Collaborative Occultation Resources and Archive (CORA)

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

2021-07-10 / 4UC 371-132671 / (2207) Antenor

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Rui Goncalves O+ VID M254 PT GPS++ 00:53:24 00:54:41.28 00:54:48.00 00:55:46 0.16 0.16 6.72 107.5
2 show O. Canales et al O+ VID M500 ES GPS++ 00:53:00 00:54:07.64 00:54:14.08 00:55:00 0.08 0.20 6.44 103.0
3 show Matthieu Conjat O+ CCD M400 FR NTP 00:52:33 00:53:35.10 00:53:40.60 00:54:32 0.51 0.51 5.50 88.0
4 show L. Liberato et al O+ CCD M500 FR GPS 00:50:23 00:53:36.66 00:53:42.31 00:55:26 0.06 0.06 5.65 90.4
5 show Ramon Iglesias O- CCD M400 ES 00:39:37 01:00:03
6 show Carles Schnabel O- VID M280 ES 00:51:20 00:54:27
7 show C. Perello/A. Selva O- CCD M500 ES 00:51:55 00:55:54
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

7 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#60 : ec9115b2-3af7-4af2-8026-1622dea6adab [db: observed]

Using prediction ec9115b2-3af7-4af2-8026-1622dea6adab 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 = 110 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.

Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : ec9115b2-3af7-4af2-8026-1622dea6adab [observed]

 Occultation Date + Time   : 2021-07-10 at 00:56:52 UT +/- 0.03 min  [1]
 Object Designation        : (2207) Antenor
 Orbit Class               : JTRO
 Star Designation          : GDR3 4103087299953614720
 Star Coordinates (ICRF)   : RA = 18 31 04.3259, DE = -15 58 45.594  [2]
 Star Magnitudes           : G = 12.61 mag, RP = 11.11 mag, BP = 15.91 mag
 Object Magnitude          : V = 15.96 mag
 Estimated Magnitude Drop  : 3.4 mag
 Estimated Max. Duration   : 5.3 sec
 Object Mean Diameter      : 85 km  (src: astorb)
 Speed of the shadow       : 16.0 km/s
 Elongation to Moon & Sun  : 165° (sunlit = 0%), Sun = 167°
 Cross-track uncertainty   : 0.5 mas = 1 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.95 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#60

 
 [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)