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2023-05-21 / HIP 76363 / (67) Asia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Marek Zawilski, Mieczyslaw Borkowski O+ VID M200 PL GPS 00:27:07 00:27:22.16 00:27:29.94 00:27:45 0.03 0.05 7.78 71.6
2 show Maciej Borkowski, Marian Belza O+ VID M200 PL GPS 00:25:00 00:27:27.06 00:27:34.72 00:30:23 0.02 0.02 7.66 70.5
3 show Daniel Antuszewicz O+ VID M203 PL NTP 0:26:34. 0:27:28.17 0:27:33.54 0:28:34. 0.02 0.02 5.37 49.4
4 show Daniel Blazewicz O- CCD M350 PL GPS 00:26:17 00:29:02
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: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#152 : 96b6619e-da66-4f72-afb6-7c116189a8e0 [db: observed]

Using prediction 96b6619e-da66-4f72-afb6-7c116189a8e0 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:
Size = 75 x 36 km
a',b' = 37.7, 18.0 km
X0,Y0 = -2502.3, 29.5 km
Mean diameter = 52 km

From 3 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: 2023-05-21, 00:27 UT (JD = 2460085.519)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 56681.015.850 117°, 42° 2.457531e62554.50.0° None2020-10-05 not scaled 2019-10-23
# 56691.015.852 286°, 50° 2.457531e62554.50.0° 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] : 96b6619e-da66-4f72-afb6-7c116189a8e0 [observed]

 Occultation Date + Time   : 2023-05-21 at 00:26:38 UT +/- 0.02 min  [1]
 Object Designation        : (67) Asia
 Orbit Class               : MBA
 Star Designation          : GDR3 6266467755724978688
 Star Coordinates (ICRF)   : RA = 15 35 47.3887, DE = -12 51 33.145  [2]
 Star Magnitudes           : G = 8.89 mag, RP = 8.44 mag, BP = 9.17 mag
 Object Magnitude          : V = 10.91 mag
 Estimated Magnitude Drop  : 2.2 mag
 Estimated Max. Duration   : 6.3 sec
 Object Mean Diameter      : 58 km  (src: astorb)
 Speed of the shadow       : 9.2 km/s
 Elongation to Moon & Sun  : 157° (sunlit = 2%), Sun = 172°
 Cross-track uncertainty   : 2.0 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.54 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#152

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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