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2010-06-04 / TYC 5573-00543-1 / (80) Sappho

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show P. Baruffetti et al O+ VIS M200 IT RAD 23:36:00 23:39:57.7 23:40:01.6 23:41:05 0.5 0.2 3.90 33.9
2 show G. Bonatti et al O+ CCD M300 IT RAD 23:39:50 23:39:56.14 23:40:00.45 23:40:20 0.5 0.5 4.31 37.5
3 show Jean Lecacheux O+ VID M212 FR GPS++ 23:33:31 23:41:27.54 23:41:28.78 23:49:00 0.08 0.04 1.24 10.8
4 show F. Vachier et al O+ VID M300 FR GPS++ 23:25:00 23:41:22.02 23:41:28.23 23:55:00 0.08 0.08 6.21 54.0
5 show A. Leroy et al O+ VID M355 FR GPS++ 23:35:00 23:41:19.00 23:41:26.47 23:45:00 0.01 0.01 7.47 65.0
6 show Thierry Midavaine O+ VID M254 FR RAD++ 23:38:55 23:41:21.92 23:41:28.82 23:44:05 0.04 0.04 6.90 60.0
7 show Gilles Regheere O+ VIS M205 FR RAD 23:38:00 23:41:31.4 23:42:00 0.2
8 show Olivier Dechambre O+ VID M279 FR GPS++ 23:30:00 23:41:24.12 23:41:30.76 23:50:00 0.02 0.04 6.64 57.8
9 show E. Bredner/F. Colas O+ VID L380 FR GPS++ 23:00:00 23:41:22.38 23:41:29.58 23:50:00 0.2 0.2 7.20 62.6
10 show Peter Birtwhistle O+ CCD M405 UK NTP 23:41:56 23:42:06.01 23:42:11.51 23:42:26 0.12 0.12 5.50 47.8
11 show Tim Haymes O+ VID M300 UK GPS++ 23:35:30 23:42:01.61 23:42:08.33 23:45:00 0.10 0.10 6.72 58.5
12 show Eric Frappa O- VID M203 FR 23:37:02 23:44:26
13 show Christophe Ratinaud O- VIS M115 FR 23:36:59 23:47:01
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

13 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#66 : e8c0f789-b55d-4d34-9f62-328b5341c119 [db: observed]

Using prediction e8c0f789-b55d-4d34-9f62-328b5341c119 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 = 90 x 59 km
a',b' = 45.1, 29.3 km
X0,Y0 = -2888.6, 19.7 km
Mean diameter = 73 km

From 10 chords (VID,VIS,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).
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Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2010-06-04, 23:38 UT (JD = 2455352.485)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 145None14.031 194°, -26° 2.443023e612329.50.0° size from AO is 72+/-9 km2013-07-23 67.0 +/- 11.0 km 2011-03-28
# 18324.014.031 196°, -21° 2.443023e612329.50.0° None2017-06-19 61.0 +/- 8.0 km 2017-06-09
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] : e8c0f789-b55d-4d34-9f62-328b5341c119 [observed]

 Occultation Date + Time   : 2010-06-04 at 23:39:44 UT +/- 0.01 min  [1]
 Object Designation        : (80) Sappho
 Orbit Class               : MBA
 Star Designation          : GDR3 6324057185484527104
 Star Coordinates (ICRF)   : RA = 14 42 34.8139, DE = -11 49 43.832  [2]
 Star Magnitudes           : G = 10.52 mag, RP = 10.13 mag, BP = 10.77 mag
 Object Magnitude          : V = 11.79 mag
 Estimated Magnitude Drop  : 1.6 mag
 Estimated Max. Duration   : 9.0 sec
 Object Mean Diameter      : 78 km  (src: astorb)
 Speed of the shadow       : 8.7 km/s
 Elongation to Moon & Sun  : 122° (sunlit = 50%), Sun = 147°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.17 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#66

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

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