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2016-04-20 / TYC 5758-01156-1 / (56) Melete

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Andrea Manna O+ VID M200 CH GPS++ 01:54:11 01:55:11.66 01:55:14.38 01:56:50 0.09 0.09 2.72 67.7
2 show Jiri Polak O+ VID M200 CZ GPS++ 01:54:22 01:55:32.67 01:55:34.11 01:58:04 0.08 0.08 1.44 35.9
3 show Karel Halir O+ VID M507 CZ GPS++ 01:53:00 01:55:33.31 01:55:34.59 01:58:00 0.02 0.02 1.28 31.9
4 show E. Frappa/A. Klotz O- CCD M250 FR 01:54:16 01:57:32
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

4 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#134 : 4f180c51-832d-4d92-97ad-7a307eba002c [db: observed]

Using prediction 4f180c51-832d-4d92-97ad-7a307eba002c 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 = 195 x 116 km
a',b' = 97.4, 57.9 km
X0,Y0 = 2160.8, 19.8 km
Mean diameter = 150 km

From 3 chords (VID)








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: 2016-04-20, 01:54 UT (JD = 2457498.579)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 1105None18.148 103°, -27° 2.443659e613839.60.0° NoneNone not scaled 2016-01-04
# 1106None18.148 282°, -5° 2.443659e613839.60.0° NoneNone not scaled 2016-01-04
# 18513.518.148 103°, -28° 2.443659e613839.60.0° None2017-09-21 116.0 +/- 5.0 km 2017-09-21
# 18523.518.148 283°, -1° 2.443659e613839.60.0° None2017-09-21 116.0 +/- 5.0 km 2017-09-21
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] : 4f180c51-832d-4d92-97ad-7a307eba002c [observed]

 Occultation Date + Time   : 2016-04-20 at 01:56:26 UT +/- 0.0 min  [1]
 Object Designation        : (56) Melete
 Orbit Class               : MBA
 Star Designation          : GDR3 6904498376041276672
 Star Coordinates (ICRF)   : RA = 20 26 49.0033, DE = -10 11 51.468  [2]
 Star Magnitudes           : G = 9.99 mag, RP = 9.09 mag, BP = 10.84 mag
 Object Magnitude          : V = 12.72 mag
 Estimated Magnitude Drop  : 2.8 mag
 Estimated Max. Duration   : 4.6 sec
 Object Mean Diameter      : 113 km  (src: astorb)
 Speed of the shadow       : 24.9 km/s
 Elongation to Moon & Sun  : 119° (sunlit = 96%), Sun = 84°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#134

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

More Data and Informations
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