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2016-01-17 / TYC 0075-00715-1 / (41) Daphne

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Patrice Le Guen O+ CCD L50 FR NTP 22:35:57 22:41:42.92 22:42:03.32 22:50:55 0.63 0.25 20.40 167.3
2 show Lionel Ruiz O+ CCD L12 FR NTP 22:41:08 22:41:45.1 22:42:05.9 22:43:01 1.1 1.1 20.80 170.6
3 show F. Signoret et al O+ VID M406 FR GPS++ 22:30:33 22:41:43.78 22:41:53.30 22:48:20 0.02 0.02 9.52 78.1
4 show G. Aufranc et al O+ VID M406 FR GPS++ 22:39:00 22:41:44.00 22:41:53.68 22:45:00 0.02 0.02 9.68 79.4
5 show Michel Deconinck O+ VIS B126 FR RAD 22:38:10 22:41:48.15 22:42:10.78 22:45:50 0.30 0.70 22.63 185.6
6 show Matthieu Conjat O+ CCD L130 FR NTP 22:38:45 22:41:47.07 22:41:47.99 22:45:07 1 1 0.92 7.5
7 show Luc Maurin O+ CCD L58 FR GPS 22:41:01 22:41:55.47 22:42:16.20 22:45:54 0.4 0.4 20.73 170.0
8 show Daniel Verilhac O+ VID M210 FR GPS++ 22:31:00 22:42:05.39 22:42:19.97 22:45:28 0.08 0.08 14.58 119.6
9 show Guy Brabant O+ VID M203 FR GPS++ 22:35:15 22:42:06.86 22:42:21.83 22:49:46 0.03 0.03 14.97 122.8
10 show Jean-Louis Penninckx O+ CCD M203 FR RAD 22:40:07 22:42:27.25 22:42:33.34 22:44:07 6.09 49.9
11 show Eberhard Bredner O+ VID M203 FR GPS++ 22:30:00 22:42:42.25 22:42:59.21 22:50:00 0.16 0.16 16.96 139.1
12 show Olivier Dechambre O+ CCD M279 FR GPS+ 22:32:16 22:43:03.62 22:43:18.77 22:52:16 0.02 0.02 15.15 124.2
13 show Jean Lecacheux O+ VID L21 FR GPS++ 22:40:01 22:43:03.45 22:43:17.05 22:47:00 0.75 0.75 13.60 111.5
14 show Pietro Baruffetti O- VID M200 IT 22:40:07 22:44:07
15 show Stefano Sposetti O- VID M280 CH 22:09:40 22:50:50
16 show Roland Decellier O- VIS M406 BE 22:42:06 22:46:34
17 show Guy Huys O- VIS M298 BE 22:42:06 22:46:34
18 show Benoit Goffin O- VIS M200 BE 22:42:06 22:46:34
19 show Harrie Rutten O- VID M356 NL 22:30:00 22:51:30
20 show Steve Hubbard O- VIS M210 UK 22:41:00 22:51:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

20 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#152 : d9c0a00c-6674-4772-9dc4-b129d9d63300 [db: observed]

Using prediction d9c0a00c-6674-4772-9dc4-b129d9d63300 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 = 211 x 87 km
a',b' = 105.5, 43.3 km
X0,Y0 = -3138.0, 61.6 km
Mean diameter = 135 km

From 13 chords (VID,VIS,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).

Check SiMDA for size and mass data.

Check Johnston Archive for satellites.

Sky projection (artificial light) for occ. time: 2016-01-17, 22:41 UT (JD = 2457405.445)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 131None5.988 198°, -32° 2.44477179382e612633.70.0° size from AO is 186+/-27 km2013-07-23 187.0 +/- 20.0 km 2011-03-28
# 17934.05.988 200°, -32° 2.44477179382e612633.70.0° None2019-01-11 187.0 +/- 7.0 km 2018-08-24
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] : d9c0a00c-6674-4772-9dc4-b129d9d63300 [observed]

 Occultation Date + Time   : 2016-01-17 at 22:40:56 UT +/- 0.01 min  [1]
 Object Designation        : (41) Daphne
 Orbit Class               : MBA
 Star Designation          : GDR3 3279790722631921280
 Star Coordinates (ICRF)   : RA = 04 26 25.8879, DE = +01 40 43.281  [2]
 Star Magnitudes           : G = 9.3 mag, RP = 8.58 mag, BP = 9.89 mag
 Object Magnitude          : V = 13.18 mag
 Estimated Magnitude Drop  : 3.9 mag
 Estimated Max. Duration   : 21.4 sec
 Object Mean Diameter      : 174 km  (src: astorb)
 Speed of the shadow       : 8.2 km/s
 Elongation to Moon & Sun  : 29° (sunlit = 61%), Sun = 125°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#152

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

More Data and Informations
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