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2022-07-07 / TYC-6847-00998-1 / (222) Lucia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show R. Iglesias et al O+ CCD M280 ES GPS 01:22:27 01:23:08.96 01:23:14.39 01:24:07 1.00 1.00 5.43 52.7
2 show Matthieu Conjat O+ CCD M400 FR NTP 01:19:46 01:22:31.75 01:22:34.01 01:23:33 0.50 0.50 2.26 21.9
3 show Jesus Delgado O- CCD M280 ES 01:20:46 01:26:46
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#72 : 9ad0a6e8-0bba-4add-926e-2f9f6d96b89a [db: observed]

Using prediction 9ad0a6e8-0bba-4add-926e-2f9f6d96b89a 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 = 482.3, 52.4 km
Circular diameter = 116 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).

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Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2022-07-07, 01:23 UT (JD = 2459767.558)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 523None7.837 293°, 49° 2.443278e616489.60.0° NoneNone not scaled 2013-02-11
# 524None7.837 106°, 50° 2.443278e616489.60.0° NoneNone not scaled 2013-02-11
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] : 9ad0a6e8-0bba-4add-926e-2f9f6d96b89a [observed]

 Occultation Date + Time   : 2022-07-07 at 01:28:25 UT +/- 0.02 min  [1]
 Object Designation        : (222) Lucia
 Orbit Class               : MBA
 Star Designation          : GDR3 4065456338332052608
 Star Coordinates (ICRF)   : RA = 18 13 54.6043, DE = -24 24 39.712  [2]
 Star Magnitudes           : G = 9.63 mag, RP = 9.41 mag, BP = 9.73 mag
 Object Magnitude          : V = 13.46 mag
 Estimated Magnitude Drop  : 3.9 mag
 Estimated Max. Duration   : 5.7 sec
 Object Mean Diameter      : 55 km  (src: astorb)
 Speed of the shadow       : 9.7 km/s
 Elongation to Moon & Sun  : 79° (sunlit = 50%), Sun = 168°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.65 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#72

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

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