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2018-04-21 / TYC 0408-00029-1 / (130) Elektra

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Luca Rizzuti O+ CCD M200 IT NTP 00:26:27 00:30:47.13 00:31:04.05 00:33:57 0.05 0.05 16.92 164.1
2 show Ettore Marmo O+ CCD M250 IT NTP 00:03:15 00:30:52.16 00:31:09.15 00:35:00 1.0 1.0 16.99 164.8
3 show Alfonso Noschese O+ VID M300 IT GPS++ 00:24:05 00:30:38.55 00:30:55.03 00:37:04 0.1 0.1 16.48 159.9
4 show G. Isopi et al O+ CCD M800 IT GPS++ 00:17:00 00:30:52.50 00:31:07.98 00:43:52 15.48 150.2
5 show Claudio Costa O+ CCD M280 IT GPS++ 00:29:00 00:30:40.00 00:30:50.93 00:32:00 10.93 106.0
6 show Alessandro Marchini O+ CCD M300 IT NTP 00:29:30 00:31:04.90 00:31:20.80 00:32:30 0.20 0.20 15.90 154.2
7 show M. Bachini et al O+ CCD M400 IT NTP 00:09:14 00:31:13.70 00:31:29.29 00:39:17 0.36 0.36 15.59 151.2
8 show M. Mannucci et al O+ CCD M356 IT NTP 00:07:17 00:31:11.19 00:31:27.24 00:50:03 1.6 1.6 16.05 155.7
9 show Pietro Baruffetti O+ VID M200 IT GPS++ 00:28:31 00:31:16.80 00:31:31.50 00:34:32 0.04 0.04 14.70 142.6
10 show Michele Bigi O+ VID M200 IT GPS++ 00:28:00 00:31:16.81 00:31:31.41 00:35:00 0.04 0.04 14.60 141.6
11 show P. Bacci et al O+ CCD M600 IT GPS 00:29:47 00:31:15.3 00:31:31.8 00:34:16 1.5 1.5 16.50 160.0
12 show Roberto Bacci O+ CCD M405 IT NTP 00:25:00 00:31:16.5 00:31:31.9 00:41:00 1.5 1.0 15.40 149.4
13 show L. Leonelli et al O+ VID M400 IT GPS++ 00:20:00 00:31:16.04 00:31:32.36 00:35:00 0.07 0.07 16.32 158.3
14 show S. Orlandi et al O+ VID M355 IT GPS++ 00:25:00 00:31:15.95 00:31:32.19 00:35:00 0.20 0.20 16.24 157.5
15 show Roberto Di Luca O+ VID M250 IT GPS++ 00:26:00 00:31:16.42 00:31:32.76 00:34:00 0.08 0.08 16.34 158.5
16 show Gianni Galli O+ CCD M235 IT NTP 00:31:20 00:31:29.11 00:31:46.00 00:33:00 0.10 0.10 16.89 163.8
17 show Alberto Ossola O+ VID M230 CH GPS++ 00:28:30 00:31:33.43 00:31:49.60 00:34:30 0.05 0.04 16.17 156.8
18 show Stefano Sposetti O+ VID M200 CH GPS++ 00:22:50 00:31:34.65 00:31:50.89 00:40:02 0.09 0.09 16.24 157.5
19 show Andrea Manna O+ VID M200 CH GPS++ 00:24:03 00:31:34.72 00:31:50.92 00:40:26 0.04 0.04 16.20 157.1
20 show Stefano Sposetti O+ VID M200 CH GPS++ 00:30:40 00:31:34.78 00:31:50.99 00:32:20 0.08 0.08 16.21 157.2
21 show Stefano Sposetti O+ VID M280 CH GPS++ 00:30:56 00:31:35.05 00:31:51.23 00:32:19 0.02 0.02 16.18 156.9
22 show Peter Kocher O+ VID M500 CH GPS++ 00:25:00 00:31:41.90 00:31:58.94 00:35:00 0.02 0.02 17.04 165.3
23 show Martin Mutti O+ VID M320 CH GPS++ 00:31:40 00:31:42.25 00:31:58.68 00:32:01 0.02 0.02 16.43 159.4
24 show Francois Meyer O+ VID M355 FR GPS++ 00:28:00 00:31:49.03 00:32:04.95 00:34:00 0.08 0.08 15.92 154.4
25 show Jonas Schenker O+ VID M450 CH GPS++ 00:26:58 00:31:46.70 00:32:01.46 00:37:02 0.02 0.02 14.76 143.2
26 show Stefan Meister O+ VID M360 CH GPS++ 00:30:47 00:31:48.77 00:31:55.03 00:32:49 0.02 0.02 6.26 60.7
27 show A. Leroy/G. Canaud O+ VID M355 FR GPS++ 00:30:02 00:32:05.98 00:32:20.30 00:34:00 0.08 0.08 14.32 138.9
28 show Olivier Dechambre O+ CCD M279 FR GPS 00:22:56 00:32:11.23 00:32:17.73 00:40:51 0.02 0.02 6.50 63.0
29 show Eric Vauthrin O+ VID M254 FR GPS++ 00:21:59 00:32:09.20 00:32:25.25 00:41:59 0.08 0.04 16.05 155.7
30 show Philippe Morel O+ CCD M355 FR NTP 00:12:30 00:32:35.14 00:32:48.42 00:50:44 0.35 0.35 13.28 128.8
31 show Roland Boninsegna O+ VID M406 BE GPS++ 00:29:22 00:32:16.34 00:32:16.76 00:35:02 0.06 0.04 0.42 4.1
32 show Frederic Vachier O+ VID M200 FR GPS++ 00:22:06 00:32:15.86 00:32:23.34 00:42:06 0.01 0.01 7.48 72.6
33 show Malcolm Jennings O+ VID M276 UK RAD++ 00:27:00 00:32:26.18 00:32:42.46 00:37:00 0.2 0.2 16.28 157.9
34 show Peter Tickner O+ CCD M300 UK GPS 00:28:36 00:32:28.03 00:32:44.69 00:36:40 0.05 0.05 16.66 161.6
35 show Peter Birtwhistle O+ CCD M405 UK NTP 00:32:13 00:32:29.16 00:32:46.20 00:32:53 0.07 0.07 17.04 165.3
36 show Tim Haymes O+ VID M300 UK GPS++ 00:29:05 00:32:28.59 00:32:45.07 00:37:00 0.02 0.02 16.48 159.9
37 show Adrian Jones O+ VID M190 UK GPS++ 00:30:00 00:32:28.19 00:32:44.71 00:35:00 0.40 0.20 16.52 160.2
38 show Philip Denyer O+ VID M235 UK GPS++ 00:28:00 00:32:27.89 00:32:43.89 00:37:01 0.08 0.08 16.00 155.2
39 show John Talbot O+ VID M303 UK GPS++ 00:30:05 00:32:30.04 00:32:46.76 00:35:03 0.04 0.04 16.72 162.2
40 show Simon Kidd O+ CCD M350 UK GPS 00:31:45 00:32:31.44 00:32:46.32 00:34:04 0.01 0.01 14.88 144.3
41 show Mike Collins O+ VIS M254 UK RAD 00:31:00 00:32:34.6 00:32:49.0 00:33:00 0.07 0.07 14.40 139.7
42 show Claudio Arena O- CCD M200 IT 00:29:41 00:31:14
43 show Matthieu Conjat O- CCD M200 FR 00:30:31 00:35:32
44 show Robert Greimel O- VID M500 AT 00:26:02 00:36:05
45 show Michal Rottenborn O- VID M303 CZ 00:29:40 00:33:40
46 show Jiri Kubanek O- VID M203 CZ 00:27:27 00:36:02
47 show Karel Halir O- VID M507 CZ 00:28:00 00:35:00
48 show Rene Bourtembourg O- VIS M254 BE 00:30:00 00:34:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

