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2023-04-11 / UCAC4 568-033264 / (2848) ASP

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Bernat Garreta O+ CCD M200 ES NTP 20:01:27 20:03:26.59 20:03:26.97 20:05:29 0.19 0.19 0.38 8.4
2 show Antoni Selva O+ VID M500 ES GPS 20:01:36 20:03:25.340 20:03:26.420 20:05:34 0.06 0.06 1.08 23.9
3 show Javier Prat, Periko Martorell O+ CCD M300 ES GPS 20:02:08 20:03:11.13 20:03:12.12 20:03:39 0.09 0.09 0.99 21.9
4 show Jordi Marco O- CCD M235 ES NTP 20:01:31 20:05:19
5 show Carles Schnabel O- VID M400 ES GPS 20:01:24 20:04:23
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

5 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#53 : e1c6672a-8e44-49b8-a4b7-5b6d0699eb4a [db: observed]

Using prediction e1c6672a-8e44-49b8-a4b7-5b6d0699eb4a 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:
Ellipse profile fit was not successful. Trying circular fit.

Circular diameter = 23 km

From 3 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).

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : e1c6672a-8e44-49b8-a4b7-5b6d0699eb4a [observed]

 Occultation Date + Time   : 2023-04-11 at 20:01:14 UT +/- 0.01 min  [1]
 Object Designation        : (2848) ASP
 Orbit Class               : MBA
 Star Designation          : GDR3 3379633692763141632
 Star Coordinates (ICRF)   : RA = 06 46 33.9482, DE = +23 34 57.633  [2]
 Star Magnitudes           : G = 13.1 mag, RP = 12.66 mag, BP = 13.37 mag
 Object Magnitude          : V = 17.8 mag
 Estimated Magnitude Drop  : 4.7 mag
 Estimated Max. Duration   : 1.1 sec
 Object Mean Diameter      : 25 km  (src: astorb)
 Speed of the shadow       : 22.1 km/s
 Elongation to Moon & Sun  : 170° (sunlit = 67%), Sun = 79°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.07 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#53

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

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