Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.766108E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T16:48:00+0800
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    1 Object 1

    AOE ID 10221
    NORAD ID 10221
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 59498
    NORAD ID 59498
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter DELTA 1 DEB STARLINK-31731
    Time of Closest Approach 2026-09-11T08:13:03+0000
    Collision Probability (Pc) 9.766108E-7
    Conjunction Distance (km) 2.713 km
    Relative Speed (km/s) 6.739 km/s
    Conjunction Risk Parameters R (Radial): 2.234 | I (In-track): 1.408 | C (Cross-track): -0.623
    Collision Risk Index (CRI) 0.35
    X Position (km) 5910.426 5907.891
    Position Y (km) -1991.992 -1992.724
    Position Z (km) -2869.062 -2868.432
    Velocity X (km/s) 1.641 3.749
    Velocity Y (km/s) 7.28 5.21
    Velocity Z (km/s) -1.947 4.109

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 1 DEB STARLINK-31731
    Semimajor Axis (a) 7035.476 km 6861.180 km
    Eccentricity (e) 0.028349 0.000069
    Inclination (i) 29.0250° 43.0008°
    RAAN 117.8060° 19.4020°
    Perigee Argument 187.5565° 290.7211°
    Mean Anomaly (M) 172.0691° 69.3566°
    Apogee 856.790 km 483.520 km
    Perigee 457.888 km 482.566 km
    Orbit Epoch 2026-09-09T07:55:15+0000 2026-09-09T20:17:22+0000

    DELTA 1 DEB & STARLINK-31731 Collision Probability (Pc) Trend

    DELTA 1 DEB & STARLINK-31731 Collision Probability (Pc) TrendNot Available

    DELTA 1 DEB & STARLINK-31731 Miss Distance (Miss Distance) Trend

    DELTA 1 DEB & STARLINK-31731 Miss Distance (Miss Distance) TrendNot Available

    DELTA 1 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31731Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 1 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31731Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 1 DEB

    No nearby objects data