Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.393495E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T15:57:53+0800
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    1 Object 1

    AOE ID 52503
    NORAD ID 52503
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 65916
    NORAD ID 65916
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3861 STARLINK-35521
    Time of Closest Approach 2026-09-05T14:57:11+0000
    Collision Probability (Pc) 1.393495E-6
    Conjunction Distance (km) 2.458 km
    Relative Speed (km/s) 9.51 km/s
    Conjunction Risk Parameters R (Radial): 2.447 | I (In-track): 0.185 | C (Cross-track): -0.146
    Collision Risk Index (CRI) 0.38
    X Position (km) -329.863 -329.746
    Position Y (km) -5237.249 -5239.136
    Position Z (km) -4391.599 -4393.168
    Velocity X (km/s) 5.762 6.144
    Velocity Y (km/s) -3.419 2.669
    Velocity Z (km/s) 3.648 -3.647

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3861 STARLINK-35521
    Semimajor Axis (a) 6837.856 km 6840.802 km
    Eccentricity (e) 0.000111 0.000041
    Inclination (i) 53.1606° 53.1592°
    RAAN 314.3549° 55.6544°
    Perigee Argument 87.8625° 31.3706°
    Mean Anomaly (M) 272.2505° 328.7321°
    Apogee 460.475 km 462.944 km
    Perigee 458.963 km 462.386 km
    Orbit Epoch 2026-09-03T16:19:06+0000 2026-09-03T21:17:51+0000

    STARLINK-3861 & STARLINK-35521 Collision Probability (Pc) Trend

    STARLINK-3861 & STARLINK-35521 Collision Probability (Pc) TrendNot Available

    STARLINK-3861 & STARLINK-35521 Miss Distance (Miss Distance) Trend

    STARLINK-3861 & STARLINK-35521 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3861Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-35521Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3861Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-35521Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3861

    No nearby objects data