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2022-08-15 / TYC 2395-00468-1 / (1116) Catriona

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Leszek Benedyktowicz O+ CCD M203 PL GPS+ 23:20:05 23:20:43.82 23:20:44.82 23:20:54 0.01 0.01 1.00 32.8
2 show Marcin Filipek O+ CCD M250 PL GPS++ 23:20:00 23:20:44.34 23:20:45.39 23:21:30 0.01 0.01 1.05 34.4
3 show Marek Zawilski O+ CCD M203 PL GPS+ 23:20:00 23:20:47.85 23:20:48.88 23:21:22 0.03 0.02 1.03 33.8
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#54 : 7c2ed1d1-0280-4e68-b908-f1a814cf89ab [db: observed]
JPL#54 : e00a561a-e8ed-4c46-85c3-49d05caf3bd3 [db: observed]

Using prediction 7c2ed1d1-0280-4e68-b908-f1a814cf89ab 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 = 59 x 35 km
a',b' = 29.5, 17.4 km
X0,Y0 = 1623.0, 12.9 km
Mean diameter = 45 km

From 3 chords (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: 2022-08-15, 23:19 UT (JD = 2459807.472)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 42391.08.836 292°, 18° 2.450774e69033.50.0° 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] : 7c2ed1d1-0280-4e68-b908-f1a814cf89ab [observed]

 Occultation Date + Time   : 2022-08-15 at 23:22:02 UT +/- 0.01 min  [1]
 Object Designation        : (1116) Catriona
 Orbit Class               : MBA
 Star Designation          : GDR3 0186082005017777792
 Star Coordinates (ICRF)   : RA = 04 55 31.7697, DE = +35 23 54.683  [2]
 Star Magnitudes           : G = 8.8 mag, RP = 7.93 mag, BP = 9.58 mag
 Object Magnitude          : V = 14.82 mag
 Estimated Magnitude Drop  : 6.0 mag
 Estimated Max. Duration   : 1.2 sec
 Object Mean Diameter      : 39 km  (src: astorb)
 Speed of the shadow       : 32.8 km/s
 Elongation to Moon & Sun  : 63° (sunlit = 81%), Sun = 67°
 Cross-track uncertainty   : 1.7 mas = 3 km = 0.08 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#54

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

More Data and Informations
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