Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.145427E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T16:15:33+0800
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    1 Object 1

    AOE ID 59536
    NORAD ID 59536
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 60085
    NORAD ID 60085
    Object Type ROCKET BODY
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-31721 ELECTRON KICK STAGE R/B
    Time of Closest Approach 2026-09-12T18:12:12+0000
    Collision Probability (Pc) 1.145427E-6
    Conjunction Distance (km) 2.724 km
    Relative Speed (km/s) 9.024 km/s
    Conjunction Risk Parameters R (Radial): 2.494 | I (In-track): 0.88 | C (Cross-track): 0.653
    Collision Risk Index (CRI) 0.36
    X Position (km) -4253.587 -4251.296
    Position Y (km) 3704.934 3703.595
    Position Z (km) 3897.489 3896.875
    Velocity X (km/s) -5.954 -2.39
    Velocity Y (km/s) -3.807 3.784
    Velocity Z (km/s) -2.871 -6.205

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-31721 ELECTRON KICK STAGE R/B
    Semimajor Axis (a) 6861.194 km 6898.545 km
    Eccentricity (e) 0.000104 0.006309
    Inclination (i) 43.0033° 97.9301°
    RAAN 27.6059° 311.3160°
    Perigee Argument 270.3829° 165.0013°
    Mean Anomaly (M) 89.6904° 195.3108°
    Apogee 483.771 km 563.931 km
    Perigee 482.343 km 476.885 km
    Orbit Epoch 2026-09-09T01:47:11+0000 2026-09-10T18:01:05+0000

    STARLINK-31721 & ELECTRON KICK STAGE R/B Collision Probability (Pc) Trend

    STARLINK-31721 & ELECTRON KICK STAGE R/B Collision Probability (Pc) TrendNot Available

    STARLINK-31721 & ELECTRON KICK STAGE R/B Miss Distance (Miss Distance) Trend

    STARLINK-31721 & ELECTRON KICK STAGE R/B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-31721Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    ELECTRON KICK STAGE R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-31721Collision Probability Trend

    Object 1 Probability TrendNot Available

    ELECTRON KICK STAGE R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-31721

    No nearby objects data