Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.714118E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T06:20:12+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 53400
    NORAD ID 53400
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 63703
    NORAD ID 63703
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4520 STARLINK-33868
    Time of Closest Approach 2026-10-21T21:18:08+0000
    Collision Probability (Pc) 9.714118E-7
    Conjunction Distance (km) 2.796 km
    Relative Speed (km/s) 7.185 km/s
    Conjunction Risk Parameters R (Radial): 2.719 | I (In-track): -0.569 | C (Cross-track): 0.313
    Collision Risk Index (CRI) 0.35
    X Position (km) -2382.347 -2382.738
    Position Y (km) 3997.773 3999.698
    Position Z (km) -5017.573 -5019.561
    Velocity X (km/s) -7.127 -4.431
    Velocity Y (km/s) -1.181 -5.704
    Velocity Z (km/s) 2.445 -2.444

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4520 STARLINK-33868
    Semimajor Axis (a) 6837.916 km 6840.835 km
    Eccentricity (e) 0.000164 0.000158
    Inclination (i) 53.1561° 53.1548°
    RAAN 183.2147° 254.0516°
    Perigee Argument 79.4175° 87.5908°
    Mean Anomaly (M) 280.7013° 272.5275°
    Apogee 460.902 km 463.777 km
    Perigee 458.656 km 461.619 km
    Orbit Epoch 2026-10-20T01:50:53+0000 2026-10-20T08:16:46+0000

    STARLINK-4520 & STARLINK-33868 Collision Probability (Pc) Trend

    STARLINK-4520 & STARLINK-33868 Collision Probability (Pc) TrendNot Available

    STARLINK-4520 & STARLINK-33868 Miss Distance (Miss Distance) Trend

    STARLINK-4520 & STARLINK-33868 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4520Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-33868Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4520Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-33868Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4520

    No nearby objects data