Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    8.790701E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T14:08:56+0800
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    1 Object 1

    Name ARC-1
    AOE ID 40969
    NORAD ID 40969
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 63115
    NORAD ID 63115
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ARC-1 STARLINK-11597
    Time of Closest Approach 2026-09-12T20:08:09+0000
    Collision Probability (Pc) 8.790701E-7
    Conjunction Distance (km) 2.262 km
    Relative Speed (km/s) 3.217 km/s
    Conjunction Risk Parameters R (Radial): -1.18 | I (In-track): -1.886 | C (Cross-track): 0.406
    Collision Risk Index (CRI) 0.34
    X Position (km) -6126.462 -6124.587
    Position Y (km) 1588.436 1589.207
    Position Z (km) -2301.149 -2302.152
    Velocity X (km/s) -3.147 -3.102
    Velocity Y (km/s) -2.796 -5.382
    Velocity Z (km/s) 6.456 4.544

    Orbital Parameters 国际轨道数据源

    Parameter ARC-1 STARLINK-11597
    Semimajor Axis (a) 6754.664 km 6734.566 km
    Eccentricity (e) 0.003477 0.000221
    Inclination (i) 64.7550° 43.0014°
    RAAN 182.4398° 206.0473°
    Perigee Argument 333.3070° 270.4623°
    Mean Anomaly (M) 26.6287° 89.5991°
    Apogee 400.011 km 357.919 km
    Perigee 353.043 km 354.939 km
    Orbit Epoch 2026-09-10T19:07:29+0000 2026-09-09T22:05:12+0000

    ARC-1 & STARLINK-11597 Collision Probability (Pc) Trend

    ARC-1 & STARLINK-11597 Collision Probability (Pc) TrendNot Available

    ARC-1 & STARLINK-11597 Miss Distance (Miss Distance) Trend

    ARC-1 & STARLINK-11597 Miss Distance (Miss Distance) TrendNot Available

    ARC-1Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-11597Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ARC-1Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-11597Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ARC-1

    No nearby objects data