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2019-10-27 / 4UC 606-006634 / (576) Emanuela

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Gregory Lyzenga O+ VID M200 US GPS++ 04:47:00 04:49:47.75 04:49:54.55 04:52:00 3.30 3.30 6.80 76.8
2 show Jiri Polak O+ VID M303 CZ GPS++ 04:35:14 04:37:23.62 04:37:27.46 04:39:14 0.32 1.60 3.84 43.4
3 show Jiri Kubanek O+ VID M203 CZ GPS++ 04:35:12 04:37:22.48 04:37:30.48 04:39:16 0.48 0.80 8.00 90.4
4 show Zdenek Moravec O- VID M355 CZ 04:35:21 04:39:22
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

4 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#74 : 8380cbf8-e473-455e-8976-479326d9746c [db: observed]

Using prediction 8380cbf8-e473-455e-8976-479326d9746c 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 = 110 x 29 km
a',b' = 55.2, 14.7 km
X0,Y0 = 728.9, 24.2 km
Mean diameter = 57 km

From 3 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: 2019-10-27, 04:48 UT (JD = 2458783.700)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 55751.020.369 5°, 37° 2.45732e61463.70.0° None2020-10-05 not scaled 2019-10-23
# 55761.020.368 182°, 24° 2.45732e61463.70.0° 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] : 8380cbf8-e473-455e-8976-479326d9746c [observed]

 Occultation Date + Time   : 2019-10-27 at 04:44:55 UT +/- 0.02 min  [1]
 Object Designation        : (576) Emanuela
 Orbit Class               : MBA
 Star Designation          : GDR3 0132410375698137856
 Star Coordinates (ICRF)   : RA = 02 27 31.3021, DE = +31 01 02.628  [2]
 Star Magnitudes           : G = 14.2 mag, RP = 13.67 mag, BP = 14.55 mag
 Object Magnitude          : V = 13.48 mag
 Estimated Magnitude Drop  : 0.5 mag
 Estimated Max. Duration   : 7.5 sec
 Object Mean Diameter      : 85 km  (src: astorb)
 Speed of the shadow       : 11.3 km/s
 Elongation to Moon & Sun  : 148° (sunlit = 1%), Sun = 161°
 Cross-track uncertainty   : 2.3 mas = 2 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.51 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#74

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

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