Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    4.737671E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-20T21:03:01+0800
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    1 Object 1

    AOE ID 54799
    NORAD ID 54799
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 64478
    NORAD ID 64478
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-5421 STARLINK-34490
    Time of Closest Approach 2026-10-21T17:38:30+0000
    Collision Probability (Pc) 4.737671E-6
    Conjunction Distance (km) 1.436 km
    Relative Speed (km/s) 7.181 km/s
    Conjunction Risk Parameters R (Radial): 0.447 | I (In-track): 1.204 | C (Cross-track): 0.644
    Collision Risk Index (CRI) 0.49
    X Position (km) -4429.693 -4429.571
    Position Y (km) -1391.344 -1392.736
    Position Z (km) 5013.308 5013.637
    Velocity X (km/s) -0.495 4.538
    Velocity Y (km/s) -7.224 -5.642
    Velocity Z (km/s) -2.436 2.435

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-5421 STARLINK-34490
    Semimajor Axis (a) 6840.830 km 6840.884 km
    Eccentricity (e) 0.000154 0.000139
    Inclination (i) 53.1579° 53.1568°
    RAAN 81.0291° 151.3740°
    Perigee Argument 87.2936° 97.8245°
    Mean Anomaly (M) 272.8242° 262.2915°
    Apogee 463.744 km 463.699 km
    Perigee 461.642 km 461.795 km
    Orbit Epoch 2026-10-19T16:41:28+0000 2026-10-20T00:42:35+0000

    STARLINK-5421 & STARLINK-34490 Collision Probability (Pc) Trend

    STARLINK-5421 & STARLINK-34490 Collision Probability (Pc) TrendNot Available

    STARLINK-5421 & STARLINK-34490 Miss Distance (Miss Distance) Trend

    STARLINK-5421 & STARLINK-34490 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-5421Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-34490Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-5421Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-34490Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-5421

    No nearby objects data