Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.242055E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T06:57:36+0800
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    1 Object 1

    AOE ID 35771
    NORAD ID 35771
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 42806
    NORAD ID 42806
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB IRIDIUM 115
    Time of Closest Approach 2026-09-17T04:53:38+0000
    Collision Probability (Pc) 1.242055E-6
    Conjunction Distance (km) 2.869 km
    Relative Speed (km/s) 11.774 km/s
    Conjunction Risk Parameters R (Radial): 0.731 | I (In-track): 1.734 | C (Cross-track): -2.165
    Collision Risk Index (CRI) 0.37
    X Position (km) 908.705 906.87
    Position Y (km) -1948.639 -1950.565
    Position Z (km) 6785.515 6784.44
    Velocity X (km/s) 7.476 -1.551
    Velocity Y (km/s) 0.068 6.979
    Velocity Z (km/s) -0.851 2.209

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB IRIDIUM 115
    Semimajor Axis (a) 7209.187 km 7125.814 km
    Eccentricity (e) 0.020012 0.000235
    Inclination (i) 74.1558° 86.4448°
    RAAN 183.9476° 284.3872°
    Perigee Argument 48.3043° 86.7831°
    Mean Anomaly (M) 313.5030° 273.3638°
    Apogee 975.320 km 749.349 km
    Perigee 686.780 km 746.005 km
    Orbit Epoch 2026-09-14T05:21:16+0000 2026-09-15T09:17:45+0000

    COSMOS 2251 DEB & IRIDIUM 115 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & IRIDIUM 115 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & IRIDIUM 115 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & IRIDIUM 115 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 115Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 115Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data