Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    6.469321E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-05T16:13:04+0800
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    1 Object 1

    AOE ID 52913
    NORAD ID 52913
    Object Type ROCKET BODY
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 68845
    NORAD ID 68845
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4C R/B STARLINK-37539
    Time of Closest Approach 2026-09-05T12:39:25+0000
    Collision Probability (Pc) 6.469321E-7
    Conjunction Distance (km) 2.749 km
    Relative Speed (km/s) 3.225 km/s
    Conjunction Risk Parameters R (Radial): 2.616 | I (In-track): 0.82 | C (Cross-track): -0.203
    Collision Risk Index (CRI) 0.31
    X Position (km) 802.258 802.289
    Position Y (km) -518.491 -519.487
    Position Z (km) -6782.596 -6785.158
    Velocity X (km/s) -4.124 -1.136
    Velocity Y (km/s) -6.402 -7.517
    Velocity Z (km/s) -0.031 0.442

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4C R/B STARLINK-37539
    Semimajor Axis (a) 6838.829 km 6843.700 km
    Eccentricity (e) 0.004243 0.000178
    Inclination (i) 98.0109° 97.2844°
    RAAN 236.5609° 260.3073°
    Perigee Argument 175.1136° 84.3857°
    Mean Anomaly (M) 185.0529° 275.7588°
    Apogee 489.709 km 466.779 km
    Perigee 431.675 km 464.347 km
    Orbit Epoch 2026-09-04T22:58:16+0000 2026-09-03T23:26:53+0000

    CZ-4C R/B & STARLINK-37539 Collision Probability (Pc) Trend

    CZ-4C R/B & STARLINK-37539 Collision Probability (Pc) TrendNot Available

    CZ-4C R/B & STARLINK-37539 Miss Distance (Miss Distance) Trend

    CZ-4C R/B & STARLINK-37539 Miss Distance (Miss Distance) TrendNot Available

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

    Object 1 Miss Distance TrendNot Available

    STARLINK-37539Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4C R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-37539Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4C R/B

    No nearby objects data