Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.253486E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-11T14:22:22+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 53699
    NORAD ID 53699
    Object Type ROCKET BODY
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 59783
    NORAD ID 59783
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4C R/B STARLINK-31868
    Time of Closest Approach 2026-09-12T19:46:20+0000
    Collision Probability (Pc) 1.253486E-6
    Conjunction Distance (km) 2.943 km
    Relative Speed (km/s) 12.651 km/s
    Conjunction Risk Parameters R (Radial): -2.826 | I (In-track): 0.468 | C (Cross-track): 0.671
    Collision Risk Index (CRI) 0.37
    X Position (km) -4643.307 -4641.283
    Position Y (km) 2154.249 2152.681
    Position Z (km) -4577.741 -4576.293
    Velocity X (km/s) 5.145 -4.027
    Velocity Y (km/s) -0.802 -6.374
    Velocity Z (km/s) -5.611 1.087

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4C R/B STARLINK-31868
    Semimajor Axis (a) 6934.604 km 6861.193 km
    Eccentricity (e) 0.010731 0.000064
    Inclination (i) 98.0466° 43.0008°
    RAAN 340.1924° 248.3260°
    Perigee Argument 224.0594° 207.4758°
    Mean Anomaly (M) 135.2044° 152.6059°
    Apogee 630.879 km 483.498 km
    Perigee 482.055 km 482.614 km
    Orbit Epoch 2026-09-10T17:15:53+0000 2026-09-09T08:56:27+0000

    CZ-4C R/B & STARLINK-31868 Collision Probability (Pc) Trend

    CZ-4C R/B & STARLINK-31868 Collision Probability (Pc) TrendNot Available

    CZ-4C R/B & STARLINK-31868 Miss Distance (Miss Distance) Trend

    CZ-4C R/B & STARLINK-31868 Miss Distance (Miss Distance) TrendNot Available

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

    Object 1 Miss Distance TrendNot Available

    STARLINK-31868Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4C R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-31868Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4C R/B

    No nearby objects data