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2024-07-07 / UCAC4 411-087659 / (589) Croatia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Ferran Casarramona O+ VID M200 ES GPS 21:38:02 21:39:43.6 21:39:45.3 21:42:01 0.2 0.3 1.70 21.9
2 show Jesús Delgado O+ CCD M280 ES GPS 21:38:11 21:39:58.70 21:40:6.2 21:41:59 0.8 0.8 7.50 96.8
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#113 : 6bd162f0-c34c-11ef-5276-0219f677385a [db: observed]
JPL#111 : 2f87ec90-85fa-11ef-78cd-2003bbdcb7b1 [db: asteroids]

Using prediction 6bd162f0-c34c-11ef-5276-0219f677385a 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 = 828.2, 13.9 km
Circular diameter = 107 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: 2024-07-07, 21:38 UT (JD = 2460499.401)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 40541.024.939 220°, -39° 2.449829e610670.40.0° None2019-09-26 not scaled 2019-05-07
# 40551.024.939 35°, -56° 2.449829e610670.40.0° 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] : 6bd162f0-c34c-11ef-5276-0219f677385a [observed]

 Occultation Date + Time   : 2024-07-07 at 21:37:11 UT +/- 0.0 min  [1]
 Object Designation        : (589) Croatia
 Orbit Class               : MBA
 Star Designation          : GDR3 4251864073778458880
 Star Coordinates (ICRF)   : RA = 18 46 18.8413, DE = -07 48 39.103  [2]
 Star Magnitudes           : G = 14.2 mag, RP = 13.73 mag, BP = 14.5 mag
 Object Magnitude          : V = 14.0 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 6.8 sec
 Object Mean Diameter      : 88.0 km  (src: astorb)
 Speed of the shadow       : 12.9 km/s
 Elongation to Moon & Sun  : 147° (sunlit = 4%), Sun = 164°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#113

 
 [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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