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2025-04-11 / TYC 5506-00521-1 / (2152) Hannibal

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Lionel Rousselot O+ VID M250 FR GPS 20:15:00 20:16:21.69 20:16:24.95 20:18:00 0.03 0.02 3.26 41.4
2 show Jean-Luc Dauvergne O+ VID T260 FR GPS 20:15:53 20:16:26.79 20:16:30.16 20:18:21 0.02 0.03 3.37 42.8
3 show Derrick Ward O- VID M200 GB NTP 20:14:42 20:18:42
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

3 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#64 : 0a198150-87ec-11ef-78cd-0a75af8bc984 [db: asteroids]

Using prediction 0a198150-87ec-11ef-78cd-0a75af8bc984 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 = -1978.7, 26.9 km
Circular diameter = 44 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: 2025-04-11, 20:15 UT (JD = 2460777.344)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 39531.05.978 137°, 0° 2.450903e69874.30.0° None2019-09-26 not scaled 2019-05-07
# 39541.05.978 319°, 3° 2.450903e69874.30.0° 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] : 0a198150-87ec-11ef-78cd-0a75af8bc984 [asteroids]

 Occultation Date + Time   : 2025-04-11 at 20:09:53 UT +/- 0.01 min  [1]
 Object Designation        : (2152) Hannibal
 Orbit Class               : MBA
 Star Designation          : GDR3 3564456619524887424
 Star Coordinates (ICRF)   : RA = 11 01 00.9423, DE = -12 43 54.013  [2]
 Star Magnitudes           : G = 10.75 mag, RP = 10.38 mag, BP = 10.98 mag
 Object Magnitude          : V = 16.45 mag
 Estimated Magnitude Drop  : 5.7 mag
 Estimated Max. Duration   : 3.7 sec
 Object Mean Diameter      : 46.9 km  (src: astorb)
 Speed of the shadow       : 12.7 km/s
 Elongation to Moon & Sun  : 24° (sunlit = 99%), Sun = 145°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#64

 
 [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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