2025-09-18 / TYC 1806-01531-1 / (30814) 1990 QW
| # | OBS | Observer | Occ | Meth. | Instr. | CC |
TSRC | UT1 | UT2 | UT3 | UT4 | UT2E | UT3E | Dur. | Chrd |
|---|
| 1 |
show |
Tomas Janik |
O+ |
CCD |
T600 |
CZ |
GPS |
22:57:20 |
22:57:58.71 |
22:57:59.33 |
22:58:45 |
0.020 |
0.020 |
0.62 |
3.5 |
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] : 7ba09300-ddb7-11f0-547e-ebf6d45f1a48 [observed]
Occultation Date + Time : 2025-09-18 at 22:53:49 UT +/- 0.01 min [1]
Object Designation : (30814) 1990 QW
Orbit Class : MBA
Star Designation : GDR3 0069805175749940352
Star Coordinates (ICRF) : RA = 03 33 30.7129, DE = +27 12 42.130 [2]
Star Magnitudes : G = 11.91 mag, RP = 11.34 mag, BP = 12.3 mag
Object Magnitude : V = 18.19 mag
Estimated Magnitude Drop : 6.3 mag
Estimated Max. Duration : 0.7 sec
Object Mean Diameter : 4.0 km (src: astorb)
Speed of the shadow : 5.6 km/s
Elongation to Moon & Sun : 85° (sunlit = 8%), Sun = 118°
Cross-track uncertainty : 0.4 mas = 0 km = 0.10 path-width (1-sig)
RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#53
Note : FP:true
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
|
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