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2022-04-01 / 4UC 449-049317 / (441) Bathilde

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Jordi Marco O+ CCD M235 ES NTP+ 22:17:48 22:18:57.31 22:19:02.26 22:21:10 0.45 0.30 4.95 29.7
2 show Carles Schnabel O+ VID M400 ES GPS++ 22:17:07 22:18:57.97 22:19:06.45 22:20:30 0.38 0.38 8.48 50.9
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#74 : 53223711-907b-43ed-90ed-c31a0b13c5a1 [db: observed]

Using prediction 53223711-907b-43ed-90ed-c31a0b13c5a1 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 = -2918.3, -45.8 km
Circular diameter = 58 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: 2022-04-01, 22:18 UT (JD = 2459671.429)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 527None10.443 122°, 43° 2.443846e615825.40.0° NoneNone not scaled 2013-02-11
# 528None10.443 285°, 55° 2.443846e615825.40.0° 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] : 53223711-907b-43ed-90ed-c31a0b13c5a1 [observed]

 Occultation Date + Time   : 2022-04-01 at 22:12:06 UT +/- 0.05 min  [1]
 Object Designation        : (441) Bathilde
 Orbit Class               : MBA
 Star Designation          : GDR3 3833417470283671168
 Star Coordinates (ICRF)   : RA = 09 59 56.6803, DE = -00 21 42.079  [2]
 Star Magnitudes           : G = 13.79 mag, RP = 13.31 mag, BP = 14.12 mag
 Object Magnitude          : V = 13.01 mag
 Estimated Magnitude Drop  : 0.4 mag
 Estimated Max. Duration   : 11.7 sec
 Object Mean Diameter      : 70 km  (src: astorb)
 Speed of the shadow       : 6.0 km/s
 Elongation to Moon & Sun  : 130° (sunlit = 0%), Sun = 139°
 Cross-track uncertainty   : 3.3 mas = 4 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.08 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#74

 Object is a Gaia mass determination target !

 [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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Aladin Sky Atlas
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