Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.760604E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-16T08:00:37+0800
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    1 Object 1

    AOE ID 34413
    NORAD ID 34413
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 56726
    NORAD ID 56726
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 2251 DEB IRIDIUM 181
    Time of Closest Approach 2026-09-16T13:44:21+0000
    Collision Probability (Pc) 1.760604E-6
    Conjunction Distance (km) 2.304 km
    Relative Speed (km/s) 11.442 km/s
    Conjunction Risk Parameters R (Radial): -0.998 | I (In-track): -1.332 | C (Cross-track): -1.591
    Collision Risk Index (CRI) 0.4
    X Position (km) -2091.874 -2092.863
    Position Y (km) -256.906 -258.877
    Position Z (km) 6797.083 6797.748
    Velocity X (km/s) 3.488 -6.745
    Velocity Y (km/s) -6.601 -2.409
    Velocity Z (km/s) 0.77 -2.164

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB IRIDIUM 181
    Semimajor Axis (a) 7167.962 km 7125.716 km
    Eccentricity (e) 0.009101 0.000212
    Inclination (i) 74.0285° 86.4542°
    RAAN 122.3153° 18.9947°
    Perigee Argument 134.2962° 98.5713°
    Mean Anomaly (M) 18.3866° 261.5729°
    Apogee 855.063 km 749.092 km
    Perigee 724.587 km 746.066 km
    Orbit Epoch 2026-09-15T01:08:07+0000 2026-09-15T13:57:05+0000

    COSMOS 2251 DEB & IRIDIUM 181 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & IRIDIUM 181 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & IRIDIUM 181 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & IRIDIUM 181 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 181Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 181Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data