Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.052597E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T07:27:37+0800
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    1 Object 1

    AOE ID 36061
    NORAD ID 36061
    Object Type DEBRIS
    Country
    CIS CIS
    VS

    2 Object 2

    Name HEAD-1
    AOE ID 43011
    NORAD ID 43011
    Object Type PAYLOAD
    Country
    CN CN

    Conjunction Constraints

    Parameter COSMOS 2251 DEB HEAD-1
    Time of Closest Approach 2026-09-16T13:38:20+0000
    Collision Probability (Pc) 1.052597E-6
    Conjunction Distance (km) 2.879 km
    Relative Speed (km/s) 8.869 km/s
    Conjunction Risk Parameters R (Radial): 2.482 | I (In-track): -1.175 | C (Cross-track): 0.866
    Collision Risk Index (CRI) 0.35
    X Position (km) -590.396 -589.614
    Position Y (km) -2584.972 -2582.846
    Position Z (km) 6668.031 6666.254
    Velocity X (km/s) 6.431 -1.665
    Velocity Y (km/s) 3.263 6.821
    Velocity Z (km/s) 1.819 2.49

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 2251 DEB HEAD-1
    Semimajor Axis (a) 7156.210 km 7173.737 km
    Eccentricity (e) 0.004005 0.000885
    Inclination (i) 74.0225° 98.9536°
    RAAN 219.1124° 277.4809°
    Perigee Argument 242.9502° 256.9393°
    Mean Anomaly (M) 116.7560° 103.0800°
    Apogee 806.735 km 801.951 km
    Perigee 749.411 km 789.249 km
    Orbit Epoch 2026-09-12T03:48:46+0000 2026-09-13T14:43:29+0000

    COSMOS 2251 DEB & HEAD-1 Collision Probability (Pc) Trend

    COSMOS 2251 DEB & HEAD-1 Collision Probability (Pc) TrendNot Available

    COSMOS 2251 DEB & HEAD-1 Miss Distance (Miss Distance) Trend

    COSMOS 2251 DEB & HEAD-1 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 2251 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HEAD-1Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 2251 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    HEAD-1Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 2251 DEB

    No nearby objects data