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2017-01-17 / 2UC 34648466 / (792) Metcalfia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show F. Van Den Abbeel O+ VID M200 BE GPS++ 20:45:29 20:46:59.30 20:47:04.42 20:48:28 0.32 0.32 5.12 47.1
2 show Jean Bourgeois O+ VID M300 BE RAD++ 20:45:00 20:46:58.6 20:47:03.1 20:47:45 0.2 0.2 4.50 41.4
3 show Stefano Sposetti O- VID M280 CH 20:42:28 20:51:00
4 show Jean-Louis Dumont O- CCD M280 FR 20:45:05 20:49:19
5 show Christophe Ratinaud O- VID M254 FR 20:45:37 20:49:37
6 show Bjoern Kattentidt O- VID M279 DE 20:44:07 20:47:56
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

6 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#69 : 64165fb2-cdf6-4e3a-9002-19144ced98c5 [db: observed]

Using prediction 64165fb2-cdf6-4e3a-9002-19144ced98c5 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:
X0,Y0 = 421.9, 14.9 km
Circular diameter = 50 km

From 2 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: 2017-01-17, 20:45 UT (JD = 2457771.365)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 488None9.178 274°, -13° 2.443957e613814.40.0° NoneNone not scaled 2013-02-11
# 489None9.178 88°, -14° 2.443957e613814.40.0° NoneNone not scaled 2013-02-11
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] : 64165fb2-cdf6-4e3a-9002-19144ced98c5 [observed]

 Occultation Date + Time   : 2017-01-17 at 20:41:35 UT +/- 0.0 min  [1]
 Object Designation        : (792) Metcalfia
 Orbit Class               : MBA
 Star Designation          : GDR3 0595529346241442048
 Star Coordinates (ICRF)   : RA = 08 44 40.6739, DE = +08 00 53.511  [2]
 Star Magnitudes           : G = 12.89 mag, RP = 12.41 mag, BP = 13.21 mag
 Object Magnitude          : V = 13.14 mag
 Estimated Magnitude Drop  : 0.9 mag
 Estimated Max. Duration   : 6.6 sec
 Object Mean Diameter      : 61 km  (src: astorb)
 Speed of the shadow       : 9.2 km/s
 Elongation to Moon & Sun  : 55° (sunlit = 70%), Sun = 163°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.09 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69

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

More Data and Informations
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