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2008-05-01 / TYC 0383-01269-1 / (747) Winchester

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show I. Majchrovic et al O+ CCD M200 SK NTP 00:42:02 00:42:22.63 00:42:35.15 00:43:22 0.03 0.03 12.52 179.0
2 show Adrian Galad O+ CCD M600 SK NTP 00:42:00 00:42:22.17 00:42:33.90 00:43:00 0.14 0.14 11.73 167.7
3 show J. Mueller/U. Appel O+ VID M310 DE GPS++ 00:40:00 00:43:06.89 00:43:17.12 00:45:00 0.08 0.06 10.23 146.3
4 show H. Bill/M. Jung O+ CCD M300 DE NTP 00:33:01 00:43:05.0 00:43:17.5 00:47:46 1.0 1.0 12.50 178.8
5 show Manfred Rain O+ VIS M200 DE RAD 00:41:30 00:43:15.0 00:43:26.0 00:44:01 0.3 0.3 11.00 157.3
6 show Harrie Rutten O+ VIS M250 NL RAD 00:37:00 00:43:14.4 00:43:26.2 00:46:00 11.80 168.7
7 show Henk De Groot O+ VID M356 NL RAD++ 00:36:40 00:43:16.44 00:43:28.65 00:50:04 0.02 0.02 12.21 174.6
8 show Alex Scholten O+ VIS M200 NL RAD 00:42:00 00:43:17.2 00:43:28.5 00:44:00 0.4 0.2 11.30 161.6
9 show Detlef Koschny O+ VID M152 NL RAD++ 00:35:00 00:43:22.33 00:43:34.51 00:45:00 12.18 174.2
10 show E. Frappa/A. Klotz O- CCD M250 FR 00:42:28 00:45:36
11 show T. Pauwels/P. De Cat O- CCD M850 BE 00:24:20 01:02:07
12 show Wolfgang Rothe O- VID M200 DE 00:40:05 00:46:26
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

12 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#125 : f3e5f1a4-fa71-465c-8b6b-0e66c0052681 [db: observed]

Using prediction f3e5f1a4-fa71-465c-8b6b-0e66c0052681 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 = 216 x 103 km
a',b' = 107.8, 51.7 km
X0,Y0 = -1621.6, 20.2 km
Mean diameter = 149 km

From 9 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).
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: 2008-05-01, 00:42 UT (JD = 2454587.529)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 247None9.415 304°, -60° 2.440674e613913.50.0° None2011-04-11 171.0 +/- 15.0 km 2011-02-18
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] : f3e5f1a4-fa71-465c-8b6b-0e66c0052681 [observed]

 Occultation Date + Time   : 2008-05-01 at 00:40:09 UT +/- 0.01 min  [1]
 Object Designation        : (747) Winchester
 Orbit Class               : MBA
 Star Designation          : GDR3 4383336561650375680
 Star Coordinates (ICRF)   : RA = 16 39 17.1967, DE = +00 09 25.101  [2]
 Star Magnitudes           : G = 11.69 mag, RP = 11.31 mag, BP = 11.92 mag
 Object Magnitude          : V = 14.07 mag
 Estimated Magnitude Drop  : 2.5 mag
 Estimated Max. Duration   : 12.0 sec
 Object Mean Diameter      : 172 km  (src: astorb)
 Speed of the shadow       : 14.3 km/s
 Elongation to Moon & Sun  : 91° (sunlit = 26%), Sun = 146°
 Cross-track uncertainty   : 1.7 mas = 3 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.69 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#125

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

More Data and Informations
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