Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.845999E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-29T14:11:41+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 55939
    NORAD ID 55939
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-2121 STARLINK-5918
    Time of Closest Approach 2026-10-31T07:37:26+0000
    Collision Probability (Pc) 1.845999E-6
    Conjunction Distance (km) 1.715 km
    Relative Speed (km/s) 3.796 km/s
    Conjunction Risk Parameters R (Radial): -1.546 | I (In-track): 0.717 | C (Cross-track): 0.185
    Collision Risk Index (CRI) 0.4
    X Position (km) 1859.495 1858.462
    Position Y (km) 4484.075 4482.902
    Position Z (km) 4800.487 4799.784
    Velocity X (km/s) -7.062 -5.201
    Velocity Y (km/s) -0.202 -2.948
    Velocity Z (km/s) 2.916 4.759

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-2121 STARLINK-5918
    Semimajor Axis (a) 6833.839 km 6828.049 km
    Eccentricity (e) 0.000118 0.000405
    Inclination (i) 53.1617° 70.0020°
    RAAN 33.1110° 53.7139°
    Perigee Argument 95.6681° 279.3735°
    Mean Anomaly (M) 264.4457° 80.6987°
    Apogee 456.512 km 452.677 km
    Perigee 454.892 km 447.147 km
    Orbit Epoch 2026-10-28T10:40:54+0000 2026-10-28T13:53:08+0000

    STARLINK-2121 & STARLINK-5918 Collision Probability (Pc) Trend

    STARLINK-2121 & STARLINK-5918 Collision Probability (Pc) TrendNot Available

    STARLINK-2121 & STARLINK-5918 Miss Distance (Miss Distance) Trend

    STARLINK-2121 & STARLINK-5918 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-2121Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    STARLINK-5918Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-2121Collision Probability Trend

    Object 1 Probability TrendNot Available

    STARLINK-5918Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-2121

    No nearby objects data