Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.77705E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-28T21:51:45+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 53289
    NORAD ID 53289
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3657 STARLINK-4176
    Time of Closest Approach 2026-10-29T03:26:31+0000
    Collision Probability (Pc) 2.77705E-6
    Conjunction Distance (km) 1.921 km
    Relative Speed (km/s) 11.963 km/s
    Conjunction Risk Parameters R (Radial): 0.599 | I (In-track): 1.131 | C (Cross-track): 1.432
    Collision Risk Index (CRI) 0.44
    X Position (km) -6163.943 -6163.835
    Position Y (km) -2333.687 -2335.597
    Position Z (km) 1826.102 1826.267
    Velocity X (km/s) 0.181 3.183
    Velocity Y (km/s) -5.011 -3.874
    Velocity Z (km/s) -5.762 5.762

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3657 STARLINK-4176
    Semimajor Axis (a) 6840.847 km 6841.187 km
    Eccentricity (e) 0.000118 0.000085
    Inclination (i) 53.1620° 53.1595°
    RAAN 39.5606° 194.2621°
    Perigee Argument 88.6590° 299.8621°
    Mean Anomaly (M) 271.4548° 60.2297°
    Apogee 463.517 km 463.632 km
    Perigee 461.903 km 462.468 km
    Orbit Epoch 2026-10-27T16:21:16+0000 2026-10-27T23:12:59+0000

    STARLINK-3657 & STARLINK-4176 Collision Probability (Pc) Trend

    STARLINK-3657 & STARLINK-4176 Collision Probability (Pc) TrendNot Available

    STARLINK-3657 & STARLINK-4176 Miss Distance (Miss Distance) Trend

    STARLINK-3657 & STARLINK-4176 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3657Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4176Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3657Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4176Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3657

    No nearby objects data