Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    3.180966E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T14:48:07+0800
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    1 Object 1

    AOE ID 37546
    NORAD ID 37546
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    Name R5-S9
    AOE ID 69901
    NORAD ID 69901
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB R5-S9
    Time of Closest Approach 2026-09-06T15:53:44+0000
    Collision Probability (Pc) 3.180966E-6
    Conjunction Distance (km) 1.896 km
    Relative Speed (km/s) 14.021 km/s
    Conjunction Risk Parameters R (Radial): 1.893 | I (In-track): -0.042 | C (Cross-track): 0.109
    Collision Risk Index (CRI) 0.45
    X Position (km) -2025.252 -2024.792
    Position Y (km) 155.761 155.649
    Position Z (km) -6677.324 -6675.488
    Velocity X (km/s) 1.773 -6.113
    Velocity Y (km/s) -7.305 3.979
    Velocity Z (km/s) -0.707 1.948

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB R5-S9
    Semimajor Axis (a) 6978.158 km 6972.472 km
    Eccentricity (e) 0.000826 0.000331
    Inclination (i) 74.0178° 97.7462°
    RAAN 288.7765° 146.9301°
    Perigee Argument 282.1834° 307.0297°
    Mean Anomaly (M) 77.8422° 53.0618°
    Apogee 605.785 km 596.645 km
    Perigee 594.257 km 592.025 km
    Orbit Epoch 2026-09-04T20:47:47+0000 2026-09-04T12:41:44+0000

    COSMOS 2251 DEB & R5-S9 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & R5-S9 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & R5-S9 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & R5-S9 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    R5-S9Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    R5-S9Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data