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2020-06-20 / 4UC 318-170879 / (2494) Inge

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show N. Montigiani et al O+ VID M200 IT NTP 21:38:23 21:38:35.59 21:38:37.51 21:38:43 0.32 0.32 1.92 25.7
2 show Pietro Baruffetti O+ VID M300 IT GPS++ 21:37:03 21:38:40.05 21:38:42.45 21:39:03 0.08 0.08 2.40 32.2
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#56 : c51028ae-ecac-429f-8dc6-fc6e90ddd48c [db: observed]

Using prediction c51028ae-ecac-429f-8dc6-fc6e90ddd48c 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 = -1053.5, 22.7 km
Circular diameter = 36 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: 2020-06-20, 21:37 UT (JD = 2459021.401)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 40611.06.795 83°, 45° 2.449639e69382.40.0° None2019-09-26 not scaled 2019-05-07
# 40621.06.795 247°, 30° 2.449639e69382.40.0° None2019-09-26 not scaled 2019-05-07
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] : c51028ae-ecac-429f-8dc6-fc6e90ddd48c [observed]

 Occultation Date + Time   : 2020-06-20 at 21:34:26 UT +/- 0.02 min  [1]
 Object Designation        : (2494) Inge
 Orbit Class               : MBA
 Star Designation          : GDR3 4052596076737798272
 Star Coordinates (ICRF)   : RA = 18 17 51.5223, DE = -26 31 33.818  [2]
 Star Magnitudes           : G = 11.1 mag, RP = 10.12 mag, BP = 12.09 mag
 Object Magnitude          : V = 15.34 mag
 Estimated Magnitude Drop  : 4.3 mag
 Estimated Max. Duration   : 4.1 sec
 Object Mean Diameter      : 56 km  (src: astorb)
 Speed of the shadow       : 13.4 km/s
 Elongation to Moon & Sun  : 171° (sunlit = 0%), Sun = 175°
 Cross-track uncertainty   : 2.7 mas = 4 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.56 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#56

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

More Data and Informations
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