Collaborative Occultation Resources and Archive (CORA)

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

2024-06-10 / UCAC4 457-072066 / (439) Ohio

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Peter Nosal O+ VID M250 SK NTP 22:17:36 22:18:30.300 22:18:36.0 22:20:03 0.2 0.2 5.70 78.7
2 show Jiri Kubanek O+ VID M303 CZ GPS 22:17:32 22:18:55.3 22:19:01.1 22:20:31 0.2 0.2 5.80 80.0
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#106 : fff91940-11e6-11ef-67cb-9366ff76d508 [db: asteroids]

Using prediction fff91940-11e6-11ef-67cb-9366ff76d508 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:
X0,Y0 = -1191.8, 12.3 km
Circular diameter = 82 km

From 2 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.

Sky projection (artificial light) for occ. time: 2024-06-10, 22:18 UT (JD = 2460472.429)

DAMITQP (h)λ, βJD0JD-JD0φ0VersionModifiedVol-equiv DCmnt
# 22531.537.467 39°, -54° 2.451054e69418.40.0° None2018-07-19 not scaled 2018-07-18
# 22541.537.468 260°, -30° 2.451054e69418.40.0° None2018-07-19 not scaled 2018-07-18
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] : fff91940-11e6-11ef-67cb-9366ff76d508 [asteroids]

 Occultation Date + Time   : 2024-06-10 at 22:15:30 UT +/- 0.0 min  [1]
 Object Designation        : (439) Ohio
 Orbit Class               : MBA
 Star Designation          : GDR3 4467811451601891840
 Star Coordinates (ICRF)   : RA = 18 01 50.3944, DE = +01 21 00.553  [2]
 Star Magnitudes           : G = 14.31 mag, RP = 13.49 mag, BP = 15.03 mag
 Object Magnitude          : V = 14.95 mag
 Estimated Magnitude Drop  : 1.1 mag
 Estimated Max. Duration   : 5.5 sec
 Object Mean Diameter      : 77 km  (src: astorb)
 Speed of the shadow       : 13.8 km/s
 Elongation to Moon & Sun  : 129° (sunlit = 20%), Sun = 153°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#106

 
 [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)