Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.238078E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-18T19:42:48+0800
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    1 Object 1

    AOE ID 51970
    NORAD ID 51970
    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-3677 UMBRA-11
    Time of Closest Approach 2026-10-18T14:35:51+0000
    Collision Probability (Pc) 1.238078E-6
    Conjunction Distance (km) 2.689 km
    Relative Speed (km/s) 9.998 km/s
    Conjunction Risk Parameters R (Radial): 2.531 | I (In-track): 0.691 | C (Cross-track): 0.589
    Collision Risk Index (CRI) 0.37
    X Position (km) 4219.899 4221.927
    Position Y (km) 1119.713 1120.719
    Position Z (km) -5283.756 -5285.206
    Velocity X (km/s) 0.07 5.953
    Velocity Y (km/s) 7.442 -0.015
    Velocity Z (km/s) 1.635 4.753

    Orbital Parameters 国际轨道数据源

    Parameter STARLINK-3677 UMBRA-11
    Semimajor Axis (a) 6848.891 km 6849.663 km
    Eccentricity (e) 0.000103 0.000132
    Inclination (i) 53.1606° 97.4083°
    RAAN 83.5790° 5.3607°
    Perigee Argument 58.1539° 212.5299°
    Mean Anomaly (M) 301.9562° 147.5861°
    Apogee 471.458 km 472.433 km
    Perigee 470.050 km 470.619 km
    Orbit Epoch 2026-10-17T20:07:47+0000 2026-10-18T03:50:35+0000

    STARLINK-3677 & UMBRA-11 Collision Probability (Pc) Trend

    STARLINK-3677 & UMBRA-11 Collision Probability (Pc) TrendNot Available

    STARLINK-3677 & UMBRA-11 Miss Distance (Miss Distance) Trend

    STARLINK-3677 & UMBRA-11 Miss Distance (Miss Distance) TrendNot Available

    STARLINK-3677Miss 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-3677Collision Probability Trend

    Object 1 Probability TrendNot Available

    UMBRA-11Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with STARLINK-3677

    No nearby objects data