Collaborative Occultation Resources and Archive (CORA)


Occultations | Observations | Reports | Info + Credits | JOA | Admin | Login

2014-04-18 / 2UC 38779497 / (241) Germania

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Gerhard Dangl O+ VID M254 AT GPS++ 20:57:55 21:00:00.32 21:00:08.64 21:00:09 0.33 0.33 8.32 179.7
2 show Karel Halir O+ VID M507 CZ GPS++ 20:57:30 20:59:55.21 21:00:02.57 21:02:00 0.08 0.08 7.36 159.0
3 show Harrie Rutten O+ VID M356 NL GPS++ 20:58:00 20:59:38.58 20:59:46.26 21:01:00 0.16 0.16 7.68 165.9
4 show Jan-Maarten Winkel O+ VID M310 NL GPS++ 20:59:00 20:59:36.34 20:59:44.87 21:01:00 0.33 0.33 8.53 184.2
5 show Alex Pratt O+ VID M200 UK GPS++ 20:58:00 20:59:17.33 20:59:24.37 21:00:06 0.16 0.16 7.04 152.1
6 show Tim Haymes O- VID M300 UK 20:47:00 21:02:00
7 show John Talbot O- VID M303 UK 20:57:33 21:01:38
8 show Henk Bulder O- VIS M305 NL 20:58:00 21:00:30
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

8 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#132 : 11d635d8-6f4f-446f-a658-b407b0c34b72 [db: observed]

Using prediction 11d635d8-6f4f-446f-a658-b407b0c34b72 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 = 184 x 146 km
a',b' = 92.2, 73.0 km
X0,Y0 = -487.4, 13.1 km
Mean diameter = 164 km

From 5 chords (VID)








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.

Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : 11d635d8-6f4f-446f-a658-b407b0c34b72 [observed]

 Occultation Date + Time   : 2014-04-18 at 20:57:22 UT +/- 0.01 min  [1]
 Object Designation        : (241) Germania
 Orbit Class               : MBA
 Star Designation          : GDR3 3366445222585978240
 Star Coordinates (ICRF)   : RA = 07 07 07.8484, DE = +19 35 03.358  [2]
 Star Magnitudes           : G = 12.5 mag, RP = 12.11 mag, BP = 12.74 mag
 Object Magnitude          : V = 13.91 mag
 Estimated Magnitude Drop  : 1.7 mag
 Estimated Max. Duration   : 7.8 sec
 Object Mean Diameter      : 169 km  (src: astorb)
 Speed of the shadow       : 21.6 km/s
 Elongation to Moon & Sun  : 148° (sunlit = 86%), Sun = 77°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 0.94 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#132

 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)