Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.341807E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T07:43:07+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 3900
    NORAD ID 3900
    Object Type DEBRIS
    Country
    CIS CIS
    ← VS →

    2 Object 2

    AOE ID 57750
    NORAD ID 57750
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter COSMOS 252 DEB STARLINK-30357
    Time of Closest Approach 2026-10-21T02:06:47+0000
    Collision Probability (Pc) 9.341807E-7
    Conjunction Distance (km) 2.833 km
    Relative Speed (km/s) 6.907 km/s
    Conjunction Risk Parameters R (Radial): 2.237 | I (In-track): 1.561 | C (Cross-track): 0.766
    Collision Risk Index (CRI) 0.34
    X Position (km) -1534.566 -1535.45
    Position Y (km) -4791.42 -4788.933
    Position Z (km) -4671.803 -4670.777
    Velocity X (km/s) 3.423 7.332
    Velocity Y (km/s) -5.342 -2.045
    Velocity Z (km/s) 4.329 -0.313

    Orbital Parameters 国际轨道数据源

    Parameter COSMOS 252 DEB STARLINK-30357
    Semimajor Axis (a) 6981.853 km 6861.266 km
    Eccentricity (e) 0.017573 0.000167
    Inclination (i) 62.1967° 43.0016°
    RAAN 284.0527° 352.0161°
    Perigee Argument 301.3524° 273.9104°
    Mean Anomaly (M) 57.0467° 86.1557°
    Apogee 726.409 km 484.273 km
    Perigee 481.023 km 481.985 km
    Orbit Epoch 2026-10-20T08:35:36+0000 2026-10-20T04:33:03+0000

    COSMOS 252 DEB & STARLINK-30357 Collision Probability (Pc) Trend

    COSMOS 252 DEB & STARLINK-30357 Collision Probability (Pc) TrendNot Available

    COSMOS 252 DEB & STARLINK-30357 Miss Distance (Miss Distance) Trend

    COSMOS 252 DEB & STARLINK-30357 Miss Distance (Miss Distance) TrendNot Available

    COSMOS 252 DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-30357Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    COSMOS 252 DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-30357Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with COSMOS 252 DEB

    No nearby objects data