Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.584346E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T10:36:12+0800
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    1 Object 1

    AOE ID 53469
    NORAD ID 53469
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 59725
    NORAD ID 59725
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4399 STARLINK-31820
    Time of Closest Approach 2026-10-20T14:23:07+0000
    Collision Probability (Pc) 1.584346E-6
    Conjunction Distance (km) 2.552 km
    Relative Speed (km/s) 13.217 km/s
    Conjunction Risk Parameters R (Radial): -2.494 | I (In-track): -0.255 | C (Cross-track): -0.468
    Collision Risk Index (CRI) 0.39
    X Position (km) 2176.685 2177.278
    Position Y (km) 3753.733 3755.539
    Position Z (km) -5302.777 -5304.478
    Velocity X (km/s) 4.218 -7.192
    Velocity Y (km/s) 4.231 1.983
    Velocity Z (km/s) 4.73 -1.549

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4399 STARLINK-31820
    Semimajor Axis (a) 6843.977 km 6848.858 km
    Eccentricity (e) 0.000182 0.000124
    Inclination (i) 97.2873° 53.1586°
    RAAN 49.1023° 185.5943°
    Perigee Argument 107.7947° 70.5207°
    Mean Anomaly (M) 252.3493° 289.5928°
    Apogee 467.083 km 471.572 km
    Perigee 464.597 km 469.870 km
    Orbit Epoch 2026-10-18T18:45:20+0000 2026-10-18T00:12:08+0000

    STARLINK-4399 & STARLINK-31820 Collision Probability (Pc) Trend

    STARLINK-4399 & STARLINK-31820 Collision Probability (Pc) TrendNot Available

    STARLINK-4399 & STARLINK-31820 Miss Distance (Miss Distance) Trend

    STARLINK-4399 & STARLINK-31820 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4399Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-31820Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4399Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31820Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4399

    No nearby objects data