Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    1.228871E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-19T17:41:49+0800
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    1 Object 1

    Name USA 76
    AOE ID 21808
    NORAD ID 21808
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 38498
    NORAD ID 38498
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter USA 76 FENGYUN 1C DEB
    Time of Closest Approach 2026-10-19T19:52:28+0000
    Collision Probability (Pc) 1.228871E-6
    Conjunction Distance (km) 2.812 km
    Relative Speed (km/s) 11.026 km/s
    Conjunction Risk Parameters R (Radial): -2.014 | I (In-track): -1.082 | C (Cross-track): -1.634
    Collision Risk Index (CRI) 0.37
    X Position (km) 346.477 345.321
    Position Y (km) 3610.504 3610.076
    Position Z (km) -7192.159 -7194.685
    Velocity X (km/s) -6.713 2.016
    Velocity Y (km/s) 0.248 -5.821
    Velocity Z (km/s) -0.053 -2.975

    Orbital Parameters 国际轨道数据源

    Parameter USA 76 FENGYUN 1C DEB
    Semimajor Axis (a) 7410.574 km 7651.663 km
    Eccentricity (e) 0.088265 0.055612
    Inclination (i) 63.2969° 99.6987°
    RAAN 180.8183° 283.3594°
    Perigee Argument 76.8111° 87.0344°
    Mean Anomaly (M) 292.9782° 279.4229°
    Apogee 1686.529 km 1699.049 km
    Perigee 378.345 km 848.003 km
    Orbit Epoch 2026-10-18T19:40:17+0000 2026-10-18T16:44:35+0000

    USA 76 & FENGYUN 1C DEB Collision Probability (Pc) Trend

    USA 76 & FENGYUN 1C DEB Collision Probability (Pc) TrendNot Available

    USA 76 & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    USA 76 & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    USA 76Miss 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

    USA 76Collision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with USA 76

    No nearby objects data