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2017-11-21 / 2UC 40300883 / (151) Abundantia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Carlo Gualdoni O+ VID M250 IT GPS++ 23:09:06 23:10:01.26 23:10:03.89 23:11:01 0.12 0.05 2.63 31.8
2 show Alberto Ossola O+ VID M230 CH GPS++ 23:08:30 23:10:02.50 23:10:05.38 23:11:30 0.17 0.17 2.88 34.8
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#67 : f4db021d-6852-4e9b-9f3f-39a7a6eb6349 [db: observed]

Using prediction f4db021d-6852-4e9b-9f3f-39a7a6eb6349 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 = 80.5, 35.6 km
Circular diameter = 40 km

From 2 chords (VID)








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: 2017-11-21, 23:10 UT (JD = 2458079.465)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 46251.09.864 188°, 32° 2.457241e6838.50.0° None2020-10-05 not scaled 2019-10-23
# 46261.09.864 3°, 16° 2.457241e6838.50.0° 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] : f4db021d-6852-4e9b-9f3f-39a7a6eb6349 [observed]

 Occultation Date + Time   : 2017-11-21 at 23:10:02 UT +/- 0.01 min  [1]
 Object Designation        : (151) Abundantia
 Orbit Class               : MBA
 Star Designation          : GDR3 0065854566048480640
 Star Coordinates (ICRF)   : RA = 03 55 32.5796, DE = +24 21 13.474  [2]
 Star Magnitudes           : G = 12.36 mag, RP = 11.94 mag, BP = 12.62 mag
 Object Magnitude          : V = 12.76 mag
 Estimated Magnitude Drop  : 1.0 mag
 Estimated Max. Duration   : 3.8 sec
 Object Mean Diameter      : 45 km  (src: astorb)
 Speed of the shadow       : 12.1 km/s
 Elongation to Moon & Sun  : 143° (sunlit = 11%), Sun = 176°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 0.92 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#67

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

More Data and Informations
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