Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.555167E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-08-29T12:37:49+0800
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    1 Object 1

    Name IPEX
    AOE ID 39471
    NORAD ID 39471
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 52994
    NORAD ID 52994
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter IPEX STARLINK-4256
    Time of Closest Approach 2026-08-29T10:19:06+0000
    Collision Probability (Pc) 1.555167E-6
    Conjunction Distance (km) 2.72 km
    Relative Speed (km/s) 15.251 km/s
    Conjunction Risk Parameters R (Radial): -1.625 | I (In-track): 0.22 | C (Cross-track): 2.169
    Collision Risk Index (CRI) 0.39
    X Position (km) 1844.044 1842.662
    Position Y (km) 4743.101 4743.513
    Position Z (km) 4564.877 4562.572
    Velocity X (km/s) 6.264 -6.831
    Velocity Y (km/s) 1.678 -0.594
    Velocity Z (km/s) -4.112 3.367

    Orbital Parameters 国际轨道数据源

    Parameter IPEX STARLINK-4256
    Semimajor Axis (a) 6916.888 km 6840.878 km
    Eccentricity (e) 0.017122 0.000097
    Inclination (i) 120.4649° 53.1614°
    RAAN 214.7796° 33.5907°
    Perigee Argument 77.4948° 68.8554°
    Mean Anomaly (M) 284.5217° 291.2553°
    Apogee 657.180 km 463.407 km
    Perigee 420.322 km 462.075 km
    Orbit Epoch 2026-08-28T21:02:39+0000 2026-08-27T22:07:05+0000

    IPEX & STARLINK-4256 Collision Probability (Pc) Trend

    IPEX & STARLINK-4256 Collision Probability (Pc) TrendNot Available

    IPEX & STARLINK-4256 Miss Distance (Miss Distance) Trend

    IPEX & STARLINK-4256 Miss Distance (Miss Distance) TrendNot Available

    IPEXMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4256Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    IPEXCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4256Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with IPEX

    No nearby objects data