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2021-06-09 / 4UC 534-049309 / (442) Eichsfeldia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Miguel Sanchez O+ CCD M200 ES NTP 21:14:36 21:18:18.51 21:18:20.37 21:21:14 0.05 0.05 1.86 57.5
2 show Rui Goncalves O+ VID M254 PT GPS++ 21:17:54 21:18:07.44 21:18:09.04 21:18:47 0.16 0.16 1.60 49.4
3 show O. Bouazara et al O- VIS M130 DZ 21:16:35 21:20:10
4 show L. Mokhtari et al O- VIS L80 DZ 21:15:00 21:23:00
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#68 : 3c277d5b-a5d4-4670-a5eb-010342d20497 [db: observed]

Using prediction 3c277d5b-a5d4-4670-a5eb-010342d20497 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 = -1317.4, 10.9 km
Circular diameter = 65 km

From 2 chords (VID,CCD)








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: 2021-06-09, 21:18 UT (JD = 2459375.388)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 53821.011.877 325°, 32° 2.457228e62147.40.0° None2020-10-05 not scaled 2019-10-23
# 53831.011.876 137°, 35° 2.457228e62147.40.0° 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] : 3c277d5b-a5d4-4670-a5eb-010342d20497 [observed]

 Occultation Date + Time   : 2021-06-09 at 21:16:23 UT +/- 0.0 min  [1]
 Object Designation        : (442) Eichsfeldia
 Orbit Class               : MBA
 Star Designation          : GDR3 0620547182847669888
 Star Coordinates (ICRF)   : RA = 09 43 35.3813, DE = +16 41 54.030  [2]
 Star Magnitudes           : G = 8.84 mag, RP = 7.68 mag, BP = 10.24 mag
 Object Magnitude          : V = 14.86 mag
 Estimated Magnitude Drop  : 6.0 mag
 Estimated Max. Duration   : 2.1 sec
 Object Mean Diameter      : 66 km  (src: astorb)
 Speed of the shadow       : 30.9 km/s
 Elongation to Moon & Sun  : 70° (sunlit = 0%), Sun = 63°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#68

 
 [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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