Collaborative Occultation Resources and Archive (CORA)


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

2025-02-12 / UCAC4 558-042623 / (1112) Polonia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Wojciech Burzynski, Maciej Jarmoc, +1 O+ VID T600 PL GPS 21:04:08 21:05:16.06 21:05:19.35 21:06:19 0.05 0.05 3.29 30.9
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#76 : 2b6b1040-86c9-11ef-78cd-509fee734ddf [db: asteroids]

Using prediction 2b6b1040-86c9-11ef-78cd-509fee734ddf for map and profile fit

Get observations as KML file (reduced site location resolution)


Map with groundtrack and observer stations

Occ by (1112) Polonia on 2025-02-12

Unavailable
100 km

Event Details
 Occultation UUID [and DB] : 2b6b1040-86c9-11ef-78cd-509fee734ddf [asteroids]

 Occultation Date + Time   : 2025-02-12 at 21:06:57 UT +/- 0.01 min  [1]
 Object Designation        : (1112) Polonia
 Orbit Class               : MBA
 Star Designation          : GDR3 0865396984857488512
 Star Coordinates (ICRF)   : RA = 07 38 27.1973, DE = +21 31 33.323  [2]
 Star Magnitudes           : G = 14.1 mag, RP = 13.61 mag, BP = 14.43 mag
 Object Magnitude          : V = 14.76 mag
 Estimated Magnitude Drop  : 1.1 mag
 Estimated Max. Duration   : 3.8 sec
 Object Mean Diameter      : 35.8 km  (src: astorb)
 Speed of the shadow       : 9.4 km/s
 Elongation to Moon & Sun  : 35° (sunlit = 100%), Sun = 148°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76

 
 [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)