Collaborative Occultation Resources and Archive (CORA)


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

2019-03-07 / 4UC 540-051207 / (349) Dembowska

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Gerard Vaudescal O+ VID M305 FR GPS++ 19:37:38 19:38:35.05 19:38:39.32 19:39:38 0.06 0.10 4.27 58.1
2 show Denis Marchais O+ CCD M203 FR NTP 19:37:41 19:38:29.91 19:38:34.00 19:39:37 0.20 0.50 4.09 55.6
3 show Matthieu Conjat O+ CCD M400 FR NTP 19:36:26 19:38:08.91 19:38:14.98 19:39:41 1 1 6.07 82.6
4 show Pietro Baruffetti O+ VID M300 IT GPS++ 19:36:51 19:37:57.47 19:38:02.65 19:39:16 0.08 0.08 5.18 70.4
5 show Michel Boutet O- VID M300 FR 19:31:00 19:43:34
6 show J.J. Castellani O- VID M400 FR 19:37:37 19:39:46
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

6 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#134 : a40f1024-908e-40d8-9d67-70e766625509 [db: observed]

Using prediction a40f1024-908e-40d8-9d67-70e766625509 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 = 102 km

From 4 chords (VID,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: 2019-03-07, 19:37 UT (JD = 2458550.317)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 204None4.701 322°, 18° 2.438005e620545.30.0° None2013-07-24 162.0 +/- 17.0 km 2008-02-21
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] : a40f1024-908e-40d8-9d67-70e766625509 [observed]

 Occultation Date + Time   : 2019-03-07 at 19:32:39 UT +/- 0.02 min  [1]
 Object Designation        : (349) Dembowska
 Orbit Class               : MBA
 Star Designation          : GDR3 3983174905357125888
 Star Coordinates (ICRF)   : RA = 10 48 37.7169, DE = +17 53 15.275  [2]
 Star Magnitudes           : G = 11.58 mag, RP = 10.87 mag, BP = 12.13 mag
 Object Magnitude          : V = 10.46 mag
 Estimated Magnitude Drop  : 0.3 mag
 Estimated Max. Duration   : 10.3 sec
 Object Mean Diameter      : 140 km  (src: astorb)
 Speed of the shadow       : 13.6 km/s
 Elongation to Moon & Sun  : 157° (sunlit = 1%), Sun = 166°
 Cross-track uncertainty   : 5.3 mas = 8 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#134

 
 [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)