Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.165012E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-31T06:08:14+0800
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    1 Object 1

    AOE ID 2980
    NORAD ID 2980
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 35249
    NORAD ID 35249
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter OPS 1264 (DMSP 4A F4) CZ-4C DEB
    Time of Closest Approach 2026-11-01T07:41:52+0000
    Collision Probability (Pc) 1.165012E-6
    Conjunction Distance (km) 2.671 km
    Relative Speed (km/s) 8.838 km/s
    Conjunction Risk Parameters R (Radial): 2.667 | I (In-track): -0.132 | C (Cross-track): -0.041
    Collision Risk Index (CRI) 0.36
    X Position (km) 1167.541 1168.066
    Position Y (km) -519.307 -519.392
    Position Z (km) 6879.01 6881.627
    Velocity X (km/s) -5.995 2.272
    Velocity Y (km/s) -4.578 -7.17
    Velocity Z (km/s) 0.707 -1.04

    Orbital Parameters 国际轨道数据源

    Parameter OPS 1264 (DMSP 4A F4) CZ-4C DEB
    Semimajor Axis (a) 7061.302 km 7099.390 km
    Eccentricity (e) 0.009377 0.019765
    Inclination (i) 99.1758° 97.7771°
    RAAN 34.2010° 106.7278°
    Perigee Argument 60.6034° 153.1330°
    Mean Anomaly (M) 300.4487° 208.0270°
    Apogee 749.382 km 861.574 km
    Perigee 616.948 km 580.932 km
    Orbit Epoch 2026-10-30T06:04:46+0000 2026-10-30T05:36:38+0000

    OPS 1264 (DMSP 4A F4) & CZ-4C DEB Collision Probability (Pc) Trend

    OPS 1264 (DMSP 4A F4) & CZ-4C DEB Collision Probability (Pc) TrendNot Available

    OPS 1264 (DMSP 4A F4) & CZ-4C DEB Miss Distance (Miss Distance) Trend

    OPS 1264 (DMSP 4A F4) & CZ-4C DEB Miss Distance (Miss Distance) TrendNot Available

    OPS 1264 (DMSP 4A F4)Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    CZ-4C DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    OPS 1264 (DMSP 4A F4)Collision Probability Trend

    Object 1 Probability TrendNot Available

    CZ-4C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with OPS 1264 (DMSP 4A F4)

    No nearby objects data