Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.47304E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T23:28:33+0800
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    1 Object 1

    AOE ID 28978
    NORAD ID 28978
    Object Type DEBRIS
    Country
    US US
    VS

    2 Object 2

    AOE ID 63164
    NORAD ID 63164
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter NIMBUS 2 DEB QIANFAN-78
    Time of Closest Approach 2026-09-12T14:14:42+0000
    Collision Probability (Pc) 1.47304E-6
    Conjunction Distance (km) 2.497 km
    Relative Speed (km/s) 10.96 km/s
    Conjunction Risk Parameters R (Radial): -2.463 | I (In-track): -0.268 | C (Cross-track): 0.306
    Collision Risk Index (CRI) 0.38
    X Position (km) -367.296 -367.232
    Position Y (km) 1287.68 1288.465
    Position Z (km) 7305.316 7307.685
    Velocity X (km/s) 7.083 -2.672
    Velocity Y (km/s) 1.874 6.697
    Velocity Z (km/s) -0.003 -1.305

    Orbital Parameters 国际轨道数据源

    Parameter NIMBUS 2 DEB QIANFAN-78
    Semimajor Axis (a) 7440.222 km 7446.677 km
    Eccentricity (e) 0.003929 0.001693
    Inclination (i) 100.3789° 88.9660°
    RAAN 191.4351° 291.8032°
    Perigee Argument 176.6385° 68.8676°
    Mean Anomaly (M) 335.8525° 291.4283°
    Apogee 1091.319 km 1081.151 km
    Perigee 1032.851 km 1055.929 km
    Orbit Epoch 2026-09-09T08:27:04+0000 2026-09-10T06:38:57+0000

    NIMBUS 2 DEB & QIANFAN-78 Collision Probability (Pc) Trend

    NIMBUS 2 DEB & QIANFAN-78 Collision Probability (Pc) TrendNot Available

    NIMBUS 2 DEB & QIANFAN-78 Miss Distance (Miss Distance) Trend

    NIMBUS 2 DEB & QIANFAN-78 Miss Distance (Miss Distance) TrendNot Available

    NIMBUS 2 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-78Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NIMBUS 2 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-78Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NIMBUS 2 DEB

    No nearby objects data