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2017-09-19 / TYC 0651-00137-1 / (44) Nysa

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Ferran Casarramona O+ VID M200 ES GPS++ 03:31:00 03:32:42.19 03:33:02.96 03:36:00 0.03 0.02 20.77 39.5
2 show Paul Maley O+ VID L80 ES GPS++ 03:26:00 03:29:11.89 03:29:31.10 03:30:00 0.10 0.10 19.21 36.5
3 show Joan Rovira O+ VID M200 ES GPS++ 03:24:57 03:28:52.78 03:29:25.16 03:35:05 0.04 0.06 32.38 61.5
4 show Jose Ripero O+ VIS M410 ES RAD 03:20:00 03:29:01.37 03:29:23.43 03:32:00 0.2 0.3 22.06 41.9
5 show F.J. Aceituno O- CCD M1500 ES 03:16:58 03:45:12
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: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#137 : 5a7c6892-4e79-413e-9ba1-8e9c34c37ba2 [db: observed]

Using prediction 5a7c6892-4e79-413e-9ba1-8e9c34c37ba2 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 = 61 km

From 4 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).

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Sky projection (artificial light) for occ. time: 2017-09-19, 03:31 UT (JD = 2458015.647)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 1333.06.421 101°, 51° 2.433226e624789.60.0° updated model2017-12-18 not scaled 2017-12-18
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] : 5a7c6892-4e79-413e-9ba1-8e9c34c37ba2 [observed]

 Occultation Date + Time   : 2017-09-19 at 03:51:43 UT +/- 0.18 min  [1]
 Object Designation        : (44) Nysa
 Orbit Class               : MBA
 Star Designation          : GDR3 0027814487382393600
 Star Coordinates (ICRF)   : RA = 03 06 14.3317, DE = +11 55 55.919  [2]
 Star Magnitudes           : G = 9.04 mag, RP = 8.25 mag, BP = 9.71 mag
 Object Magnitude          : V = 10.25 mag
 Estimated Magnitude Drop  : 1.5 mag
 Estimated Max. Duration   : 36.5 sec
 Object Mean Diameter      : 71 km  (src: astorb)
 Speed of the shadow       : 1.9 km/s
 Elongation to Moon & Sun  : 116° (sunlit = 1%), Sun = 129°
 Cross-track uncertainty   : 3.3 mas = 3 km = 0.05 path-width (1-sig)
 RUWE and duplicate source : 1.47 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#137

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

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