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2012-12-08 / TYC 1881-01547-1 / (991) McDonalda

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Harrie Rutten O+ VID M356 NL GPS++ 00:23:00 00:24:54.39 00:24:56.41 00:26:30 2.02 28.1
2 show Peter Lindner O- VID M305 DE 00:17:02 00:29:19
3 show Eberhard Bredner O- VID M200 DE 00:15:00 00:30:00
4 show Henk De Groot O- VID M356 NL 00:20:11 00:29:35
5 show Reimer Asmus O- VIS M406 DE 00:18:00 00:32:00
6 show Jan-Maarten Winkel O- VID M310 NL 00:24:00 00:26:00
7 show Wolfgang Rothe O- VID M200 DE 00:21:31 00:26:08
8 show Dieter Ewald O- VIS L127 DE 00:22:30 00:26:10
9 show Henk Bulder O- VIS M305 NL 00:23:00 00:27:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

9 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#59 : 2c0a1ddc-4ea5-4e9d-9e1c-c750c593dba7 [db: observed]

Using prediction 2c0a1ddc-4ea5-4e9d-9e1c-c750c593dba7 for map and profile fit

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 2c0a1ddc-4ea5-4e9d-9e1c-c750c593dba7 [observed]

 Occultation Date + Time   : 2012-12-08 at 00:24:18 UT +/- 0.01 min  [1]
 Object Designation        : (991) McDonalda
 Orbit Class               : MBA
 Star Designation          : GDR3 3425888124014956928
 Star Coordinates (ICRF)   : RA = 06 14 58.4389, DE = +24 36 58.098  [2]
 Star Magnitudes           : G = 8.75 mag, RP = 7.71 mag, BP = 9.89 mag
 Object Magnitude          : V = 16.26 mag
 Estimated Magnitude Drop  : 7.5 mag
 Estimated Max. Duration   : 2.3 sec
 Object Mean Diameter      : 31 km  (src: astorb)
 Speed of the shadow       : 13.9 km/s
 Elongation to Moon & Sun  : 90° (sunlit = 36%), Sun = 163°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.87 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59

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

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