Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    4.58416E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T16:07:24+0800
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    1 Object 1

    AOE ID 52564
    NORAD ID 52564
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 63243
    NORAD ID 63243
    Object Type PAYLOAD
    Country
    IT IT

    Conjunction Constraints

    Parameter STARLINK-3959 HERMES-2
    Time of Closest Approach 2026-09-14T03:26:55+0000
    Collision Probability (Pc) 4.58416E-6
    Conjunction Distance (km) 1.677 km
    Relative Speed (km/s) 14.247 km/s
    Conjunction Risk Parameters R (Radial): 0.498 | I (In-track): 0.583 | C (Cross-track): -1.491
    Collision Risk Index (CRI) 0.48
    X Position (km) 4336.402 4337.082
    Position Y (km) -2988.565 -2987.349
    Position Z (km) -4387.177 -4388.111
    Velocity X (km/s) 5.886 -4.679
    Velocity Y (km/s) 3.168 1.677
    Velocity Z (km/s) 3.663 -5.777

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3959 HERMES-2
    Semimajor Axis (a) 6848.875 km 6848.820 km
    Eccentricity (e) 0.000141 0.000510
    Inclination (i) 53.1621° 97.3762°
    RAAN 14.0525° 149.4524°
    Perigee Argument 91.2683° 144.4755°
    Mean Anomaly (M) 268.9795° 215.6827°
    Apogee 471.706 km 474.176 km
    Perigee 469.770 km 467.190 km
    Orbit Epoch 2026-09-12T00:00:02+0000 2026-09-11T22:45:06+0000

    STARLINK-3959 & HERMES-2 Collision Probability (Pc) Trend

    STARLINK-3959 & HERMES-2 Collision Probability (Pc) TrendNot Available

    STARLINK-3959 & HERMES-2 Miss Distance (Miss Distance) Trend

    STARLINK-3959 & HERMES-2 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3959Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    HERMES-2Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-3959Collision Probability Trend

    Object 1 Probability TrendNot Available

    HERMES-2Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3959

    No nearby objects data