Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.345606E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-12T09:15:07+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) 1.345606E-6
    Conjunction Distance (km) 2.464 km
    Relative Speed (km/s) 9.025 km/s
    Conjunction Risk Parameters R (Radial): -2.459 | I (In-track): -0.104 | C (Cross-track): 0.079
    Collision Risk Index (CRI) 0.38
    X Position (km) -4252.994 -4251.381
    Position Y (km) 3705.116 3703.786
    Position Z (km) 3897.845 3896.543
    Velocity X (km/s) -5.954 -2.39
    Velocity Y (km/s) -3.807 3.783
    Velocity Z (km/s) -2.87 -6.206

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-31721 ELECTRON KICK STAGE R/B
    Semimajor Axis (a) 6861.181 km 6898.513 km
    Eccentricity (e) 0.000110 0.006314
    Inclination (i) 43.0024° 97.9295°
    RAAN 13.2050° 312.2806°
    Perigee Argument 265.7570° 161.8835°
    Mean Anomaly (M) 94.3156° 198.4666°
    Apogee 483.799 km 563.934 km
    Perigee 482.289 km 476.818 km
    Orbit Epoch 2026-09-11T14:59:17+0000 2026-09-11T16:12:27+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