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2021-02-26 / 4UC 496-054452 / (1724) Vladimir

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Carles Schnabel O+ VID M400 ES GPS++ 23:54:52 23:56:39.53 23:56:41.57 23:58:49 0.04 0.04 2.04 23.3
2 show Jorge Juan O+ VID M406 ES GPS++ 23:55:23 23:56:40.19 23:56:42.43 23:57:18 0.16 0.16 2.24 25.5
3 show Jordi Marco O? CCD M235 ES NTP 23:54:01 23:56:38.68 23:56:38.87 23:58:36 0.19 0.19 0.19 2.2
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: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#64 : e86d0b22-691e-44ee-8d64-4b9f74406919 [db: observed]

Using prediction e86d0b22-691e-44ee-8d64-4b9f74406919 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 = 54 x 28 km
a',b' = 26.9, 13.9 km
X0,Y0 = -2248.3, 12.8 km
Mean diameter = 39 km

From 3 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: 2021-02-26, 23:56 UT (JD = 2459272.497)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 46991.012.568 24°, 37° 2.457278e61994.50.0° 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] : e86d0b22-691e-44ee-8d64-4b9f74406919 [observed]

 Occultation Date + Time   : 2021-02-26 at 23:54:46 UT +/- 0.02 min  [1]
 Object Designation        : (1724) Vladimir
 Orbit Class               : MBA
 Star Designation          : GDR3 0588909560392780544
 Star Coordinates (ICRF)   : RA = 09 30 00.2272, DE = +09 05 31.360  [2]
 Star Magnitudes           : G = 12.15 mag, RP = 11.72 mag, BP = 12.42 mag
 Object Magnitude          : V = 15.16 mag
 Estimated Magnitude Drop  : 3.1 mag
 Estimated Max. Duration   : 3.1 sec
 Object Mean Diameter      : 35 km  (src: astorb)
 Speed of the shadow       : 11.4 km/s
 Elongation to Moon & Sun  : 16° (sunlit = 100%), Sun = 162°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.28 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
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