Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    2.282378E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T11:16:19+0800
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    1 Object 1

    AOE ID 53547
    NORAD ID 53547
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 64540
    NORAD ID 64540
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-4474 ARCSTONE
    Time of Closest Approach 2026-09-04T19:59:38+0000
    Collision Probability (Pc) 2.282378E-5
    Conjunction Distance (km) 0.911 km
    Relative Speed (km/s) 7.353 km/s
    Conjunction Risk Parameters R (Radial): -0.91 | I (In-track): 0.005 | C (Cross-track): -0.01
    Collision Risk Index (CRI) 0.62
    X Position (km) 5494.134 5494.869
    Position Y (km) 59.608 59.606
    Position Z (km) 4066.523 4067.06
    Velocity X (km/s) -3.094 -4.477
    Velocity Y (km/s) 5.665 -1.283
    Velocity Z (km/s) 4.085 6.052

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-4474 ARCSTONE
    Semimajor Axis (a) 6840.866 km 6838.332 km
    Eccentricity (e) 0.000119 0.000153
    Inclination (i) 53.1592° 97.4679°
    RAAN 342.1882° 3.6108°
    Perigee Argument 83.3711° 258.7743°
    Mean Anomaly (M) 276.7426° 101.3328°
    Apogee 463.541 km 461.242 km
    Perigee 461.917 km 459.148 km
    Orbit Epoch 2026-09-01T13:37:21+0000 2026-09-02T06:49:42+0000

    STARLINK-4474 & ARCSTONE Collision Probability (Pc) Trend

    STARLINK-4474 & ARCSTONE Collision Probability (Pc) TrendNot Available

    STARLINK-4474 & ARCSTONE Miss Distance (Miss Distance) Trend

    STARLINK-4474 & ARCSTONE Miss Distance (Miss Distance) TrendNot Available

    STARLINK-4474Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    ARCSTONEMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-4474Collision Probability Trend

    Object 1 Probability TrendNot Available

    ARCSTONECollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-4474

    No nearby objects data