Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    1.440962E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-07-22T06:22:35+0800
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    1 Object 1

    AOE ID 11
    NORAD ID 11
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 12404
    NORAD ID 12404
    Object Type DEBRIS
    Country
    CIS CIS

    Conjunction Constraints

    Parameter VANGUARD 2 SL-8 DEB
    Time of Closest Approach 2026-07-22T08:05:32+0800
    Collision Probability (Pc) 1.440962E-5
    Miss Distance (km) 0.521 km
    Position X (km) -6488.472 -6488.148
    Position Y (km) 930.553 930.937
    Position Z (km) -2635.196 -2635.335
    Velocity X (km/s) 0.719 -2.889
    Velocity Y (km/s) -7.382 -0.595
    Velocity Z (km/s) -2.94 6.909

    Orbital Parameters 国际轨道数据源

    Parameter VANGUARD 2 SL-8 DEB
    Semimajor Axis (a) 8101.406 km 7062.973 km
    Eccentricity (e) 0.144592 0.000603
    Inclination (i) 32.8786° 82.9067°
    RAAN 314.8450° 175.4066°
    Perigee Argument 252.8477° 313.1941°
    Mean Anomaly (M) 90.9144° 46.8759°
    Apogee 2894.671 km 689.099 km
    Perigee 551.867 km 680.573 km
    Orbit Epoch 2026-07-21T22:39:20+0800 2026-07-21T12:29:24+0800

    VANGUARD 2 & SL-8 DEB Collision Probability (Pc) Trend

    VANGUARD 2 & SL-8 DEB Collision Probability (Pc) TrendNot Available

    VANGUARD 2 & SL-8 DEB Miss Distance (Md) Trend

    VANGUARD 2 & SL-8 DEB Miss Distance (Md) TrendNot Available

    VANGUARD 2Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    SL-8 DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    VANGUARD 2Collision Probability Trend

    Object 1 Probability TrendNot Available

    SL-8 DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with VANGUARD 2

    No nearby objects data