Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    1.022868E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T16:05:24+0800
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    1 Object 1

    AOE ID 40978
    NORAD ID 40978
    Object Type ROCKET BODY
    Country
    US US
    VS

    2 Object 2

    AOE ID 53249
    NORAD ID 53249
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter ATLAS 5 CENTAUR R/B STARLINK-4128
    Time of Closest Approach 2026-09-06T15:59:14+0000
    Collision Probability (Pc) 1.022868E-5
    Conjunction Distance (km) 1.284 km
    Relative Speed (km/s) 12.715 km/s
    Conjunction Risk Parameters R (Radial): -1.06 | I (In-track): -0.407 | C (Cross-track): -0.597
    Collision Risk Index (CRI) 0.55
    X Position (km) -1991.445 -1991.062
    Position Y (km) -6018.094 -6019.225
    Position Z (km) 2582.034 2582.504
    Velocity X (km/s) 4.163 3.999
    Velocity Y (km/s) 1.335 -3.644
    Velocity Z (km/s) 6.311 -5.386

    Orbital Parameters 国际轨道数据源

    Parameter ATLAS 5 CENTAUR R/B STARLINK-4128
    Semimajor Axis (a) 6926.434 km 6848.871 km
    Eccentricity (e) 0.011621 0.000141
    Inclination (i) 64.7654° 53.1610°
    RAAN 250.9795° 103.5828°
    Perigee Argument 22.9891° 98.8021°
    Mean Anomaly (M) 337.6369° 261.3141°
    Apogee 628.791 km 471.704 km
    Perigee 467.803 km 469.764 km
    Orbit Epoch 2026-09-03T09:47:28+0000 2026-09-03T15:17:29+0000

    ATLAS 5 CENTAUR R/B & STARLINK-4128 Collision Probability (Pc) Trend

    ATLAS 5 CENTAUR R/B & STARLINK-4128 Collision Probability (Pc) TrendNot Available

    ATLAS 5 CENTAUR R/B & STARLINK-4128 Miss Distance (Miss Distance) Trend

    ATLAS 5 CENTAUR R/B & STARLINK-4128 Miss Distance (Miss Distance) TrendNot Available

    ATLAS 5 CENTAUR R/BMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-4128Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ATLAS 5 CENTAUR R/BCollision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-4128Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ATLAS 5 CENTAUR R/B

    No nearby objects data