Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    5.838184E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T05:27:19+0800
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    1 Object 1

    AOE ID 16799
    NORAD ID 16799
    Object Type ROCKET BODY
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 17525
    NORAD ID 17525
    Object Type PAYLOAD
    Country
    CIS CIS

    Conjunction Constraints

    Parameter SL-8 R/B COSMOS 1821
    Time of Closest Approach 2026-09-18T08:19:19+0000
    Collision Probability (Pc) 5.838184E-7
    Conjunction Distance (km) 2.815 km
    Relative Speed (km/s) 2.781 km/s
    Conjunction Risk Parameters R (Radial): 1.549 | I (In-track): 2.316 | C (Cross-track): 0.402
    Collision Risk Index (CRI) 0.3
    X Position (km) -921.016 -921.34
    Position Y (km) 34.191 31.852
    Position Z (km) 7274.648 7276.18
    Velocity X (km/s) -1.645 1.102
    Velocity Y (km/s) -7.187 -7.296
    Velocity Z (km/s) -0.222 0.189

    Orbital Parameters 国际轨道数据源

    Parameter SL-8 R/B COSMOS 1821
    Semimajor Axis (a) 7350.501 km 7363.536 km
    Eccentricity (e) 0.006640 0.003794
    Inclination (i) 82.9147° 82.9089°
    RAAN 79.0187° 101.1971°
    Perigee Argument 177.6157° 58.6170°
    Mean Anomaly (M) 182.5330° 104.4412°
    Apogee 1021.170 km 1013.337 km
    Perigee 923.558 km 957.461 km
    Orbit Epoch 2026-09-15T11:53:41+0000 2026-09-15T02:02:07+0000

    SL-8 R/B & COSMOS 1821 Collision Probability (Pc) Trend

    SL-8 R/B & COSMOS 1821 Collision Probability (Pc) TrendNot Available

    SL-8 R/B & COSMOS 1821 Miss Distance (Miss Distance) Trend

    SL-8 R/B & COSMOS 1821 Miss Distance (Miss Distance) TrendNot Available

    SL-8 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    COSMOS 1821Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-8 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    COSMOS 1821Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-8 R/B

    No nearby objects data