Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.112245E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T11:49:16+0800
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    1 Object 1

    AOE ID 12139
    NORAD ID 12139
    Object Type ROCKET BODY
    Country
    CIS CIS
    VS

    2 Object 2

    AOE ID 53964
    NORAD ID 53964
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-8 R/B STARLINK-4633
    Time of Closest Approach 2026-09-04T23:17:34+0000
    Collision Probability (Pc) 2.112245E-6
    Conjunction Distance (km) 1.664 km
    Relative Speed (km/s) 4.13 km/s
    Conjunction Risk Parameters R (Radial): 1.656 | I (In-track): -0.166 | C (Cross-track): -0.02
    Collision Risk Index (CRI) 0.41
    X Position (km) -3421.917 -3422.719
    Position Y (km) 5602.704 5604.019
    Position Z (km) -1927.348 -1927.975
    Velocity X (km/s) -2.037 -4.941
    Velocity Y (km/s) 1.452 -1.057
    Velocity Z (km/s) 7.244 5.721

    Orbital Parameters 国际轨道数据源

    Parameter SL-8 R/B STARLINK-4633
    Semimajor Axis (a) 6893.151 km 6840.863 km
    Eccentricity (e) 0.023972 0.000117
    Inclination (i) 82.9366° 53.1617°
    RAAN 124.6063° 139.8995°
    Perigee Argument 276.2791° 77.1787°
    Mean Anomaly (M) 81.1190° 282.9346°
    Apogee 680.254 km 463.525 km
    Perigee 349.774 km 461.927 km
    Orbit Epoch 2026-09-03T18:52:08+0000 2026-09-03T17:40:50+0000

    SL-8 R/B & STARLINK-4633 Collision Probability (Pc) Trend

    SL-8 R/B & STARLINK-4633 Collision Probability (Pc) TrendNot Available

    SL-8 R/B & STARLINK-4633 Miss Distance (Miss Distance) Trend

    SL-8 R/B & STARLINK-4633 Miss Distance (Miss Distance) TrendNot Available

    SL-8 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4633Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-8 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4633Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-8 R/B

    No nearby objects data