Conjunction Event Detail

    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    3.719651E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-14T11:35:17+0800
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    1 Object 1

    AOE ID 4047
    NORAD ID 4047
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 30756
    NORAD ID 30756
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter OPS 1127 (DMSP 4B F3) FENGYUN 1C DEB
    Time of Closest Approach 2026-09-16T06:03:33+0000
    Collision Probability (Pc) 3.719651E-5
    Conjunction Distance (km) 0.897 km
    Relative Speed (km/s) 13.703 km/s
    Conjunction Risk Parameters R (Radial): -0.483 | I (In-track): -0.294 | C (Cross-track): -0.695
    Collision Risk Index (CRI) 0.66
    X Position (km) -1843.67 -1844.098
    Position Y (km) 1998.759 1998.11
    Position Z (km) -6624.935 -6624.489
    Velocity X (km/s) -2.197 6.535
    Velocity Y (km/s) 6.623 -2.548
    Velocity Z (km/s) 2.64 -2.593

    Orbital Parameters 国际轨道数据源

    Parameter OPS 1127 (DMSP 4B F3) FENGYUN 1C DEB
    Semimajor Axis (a) 7171.426 km 7204.554 km
    Eccentricity (e) 0.004390 0.007095
    Inclination (i) 98.4125° 98.9750°
    RAAN 108.9321° 332.2356°
    Perigee Argument 355.5076° 253.3408°
    Mean Anomaly (M) 4.5707° 135.1985°
    Apogee 824.773 km 877.536 km
    Perigee 761.805 km 775.298 km
    Orbit Epoch 2026-09-13T12:52:02+0000 2026-09-13T04:17:21+0000

    OPS 1127 (DMSP 4B F3) & FENGYUN 1C DEB Collision Probability (Pc) Trend

    OPS 1127 (DMSP 4B F3) & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    OPS 1127 (DMSP 4B F3) & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    OPS 1127 (DMSP 4B F3) & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    OPS 1127 (DMSP 4B F3)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    FENGYUN 1C DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OPS 1127 (DMSP 4B F3)Collision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 1127 (DMSP 4B F3)

    No nearby objects data