Conjunction Event Detail

    ✅
    Very Low Risk
    Very low collision probability. Continue monitoring.
    7.500449E-7
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T21:46:09+0800
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    1 Object 1

    AOE ID 3510
    NORAD ID 3510
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 4752
    NORAD ID 4752
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter OPS 4078 (DMSP 4B F2) THORAD AGENA D DEB
    Time of Closest Approach 2026-10-28T21:46:29+0000
    Collision Probability (Pc) 7.500449E-7
    Conjunction Distance (km) 2.971 km
    Relative Speed (km/s) 5.118 km/s
    Conjunction Risk Parameters R (Radial): 2.76 | I (In-track): -1.032 | C (Cross-track): -0.375
    Collision Risk Index (CRI) 0.33
    X Position (km) 1249.305 1249.924
    Position Y (km) 75.89 77.009
    Position Z (km) 7075.809 7078.49
    Velocity X (km/s) -3.367 1.63
    Velocity Y (km/s) -6.596 -7.268
    Velocity Z (km/s) 0.675 -0.206

    Orbital Parameters 国际轨道数据源

    Parameter OPS 4078 (DMSP 4B F2) THORAD AGENA D DEB
    Semimajor Axis (a) 7175.616 km 7210.316 km
    Eccentricity (e) 0.002871 0.002027
    Inclination (i) 98.5889° 99.8948°
    RAAN 60.3640° 101.0098°
    Perigee Argument 302.2535° 87.4059°
    Mean Anomaly (M) 57.5866° 272.9433°
    Apogee 818.079 km 846.797 km
    Perigee 776.879 km 817.561 km
    Orbit Epoch 2026-10-27T01:39:54+0000 2026-10-27T04:42:09+0000

    OPS 4078 (DMSP 4B F2) & THORAD AGENA D DEB Collision Probability (Pc) Trend

    OPS 4078 (DMSP 4B F2) & THORAD AGENA D DEB Collision Probability (Pc) TrendNot Available

    OPS 4078 (DMSP 4B F2) & THORAD AGENA D DEB Miss Distance (Miss Distance) Trend

    OPS 4078 (DMSP 4B F2) & THORAD AGENA D DEB Miss Distance (Miss Distance) TrendNot Available

    OPS 4078 (DMSP 4B F2)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    THORAD AGENA D DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OPS 4078 (DMSP 4B F2)Collision Probability Trend

    Object 1 Probability TrendNot Available

    THORAD AGENA D DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 4078 (DMSP 4B F2)

    No nearby objects data