Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.572078E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T20:32:48+0800
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    1 Object 1

    AOE ID 59217
    NORAD ID 59217
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 61938
    NORAD ID 61938
    Object Type ROCKET BODY
    Country
    CN CN

    Conjunction Constraints

    Parameter STARLINK-31499 CZ-4B R/B
    Time of Closest Approach 2026-10-31T02:38:44+0000
    Collision Probability (Pc) 2.572078E-6
    Conjunction Distance (km) 2.046 km
    Relative Speed (km/s) 13.704 km/s
    Conjunction Risk Parameters R (Radial): 2.045 | I (In-track): -0.032 | C (Cross-track): 0.081
    Collision Risk Index (CRI) 0.43
    X Position (km) -4415.261 -4416.554
    Position Y (km) -1059.065 -1059.31
    Position Z (km) 5107.098 5108.665
    Velocity X (km/s) 4 -5.868
    Velocity Y (km/s) -6.132 0.224
    Velocity Z (km/s) 2.181 -4.892

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-31499 CZ-4B R/B
    Semimajor Axis (a) 6840.882 km 6851.546 km
    Eccentricity (e) 0.000140 0.012152
    Inclination (i) 53.1611° 97.9261°
    RAAN 149.1599° 1.8637°
    Perigee Argument 99.3672° 56.7465°
    Mean Anomaly (M) 260.7488° 304.5350°
    Apogee 463.701 km 556.672 km
    Perigee 461.789 km 390.146 km
    Orbit Epoch 2026-10-28T07:07:33+0000 2026-10-28T16:02:29+0000

    STARLINK-31499 & CZ-4B R/B Collision Probability (Pc) Trend

    STARLINK-31499 & CZ-4B R/B Collision Probability (Pc) TrendNot Available

    STARLINK-31499 & CZ-4B R/B Miss Distance (Miss Distance) Trend

    STARLINK-31499 & CZ-4B R/B Miss Distance (Miss Distance) TrendNot Available

    STARLINK-31499Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-4B R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-31499Collision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-4B R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-31499

    No nearby objects data