Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.628986E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:07:33+0800
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    1 Object 1

    AOE ID 21446
    NORAD ID 21446
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 63687
    NORAD ID 63687
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter DELTA 1 DEB HULIANWANG DIGUI-20
    Time of Closest Approach 2026-09-17T11:30:26+0000
    Collision Probability (Pc) 1.628986E-6
    Conjunction Distance (km) 2.562 km
    Relative Speed (km/s) 14.025 km/s
    Conjunction Risk Parameters R (Radial): -0.046 | I (In-track): 0.709 | C (Cross-track): -2.461
    Collision Risk Index (CRI) 0.39
    X Position (km) -92.761 -95.004
    Position Y (km) -1712.493 -1713.68
    Position Z (km) -7357.582 -7357.23
    Velocity X (km/s) -5.19 1.571
    Velocity Y (km/s) 5.039 -6.902
    Velocity Z (km/s) -1.307 1.588

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 1 DEB HULIANWANG DIGUI-20
    Semimajor Axis (a) 7752.778 km 7546.041 km
    Eccentricity (e) 0.037341 0.000194
    Inclination (i) 99.6963° 86.4989°
    RAAN 132.3246° 282.6720°
    Perigee Argument 219.1787° 81.3589°
    Mean Anomaly (M) 320.0625° 278.7765°
    Apogee 1664.140 km 1169.367 km
    Perigee 1085.142 km 1166.441 km
    Orbit Epoch 2026-09-15T10:00:23+0000 2026-09-15T14:34:07+0000

    DELTA 1 DEB & HULIANWANG DIGUI-20 Collision Probability (Pc) Trend

    DELTA 1 DEB & HULIANWANG DIGUI-20 Collision Probability (Pc) TrendNot Available

    DELTA 1 DEB & HULIANWANG DIGUI-20 Miss Distance (Miss Distance) Trend

    DELTA 1 DEB & HULIANWANG DIGUI-20 Miss Distance (Miss Distance) TrendNot Available

    DELTA 1 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HULIANWANG DIGUI-20Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 1 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    HULIANWANG DIGUI-20Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 1 DEB

    No nearby objects data