Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    6.799466E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-13T12:15:07+0800
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    1 Object 1

    AOE ID 59939
    NORAD ID 59939
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 66748
    NORAD ID 66748
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter STARLINK-31955 UMBRA-11
    Time of Closest Approach 2026-10-13T13:16:45+0000
    Collision Probability (Pc) 6.799466E-6
    Conjunction Distance (km) 1.485 km
    Relative Speed (km/s) 14.356 km/s
    Conjunction Risk Parameters R (Radial): -0.574 | I (In-track): 0.47 | C (Cross-track): -1.285
    Collision Risk Index (CRI) 0.52
    X Position (km) -6853.074 -6852.48
    Position Y (km) -82.885 -84.098
    Position Z (km) -50.987 -51.602
    Velocity X (km/s) 0.032 0.037
    Velocity Y (km/s) -5.577 0.984
    Velocity Z (km/s) 5.204 -7.565

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-31955 UMBRA-11
    Semimajor Axis (a) 6851.535 km 6850.598 km
    Eccentricity (e) 0.000510 0.000093
    Inclination (i) 43.0016° 97.4102°
    RAAN 189.3003° 359.4208°
    Perigee Argument 208.4581° 238.8076°
    Mean Anomaly (M) 151.5994° 121.3074°
    Apogee 476.891 km 473.096 km
    Perigee 469.905 km 471.826 km
    Orbit Epoch 2026-10-12T02:49:56+0000 2026-10-12T05:07:30+0000

    STARLINK-31955 & UMBRA-11 Collision Probability (Pc) Trend

    STARLINK-31955 & UMBRA-11 Collision Probability (Pc) TrendNot Available

    STARLINK-31955 & UMBRA-11 Miss Distance (Miss Distance) Trend

    STARLINK-31955 & UMBRA-11 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-31955Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    UMBRA-11Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    STARLINK-31955Collision Probability Trend

    Object 1 Probability TrendNot Available

    UMBRA-11Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-31955

    No nearby objects data