Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.299386E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-16T01:20:36+0800
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    1 Object 1

    Name UNISAT
    AOE ID 26547
    NORAD ID 26547
    Object Type PAYLOAD
    Country
    IT IT
    ← VS →

    2 Object 2

    AOE ID 53676
    NORAD ID 53676
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter UNISAT STARLINK-4621
    Time of Closest Approach 2026-10-16T21:19:25+0000
    Collision Probability (Pc) 1.299386E-6
    Conjunction Distance (km) 2.65 km
    Relative Speed (km/s) 10.464 km/s
    Conjunction Risk Parameters R (Radial): -0.589 | I (In-track): 1.874 | C (Cross-track): -1.778
    Collision Risk Index (CRI) 0.37
    X Position (km) 2659.409 2658.075
    Position Y (km) -1665.813 -1663.584
    Position Z (km) -6129.985 -6130.508
    Velocity X (km/s) 1.911 -6.63
    Velocity Y (km/s) 7.285 1.653
    Velocity Z (km/s) -1.135 -3.324

    Orbital Parameters 国际轨道数据源

    Parameter UNISAT STARLINK-4621
    Semimajor Axis (a) 6911.967 km 6878.012 km
    Eccentricity (e) 0.004907 0.000112
    Inclination (i) 64.5430° 97.2834°
    RAAN 84.9121° 160.9334°
    Perigee Argument 282.5227° 70.1133°
    Mean Anomaly (M) 77.0406° 298.3010°
    Apogee 567.748 km 500.644 km
    Perigee 499.912 km 499.106 km
    Orbit Epoch 2026-10-15T04:27:19+0000 2026-10-15T08:00:02+0000

    UNISAT & STARLINK-4621 Collision Probability (Pc) Trend

    UNISAT & STARLINK-4621 Collision Probability (Pc) TrendNot Available

    UNISAT & STARLINK-4621 Miss Distance (Miss Distance) Trend

    UNISAT & STARLINK-4621 Miss Distance (Miss Distance) TrendNot Available

    UNISATMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4621Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    UNISATCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4621Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with UNISAT

    No nearby objects data