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2022-02-15 / TYC 0826-00981-1 / (924) Toni

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Ferran Casarramona O+ VID M200 ES GPS++ 22:54:02 22:56:49.10 22:56:53.17 23:00:00 0.05 0.02 4.07 59.4
2 show Miguel Sanchez O+ CCD M200 ES NTP+ 22:51:48 22:56:57.65 22:57:01.89 23:01:48 0.08 0.08 4.24 61.9
3 show Benjamin Hernandez O+ CCD M280 ES NTP 22:52:10 22:56:57.44 22:57:02.26 22:59:10 0.50 0.50 4.82 70.4
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#61 : 96a9c5d5-437f-4cfe-af68-beff76d735d8 [db: observed]

Using prediction 96a9c5d5-437f-4cfe-af68-beff76d735d8 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 = 76 x 64 km
a',b' = 38.2, 31.9 km
X0,Y0 = -812.3, 17.8 km
Mean diameter = 70 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: 2022-02-15, 22:56 UT (JD = 2459626.456)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 58471.019.437 40°, 32° 2.457249e62377.50.0° None2020-10-05 not scaled 2019-10-23
# 58481.019.438 214°, 37° 2.457249e62377.50.0° 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] : 96a9c5d5-437f-4cfe-af68-beff76d735d8 [observed]

 Occultation Date + Time   : 2022-02-15 at 22:54:07 UT +/- 0.01 min  [1]
 Object Designation        : (924) Toni
 Orbit Class               : MBA
 Star Designation          : GDR3 0617295892604874368
 Star Coordinates (ICRF)   : RA = 09 30 19.8121, DE = +12 57 03.103  [2]
 Star Magnitudes           : G = 11.25 mag, RP = 10.68 mag, BP = 11.65 mag
 Object Magnitude          : V = 14.12 mag
 Estimated Magnitude Drop  : 2.9 mag
 Estimated Max. Duration   : 5.9 sec
 Object Mean Diameter      : 86 km  (src: astorb)
 Speed of the shadow       : 14.6 km/s
 Elongation to Moon & Sun  : 7° (sunlit = 99%), Sun = 173°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.35 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61

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

More Data and Informations
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