2025-09-20 / UCAC4 374-177432 / (14612) Irtish
| # | OBS | Observer | Occ | Meth. | Instr. | CC |
TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|
| 1 |
show |
Peter Nosal |
O+ |
VID |
M250 |
SK |
NTP |
18:14:16 |
18:15:19.640 |
18:15:21.390 |
18:16:25 |
0.050 |
0.050 |
1.75 |
15.9 |
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):
| Map with groundtrack and observer stations |
|---|
| Event Details |
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Occultation UUID [and DB] : 79163ea0-ddb7-11f0-547e-5d58fb6b5b51 [observed]
Occultation Date + Time : 2025-09-20 at 18:16:09 UT +/- 0.0 min [1]
Object Designation : (14612) Irtish
Orbit Class : MBA
Star Designation : GDR3 6839169999321344896
Star Coordinates (ICRF) : RA = 21 56 05.0353, DE = -15 14 10.604 [2]
Star Magnitudes : G = 13.63 mag, RP = 13.15 mag, BP = 13.93 mag
Object Magnitude : V = 17.96 mag
Estimated Magnitude Drop : 4.4 mag
Estimated Max. Duration : 1.0 sec
Object Mean Diameter : 9.1 km (src: astorb)
Speed of the shadow : 9.1 km/s
Elongation to Moon & Sun : 160° (sunlit = 1%), Sun = 148°
Cross-track uncertainty : 0.3 mas = 0 km = 0.06 path-width (1-sig)
RUWE and duplicate source : 1.05 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#66
Note : FP:true
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
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