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2022-08-27 / 4UC 494-011342 / (1021) Flammario

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Tim Haymes O+ CCD M280 UK GPS++ 02:24:00 02:25:15.72 02:25:19.18 02:27:00 0.17 0.17 3.46 96.9
2 show Simon Kidd O+ CCD M350 UK GPS++ 02:24:19 02:25:16.37 02:25:20.61 02:26:19 0.06 0.06 4.24 118.7
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#71 : 7af14b8f-e9ff-4159-a1f9-70ffc718f59c [db: observed]

Using prediction 7af14b8f-e9ff-4159-a1f9-70ffc718f59c 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 = 92.1, -20.3 km
Circular diameter = 154 km

From 2 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: 2022-08-27, 02:24 UT (JD = 2459818.600)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 861None12.152 216°, 55° 2.448182e611636.60.0° NoneNone not scaled 2016-01-04
# 862None12.152 32°, 22° 2.448182e611636.60.0° NoneNone not scaled 2016-01-04
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] : 7af14b8f-e9ff-4159-a1f9-70ffc718f59c [observed]

 Occultation Date + Time   : 2022-08-27 at 02:27:26 UT +/- 0.01 min  [1]
 Object Designation        : (1021) Flammario
 Orbit Class               : MBA
 Star Designation          : GDR3 3338301989818244352
 Star Coordinates (ICRF)   : RA = 05 20 38.1806, DE = +08 40 27.279  [2]
 Star Magnitudes           : G = 13.5 mag, RP = 12.66 mag, BP = 14.23 mag
 Object Magnitude          : V = 13.32 mag
 Estimated Magnitude Drop  : 0.7 mag
 Estimated Max. Duration   : 3.6 sec
 Object Mean Diameter      : 99 km  (src: astorb)
 Speed of the shadow       : 28.0 km/s
 Elongation to Moon & Sun  : 73° (sunlit = 0%), Sun = 74°
 Cross-track uncertainty   : 3.0 mas = 4 km = 0.04 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#71

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

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