Conjunction Event Detail

    Low Risk
    Low collision probability. Continue monitoring.
    2.056478E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-04T11:11:10+0800
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    1 Object 1

    AOE ID 4512
    NORAD ID 4512
    Object Type PAYLOAD
    Country
    US US
    VS

    2 Object 2

    AOE ID 43578
    NORAD ID 43578
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter OPS 0203 (DMSP 5A F2) IRIDIUM 159
    Time of Closest Approach 2026-09-04T03:47:39+0000
    Collision Probability (Pc) 2.056478E-6
    Conjunction Distance (km) 2.308 km
    Relative Speed (km/s) 14.871 km/s
    Conjunction Risk Parameters R (Radial): 0.687 | I (In-track): -0.143 | C (Cross-track): -2.198
    Collision Risk Index (CRI) 0.41
    X Position (km) -4462.84 -4462.488
    Position Y (km) -2305.145 -2307.412
    Position Z (km) -5106.606 -5106.854
    Velocity X (km/s) -5.383 5.005
    Velocity Y (km/s) -0.933 1.837
    Velocity Z (km/s) 5.065 -5.209

    Orbital Parameters 国际轨道数据源

    Parameter OPS 0203 (DMSP 5A F2) IRIDIUM 159
    Semimajor Axis (a) 7147.989 km 7155.799 km
    Eccentricity (e) 0.006201 0.000217
    Inclination (i) 98.8857° 86.3984°
    RAAN 197.8159° 23.8060°
    Perigee Argument 213.7965° 95.1076°
    Mean Anomaly (M) 145.9261° 265.0368°
    Apogee 814.177 km 779.216 km
    Perigee 725.527 km 776.108 km
    Orbit Epoch 2026-09-03T19:39:08+0000 2026-09-03T20:02:54+0000

    OPS 0203 (DMSP 5A F2) & IRIDIUM 159 Collision Probability (Pc) Trend

    OPS 0203 (DMSP 5A F2) & IRIDIUM 159 Collision Probability (Pc) TrendNot Available

    OPS 0203 (DMSP 5A F2) & IRIDIUM 159 Miss Distance (Miss Distance) Trend

    OPS 0203 (DMSP 5A F2) & IRIDIUM 159 Miss Distance (Miss Distance) TrendNot Available

    OPS 0203 (DMSP 5A F2)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    IRIDIUM 159Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OPS 0203 (DMSP 5A F2)Collision Probability Trend

    Object 1 Probability TrendNot Available

    IRIDIUM 159Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 0203 (DMSP 5A F2)

    No nearby objects data