48 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#137 : ae3ba71d-2f93-41d7-abaa-97798439a462 [db: observed]
JPL#137 : 4b9846d9-3bbe-4e2e-a366-866db354be98 [db: observed]

Using prediction ae3ba71d-2f93-41d7-abaa-97798439a462 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 = 576 x 123 km
a',b' = 287.9, 61.4 km
X0,Y0 = 164.1, -38.1 km
Mean diameter = 266 km

From 41 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: 2018-04-21, 00:30 UT (JD = 2458229.521)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 160None5.225 64°, -88° 2.4449147568e613314.80.0° size from AO is 185+/-20 km2013-07-23 191.0 +/- 14.0 km 2011-03-28
# 18564.05.225 64°, -90° 2.4449147568e613314.80.0° None2017-09-21 199.0 +/- 7.0 km 2017-09-20
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] : ae3ba71d-2f93-41d7-abaa-97798439a462 [observed]

 Occultation Date + Time   : 2018-04-21 at 00:23:20 UT +/- 0.03 min  [1]
 Object Designation        : (130) Elektra
 Orbit Class               : MBA
 Star Designation          : GDR3 4390305609945674752
 Star Coordinates (ICRF)   : RA = 17 17 50.3036, DE = +05 20 25.006  [2]
 Star Magnitudes           : G = 11.28 mag, RP = 10.54 mag, BP = 11.87 mag
 Object Magnitude          : V = 13.27 mag
 Estimated Magnitude Drop  : 2.2 mag
 Estimated Max. Duration   : 18.8 sec
 Object Mean Diameter      : 182 km  (src: astorb)
 Speed of the shadow       : 9.7 km/s
 Elongation to Moon & Sun  : 149° (sunlit = 29%), Sun = 127°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.63 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

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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Aladin Sky Atlas
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