Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.002899E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T23:26:15+0800
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    1 Object 1

    AOE ID 51990
    NORAD ID 51990
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 62438
    NORAD ID 62438
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3657 STARLINK-32721
    Time of Closest Approach 2026-09-06T18:23:18+0000
    Collision Probability (Pc) 1.002899E-6
    Conjunction Distance (km) 2.651 km
    Relative Speed (km/s) 6.654 km/s
    Conjunction Risk Parameters R (Radial): -2.128 | I (In-track): 1.425 | C (Cross-track): 0.682
    Collision Risk Index (CRI) 0.35
    X Position (km) 4115.022 4115.624
    Position Y (km) -1943.375 -1945.406
    Position Z (km) 5093.937 5095.528
    Velocity X (km/s) 0.692 5.184
    Velocity Y (km/s) 7.28 5.157
    Velocity Z (km/s) 2.213 -2.212

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3657 STARLINK-32721
    Semimajor Axis (a) 6837.872 km 6840.847 km
    Eccentricity (e) 0.000117 0.000199
    Inclination (i) 53.1595° 53.1586°
    RAAN 289.6117° 224.9511°
    Perigee Argument 88.7124° 89.0520°
    Mean Anomaly (M) 271.4013° 271.0710°
    Apogee 460.535 km 464.075 km
    Perigee 458.935 km 461.345 km
    Orbit Epoch 2026-09-04T05:09:48+0000 2026-09-03T22:41:17+0000

    STARLINK-3657 & STARLINK-32721 Collision Probability (Pc) Trend

    STARLINK-3657 & STARLINK-32721 Collision Probability (Pc) TrendNot Available

    STARLINK-3657 & STARLINK-32721 Miss Distance (Miss Distance) Trend

    STARLINK-3657 & STARLINK-32721 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3657Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-32721Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3657Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-32721Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3657

    No nearby objects data