 188°, -46° 2.457324e61857.40.0° 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] : 3504a997-83e7-4c2d-b6f2-cee74e3422a9 [observed]

 Occultation Date + Time   : 2020-11-27 at 21:28:41 UT +/- 0.02 min  [1]
 Object Designation        : (1167) Dubiago
 Orbit Class               : MBA
 Star Designation          : GDR3 3400859116197571968
 Star Coordinates (ICRF)   : RA = 05 30 13.2140, DE = +18 46 19.197  [2]
 Star Magnitudes           : G = 10.78 mag, RP = 10.48 mag, BP = 10.95 mag
 Object Magnitude          : V = 15.19 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 4.5 sec
 Object Mean Diameter      : 63 km  (src: astorb)
 Speed of the shadow       : 13.9 km/s
 Elongation to Moon & Sun  : 44° (sunlit = 94%), Sun = 163°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#65

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

More Data and Informations
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