Collaborative Occultation
Resources and Archive
CORA

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

2025-11-22 / UCAC4 578-013417 / (49100) 1998 RT74

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Stefan Meister O+ VID M500 CH GPS 23:35:38 23:36:00.136 23:36:00.268 23:36:23 0.016 0.016 0.13 1.2
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#52 : c1686290-ddb8-11f0-547e-a954d3c7690f [db: observed]

Using prediction c1686290-ddb8-11f0-547e-a954d3c7690f for map and profile fit

Get observations as KML file (reduced site location resolution)


Map with groundtrack and observer stations

Event Details
 Occultation UUID [and DB] : c1686290-ddb8-11f0-547e-a954d3c7690f [observed]

 Occultation Date + Time   : 2025-11-22 at 23:34:59 UT +/- 0.0 min  [1]
 Object Designation        : (49100) 1998 RT74
 Orbit Class               : MBA
 Star Designation          : GDR3 3420220347730968832
 Star Coordinates (ICRF)   : RA = 05 00 12.4739, DE = +25 29 19.277  [2]
 Star Magnitudes           : G = 13.88 mag, RP = 12.84 mag, BP = 14.99 mag
 Object Magnitude          : V = 18.2 mag
 Estimated Magnitude Drop  : 4.3 mag
 Estimated Max. Duration   : 0.4 sec
 Object Mean Diameter      : 3.3 km  (src: astorb)
 Speed of the shadow       : 9.4 km/s
 Elongation to Moon & Sun  : 166° (sunlit = 6%), Sun = 164°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 1.01 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#52
 Note                      : FP:true

 
 [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)