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2026-05-30 / HIP 57169 / (5027) Androgeos

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Deborah Smith O+ VID M300 ES GPS 00:47:17 00:48:16.015 00:48:17.314 00:49:17 0.003 0.003 1.30 24.3
2 show Deborah Smith O+ VID M250 ES GPS 00:47:16 00:48:14.578 00:48:17.198 00:49:16 0.004 0.004 2.62 49.0
3 show Deborah Smith, Eric Smith O+ VID M150 ES GPS 00:47:10 00:48:10.180 00:48:11.209 00:49:11 0.004 0.004 1.03 19.3
4 show Alfonso Noschese O+ VID M450 IT GPS 00:46:33 00:47:12.791 00:47:15.510 00:48:03 0.013 0.010 2.72 50.9
5 show Orlando Benítez Sánchez, Juan Carlos Alcázar O- VID M2350 ES GPS 00:47:00 :: :: 00:52:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#70 : 53a7ed90-3423-11f1-6999-a41cab7d91ed [db: asteroids]

Using prediction 53a7ed90-3423-11f1-6999-a41cab7d91ed 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 = 57 x 49 km
a',b' = 28.4, 24.5 km
X0,Y0 = -5321.0, 3.8 km
Mean diameter = 53 km

From 4 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: 2026-05-30, 00:48 UT (JD = 2461190.533)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 36121.011.320 276°, 36° 2.451162e610028.50.0° None2019-09-26 not scaled 2019-05-07
# 36131.011.320 56°, 28° 2.451162e610028.50.0° 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] : 53a7ed90-3423-11f1-6999-a41cab7d91ed [asteroids]

 Occultation Date + Time   : 2026-05-30 at 00:49:47 UT +/- 0.15 min  [1]
 Object Designation        : (5027) Androgeos
 Orbit Class               : JTRO
 Star Designation          : GDR3 4032786519269607168
 Star Coordinates (ICRF)   : RA = 11 43 28.4623, DE = +37 14 26.473  [2]
 Star Magnitudes           : G = 7.93 mag, RP = 7.12 mag, BP = 8.64 mag
 Object Magnitude          : V = 17.73 mag
 Estimated Magnitude Drop  : 9.8 mag
 Estimated Max. Duration   : 2.0 sec
 Object Mean Diameter      : 38.1 km  (src: astorb)
 Speed of the shadow       : 18.7 km/s
 Elongation to Moon & Sun  : 79° (sunlit = 98%), Sun = 91°
 Cross-track uncertainty   : 3.3 mas = 12 km = 0.33 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#70
 Note                      : FP:true

 
 [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
(If error 404: link not valid which means no data available)

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