Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.818006E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-21T05:34:22+0800
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    1 Object 1

    AOE ID 51139
    NORAD ID 51139
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 52102
    NORAD ID 52102
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-3172 STARLINK-3709
    Time of Closest Approach 2026-10-23T04:42:57+0000
    Collision Probability (Pc) 1.818006E-6
    Conjunction Distance (km) 2.272 km
    Relative Speed (km/s) 11.493 km/s
    Conjunction Risk Parameters R (Radial): 1.309 | I (In-track): 1.216 | C (Cross-track): 1.403
    Collision Risk Index (CRI) 0.4
    X Position (km) -4564.736 -4566.868
    Position Y (km) 4225.651 4225.095
    Position Z (km) 2838.585 2839.137
    Velocity X (km/s) -5.176 -1.662
    Velocity Y (km/s) -2.068 -5.319
    Velocity Z (km/s) -5.224 5.224

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3172 STARLINK-3709
    Semimajor Axis (a) 6840.826 km 6842.529 km
    Eccentricity (e) 0.000136 0.000072
    Inclination (i) 53.1607° 53.1597°
    RAAN 351.3510° 129.7287°
    Perigee Argument 88.6561° 34.9580°
    Mean Anomaly (M) 271.4597° 325.1470°
    Apogee 463.617 km 464.885 km
    Perigee 461.761 km 463.899 km
    Orbit Epoch 2026-10-20T04:09:43+0000 2026-10-20T12:28:02+0000

    STARLINK-3172 & STARLINK-3709 Collision Probability (Pc) Trend

    STARLINK-3172 & STARLINK-3709 Collision Probability (Pc) TrendNot Available

    STARLINK-3172 & STARLINK-3709 Miss Distance (Miss Distance) Trend

    STARLINK-3172 & STARLINK-3709 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3172Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-3709Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3172Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-3709Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3172

    No nearby objects data