Conjunction Event Detail

    High Risk
    High collision probability. Maneuver recommended for primary asset.
    3.355377E-4
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:49:19+0800
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    1 Object 1

    AOE ID 53221
    NORAD ID 53221
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 54835
    NORAD ID 54835
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4377 STARLINK-5389
    Time of Closest Approach 2026-09-04T11:05:13+0000
    Collision Probability (Pc) 3.355377E-4
    Conjunction Distance (km) 0.365 km
    Relative Speed (km/s) 11.61 km/s
    Conjunction Risk Parameters R (Radial): -0.36 | I (In-track): 0.033 | C (Cross-track): 0.048
    Collision Risk Index (CRI) 0.86
    X Position (km) -2178.077 -2177.988
    Position Y (km) 4524.465 4524.184
    Position Z (km) -4679.197 -4678.982
    Velocity X (km/s) 3.406 -6.837
    Velocity Y (km/s) -4.033 -3.36
    Velocity Z (km/s) -5.489 -0.066

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4377 STARLINK-5389
    Semimajor Axis (a) 6856.763 km 6861.240 km
    Eccentricity (e) 0.000063 0.000202
    Inclination (i) 97.2841° 43.0042°
    RAAN 300.7940° 223.9770°
    Perigee Argument 65.7066° 260.0572°
    Mean Anomaly (M) 1.4506° 100.0052°
    Apogee 479.058 km 484.487 km
    Perigee 478.194 km 481.719 km
    Orbit Epoch 2026-09-02T16:00:02+0000 2026-09-01T09:43:34+0000

    STARLINK-4377 & STARLINK-5389 Collision Probability (Pc) Trend

    STARLINK-4377 & STARLINK-5389 Collision Probability (Pc) TrendNot Available

    STARLINK-4377 & STARLINK-5389 Miss Distance (Miss Distance) Trend

    STARLINK-4377 & STARLINK-5389 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4377Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5389Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4377Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5389Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4377

    No nearby objects data