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2007-04-16 / TYC 5530-00985-1 / (297) Caecilia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show J.M. Lopez et al O+ CCD M500 FR GPS 22:37:09 22:38:08.37 22:38:12.09 22:39:09 3.72 51.0
2 show Eric Barbotin O+ CCD M225 FR GPS++ 22:35:01 22:38:29.62 22:38:33.04 22:45:13 1 1 3.42 46.9
3 show E. Frappa/A. Klotz O- CCD M250 FR 22:37:04 22:40:11
4 show Maurice Audejean O- CCD M320 FR 22:25:00 22:45:50
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#61 : 9f10ffff-c7cf-4de4-b66e-ce90ff0a46cc [db: observed]

Using prediction 9f10ffff-c7cf-4de4-b66e-ce90ff0a46cc 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 = -1698.1, -9.0 km
Circular diameter = 89 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: 2007-04-16, 22:37 UT (JD = 2454207.442)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 470None4.151 223°, -53° 2.451051e63156.40.0° NoneNone not scaled 2013-02-11
# 471None4.151 47°, -33° 2.451051e63156.40.0° 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] : 9f10ffff-c7cf-4de4-b66e-ce90ff0a46cc [observed]

 Occultation Date + Time   : 2007-04-16 at 22:36:02 UT +/- 0.03 min  [1]
 Object Designation        : (297) Caecilia
 Orbit Class               : MBA
 Star Designation          : GDR3 3577737070720996864
 Star Coordinates (ICRF)   : RA = 12 27 16.3503, DE = -10 47 36.971  [2]
 Star Magnitudes           : G = 11.65 mag, RP = 10.99 mag, BP = 12.15 mag
 Object Magnitude          : V = 14.32 mag
 Estimated Magnitude Drop  : 2.8 mag
 Estimated Max. Duration   : 2.9 sec
 Object Mean Diameter      : 40 km  (src: astorb)
 Speed of the shadow       : 13.7 km/s
 Elongation to Moon & Sun  : 171° (sunlit = 0%), Sun = 162°
 Cross-track uncertainty   : 6.3 mas = 11 km = 0.28 path-width (1-sig)
 RUWE and duplicate source : 1.03 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#61

 Object is a Gaia mass determination target !

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

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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Aladin Sky Atlas
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