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2019-11-08 / 4UC 458-040649 / (329) Svea

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Tickner O+ CCD M356 UK GPS 01:55:49 01:57:44.12 01:57:49.19 01:59:51 0.24 0.12 5.07 56.8
2 show Peter Birtwhistle O+ CCD M405 UK NTP 01:57:38 01:57:42.17 01:57:47.72 01:57:58 0.06 0.06 5.55 62.2
3 show Adrian Jones O+ VID M305 UK GPS++ 01:55:51 01:57:44.94 01:57:49.22 01:59:46 0.08 0.04 4.28 47.9
4 show John Talbot O+ VID M303 UK GPS++ 01:54:42 01:57:42.80 01:57:47.68 02:00:47 0.08 0.08 4.88 54.7
5 show Tim Haymes O- VID M203 UK 01:55:10 02:00:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#85 : f600cdfc-d268-4b57-b559-1265474628ca [db: observed]

Using prediction f600cdfc-d268-4b57-b559-1265474628ca 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 = 174 x 65 km
a',b' = 87.1, 32.3 km
X0,Y0 = -1020.2, 7.7 km
Mean diameter = 106 km

From 4 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: 2019-11-08, 01:57 UT (JD = 2458795.581)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 18673.022.767 33°, 51° 2.446594e612201.60.0° None2018-03-22 77.0 +/- 4.0 km 2018-03-22
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] : f600cdfc-d268-4b57-b559-1265474628ca [observed]

 Occultation Date + Time   : 2019-11-08 at 02:05:54 UT +/- 0.01 min  [1]
 Object Designation        : (329) Svea
 Orbit Class               : MBA
 Star Designation          : GDR3 3087477067965734400
 Star Coordinates (ICRF)   : RA = 07 55 43.5057, DE = +01 25 50.762  [2]
 Star Magnitudes           : G = 12.43 mag, RP = 11.75 mag, BP = 12.95 mag
 Object Magnitude          : V = 14.34 mag
 Estimated Magnitude Drop  : 2.1 mag
 Estimated Max. Duration   : 7.0 sec
 Object Mean Diameter      : 78 km  (src: astorb)
 Speed of the shadow       : 11.2 km/s
 Elongation to Moon & Sun  : 121° (sunlit = 82%), Sun = 104°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#85

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

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