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2013-03-02 / TYC 1977-01723-1 / (1028) Lydina

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show J.J. Castellani O+ VIS M400 FR PHONE 21:20:00 21:23:14.53 21:23:17.56 21:25:00 3.03 38.8
2 show Philippe Dupouy O+ CCD M430 FR NTP 21:22:53 21:23:17.23 21:23:22.95 21:24:23 0.2 0.2 5.72 73.2
3 show E. Frappa/A. Klotz O+ CCD M250 FR GPS++ 21:21:58 21:22:35.16 21:22:42.16 21:25:14 0.08 0.08 7.00 89.6
4 show Gerard Vaudescal O- CCD M305 FR 21:21:36 21:24:36
5 show Michel Boutet O- CCD M300 FR 21:20:18 21:29:00
6 show Jacques Sanchez O- VIS M250 FR 21:19:00 21:27:00
7 show Faustino Garcia O- CCD M250 ES 21:21:21 21:26:25
8 show Pietro Baruffetti O- VID M200 IT 21:20:54 21:23:54
9 show Claude Ninet O- CCD M280 FR 21:20:00 21:30:00
10 show Stefano Sposetti O- VID M400 CH 21:20:40 21:24:35
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

10 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#72 : a0a37f1b-af65-436c-8ff6-888cc100c69d [db: observed]

Using prediction a0a37f1b-af65-436c-8ff6-888cc100c69d 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 = 103 x 49 km
a',b' = 51.4, 24.7 km
X0,Y0 = -511.9, 4.1 km
Mean diameter = 71 km

From 3 chords (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).
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: 2013-03-02, 21:22 UT (JD = 2456354.390)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 44121.011.679 355°, -12° 2.457228e6-873.60.0° None2020-10-05 not scaled 2019-10-23
# 44131.011.678 174°, 7° 2.457228e6-873.60.0° 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] : a0a37f1b-af65-436c-8ff6-888cc100c69d [observed]

 Occultation Date + Time   : 2013-03-02 at 21:18:37 UT +/- 0.02 min  [1]
 Object Designation        : (1028) Lydina
 Orbit Class               : MBA
 Star Designation          : GDR3 0722935771505746176
 Star Coordinates (ICRF)   : RA = 10 41 32.5105, DE = +22 47 03.775  [2]
 Star Magnitudes           : G = 11.47 mag, RP = 11.0 mag, BP = 11.76 mag
 Object Magnitude          : V = 14.11 mag
 Estimated Magnitude Drop  : 2.7 mag
 Estimated Max. Duration   : 5.6 sec
 Object Mean Diameter      : 71 km  (src: astorb)
 Speed of the shadow       : 12.8 km/s
 Elongation to Moon & Sun  : 73° (sunlit = 72%), Sun = 164°
 Cross-track uncertainty   : 3.3 mas = 5 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 1.12 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#72

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

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