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2025-04-03 / UCAC4 474-048833 / (442) Eichsfeldia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Björn Kattentidt O+ VID M280 DE GPS 01:41:03 01:42:27.625 01:42:30.665 01:43:59 0.312 0.312 3.04 28.0
2 show Henk de Groot O+ VID M350 NL GPS 01:42:29 01:43:25.8 01:43:32.0 01:44:34 0.7 0.5 6.20 57.0
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#72 : 2263b4c0-85b1-11ef-78cd-1efeffd97b1c [db: asteroids]

Using prediction 2263b4c0-85b1-11ef-78cd-1efeffd97b1c 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 = -2583.2, 17.2 km
Circular diameter = 59 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, 01:42 UT (JD = 2460768.571)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 53821.011.877 325°, 32° 2.457228e63540.60.0° None2020-10-05 not scaled 2019-10-23
# 53831.011.876 137°, 35° 2.457228e63540.60.0° None2020-10-05 not scaled 2019-10-23
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] : 2263b4c0-85b1-11ef-78cd-1efeffd97b1c [asteroids]

 Occultation Date + Time   : 2025-04-03 at 01:42:20 UT +/- 0.01 min  [1]
 Object Designation        : (442) Eichsfeldia
 Orbit Class               : MBA
 Star Designation          : GDR3 3705673701108514688
 Star Coordinates (ICRF)   : RA = 12 49 01.2614, DE = +04 46 26.882  [2]
 Star Magnitudes           : G = 13.78 mag, RP = 12.91 mag, BP = 14.52 mag
 Object Magnitude          : V = 12.5 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 7.1 sec
 Object Mean Diameter      : 65.7 km  (src: astorb)
 Speed of the shadow       : 9.2 km/s
 Elongation to Moon & Sun  : 110° (sunlit = 28%), Sun = 170°
 Cross-track uncertainty   : 1.3 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.33 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#72

 
 [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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