Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.324309E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T17:54:18+0800
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    1 Object 1

    Name USA 18
    AOE ID 16631
    NORAD ID 16631
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 68370
    NORAD ID 68370
    Object Type PAYLOAD
    Country
    CIS CIS

    Conjunction Constraints

    Parameter USA 18 RASSVET-3 11
    Time of Closest Approach 2026-09-06T04:08:07+0000
    Collision Probability (Pc) 1.324309E-6
    Conjunction Distance (km) 2.874 km
    Relative Speed (km/s) 13.212 km/s
    Conjunction Risk Parameters R (Radial): -2.266 | I (In-track): -0.922 | C (Cross-track): -1.505
    Collision Risk Index (CRI) 0.37
    X Position (km) 1585.672 1583.825
    Position Y (km) -3541.88 -3541.817
    Position Z (km) 5516.549 5514.35
    Velocity X (km/s) 7.345 -0.861
    Velocity Y (km/s) -1.168 6.318
    Velocity Z (km/s) -2.861 4.292

    Orbital Parameters 国际轨道数据源

    Parameter USA 18 RASSVET-3 11
    Semimajor Axis (a) 7294.878 km 6744.271 km
    Eccentricity (e) 0.074536 0.000644
    Inclination (i) 63.2942° 82.2882°
    RAAN 162.7112° 284.8215°
    Perigee Argument 114.1032° 205.7853°
    Mean Anomaly (M) 253.9795° 154.3087°
    Apogee 1460.471 km 370.476 km
    Perigee 373.011 km 361.792 km
    Orbit Epoch 2026-09-05T03:31:00+0000 2026-09-04T12:03:50+0000

    USA 18 & RASSVET-3 11 Collision Probability (Pc) Trend

    USA 18 & RASSVET-3 11 Collision Probability (Pc) TrendNot Available

    USA 18 & RASSVET-3 11 Miss Distance (Miss Distance) Trend

    USA 18 & RASSVET-3 11 Miss Distance (Miss Distance) TrendNot Available

    USA 18Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    RASSVET-3 11Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    USA 18Collision Probability Trend

    Object 1 Probability TrendNot Available

    RASSVET-3 11Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 18

    No nearby objects data