Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    1.152257E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-10T07:51:50+0800
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    1 Object 1

    AOE ID 2657
    NORAD ID 2657
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 39076
    NORAD ID 39076
    Object Type PAYLOAD
    Country
    GLOB GLOB

    Conjunction Constraints

    Parameter ESSA 4 (TOS-B) GLOBALSTAR M078
    Time of Closest Approach 2026-09-11T21:14:30+0000
    Collision Probability (Pc) 1.152257E-6
    Conjunction Distance (km) 2.822 km
    Relative Speed (km/s) 9.936 km/s
    Conjunction Risk Parameters R (Radial): -1.622 | I (In-track): 1.65 | C (Cross-track): -1.614
    Collision Risk Index (CRI) 0.36
    X Position (km) -591.799 -593.082
    Position Y (km) -5087.241 -5089.75
    Position Z (km) -5877.66 -5877.511
    Velocity X (km/s) -1.671 6.87
    Velocity Y (km/s) 5.295 1.088
    Velocity Z (km/s) -4.477 -1.637

    Orbital Parameters 国际轨道数据源

    Parameter ESSA 4 (TOS-B) GLOBALSTAR M078
    Semimajor Axis (a) 7760.516 km 7791.767 km
    Eccentricity (e) 0.007319 0.000160
    Inclination (i) 102.0783° 51.9893°
    RAAN 94.5986° 26.7530°
    Perigee Argument 115.0924° 94.7408°
    Mean Anomaly (M) 39.4557° 265.3640°
    Apogee 1439.177 km 1414.874 km
    Perigee 1325.581 km 1412.386 km
    Orbit Epoch 2026-09-09T00:46:51+0000 2026-09-09T12:47:39+0000

    ESSA 4 (TOS-B) & GLOBALSTAR M078 Collision Probability (Pc) Trend

    ESSA 4 (TOS-B) & GLOBALSTAR M078 Collision Probability (Pc) TrendNot Available

    ESSA 4 (TOS-B) & GLOBALSTAR M078 Miss Distance (Miss Distance) Trend

    ESSA 4 (TOS-B) & GLOBALSTAR M078 Miss Distance (Miss Distance) TrendNot Available

    ESSA 4 (TOS-B)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    GLOBALSTAR M078Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    ESSA 4 (TOS-B)Collision Probability Trend

    Object 1 Probability TrendNot Available

    GLOBALSTAR M078Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with ESSA 4 (TOS-B)

    No nearby objects data