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2019-10-29 / TYC 1932-00469-1 / (87) Sylvia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show O. Canales et al O+ VID M200 ES GPS++ 23:36:01 23:38:00.41 23:38:21.07 23:40:00 0.04 0.04 20.66 256.2
2 show C. Perello/A. Selva O+ VID M500 ES GPS++ 23:36:23 23:37:15.95 23:37:16.87 23:43:27 0.02 0.02 0.92 11.4
3 show P. Andre et al O+ VID M300 FR GPS++ 23:38:11.70 23:38:32.82 0.08 0.08 21.12 261.9
4 show Patrick Sogorb O+ VID M305 FR GPS++ 23:37:27 23:37:30.56 23:37:30.80 23:39:27 0.08 0.08 0.24 3.0
5 show Jean-Marc Lechopier O+ CCD L120 FR NTP 23:38:00 23:38:15.88 23:38:36.65 23:38:46 0.05 0.05 20.77 257.5
6 show A. Wuensche et al O+ CCD M820 FR NTP 23:00:04 23:38:21.60 23:38:32.64 00:01:04 0.34 0.38 11.04 136.9
7 show Eric Frappa O+ VID L61 FR GPS++ 23:36:37 23:38:19.22 23:38:40.98 23:40:03 0.16 0.24 21.76 269.8
8 show Bernd Gaehrken O+ VID M150 DE RAD 23:35:52 23:38:50.34 23:39:11.33 23:41:09 20.99 260.3
9 show Jiri Polak O+ VID M303 CZ GPS++ 23:35:41 23:39:01.59 23:39:16.79 23:42:42 0.08 0.08 15.20 188.5
10 show Libor Smid O+ CCD M355 CZ RAD++ 23:36:31 23:39:01.87 23:39:16.80 23:39:49 0.10 0.10 14.93 185.1
11 show Jiri Kubanek O+ VID M203 CZ GPS++ 23:36:13 23:39:03.16 23:39:16.01 23:42:15 0.02 0.02 12.85 159.3
12 show Karel Halir O+ VID M507 CZ GPS++ 23:35:13 23:39:02.68 23:39:16.61 23:43:13 0.01 0.01 13.93 172.7
13 show Michal Rottenborn O+ VID M303 CZ GPS++ 23:35:12 23:39:04.09 23:39:17.30 23:43:12 0.02 0.02 13.21 163.8
14 show J. Ohlert et al O+ CCD M280 DE NTP 23:34:48 23:38:58.73 23:39:12.74 23:51:00 1 1 14.01 173.7
15 show Jaromir Jindra O+ VID M203 CZ GPS++ 23:36:18 23:39:08.89 23:39:15.39 23:42:15 0.05 0.05 6.50 80.6
16 show Friedhelm Huebner O+ CCD L80 DE 23:36:37 23:39:13.90 23:39:21.92 23:41:32 8.02 99.4
17 show Jan Zahajsky O+ CCD M355 CZ GPS++ 23:35:50 23:39:07.50 23:39:18.34 23:42:00 0.02 0.02 10.84 134.4
18 show Oliver Kloes O+ VID M254 DE GPS++ 23:36:00 23:39:02.10 23:39:14.06 23:42:00 0.02 0.02 11.96 148.3
19 show Jiri Lev O+ VID M500 CZ GPS++ 23:35:59 23:39:04.84 23:39:20.73 23:41:57 0.01 0.01 15.89 197.0
20 show Ladislav Cervinka O+ VID M200 CZ GPS++ 23:37:36 23:39:10.74 23:39:21.23 23:41:06 0.05 0.12 10.49 130.1
21 show Martin Gembec O+ CCD M160 CZ GPS 23:33:31 23:39:10.8 23:39:23.1 23:43:02 0.25 0.25 12.30 152.5
22 show Milan Antos O+ CCD M254 CZ NTP 23:36:45 23:39:11.34 23:39:25.12 23:40:45 0.07 0.07 13.78 170.9
23 show Thomas Berthold O+ VIS M360 DE RAD++ 23:36:58 23:39:07.6 23:39:29.0 23:39:58 21.40 265.4
24 show Michael Koch O+ CCD L142 DE RAD 23:34:00 23:39:15.48 23:39:24.48 23:42:00 1 1 9.00 111.6
25 show Anna Marciniak O+ CCD M400 PL NTP 23:31:21 23:39:23.4 23:39:39.9 23:49:39 1.0 1.0 16.50 204.6
26 show Krzysztof Kaminski O+ CCD M203 PL GPS++ 23:30:05 23:39:23.31 23:39:41.81 23:50:05 0.03 0.05 18.50 229.4
27 show Peter Enskonatus O+ VID M200 DE GPS++ 23:37:35 23:39:19.4 23:39:40.2 23:37:35 0.3 0.3 20.80 257.9
28 show Tomasz Kluwak O+ CCD M279 PL NTP 23:36:10 23:39:22.66 23:39:42.13 23:46:19 0.07 0.07 19.47 241.4
29 show Sirko Molau O+ CCD M500 DE NTP 23:37:41 23:39:19.69 23:39:39.99 23:45:00 0.16 0.10 20.30 251.7
30 show Christian Weber O+ VID M150 DE GPS++ 23:30:20 23:39:20.13 23:39:40.11 23:47:00 0.04 0.04 19.98 247.8
31 show Ralf Koehrbrueck O+ CCD L175 DE NTP 23:36:14 23:37:45.79 23:37:47.59 23:41:41 0.20 0.20 1.80 22.3
32 show Ralf Koehrbrueck O+ CCD L175 DE NTP 23:36:14 23:39:20.77 23:39:39.21 23:41:41 0.20 0.20 18.44 228.7
33 show Nikolai Wuensche O+ CCD M300 DE GPS++ 23:36:31 23:37:47.84 23:37:48.44 23:42:33 0.10 0.10 0.60 7.4
34 show Nikolai Wuensche O+ CCD M300 DE GPS++ 23:36:31 23:39:22.30 23:39:41.84 23:42:33 0.10 0.10 19.54 242.3
35 show Dieter Ewald O+ VIS L120 DE RAD 23:38:30 23:39:22.6 23:39:42.4 23:40:30 19.80 245.5
36 show A. Wrembel et al O+ VID M203 PL GPS++ 23:37:04 23:39:29.20 23:39:48.40 23:44:03 0.08 0.08 19.20 238.1
37 show Carles Schnabel O- VID M400 ES 23:37:17 23:42:24
38 show A. Malvache et al O- CCD V112 FR 23:35:18 23:40:11
39 show A. Martin/E. Arbouch O- CCD V112 FR 23:35:02 23:40:09
40 show Matthieu Conjat O- CCD M400 FR 23:36:31 23:39:53
41 show Marian Urbanik O- VID M252 SK 23:38:37 23:39:45
42 show Stanislav Holy O- CCD M200 CZ 23:38:26 23:39:56
43 show Jan Manek O- CCD M205 CZ 23:36:15 23:41:15
44 show F. Van Den Abbeel O- VID M200 BE 23:38:03 23:41:03
45 show O. Schreurs et al O- VID M406 BE 23:30:11 23:50:02
46 show Marek Zawilski O- CCD M203 PL 23:37:00 23:41:00
47 show Dariusz Miller O- VIS M270 PL 23:35:32 23:49:20
48 show Alex Pratt O- VID M279 UK 23:29:57 23:50:07
49 show Donatas Tamonis O- CCD M200 LT 23:35:01 23:44:59
50 show P. Andre et al O? VID M300 FR GPS++ 23:35:42.26 23:35:42.50 0.08 0.08 0.24 3.0
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

