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2025-04-03 / UCAC4 560-011190 / (380) Fiducia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Martin Gutekunst O+ VID L280 DE GPS 18:50:50 18:51:50.610 18:51:53.160 18:52:51 0.087 0.087 2.55 81.9
2 show Gregor Krannich O+ VID M350 DE GPS 18:50:50 18:51:50.667 18:51:51.967 18:52:50 0.108 0.108 1.30 41.7
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: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#69 : c3b053c0-859c-11ef-78cd-c6413fbe3a6b [db: asteroids]

Using prediction c3b053c0-859c-11ef-78cd-c6413fbe3a6b 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 = 520.5, 20.5 km
Circular diameter = 88 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: 2025-04-03, 18:51 UT (JD = 2460769.285)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 30863.013.717 202°, 44° 2.454499e66270.30.0° None2019-06-25 72.0 +/- 7.0 km 2019-06-24
# 30873.013.717 21°, 34° 2.454499e66270.30.0° None2019-06-25 73.0 +/- 7.0 km 2019-06-24
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] : c3b053c0-859c-11ef-78cd-c6413fbe3a6b [asteroids]

 Occultation Date + Time   : 2025-04-03 at 18:49:43 UT +/- 0.0 min  [1]
 Object Designation        : (380) Fiducia
 Orbit Class               : MBA
 Star Designation          : GDR3 3412929383048349440
 Star Coordinates (ICRF)   : RA = 04 46 02.1641, DE = +21 57 08.239  [2]
 Star Magnitudes           : G = 14.45 mag, RP = 13.75 mag, BP = 14.97 mag
 Object Magnitude          : V = 15.31 mag
 Estimated Magnitude Drop  : 1.3 mag
 Estimated Max. Duration   : 2.3 sec
 Object Mean Diameter      : 73.2 km  (src: astorb)
 Speed of the shadow       : 32.1 km/s
 Elongation to Moon & Sun  : 16° (sunlit = 36%), Sun = 59°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.02 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
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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