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2011-01-24 / TYC 0178-02563-1 / (694) Ekard

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Riccardo Mancini O+ CCD M250 IT NTP 00:57:35 00:57:51.7 00:57:58.8 00:58:25 0.5 0.5 7.10 107.2
2 show Mauro Bachini O+ CCD M400 IT NTP 00:57:50 00:57:53.0 00:58:00.0 00:58:25 0.5 0.5 7.00 105.7
3 show P. Baruffetti et al O+ VID M200 IT GPS++ 00:56:30 00:57:58.22 00:58:05.04 00:59:30 0.11 0.11 6.82 103.0
4 show Giancarlo Bonatti O+ CCD M300 IT RAD 00:57:54 00:57:58.1 00:58:05.0 00:58:19 0.8 0.5 6.90 104.2
5 show R. Di Luca et al O- VID M250 IT 00:52:00 01:05:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#57 : a24283b2-83db-4828-990a-3cf96cb4352f [db: observed]
JPL#57 : 279330c8-a7bc-4209-8884-8bccc4cbc9fe [db: observed]
JPL#57 : 21cf54fc-7924-4113-abf1-379e06d12846 [db: observed]

Using prediction a24283b2-83db-4828-990a-3cf96cb4352f 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:
Size = 338 x 15 km
a',b' = 169.1, 7.6 km
X0,Y0 = -878.3, 25.0 km
Mean diameter = 71 km

From 4 chords (VID,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: 2011-01-24, 00:57 UT (JD = 2455585.540)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 241None5.922 266°, 51° 2.44559e69995.50.0° None2010-04-15 not scaled 2008-01-30
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] : a24283b2-83db-4828-990a-3cf96cb4352f [observed]

 Occultation Date + Time   : 2011-01-24 at 00:59:57 UT +/- 0.01 min  [1]
 Object Designation        : (694) Ekard
 Orbit Class               : MBA
 Star Designation          : GDR3 3134542556546937216
 Star Coordinates (ICRF)   : RA = 07 31 20.3803, DE = +00 25 11.803  [2]
 Star Magnitudes           : G = 11.88 mag, RP = 11.81 mag, BP = 11.92 mag
 Object Magnitude          : V = 14.04 mag
 Estimated Magnitude Drop  : 2.3 mag
 Estimated Max. Duration   : 6.0 sec
 Object Mean Diameter      : 91 km  (src: astorb)
 Speed of the shadow       : 15.1 km/s
 Elongation to Moon & Sun  : 66° (sunlit = 77%), Sun = 157°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.85 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#57

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

More Data and Informations
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