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2022-11-08 / TYC 2923-00251-1 / (624) Hektor

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Olivier Schreurs O+ VID M254 BE GPS++ 05:18:15 05:20:18.91 05:20:22.03 05:22:06 0.08 0.08 3.12 35.3
2 show Henk De Groot O+ VID M356 NL GPS++ 05:16:32 05:20:16.46 05:20:34.76 05:24:52 0.05 0.05 18.30 206.8
3 show Jan-Maarten Winkel O+ VID M356 NL GPS++ 05:17:54 05:20:14.82 05:20:33.38 05:22:54 0.16 0.16 18.56 209.7
4 show Stefano Sposetti O- VID M280 CH 05:16:18 05:21:00
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#120 (23-01-08) : 465ea371-5ea9-4a6d-a02d-d018f3a7d14d [db: observed]

Using prediction 465ea371-5ea9-4a6d-a02d-d018f3a7d14d for map and profile fit

Ellipse and circular profile fits to the timings (chords)

 Auto-Fit Result:
Size = 257 x 149 km
a',b' = 128.5, 74.6 km
X0,Y0 = -1644.1, 21.8 km
Mean diameter = 196 km

From 3 chords (VID)








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: 2022-11-08, 05:19 UT (JD = 2459891.724)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 232None6.921 333°, -31° 2.435957e623934.70.0° None2016-06-27 175.0 +/- 21.0 km 2016-06-27
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] : 465ea371-5ea9-4a6d-a02d-d018f3a7d14d [observed]

 Occultation Date + Time   : 2022-11-08 at 05:22:29 UT +/- 0.12 min  [1]
 Object Designation        : (624) Hektor
 Star Designation          : GDR3 0196769837858660864
 Star Coordinates (ICRF)   : RA = 05 48 19.6389, DE = +44 29 01.528  [2]
 Star Magnitudes           : G = 10.92 mag, RP = 10.43 mag, BP = 11.24 mag
 Object Magnitude          : V = 14.89 mag
 Estimated Magnitude Drop  : 4.0 mag
 Estimated Max. Duration   : 9.8 sec
 Object Mean Diameter      : 111 km  (src: astorb+H10)
 Speed of the shadow       : 11.3 km/s
 Elongation to Moon & Sun  : 49° (sunlit = 100%), Sun = 134°
 Cross-track uncertainty   : 2.0 mas = 6 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#120 (23-01-08)

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

More Data and Informations
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