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2023-09-12 / TYC 68-00951-1 / (598) Octavia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Martin Gutekunst O+ CCD L280 DE GPS 00:54:09 00:54:33.288 00:54:39.789 00:55:07 0.003 0.090 6.50 52.6
2 show Manfred Simon O+ VID M203 DE NTP 00:53:36 00:54:29.35 00:54:36.89 00:55:03 0.02 0.02 7.54 61.1
3 show Werner Hasubick O+ VID M440 DE GPS 00:54:36 00:00:00.0 00:54:38.313 00:54:57 0.0 0.1
4 show Karl-Ludwig Bath O+ CCD T180 DE NTP 00:52:00 00:54:10.98 00:54:19.33 00:56:00 0.11 0.10 8.35 67.6
5 show Andreas Schweizer O- VID L107 CH GPS 00:53:16 00:55:16
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#62 : fefcdbb6-a6fb-40dc-bb70-2b1533b7a424 [db: observed]

Using prediction fefcdbb6-a6fb-40dc-bb70-2b1533b7a424 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:
Ellipse profile fit was not successful. Trying circular fit.

Circular profile fit was not successful ...








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).

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Sky projection (artificial light) for occ. time: 2023-09-12, 00:54 UT (JD = 2460199.538)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 56081.010.891 222°, -8° 2.457401e62798.50.0° 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] : fefcdbb6-a6fb-40dc-bb70-2b1533b7a424 [observed]

 Occultation Date + Time   : 2023-09-12 at 01:00:51 UT +/- 0.04 min  [1]
 Object Designation        : (598) Octavia
 Orbit Class               : MBA
 Star Designation          : GDR3 3271632896109453696
 Star Coordinates (ICRF)   : RA = 03 44 03.4591, DE = +03 35 00.897  [2]
 Star Magnitudes           : G = 8.74 mag, RP = 7.82 mag, BP = 9.64 mag
 Object Magnitude          : V = 13.3 mag
 Estimated Magnitude Drop  : 4.6 mag
 Estimated Max. Duration   : 9.0 sec
 Object Mean Diameter      : 72 km  (src: astorb)
 Speed of the shadow       : 8.1 km/s
 Elongation to Moon & Sun  : 83° (sunlit = 8%), Sun = 113°
 Cross-track uncertainty   : 9.3 mas = 9 km = 0.14 path-width (1-sig)
 RUWE and duplicate source : 1.12 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#62

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

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