Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.143384E-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 53197
    NORAD ID 53197
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter SL-8 R/B STARLINK-4403
    Time of Closest Approach 2026-09-05T04:59:38+0000
    Collision Probability (Pc) 2.143384E-6
    Conjunction Distance (km) 2.28 km
    Relative Speed (km/s) 15.272 km/s
    Conjunction Risk Parameters R (Radial): 2.242 | I (In-track): 0.021 | C (Cross-track): -0.418
    Collision Risk Index (CRI) 0.42
    X Position (km) 3816.311 3817.21
    Position Y (km) -5417.507 -5419.5
    Position Z (km) -1756.064 -1756.709
    Velocity X (km/s) -0.419 0.293
    Velocity Y (km/s) 2.283 -2.153
    Velocity Z (km/s) -7.288 7.308

    Orbital Parameters 国际轨道数据源

    Parameter SL-8 R/B STARLINK-4403
    Semimajor Axis (a) 6893.151 km 6857.288 km
    Eccentricity (e) 0.023972 0.000156
    Inclination (i) 82.9366° 97.2863°
    RAAN 124.6063° 301.8683°
    Perigee Argument 276.2791° 82.7012°
    Mean Anomaly (M) 81.1190° 257.2397°
    Apogee 680.254 km 480.219 km
    Perigee 349.774 km 478.083 km
    Orbit Epoch 2026-09-03T18:52:08+0000 2026-09-03T20:00:02+0000

    SL-8 R/B & STARLINK-4403 Collision Probability (Pc) Trend

    SL-8 R/B & STARLINK-4403 Collision Probability (Pc) TrendNot Available

    SL-8 R/B & STARLINK-4403 Miss Distance (Miss Distance) Trend

    SL-8 R/B & STARLINK-4403 Miss Distance (Miss Distance) TrendNot Available

    SL-8 R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4403Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    SL-8 R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4403Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with SL-8 R/B

    No nearby objects data