Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.564173E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T23:16:50+0800
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    1 Object 1

    AOE ID 6844
    NORAD ID 6844
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 56455
    NORAD ID 56455
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 397 DEB STARLINK-5987
    Time of Closest Approach 2026-09-16T13:10:55+0000
    Collision Probability (Pc) 2.564173E-5
    Conjunction Distance (km) 0.814 km
    Relative Speed (km/s) 5.052 km/s
    Conjunction Risk Parameters R (Radial): -0.773 | I (In-track): -0.225 | C (Cross-track): -0.116
    Collision Risk Index (CRI) 0.63
    X Position (km) 626.489 626.667
    Position Y (km) 2778.81 2778.536
    Position Z (km) 6334.899 6334.154
    Velocity X (km/s) -7.391 -7.002
    Velocity Y (km/s) 2.369 -2.325
    Velocity Z (km/s) -0.115 1.709

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 397 DEB STARLINK-5987
    Semimajor Axis (a) 7320.756 km 6950.183 km
    Eccentricity (e) 0.055065 0.000284
    Inclination (i) 65.8985° 70.0010°
    RAAN 347.7206° 30.4727°
    Perigee Argument 67.8354° 267.4173°
    Mean Anomaly (M) 298.0194° 92.6661°
    Apogee 1345.735 km 574.020 km
    Perigee 539.503 km 570.072 km
    Orbit Epoch 2026-09-14T05:21:47+0000 2026-09-13T15:56:51+0000

    COSMOS 397 DEB & STARLINK-5987 Collision Probability (Pc) Trend

    COSMOS 397 DEB & STARLINK-5987 Collision Probability (Pc) TrendNot Available

    COSMOS 397 DEB & STARLINK-5987 Miss Distance (Miss Distance) Trend

    COSMOS 397 DEB & STARLINK-5987 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 397 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5987Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 397 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5987Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 397 DEB

    No nearby objects data