Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    8.849504E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-06T18:25:52+0800
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    1 Object 1

    AOE ID 28415
    NORAD ID 28415
    Object Type ROCKET BODY
    Country
    CN CN
    VS

    2 Object 2

    AOE ID 46063
    NORAD ID 46063
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter CZ-4B R/B STARLINK-1577
    Time of Closest Approach 2026-09-08T09:11:30+0000
    Collision Probability (Pc) 8.849504E-6
    Conjunction Distance (km) 1.245 km
    Relative Speed (km/s) 8.892 km/s
    Conjunction Risk Parameters R (Radial): 0.035 | I (In-track): -1.007 | C (Cross-track): 0.731
    Collision Risk Index (CRI) 0.54
    X Position (km) 1717.928 1717.144
    Position Y (km) -4391.462 -4390.917
    Position Z (km) -4975.487 -4976.286
    Velocity X (km/s) 0.657 7.174
    Velocity Y (km/s) -5.56 -0.099
    Velocity Z (km/s) 5.17 2.567

    Orbital Parameters 国际轨道数据源

    Parameter CZ-4B R/B STARLINK-1577
    Semimajor Axis (a) 6849.037 km 6848.849 km
    Eccentricity (e) 0.003141 0.000331
    Inclination (i) 97.3329° 53.1589°
    RAAN 281.2373° 2.4547°
    Perigee Argument 49.5338° 60.0756°
    Mean Anomaly (M) 310.8634° 300.0574°
    Apogee 492.412 km 472.977 km
    Perigee 449.388 km 468.447 km
    Orbit Epoch 2026-09-06T00:57:02+0000 2026-09-04T08:23:04+0000

    CZ-4B R/B & STARLINK-1577 Collision Probability (Pc) Trend

    CZ-4B R/B & STARLINK-1577 Collision Probability (Pc) TrendNot Available

    CZ-4B R/B & STARLINK-1577 Miss Distance (Miss Distance) Trend

    CZ-4B R/B & STARLINK-1577 Miss Distance (Miss Distance) TrendNot Available

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

    Object 1 Miss Distance TrendNot Available

    STARLINK-1577Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    CZ-4B R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-1577Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with CZ-4B R/B

    No nearby objects data