Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.721679E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-25T00:48:26+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 29918
    NORAD ID 29918
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter OPS 4078 (DMSP 4B F2) FENGYUN 1C DEB
    Time of Closest Approach 2026-10-25T08:54:25+0000
    Collision Probability (Pc) 1.721679E-6
    Conjunction Distance (km) 1.697 km
    Relative Speed (km/s) 3.217 km/s
    Conjunction Risk Parameters R (Radial): 1.613 | I (In-track): 0.519 | C (Cross-track): 0.107
    Collision Risk Index (CRI) 0.4
    X Position (km) -749.955 -749.762
    Position Y (km) 825.676 826.248
    Position Z (km) -7078.628 -7080.213
    Velocity X (km/s) 3.914 6.192
    Velocity Y (km/s) 6.338 4.126
    Velocity Z (km/s) 0.337 -0.179

    Orbital Parameters 国际轨道数据源

    Parameter OPS 4078 (DMSP 4B F2) FENGYUN 1C DEB
    Semimajor Axis (a) 7175.618 km 7150.848 km
    Eccentricity (e) 0.002883 0.001444
    Inclination (i) 98.5887° 98.8468°
    RAAN 57.6068° 32.2728°
    Perigee Argument 310.7180° 116.0299°
    Mean Anomaly (M) 49.1497° 274.1368°
    Apogee 818.170 km 783.036 km
    Perigee 776.792 km 762.386 km
    Orbit Epoch 2026-10-24T06:24:47+0000 2026-10-24T05:02:16+0000

    OPS 4078 (DMSP 4B F2) & FENGYUN 1C DEB Collision Probability (Pc) Trend

    OPS 4078 (DMSP 4B F2) & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    OPS 4078 (DMSP 4B F2) & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    OPS 4078 (DMSP 4B F2) & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    OPS 4078 (DMSP 4B F2)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 4078 (DMSP 4B F2)Collision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 4078 (DMSP 4B F2)

    No nearby objects data