Conjunction Event Detail

    ⚠
    Medium Risk
    Monitor closely. Maneuver recommended for primary asset.
    7.961974E-5
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-13T00:36:10+0800
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    1 Object 1

    AOE ID 4736
    NORAD ID 4736
    Object Type DEBRIS
    Country
    US US
    ← VS →

    2 Object 2

    Name NOAA 21
    AOE ID 54234
    NORAD ID 54234
    Object Type PAYLOAD
    Country
    US US

    Conjunction Constraints

    Parameter THORAD AGENA D DEB NOAA 21
    Time of Closest Approach 2026-10-13T08:35:45+0000
    Collision Probability (Pc) 7.961974E-5
    Conjunction Distance (km) 0.674 km
    Relative Speed (km/s) 11.21 km/s
    Conjunction Risk Parameters R (Radial): -0.667 | I (In-track): 0.052 | C (Cross-track): 0.073
    Collision Risk Index (CRI) 0.73
    X Position (km) 1781.463 1781.294
    Position Y (km) 202.739 202.631
    Position Z (km) -6986.409 -6985.766
    Velocity X (km/s) 5.701 -5.151
    Velocity Y (km/s) -4.622 -5.143
    Velocity Z (km/s) 1.294 -1.464

    Orbital Parameters 国际轨道数据源

    Parameter THORAD AGENA D DEB NOAA 21
    Semimajor Axis (a) 7260.669 km 7205.002 km
    Eccentricity (e) 0.008299 0.000121
    Inclination (i) 100.0548° 98.7145°
    RAAN 321.3564° 222.1019°
    Perigee Argument 259.6904° 182.1537°
    Mean Anomaly (M) 99.4894° 177.9634°
    Apogee 942.789 km 827.739 km
    Perigee 822.275 km 825.991 km
    Orbit Epoch 2026-10-12T02:10:14+0000 2026-10-12T06:00:27+0000

    THORAD AGENA D DEB & NOAA 21 Collision Probability (Pc) Trend

    THORAD AGENA D DEB & NOAA 21 Collision Probability (Pc) TrendNot Available

    THORAD AGENA D DEB & NOAA 21 Miss Distance (Miss Distance) Trend

    THORAD AGENA D DEB & NOAA 21 Miss Distance (Miss Distance) TrendNot Available

    THORAD AGENA D DEBMiss Distance Trend with All Objects

    Object 1 Miss Distance TrendNot Available

    NOAA 21Miss Distance Trend with All Objects

    Object 2 Miss Distance TrendNot Available

    THORAD AGENA D DEBCollision Probability Trend

    Object 1 Probability TrendNot Available

    NOAA 21Collision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with THORAD AGENA D DEB

    No nearby objects data