Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.511765E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-30T23:25:07+0800
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    1 Object 1

    Name NPP
    AOE ID 37849
    NORAD ID 37849
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 55008
    NORAD ID 55008
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter NPP CZ-6A DEB
    Time of Closest Approach 2026-10-30T20:46:09+0000
    Collision Probability (Pc) 1.511765E-6
    Conjunction Distance (km) 2.214 km
    Relative Speed (km/s) 7.737 km/s
    Conjunction Risk Parameters R (Radial): -1.984 | I (In-track): 0.84 | C (Cross-track): -0.509
    Collision Risk Index (CRI) 0.39
    X Position (km) 1290.651 1290.39
    Position Y (km) 133.43 132.417
    Position Z (km) -7094.393 -7092.442
    Velocity X (km/s) -3.157 4.418
    Velocity Y (km/s) -6.684 -5.947
    Velocity Z (km/s) -0.699 0.695

    Orbital Parameters 国际轨道数据源

    Parameter NPP CZ-6A DEB
    Semimajor Axis (a) 7205.041 km 7231.996 km
    Eccentricity (e) 0.000106 0.004049
    Inclination (i) 98.8088° 98.8499°
    RAAN 242.9864° 306.5533°
    Perigee Argument 334.8881° 281.6975°
    Mean Anomaly (M) 25.2244° 77.9654°
    Apogee 827.665 km 883.140 km
    Perigee 826.143 km 824.578 km
    Orbit Epoch 2026-10-29T23:13:37+0000 2026-10-29T23:03:09+0000

    NPP & CZ-6A DEB Collision Probability (Pc) Trend

    NPP & CZ-6A DEB Collision Probability (Pc) TrendNot Available

    NPP & CZ-6A DEB Miss Distance (Miss Distance) Trend

    NPP & CZ-6A DEB Miss Distance (Miss Distance) TrendNot Available

    NPPMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-6A DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NPPCollision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-6A DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NPP

    No nearby objects data