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2017-09-29 / TYC 1870-01460-1 / (1072) Malva

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Karel Halir O+ VID M507 CZ GPS++ 01:58:17 02:01:01.60 02:01:05.24 02:03:31 0.02 0.02 3.64 53.5
2 show Ladislav Cervinka O+ VID M200 CZ GPS++ 01:50:00 02:01:09.73 02:01:13.53 02:04:00 0.24 0.12 3.80 55.9
3 show Gabriel Murawski O+ CCD L107 PL NTP 02:00:52 02:01:57.69 02:01:58.73 02:03:04 0.1 0.1 1.04 15.3
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#60 : e0580bc9-4601-4674-baa0-b4b3f8012065 [db: observed]

Using prediction e0580bc9-4601-4674-baa0-b4b3f8012065 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 = 57 x 36 km
a',b' = 28.5, 17.8 km
X0,Y0 = 1008.0, 29.0 km
Mean diameter = 45 km

From 3 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).

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : e0580bc9-4601-4674-baa0-b4b3f8012065 [observed]

 Occultation Date + Time   : 2017-09-29 at 02:02:37 UT +/- 0.01 min  [1]
 Object Designation        : (1072) Malva
 Orbit Class               : MBA
 Star Designation          : GDR3 3441554240565771904
 Star Coordinates (ICRF)   : RA = 05 44 36.2716, DE = +27 27 17.918  [2]
 Star Magnitudes           : G = 11.14 mag, RP = 10.91 mag, BP = 11.25 mag
 Object Magnitude          : V = 15.39 mag
 Estimated Magnitude Drop  : 4.3 mag
 Estimated Max. Duration   : 3.1 sec
 Object Mean Diameter      : 45 km  (src: astorb)
 Speed of the shadow       : 14.7 km/s
 Elongation to Moon & Sun  : 159° (sunlit = 59%), Sun = 100°
 Cross-track uncertainty   : 1.3 mas = 1 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60

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

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