Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    9.198826E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T12:52:10+0800
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    1 Object 1

    AOE ID 21723
    NORAD ID 21723
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 48657
    NORAD ID 48657
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 397 DEB STARLINK-2734
    Time of Closest Approach 2026-09-04T15:51:27+0000
    Collision Probability (Pc) 9.198826E-6
    Conjunction Distance (km) 1.326 km
    Relative Speed (km/s) 12.79 km/s
    Conjunction Risk Parameters R (Radial): -0.668 | I (In-track): -0.632 | C (Cross-track): 0.953
    Collision Risk Index (CRI) 0.54
    X Position (km) -6048.085 -6047.214
    Position Y (km) 1849.996 1850.916
    Position Z (km) 2621.805 2621.419
    Velocity X (km/s) 1.5 -3.584
    Velocity Y (km/s) -4.049 -4.083
    Velocity Z (km/s) 6.373 -5.363

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 397 DEB STARLINK-2734
    Semimajor Axis (a) 6967.367 km 6848.890 km
    Eccentricity (e) 0.017577 0.000115
    Inclination (i) 65.6619° 53.1623°
    RAAN 156.6325° 5.4670°
    Perigee Argument 12.7611° 101.2975°
    Mean Anomaly (M) 347.7871° 258.8156°
    Apogee 711.695 km 471.541 km
    Perigee 466.765 km 469.965 km
    Orbit Epoch 2026-09-03T04:22:40+0000 2026-09-03T17:16:32+0000

    COSMOS 397 DEB & STARLINK-2734 Collision Probability (Pc) Trend

    COSMOS 397 DEB & STARLINK-2734 Collision Probability (Pc) TrendNot Available

    COSMOS 397 DEB & STARLINK-2734 Miss Distance (Miss Distance) Trend

    COSMOS 397 DEB & STARLINK-2734 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 397 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-2734Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 397 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-2734Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 397 DEB

    No nearby objects data