Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.55108E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T08:37:22+0800
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    1 Object 1

    AOE ID 33765
    NORAD ID 33765
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 53664
    NORAD ID 53664
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB STARLINK-4471
    Time of Closest Approach 2026-09-18T10:02:18+0000
    Collision Probability (Pc) 1.55108E-6
    Conjunction Distance (km) 2.714 km
    Relative Speed (km/s) 15.105 km/s
    Conjunction Risk Parameters R (Radial): 2.613 | I (In-track): -0.104 | C (Cross-track): 0.728
    Collision Risk Index (CRI) 0.39
    X Position (km) -3458.589 -3457.809
    Position Y (km) 2145.67 2144.377
    Position Z (km) -5514.986 -5512.732
    Velocity X (km/s) 2.767 -4.231
    Velocity Y (km/s) -5.881 4.539
    Velocity Z (km/s) -3.98 4.422

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB STARLINK-4471
    Semimajor Axis (a) 6852.747 km 6843.698 km
    Eccentricity (e) 0.004794 0.000173
    Inclination (i) 73.9987° 97.2838°
    RAAN 314.3218° 135.4594°
    Perigee Argument 329.4115° 90.8872°
    Mean Anomaly (M) 30.4293° 269.2570°
    Apogee 507.463 km 466.748 km
    Perigee 441.757 km 464.374 km
    Orbit Epoch 2026-09-14T04:36:07+0000 2026-09-15T14:55:51+0000

    COSMOS 2251 DEB & STARLINK-4471 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & STARLINK-4471 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & STARLINK-4471 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & STARLINK-4471 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4471Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4471Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data