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2021-12-10 / TYC 1788-00301-1 / (2323) Zverev

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Jerome Delpau O+ CCD L75 FR NTP 18:55:00 18:59:50.31 18:59:54.08 19:03:01 0.50 0.50 3.77 33.6
2 show Eberhard Bredner O+ VID M254 DE RAD++ 18:50:00 18:58:33.72 18:58:37.56 19:10:00 0.04 0.04 3.84 34.2
3 show Anonymous O- CCD V112 FR 18:59:06 19:01:04
4 show Bruno Guillet O- CCD V112 FR 18:57:29 19:01:28
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: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#59 : b0e42ca7-6322-466e-9232-4c5e0260ecd6 [db: observed]

Using prediction b0e42ca7-6322-466e-9232-4c5e0260ecd6 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 = 1001.3, 24.7 km
Circular diameter = 35 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: 2021-12-10, 18:59 UT (JD = 2459559.291)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 43541.03.921 334°, 72° 2.449797e69762.30.0° 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] : b0e42ca7-6322-466e-9232-4c5e0260ecd6 [observed]

 Occultation Date + Time   : 2021-12-10 at 18:56:00 UT +/- 0.03 min  [1]
 Object Designation        : (2323) Zverev
 Orbit Class               : MBA
 Star Designation          : GDR3 0111095140204011904
 Star Coordinates (ICRF)   : RA = 03 20 22.8623, DE = +24 31 18.577  [2]
 Star Magnitudes           : G = 9.31 mag, RP = 8.86 mag, BP = 9.6 mag
 Object Magnitude          : V = 15.39 mag
 Estimated Magnitude Drop  : 6.1 mag
 Estimated Max. Duration   : 2.1 sec
 Object Mean Diameter      : 19 km  (src: astorb)
 Speed of the shadow       : 8.9 km/s
 Elongation to Moon & Sun  : 69° (sunlit = 47%), Sun = 154°
 Cross-track uncertainty   : 3.7 mas = 4 km = 0.26 path-width (1-sig)
 RUWE and duplicate source : 1.13 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#59

 Object is a Gaia mass determination target !

 [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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