Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.817446E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T03:44:39+0800
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    1 Object 1

    AOE ID 53728
    NORAD ID 53728
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64453
    NORAD ID 64453
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4640 STARLINK-34221
    Time of Closest Approach 2026-10-21T19:48:45+0000
    Collision Probability (Pc) 1.817446E-6
    Conjunction Distance (km) 2.313 km
    Relative Speed (km/s) 12.218 km/s
    Conjunction Risk Parameters R (Radial): -1.523 | I (In-track): 1.039 | C (Cross-track): -1.396
    Collision Risk Index (CRI) 0.4
    X Position (km) 2884.418 2885.352
    Position Y (km) -6196.371 -6194.257
    Position Z (km) -320.414 -320.35
    Velocity X (km/s) 4.271 4.035
    Velocity Y (km/s) 1.681 2.188
    Velocity Z (km/s) 6.102 -6.103

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4640 STARLINK-34221
    Semimajor Axis (a) 6840.880 km 6840.685 km
    Eccentricity (e) 0.000124 0.000067
    Inclination (i) 53.1590° 53.1591°
    RAAN 310.0705° 126.2165°
    Perigee Argument 93.4343° 144.0509°
    Mean Anomaly (M) 266.6801° 216.0538°
    Apogee 463.592 km 463.005 km
    Perigee 461.894 km 462.091 km
    Orbit Epoch 2026-10-19T00:36:24+0000 2026-10-18T23:48:19+0000

    STARLINK-4640 & STARLINK-34221 Collision Probability (Pc) Trend

    STARLINK-4640 & STARLINK-34221 Collision Probability (Pc) TrendNot Available

    STARLINK-4640 & STARLINK-34221 Miss Distance (Miss Distance) Trend

    STARLINK-4640 & STARLINK-34221 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4640Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34221Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4640Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34221Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4640

    No nearby objects data