50 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#114 : dd8af650-75dd-4de0-9be5-683f37fda14c [db: observed]

Using prediction dd8af650-75dd-4de0-9be5-683f37fda14c 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 = 2718 x 206 km
a',b' = 1359.2, 103.0 km
X0,Y0 = 158.8, 174.0 km
Mean diameter = 748 km

From 37 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: 2019-10-29, 23:37 UT (JD = 2458786.484)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 148None5.184 71°, 66° 2.44538690762e613399.60.0° None2013-07-24 258.0 +/- 28.0 km 2007-02-27
# 7194.05.184 72°, 68° 2.44375e615036.50.0° None2017-06-19 277.0 +/- 5.0 km 2017-06-13
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] : dd8af650-75dd-4de0-9be5-683f37fda14c [observed]

 Occultation Date + Time   : 2019-10-29 at 23:43:17 UT +/- 0.02 min  [1]
 Object Designation        : (87) Sylvia
 Orbit Class               : MBA
 Star Designation          : GDR3 0679856115656562048
 Star Coordinates (ICRF)   : RA = 08 21 01.7465, DE = +25 57 43.126  [2]
 Star Magnitudes           : G = 9.9 mag, RP = 9.47 mag, BP = 10.17 mag
 Object Magnitude          : V = 13.34 mag
 Estimated Magnitude Drop  : 3.5 mag
 Estimated Max. Duration   : 21.0 sec
 Object Mean Diameter      : 261 km  (src: astorb)
 Speed of the shadow       : 12.4 km/s
 Elongation to Moon & Sun  : 119° (sunlit = 5%), Sun = 95°
 Cross-track uncertainty   : 1.0 mas = 2 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.91 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#114

 Object is a Gaia mass determination target !

 [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
(If error 404: link not valid which means no data available)

Aladin Sky Atlas
Aladin Lite direct link (has Gaia overlay)