Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    3.218255E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T21:46:08+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 18586
    NORAD ID 18586
    Object Type ROCKET BODY
    Country
    CIS CIS

    Conjunction Constraints

    Parameter OPS 4078 (DMSP 4B F2) SL-8 R/B
    Time of Closest Approach 2026-10-27T16:29:44+0000
    Collision Probability (Pc) 3.218255E-6
    Conjunction Distance (km) 1.623 km
    Relative Speed (km/s) 7.158 km/s
    Conjunction Risk Parameters R (Radial): -1.538 | I (In-track): 0.457 | C (Cross-track): -0.241
    Collision Risk Index (CRI) 0.45
    X Position (km) 640.451 640.33
    Position Y (km) 3147.895 3147.681
    Position Z (km) -6401.453 -6399.849
    Velocity X (km/s) 3.689 -3.439
    Velocity Y (km/s) 5.666 6.053
    Velocity Z (km/s) 3.158 2.642

    Orbital Parameters 国际轨道数据源

    Parameter OPS 4078 (DMSP 4B F2) SL-8 R/B
    Semimajor Axis (a) 7175.616 km 7141.903 km
    Eccentricity (e) 0.002871 0.001946
    Inclination (i) 98.5889° 74.0038°
    RAAN 60.3640° 114.2328°
    Perigee Argument 302.2535° 82.2315°
    Mean Anomaly (M) 57.5866° 278.1047°
    Apogee 818.079 km 777.663 km
    Perigee 776.879 km 749.869 km
    Orbit Epoch 2026-10-27T01:39:54+0000 2026-10-27T05:07:46+0000

    OPS 4078 (DMSP 4B F2) & SL-8 R/B Collision Probability (Pc) Trend

    OPS 4078 (DMSP 4B F2) & SL-8 R/B Collision Probability (Pc) TrendNot Available

    OPS 4078 (DMSP 4B F2) & SL-8 R/B Miss Distance (Miss Distance) Trend

    OPS 4078 (DMSP 4B F2) & SL-8 R/B Miss Distance (Miss Distance) TrendNot Available

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

    Object 1 Miss Distance TrendNot Available

    SL-8 R/BMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OPS 4078 (DMSP 4B F2)Collision Probability Trend

    Object 1 Probability TrendNot Available

    SL-8 R/BCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 4078 (DMSP 4B F2)

    No nearby objects data