Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.674135E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-09-27T23:53:33+0800
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    1 Object 1

    Name NOAA 9
    AOE ID 15427
    NORAD ID 15427
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 42508
    NORAD ID 42508
    Object Type DEBRIS
    Country
    US US

    Conjunction Constraints

    Parameter NOAA 9 THORAD AGENA D DEB
    Time of Closest Approach 2026-09-27T22:45:28+0000
    Collision Probability (Pc) 2.674135E-6
    Conjunction Distance (km) 2.034 km
    Relative Speed (km/s) 14.233 km/s
    Conjunction Risk Parameters R (Radial): 0.57 | I (In-track): 0.577 | C (Cross-track): -1.865
    Collision Risk Index (CRI) 0.44
    X Position (km) -2737.76 -2736.583
    Position Y (km) 2815.758 2817.348
    Position Z (km) 6037.446 6037.918
    Velocity X (km/s) -2.621 5.834
    Velocity Y (km/s) 5.791 -2.653
    Velocity Z (km/s) -3.869 3.862

    Orbital Parameters 国际轨道数据源

    Parameter NOAA 9 THORAD AGENA D DEB
    Semimajor Axis (a) 7213.349 km 7296.451 km
    Eccentricity (e) 0.001551 0.012123
    Inclination (i) 99.0933° 99.8003°
    RAAN 299.0565° 148.0441°
    Perigee Argument 63.2689° 68.6408°
    Mean Anomaly (M) 320.3636° 292.7638°
    Apogee 846.399 km 1006.772 km
    Perigee 824.025 km 829.856 km
    Orbit Epoch 2026-09-27T01:57:42+0000 2026-09-26T12:00:25+0000

    NOAA 9 & THORAD AGENA D DEB Collision Probability (Pc) Trend

    NOAA 9 & THORAD AGENA D DEB Collision Probability (Pc) TrendNot Available

    NOAA 9 & THORAD AGENA D DEB Miss Distance (Miss Distance) Trend

    NOAA 9 & THORAD AGENA D DEB Miss Distance (Miss Distance) TrendNot Available

    NOAA 9Miss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    THORAD AGENA D DEBMiss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    NOAA 9Collision Probability Trend

    Object 1 Probability TrendNot Available

    THORAD AGENA D DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with NOAA 9

    No nearby objects data