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2020-12-30 / TYC 1442-01176-1 / (247) Eukrate

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Jiri Kubanek O+ CCD M203 CZ GPS++ 03:49:34 03:51:27.15 03:51:43.99 03:53:41 0.03 0.03 16.84 96.0
2 show Karel Halir O+ VID M507 CZ GPS++ 03:49:36 03:51:24.60 03:51:42.58 03:53:34 0.02 0.02 17.98 102.5
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#94 (23-01-08) : a80f8a1a-801c-4913-8185-c804548c8755 [db: observed]

Using prediction a80f8a1a-801c-4913-8185-c804548c8755 for map and profile fit

Ellipse and circular profile fits to the timings (chords)

 Auto-Fit Result:
X0,Y0 = -1398.5, 40.6 km
Circular diameter = 113 km

From 2 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: 2020-12-30, 03:51 UT (JD = 2459213.666)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 1207None12.095 103°, -22° 2.44375e615463.70.0° 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] : a80f8a1a-801c-4913-8185-c804548c8755 [observed]

 Occultation Date + Time   : 2020-12-30 at 03:59:01 UT +/- 0.04 min  [1]
 Object Designation        : (247) Eukrate
 Star Designation          : GDR3 3925367703569712128
 Star Coordinates (ICRF)   : RA = 12 00 18.0170, DE = +16 19 26.148  [2]
 Star Magnitudes           : G = 10.16 mag, RP = 9.69 mag, BP = 10.46 mag
 Object Magnitude          : V = 13.08 mag
 Estimated Magnitude Drop  : 3.0 mag
 Estimated Max. Duration   : 23.8 sec
 Object Mean Diameter      : 134 km  (src: astorb+H10)
 Speed of the shadow       : 5.7 km/s
 Elongation to Moon & Sun  : 74° (sunlit = 100%), Sun = 105°
 Cross-track uncertainty   : 8.7 mas = 13 km = 0.10 path-width (1-sig)
 RUWE and duplicate source : 0.86 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#94 (23-01-08)

 
 [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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