Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.840969E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T15:42:59+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 61569
    NORAD ID 61569
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter NIMBUS 2 DEB QIANFAN-36
    Time of Closest Approach 2026-09-12T07:12:07+0000
    Collision Probability (Pc) 2.840969E-6
    Conjunction Distance (km) 1.972 km
    Relative Speed (km/s) 13.822 km/s
    Conjunction Risk Parameters R (Radial): -0.639 | I (In-track): -0.628 | C (Cross-track): -1.755
    Collision Risk Index (CRI) 0.44
    X Position (km) 1091.779 1092.896
    Position Y (km) 1637.452 1636.046
    Position Z (km) 7156.301 7157.115
    Velocity X (km/s) 7.02 -4.325
    Velocity Y (km/s) 1.544 -5.587
    Velocity Z (km/s) -1.449 1.938

    Orbital Parameters 国际轨道数据源

    Parameter NIMBUS 2 DEB QIANFAN-36
    Semimajor Axis (a) 7440.222 km 7429.694 km
    Eccentricity (e) 0.003929 0.000559
    Inclination (i) 100.3789° 88.9784°
    RAAN 191.4351° 52.6826°
    Perigee Argument 176.6385° 349.6495°
    Mean Anomaly (M) 335.8525° 10.4542°
    Apogee 1091.319 km 1055.714 km
    Perigee 1032.851 km 1047.400 km
    Orbit Epoch 2026-09-09T08:27:04+0000 2026-09-10T21:10:41+0000

    NIMBUS 2 DEB & QIANFAN-36 Collision Probability (Pc) Trend

    NIMBUS 2 DEB & QIANFAN-36 Collision Probability (Pc) TrendNot Available

    NIMBUS 2 DEB & QIANFAN-36 Miss Distance (Miss Distance) Trend

    NIMBUS 2 DEB & QIANFAN-36 Miss Distance (Miss Distance) TrendNot Available

    NIMBUS 2 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    QIANFAN-36Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NIMBUS 2 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    QIANFAN-36Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NIMBUS 2 DEB

    No nearby objects data