Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.128032E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:57:32+0800
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    1 Object 1

    AOE ID 21281
    NORAD ID 21281
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 64957
    NORAD ID 64957
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter DELTA 1 DEB HULIANWANG DIGUI-36
    Time of Closest Approach 2026-09-17T20:29:16+0000
    Collision Probability (Pc) 1.128032E-6
    Conjunction Distance (km) 2.564 km
    Relative Speed (km/s) 7.476 km/s
    Conjunction Risk Parameters R (Radial): 0.031 | I (In-track): 2.2 | C (Cross-track): -1.315
    Collision Risk Index (CRI) 0.36
    X Position (km) -983.705 -985.623
    Position Y (km) -1495.197 -1496.805
    Position Z (km) -7339.991 -7339.437
    Velocity X (km/s) -7.058 -2.18
    Velocity Y (km/s) -1.071 -6.716
    Velocity Z (km/s) 1.183 1.663

    Orbital Parameters 国际轨道数据源

    Parameter DELTA 1 DEB HULIANWANG DIGUI-36
    Semimajor Axis (a) 7508.564 km 7546.086 km
    Eccentricity (e) 0.005778 0.000222
    Inclination (i) 100.0008° 86.4914°
    RAAN 188.0875° 251.9473°
    Perigee Argument 79.6772° 89.5078°
    Mean Anomaly (M) 93.4294° 270.6311°
    Apogee 1173.814 km 1169.626 km
    Perigee 1087.040 km 1166.272 km
    Orbit Epoch 2026-09-15T13:58:08+0000 2026-09-15T14:28:47+0000

    DELTA 1 DEB & HULIANWANG DIGUI-36 Collision Probability (Pc) Trend

    DELTA 1 DEB & HULIANWANG DIGUI-36 Collision Probability (Pc) TrendNot Available

    DELTA 1 DEB & HULIANWANG DIGUI-36 Miss Distance (Miss Distance) Trend

    DELTA 1 DEB & HULIANWANG DIGUI-36 Miss Distance (Miss Distance) TrendNot Available

    DELTA 1 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HULIANWANG DIGUI-36Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    DELTA 1 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    HULIANWANG DIGUI-36Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with DELTA 1 DEB

    No nearby objects data