Conjunction Event Detail

    Very Low Risk
    Very low collision probability. Continue monitoring.
    9.488237E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-03T09:30:24+0800
    View CDM
    Download CDM 1.0

    1 Object 1

    AOE ID 47399
    NORAD ID 47399
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 56318
    NORAD ID 56318
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-2121 STARLINK-5954
    Time of Closest Approach 2026-09-04T22:15:18+0000
    Collision Probability (Pc) 9.488237E-7
    Conjunction Distance (km) 2.854 km
    Relative Speed (km/s) 7.224 km/s
    Conjunction Risk Parameters R (Radial): -2.853 | I (In-track): -0.007 | C (Cross-track): -0.004
    Collision Risk Index (CRI) 0.35
    X Position (km) 1890.847 1890.066
    Position Y (km) 5234.961 5232.775
    Position Z (km) 3981.593 3979.934
    Velocity X (km/s) -4.273 2.613
    Velocity Y (km/s) 4.74 3.731
    Velocity Z (km/s) -4.191 -6.128

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-2121 STARLINK-5954
    Semimajor Axis (a) 6848.830 km 6843.716 km
    Eccentricity (e) 0.000135 0.000162
    Inclination (i) 53.1564° 97.2841°
    RAAN 293.6303° 241.9707°
    Perigee Argument 89.0120° 106.8239°
    Mean Anomaly (M) 271.1037° 253.3182°
    Apogee 471.619 km 466.689 km
    Perigee 469.767 km 464.469 km
    Orbit Epoch 2026-09-02T13:18:02+0000 2026-09-01T23:09:13+0000

    STARLINK-2121 & STARLINK-5954 Collision Probability (Pc) Trend

    STARLINK-2121 & STARLINK-5954 Collision Probability (Pc) TrendNot Available

    STARLINK-2121 & STARLINK-5954 Miss Distance (Miss Distance) Trend

    STARLINK-2121 & STARLINK-5954 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-2121Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5954Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-2121Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5954Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-2121

    No nearby objects data