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2018-05-04 / TYC 4977-00665-1 / (314) Rosalia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Esdert Edens O+ VID M250 NL GPS++ 01:49:47 01:52:45.15 01:52:49.53 01:55:47 0.04 0.02 4.38 65.3
2 show Henk Bulder O+ VIS M305 NL GPS 01:51:00 01:52:42.3 01:52:44.4 01:53:30 0.2 0.2 2.10 31.3
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#76 : 5e383195-f37b-48b0-b45b-2e3a165f86ca [db: observed]

Using prediction 5e383195-f37b-48b0-b45b-2e3a165f86ca 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 = -2381.0, -66.9 km
Circular diameter = 67 km

From 2 chords (VID,VIS)








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: 2018-05-04, 01:52 UT (JD = 2458242.578)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 51241.020.468 293°, 48° 2.457278e6964.60.0° None2020-10-05 not scaled 2019-10-23
# 51251.020.467 103°, 28° 2.457278e6964.60.0° None2020-10-05 not scaled 2019-10-23
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] : 5e383195-f37b-48b0-b45b-2e3a165f86ca [observed]

 Occultation Date + Time   : 2018-05-04 at 01:52:53 UT +/- 0.01 min  [1]
 Object Designation        : (314) Rosalia
 Orbit Class               : MBA
 Star Designation          : GDR3 3652830416362926592
 Star Coordinates (ICRF)   : RA = 14 22 26.5951, DE = -00 50 30.194  [2]
 Star Magnitudes           : G = 10.43 mag, RP = 9.72 mag, BP = 11.01 mag
 Object Magnitude          : V = 15.43 mag
 Estimated Magnitude Drop  : 5.0 mag
 Estimated Max. Duration   : 3.8 sec
 Object Mean Diameter      : 57 km  (src: astorb)
 Speed of the shadow       : 14.9 km/s
 Elongation to Moon & Sun  : 56° (sunlit = 85%), Sun = 164°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76

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

More Data and Informations
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