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2017-12-10 / TYC 1798-00616-1 / (151) Abundantia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Ted Blank O+ VID M240 US GPS++ 01:41:58.42 01:42:00.39 0.06 0.06 1.97 20.5
2 show Paul Maley O+ VID M200 US GPS++ 01:41:57.20 01:41:59.87 0.05 0.05 2.67 27.8
3 show Steve Messner O+ VID M200 US GPS++ 01:39:24.53 01:39:28.26 0.02 0.02 3.73 38.8
4 show Bob Dunford O+ VID M360 US GPS++ 01:39:12.28 01:39:15.31 0.01 0.01 3.03 31.5
5 show Carlo Gualdoni O+ VID M250 IT GPS++ 01:26:22 01:28:23.88 01:28:27.36 01:30:22 0.08 0.04 3.48 36.2
6 show Fausto Delucchi O+ VIS M300 CH RAD+ 01:28:10 01:28:25.25 01:28:29.34 01:30:00 4.09 42.5
7 show Alberto Ossola O+ VID M230 CH GPS++ 01:27:00 01:28:26.34 01:28:29.62 01:30:00 0.08 0.16 3.28 34.1
8 show Andrea Manna O- VID M200 CH 01:27:29 01:31:08
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

8 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#67 : dcf44b5c-dba3-43af-a391-7a2e5329c23f [db: observed]

Using prediction dcf44b5c-dba3-43af-a391-7a2e5329c23f 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 = 59 x 39 km
a',b' = 29.4, 19.5 km
X0,Y0 = 273.3, 27.6 km
Mean diameter = 48 km

From 7 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: 2017-12-10, 01:41 UT (JD = 2458097.570)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 46251.09.864 188°, 32° 2.457241e6856.60.0° None2020-10-05 not scaled 2019-10-23
# 46261.09.864 3°, 16° 2.457241e6856.60.0° 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] : dcf44b5c-dba3-43af-a391-7a2e5329c23f [observed]

 Occultation Date + Time   : 2017-12-10 at 01:34:50 UT +/- 0.01 min  [1]
 Object Designation        : (151) Abundantia
 Orbit Class               : MBA
 Star Designation          : GDR3 0068211850257704704
 Star Coordinates (ICRF)   : RA = 03 37 07.4857, DE = +24 00 14.571  [2]
 Star Magnitudes           : G = 10.99 mag, RP = 10.51 mag, BP = 11.31 mag
 Object Magnitude          : V = 13.13 mag
 Estimated Magnitude Drop  : 2.3 mag
 Estimated Max. Duration   : 4.4 sec
 Object Mean Diameter      : 45 km  (src: astorb)
 Speed of the shadow       : 10.4 km/s
 Elongation to Moon & Sun  : 107° (sunlit = 53%), Sun = 159°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.05 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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