Conjunction Event Detail

    ⚠
    High Risk
    High collision probability. Maneuver recommended for primary asset.
    2.787672E-4
    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 2026-10-29T21:25:13+0000
    Collision Probability (Pc) 2.787672E-4
    Conjunction Distance (km) 0.408 km
    Relative Speed (km/s) 11.955 km/s
    Conjunction Risk Parameters R (Radial): 0.309 | I (In-track): -0.164 | C (Cross-track): 0.209
    Collision Risk Index (CRI) 0.84
    X Position (km) 6299.311 6299.674
    Position Y (km) 1955.206 1955.041
    Position Z (km) -1826.036 -1826.118
    Velocity X (km/s) 0.111 -2.926
    Velocity Y (km/s) 5.005 4.062
    Velocity Z (km/s) 5.762 -5.761

    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