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2021-03-08 / 4UC 358-076415 / (46) Hestia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Matthieu Conjat O+ CCD M400 FR NTP 02:35:53 02:37:00.30 02:37:11.36 02:38:12 0.50 0.50 11.06 91.8
2 show Pietro Baruffetti O+ VID M300 IT GPS++ 02:36:02 02:37:25.42 02:37:40.14 02:39:02 0.32 0.32 14.72 122.2
3 show Gianni Galli O- CCD M356 IT 02:36:41 02:39:09
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#179 : 910cda5e-9812-4d2a-9958-34f599f4289a [db: observed]

Using prediction 910cda5e-9812-4d2a-9958-34f599f4289a 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 = -294.7, 20.5 km
Circular diameter = 122 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: 2021-03-08, 02:37 UT (JD = 2459281.609)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 43833.021.040 291°, 12° 2.443823e615458.60.0° None2019-10-03 not scaled 2019-07-19
# 43843.021.040 110°, 7° 2.443823e615458.60.0° None2019-10-03 not scaled 2019-07-19
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] : 910cda5e-9812-4d2a-9958-34f599f4289a [observed]

 Occultation Date + Time   : 2021-03-08 at 02:41:49 UT +/- 0.01 min  [1]
 Object Designation        : (46) Hestia
 Orbit Class               : MBA
 Star Designation          : GDR3 6248307328326541952
 Star Coordinates (ICRF)   : RA = 15 55 56.2331, DE = -18 32 58.122  [2]
 Star Magnitudes           : G = 11.86 mag, RP = 11.1 mag, BP = 12.48 mag
 Object Magnitude          : V = 13.79 mag
 Estimated Magnitude Drop  : 2.1 mag
 Estimated Max. Duration   : 15.0 sec
 Object Mean Diameter      : 124 km  (src: astorb)
 Speed of the shadow       : 8.3 km/s
 Elongation to Moon & Sun  : 43° (sunlit = 28%), Sun = 107°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.1 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#179

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

More Data and Informations
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