Conjunction Event Detail

    Extreme Risk
    Extreme collision probability. Maneuver strongly recommended for primary asset.
    1.563989E-3
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T18:07:29+0800
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    1 Object 1

    AOE ID 25575
    NORAD ID 25575
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 67796
    NORAD ID 67796
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ISS (UNITY) DRAGON FREEDOM 3
    Time of Closest Approach 2026-09-10T16:13:43+0000
    Collision Probability (Pc) 1.563989E-3
    Conjunction Distance (km) 0.012 km
    Relative Speed (km/s) 0.001 km/s
    Conjunction Risk Parameters R (Radial): -0.01 | I (In-track): 0.002 | C (Cross-track): 0.005
    Collision Risk Index (CRI) 0.99
    X Position (km) 3706.612 3706.619
    Position Y (km) -2023.126 -2023.132
    Position Z (km) 5314.152 5314.158
    Velocity X (km/s) 3.981 3.981
    Velocity Y (km/s) 6.544 6.544
    Velocity Z (km/s) -0.287 -0.288

    Orbital Parameters 国际轨道数据源

    Parameter ISS (UNITY) DRAGON FREEDOM 3
    Semimajor Axis (a) 6797.596 km 6797.611 km
    Eccentricity (e) 0.000499 0.000501
    Inclination (i) 51.6301° 51.6301°
    RAAN 239.6211° 241.8557°
    Perigee Argument 124.3002° 123.3010°
    Mean Anomaly (M) 235.8459° 236.8458°
    Apogee 422.852 km 422.879 km
    Perigee 416.066 km 416.069 km
    Orbit Epoch 2026-09-10T03:26:39+0000 2026-09-09T16:36:21+0000

    ISS (UNITY) & DRAGON FREEDOM 3 Collision Probability (Pc) Trend

    ISS (UNITY) & DRAGON FREEDOM 3 Collision Probability (Pc) TrendNot Available

    ISS (UNITY) & DRAGON FREEDOM 3 Miss Distance (Miss Distance) Trend

    ISS (UNITY) & DRAGON FREEDOM 3 Miss Distance (Miss Distance) TrendNot Available

    ISS (UNITY)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    DRAGON FREEDOM 3Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ISS (UNITY)Collision Probability Trend

    Object 1 Probability TrendNot Available

    DRAGON FREEDOM 3Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ISS (UNITY)

    No nearby objects data