Conjunction Event Detail

    ✅
    Low Risk
    Low collision probability. Continue monitoring.
    2.560579E-6
    Collision Probability (Pc)
    Last Conjunction Event Update Time 2026-10-27T00:20:10+0800
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    1 Object 1

    Name TERRA
    AOE ID 25994
    NORAD ID 25994
    Object Type PAYLOAD
    Country
    US US
    ← VS →

    2 Object 2

    AOE ID 30447
    NORAD ID 30447
    Object Type DEBRIS
    Country
    CN CN

    Conjunction Constraints

    Parameter TERRA FENGYUN 1C DEB
    Time of Closest Approach 2026-10-26T16:22:43+0000
    Collision Probability (Pc) 2.560579E-6
    Conjunction Distance (km) 2.076 km
    Relative Speed (km/s) 14.391 km/s
    Conjunction Risk Parameters R (Radial): 1.545 | I (In-track): -0.377 | C (Cross-track): -1.334
    Collision Risk Index (CRI) 0.43
    X Position (km) 3709.136 3710.007
    Position Y (km) -196.059 -194.716
    Position Z (km) -6023.201 -6024.522
    Velocity X (km/s) 6.044 -6.178
    Velocity Y (km/s) -2.293 -1.901
    Velocity Z (km/s) 3.797 -3.79

    Orbital Parameters 国际轨道数据源

    Parameter TERRA FENGYUN 1C DEB
    Semimajor Axis (a) 7067.492 km 7064.519 km
    Eccentricity (e) 0.000278 0.005190
    Inclination (i) 97.9297° 98.9538°
    RAAN 343.4702° 191.2722°
    Perigee Argument 147.6489° 140.7188°
    Mean Anomaly (M) 254.2236° 10.6733°
    Apogee 691.317 km 723.050 km
    Perigee 687.393 km 649.714 km
    Orbit Epoch 2026-10-26T05:20:09+0000 2026-10-26T04:28:58+0000

    TERRA & FENGYUN 1C DEB Collision Probability (Pc) Trend

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

    TERRA & FENGYUN 1C DEB Miss Distance (Miss Distance) Trend

    TERRA & FENGYUN 1C DEB Miss Distance (Miss Distance) TrendNot Available

    TERRAMiss 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

    TERRACollision Probability Trend

    Object 1 Probability TrendNot Available

    FENGYUN 1C DEBCollision Probability Trend

    Object 2 Probability TrendNot Available

    Nearby Objects with TERRA

    No nearby objects data